Network Standard 11 / 2013 Testing and Commissioning Low voltage overhead line ... 4.9 High voltage ring main switchgear ... The group which conducts pre-commissioning and final commissioning

1 of 157 DM# 10701697 Network Standard NS 11/2013

Network Standard 11 / 2013 Testing and Commissioning

February 2016

© Copyright of Western Power

Any use of this material except in accordance with a written agreement with Western Power is prohibited.

DCWI


Document control Author/custodianship

Author Hamer Zavaleta-Vidal

Process owner/custodian Warren Wild

Stakeholders In the process of document update, the following people must be consulted. Name Position/title

Dave Christmas Work Practice Development Manager

Mike Millard-Hurst Power Training Services Manager

Charles Crew Lines & Cables Design Manager

Distribution list When this document is updated, the following people must receive a copy of the updated version.

Name Position/title

Ian Winks Work Practice Development Team Leader

Grant Stacy Engineering Team Leader

Craig Marley Training Program & Development Team Leader

Steve Jones Training Delivery Team Leader

Document version history

Version Date Amendment

Original Oct 2003 DM# 817718

Revised Feb 2011 DM# 7892458 v1

Revised Apr 2011 DM# 7892458 v2

Revised May 2013 DM# 7892458 v7H

Revised Nov 2013 DM# 7892458 v8B

Revised Feb 2014 DM# 7892458 v9

Revised Aug 2014 DM# 7892458 v10

Revised Jun 2015 DM# 7892458 v11 (only 2.9 – Pole to pillar was revised)

Revised Feb 2016 DM# 7892458 v12 (added 4.11 − NOJA pole-mounted automatic control recloser)

Revised May 2016 DM# 7892458 v13 (updated 2.7)

Related/referenced documents Document title

AS/NZS 4961–2003 Electric Cables - Polymeric Insulated – For distribution and service applications

AS/NZS 3000–2007 Electrical Installations (known as the Australian/New Zealand Wiring Rules)

AS/NZS 1026–2004 Electric Cables - Impregnated paper insulated – For working voltages up to and including 19/33 (36) kV

AS 2067–2008 Substations and high voltage installations exceeding 1 kV a.c.

http://busbar/applications/DMSRouter/817718

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Network Standard NS 11/2013 DM# 10701697 3 of 157

Review and authorisation Name Role Date authorised Signature

Dave Christmas Work Practices Manager 03 February 2014

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DCWI revision status as of Feb 2016 All DCWIs are for commissioning only (i.e. not decommissioning) unless otherwise specified.

DCWI title DM number Issue date

1.1 High voltage overhead line 1795426 06 May 2013

1.2 Low voltage overhead line 1796777 06 May 2013

1.3 Low voltage aerial bundled conductor 1795287 06 May 2013

1.4 High voltage ABC and Hendrix spacer cables 3602270 06 May 2013

2.1 High voltage XLPE cable testing 1641396 06 May 2013

2.2 High voltage mixed cable testing 1644080 06 May 2013

2.3 High voltage paper-insulated belted cables 1643359 06 May 2013

2.4 High voltage paper-insulated screened cable testing 1643927 06 May 2013

2.5 Low voltage XLPE cable testing 1644284 06 May 2013

2.6 Low voltage cable with/without pillars testing 1797424 06 May 2013

2.7 Steel standards streetlights 1698111 01 May 2016

2.8 SPUDS single-phase to three-phase pillar 7361371 06 May 2013

2.9 Pole to pillar 6356290 25 June 2015

3.1 MPS distribution transformer Commissioning 4744204 25 Nov 2013

Decommissioning 10705867 06 May 2013

3.2 Non-MPS distribution transformer Commissioning 4742929 25 Nov 2013


3.3 Single-phase transformer (pole mount/pad mount) 4608955 25 Nov 2013

3.4 Three-phase transformer (pole mount) Commissioning 4729442 06 May 2013


3.5 SWER isolation transformer (pole mount) 5115678 06 May 2013

3.6 SWER isolation transformer (ground mount) 5115848 25 Nov 2013

4.1 Earth testing 1647382 06 May 2013

4.2 Nu-Lec load break switch/sectionaliser 1954619 06 May 2013

4.3 Nu-Lec pole-mounted automatic control recloser 1648164 06 May 2013

4.4 Pole-top switch 1661970 06 May 2013

4.5 Pole-mounted capacitor bank 1661674 06 May 2013

4.6 SPURS fuse switch 2057732 06 May 2013

4.7 Voltage regulator (closed Delta connection) 2221388 06 May 2013

4.8 Voltage regulator (Star connection) 4711751 06 May 2013

4.9 High voltage ring main switchgear 1707122 06 May 2013

4.10 Low voltage kiosk 1767654 06 May 2013

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4.11 NOJA pole-mounted automatic control recloser 16 Feb 2016

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Contents General provisions ...................................................................................................................................................... 7

Purpose....................................................................................................................................................................... 7 Responsibility .............................................................................................................................................................. 7 Safety aspects and work skills .................................................................................................................................... 7

Definitions .................................................................................................................................................................... 8

Section 1 – Overhead lines .......................................................................................................................................14

1.1 HV overhead powerlines .............................................................................................................................15 1.2 LV overhead lines ........................................................................................................................................17 1.3 LV ABC ........................................................................................................................................................19 1.4 HV ABC and Hendrix spacer cable .............................................................................................................23

Section 2 – Underground cable ................................................................................................................................27

2.1 HV XLPE cable ............................................................................................................................................28 2.2 HV mixed cable ...........................................................................................................................................34 2.3 HV paper-insulated belted cable .................................................................................................................40 2.4 HV paper-insulated screened cable ............................................................................................................46 2.5 LV XLPE cable ............................................................................................................................................51 2.6 LV cable with/without pillars ........................................................................................................................55 2.7 Steel standard streetlights ...........................................................................................................................62 2.8 SPUDS single-phase to three-phase pillar ..................................................................................................67 2.9 Pole to pillar .................................................................................................................................................70

Section 3 – Distribution transformers .....................................................................................................................73 3.1 MPS distribution transformer .......................................................................................................................74 3.2 Non-MPS distribution transformer ...............................................................................................................80 3.3 Single-phase transformer (pole-mounted/pad-mounted) ............................................................................86 3.4 Three-phase transformer (pole-mounted) ...................................................................................................90 3.5 SWER isolation transformer (pole-mounted)...............................................................................................96 3.6 SWER isolation transformer (ground mounted) ..........................................................................................99

Section 4 – Distribution equipment .......................................................................................................................103

4.1 Earth testing ..............................................................................................................................................104 4.2 Nu-Lec load break switch/sectionaliser .....................................................................................................109 4.3 Nu-Lec pole-mounted automatic control recloser .....................................................................................113 4.4 Pole-top switch ..........................................................................................................................................118 4.5 Pole-mounted capacitor bank ....................................................................................................................121 4.6 HV Single-phase underground rural supply fuse switch ...........................................................................126 4.7 Voltage regulator (closed Delta connection) .............................................................................................129 4.8 Voltage regulator (Star connection) ...........................................................................................................135 4.9 HV ring main switchgear............................................................................................................................141 4.10 LV kiosk .....................................................................................................................................................147 4.11 NOJA pole-mounted automatic control recloser .......................................................................................151

Appendix 1 – Commissioning Officer authorisation requirements to commission distribution equipment .156

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General provisions Purpose This standard is intended for use as a guide when undertaking installation, testing and commissioning activities on Western Power’s distribution network.

It is recognised that equipment procured by Western Power changes over time, therefore this standard does not aim to identify and document individual equipment requirements.

Responsibility It is the responsibility of Work Practice Development to control the contents of this document.

The formal leader is responsible for ensuring that:

Persons performing the installation, testing and commissioning of apparatus on Western Power’s network have the necessary training, skills, experience, competencies and qualifications and understand the content of this standard.

The commissioning officer signs the document before energisation.

The switching operators hold current and updated switching licences approved by Western Power when performing switching operations.

Safety aspects and work skills

Safety is the core value of all work carried out by the Western Power Network Total Workforce. Therefore, every employee is charged with the responsibility of performing their work in a safe manner.

Before, during and after carrying out work in relation to this standard, staff must comply with all applicable safety Regulations, Standards and instructions, particularly those within this procedure, the Electrical System Safety Rules and the Work Practice Manual. See Appendix 1 for the specific training requirements that commissioning officers must meet in order to be authorised to commission distribution equipment.

All high voltage exposed conductors and electrical equipment must be regarded as alive or energised until isolated, proven de-energised (by an approved testing device) and earthed.

All low voltage exposed conductors and electrical equipment must be regarded as alive or energised until isolated, proven de-energised (by an approved testing device) and short-circuited.

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Definitions ABC Aerial bundled conductor.

Alive, live, energised With reference to electrical apparatus, means that a voltage exists between apparatus and earth.

Active or phase conductor Any conductor that is maintained at a difference of potential from the neutral or earthed conductor (also known as phase, line, red, white, blue, live).

Apparatus Any item of electrical machinery or equipment (including primary and secondary) in which conductors are used, or supported, or of which they form a part.

Approved Having written Western Power endorsement for a specific function.

As-constructed drawing A design drawing that has been modified or altered due to changes to the construction. As-constructed drawings should be prepared by a qualified surveyor where cable routes are shown and must be verified and signed by the person in charge of the work.

Authorised person A competent person with the delegated authority to perform the duty on behalf of Western Power. See Appendix 1 for the specific training requirements that commissioning officers must meet in order to be authorised to commission distribution equipment.

Cable Insulated multi-strand wiring (with or without fillings, reinforcements or protective coverings) designed for underground electrical installations.

Circuit A configuration of electrically connected components or devices that has a closed loop giving a return path for the current.

Commissioning Activities carried out in order to ensure that new and existing equipment is safely and accurately connected to the network and, once in service, operate as intended. Activities include inspections to verify installation, commissioning tests and post-energisation tests/checks.

Commissioning authority The group which conducts pre-commissioning and final commissioning activities and controls access to plant and equipment (which cannot be energised by normal switching) during the commissioning stage.

Commissioning notice Issue of this notice signifies that all commissioning tests have been completed and that a site and items of a plant are accepted by the operating authority for service. The notice may contain a list of outstanding items.

Conductor A wire, cable or form of metal designed for carrying electric current (includes neutral and earth).

Connected Joined together by a conductor capable of carrying electrical current for its required function or purpose by either physically clamping or bolting conductors together or closing a circuit breaker, switch or similar device.

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Control authority The representative authority responsible for the control of the apparatus. Typically this includes: Construction authority Commissioning authority Operating authority: Transmission SOCC and Distribution NOCC.

Construction authority The group responsible for construction and installation of plant and equipment. The construction authority controls access to plant and equipment which cannot be energised by normal switching during the construction stage.

Continuity test A test to determine whether electrical current flows continuously throughout the length of a single wire or individual wires in a cable.

CPM Construction project manager.

Danger The presence of risk to health and/or risk of bodily injury.

Danger tag An approved notice that reads ‘DANGER – DO NOT OPERATE’ which prohibits operation of the apparatus to ensure safety of personnel working under conditions of the work permit.

De-energised The electrical supply to electrical apparatus has been switched off. The electrical supply has been de-energised but not necessarily isolated, tested and earthed.

DFIS Distribution and Facilities Information System.

Discharged (electrically) Conductors which have been connected to earth so as to remove any stored electrical energy.

Discharge The release or dissipation of stored energy.

Disconnected The status of apparatus that has been separated from the system by the removal of jumpers or sections of conductors/cables such that the apparatus cannot be re-energised through normal switching operations (sometimes referred to as ‘non connectable’). For example, an opened electrical connection, as in the case of open MEN links/N-E connections, and open earthing leads from earth electrodes.

DNAR Distribution Network Access Request. The formal request to Network Operations Control Centre to access the HV distribution network.

Earth The conductive mass of the earth, the electric potential of which, at any point, is conventionally taken as zero.

Earthed Electrically connected to earth in an approved manner by approved earthing conductors or switches.

Electrical Access Permit (EAP) Western Power’s standard form that authorises access to, and work on, electrical apparatus which has been made safe by isolating and earthing.

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Electrical apparatus Any electrical equipment, including overhead lines and underground cables, the conductors of which are live or can be made live.

ENMAC Electricity Networks Management and Control (for distribution systems). An advanced DMS/TCS/SCADA product that completely computerises Electricity Distribution Control Room operations.

Equipotential mat A conducting device at ground level, connected electrically to equipment to avoid differences of step and touch potential through the body of a person.

ESSR – Electrical System Safety Rules The intention of the ESSR is to provide Western Power with a standard set of procedures and rules that govern the network issued and owned by NOCC and SOCC.

EWL Electrical Workers Licence.

EWP Elevating work platform.

Excavation Any action that digs displaces or penetrates the ground.

Formal handover A formal handover is a verbal or written exchange of information between two or more people who have responsibility for the job. The formal handover information must be accurate and understood, thereby ensuring continuity of safe work processes.

Handover certificate Used when responsibility for control of one or more items of plant, or an entire site, is transferred from one group to another.

Hipot High potential.

High voltage (HV) A voltage of 1,000 V AC or 1,500 V DC or greater.

Hazard A source of potential harm or situation with the potential to cause loss or damage.

Independent earth An effective earthed reference point used for testing purposes.

Insulated Separated from adjoining conducting material by a non-conducting substance which provides adequate resistance to the passage current, or to disruptive discharges through or over the surface of the substance at the operating voltage, and mitigates the danger of shock or injurious leakage of current.

Insulated conductor A conductor covered by a type of insulation that prevents the danger of electric shock.

Installer The authorised person responsible for installation of equipment by the construction authority. This may be applied equally to Western Power as to the Property Developer.

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Isolated De-energised by an isolating device that prevents unintentional energisation of the electrical apparatus.

Isolation point Isolating device that has been isolated and has danger label fitted.

Issuing officer An authorised person who is responsible for issuing permits. This task is generally handled by the switching operator.

Live Energised or subject to hazardous induced or capacitive voltages.

Low voltage (LV) A voltage less than 1,000 V AC or 1,500 V DC.

MEN links /N-E connections Multiple earthed neutral system of earthing as defined in AS/NZS 3000 or Neutral Earth connections.

MPS Modular package substation.

NAC Network authority card.

Network operator The owner, controller and operator of an electricity network (NOCC/SOCC).

NOCC Network Operations Control Centre. NOCC is responsible for control of the distribution network.

NOP Normally open point.

Operating authority The division responsible for operation and control of the network.

Overhead line Aerial conductors or cables together with associated supports, insulators and apparatus used for the transmission or distribution of electrical energy.

Person in charge Person responsible for the work being carried out by a work party.

Phase rotation The sequence in which phases rotate relative to each other.

Phasing out Identification of active conductors of the same phase (having no significant angular displacement i.e. red phase to red phase).

Portable earthing equipment earthing equipment that can be transferred from one location to another and used for earthing and short-circuiting de-energised station components.

Program earths Earthing equipment of approved type applied as part of an electrical switching program or schedule.

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Project manager The authorised person responsible for management of the project, including installation and handover tasks. This person is also called the construction project manager and is usually field-based.

PTCC Pole-top control cubicle.

Ring main unit (RMU) One or a combination of ring main switches and/or switch fuses used to control and operate HV underground systems.

Ruling Span The ruling span (or equivalent span) is defined as that span which behaves identically to the tension in every span of a series of suspension span under the same loading tension. The value of the ruling span is found in the design drawings of the respective line.

Safety Ability of a system not to cause human injuries or loss of lives during construction, operation and maintenance.

Safety observer A competent person assigned by the person in charge and whose sole function is to observe and warn against unsafe approach to live electrical apparatus or unsafe conditions.

Sanction to test (STT) Western Power’s standard form authorising the testing of electrical apparatus.

SCADA Supervisory Control and Data Acquisition.

SPUDS Single-phase underground distribution system.

SOCC System Operations Control Centre. SOCC is responsible for control of the Transmission Network.

SPIDAWeb Distribution and Facilities Information System. A geographical information system (GIS) that allows users to view the electrical distribution network in relation to physical geographical location in Western Australia. Users can view and analyse network assets using spatial information.

SWER Single-wire earth return.

SWIS South West Interconnected System.

Switching The operation of circuit breakers, isolators, disconnectors, fuses or other methods of making or breaking an electrical circuit and/or the application and removal of programmed earths.

Switching authority An authority that has been issued an approval to give approval to perform switching operations.

Switching operator A person authorised by the operating authority to carry out switching operations within the limits of their authorisation.

Test The measurement of electrical apparatus, with an approved device, to establish the present condition.

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Tester in charge A person authorised to receive and relinquish a sanction to test (STT) within the limits of their authorisation.

Test voltage The voltage which must be applied to the specified equipment for the purpose of periodic electrical testing.

TNO Technical network officer.

XLPE Cross-linked polyethylene.

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Section 1 – Overhead lines The intention of this section is to provide details of the commissioning requirements of overhead conductors and cables. This section contains details of the following installation types:

1. High voltage (HV) overhead powerlines

2. Low voltage (LV) overhead lines

3. LV aerial bundled conductor (ABC)

4. HV ABC and Hendrix spacer cable.

Note:

Prior to commencing work, personnel must ensure that they are authorised for the role and qualified in the training requirements to work on commissioning distribution equipment. For more information, see Appendix 1 - Commissioning Officer authorisation requirements to commission distribution equipment (DM#11415730) in this manual.

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1.1 HV overhead powerlines 1.1.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of HV overhead powerlines (three phase and single phase).

Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual, the Switching Operators manuals and the switchgear manufacturer’s operating and commissioning manual.

1.1.2 Equipment pre-handover status HV overhead conductors shall be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.

Where down earths are provided for system earthing or earth wire installed, the installer must issue an earthing testing schedule and handover certificate to the operating authority.

1.1.3 Pre-commissioning checks The following checklist must be completed prior to any commissioning activities:

1. Check the handover certificate.

2. Check and ensure that the SPIDAWeb pick IDs or pole numbers for each item are in accordance with the as-constructed drawings. Record details on the commissioning sheet.

3. Check and record the work package number.

4. Record the following on the commissioning sheet:

date when the conductor was tensioned

size and type of conductor

conductor temperature when it was tensioned

the ruling span length of the line

the conductor tension in kilograms or beat bay length in metres or the tension in seconds per 5 wave return. Compare the results with the design tension or appropriate conductor sag and tension tables to ensure that the conductor was tensioned correctly.

5. Ensure all earth points have acceptable test results and record them on the earth testing commissioning sheet. The earth testing commissioning sheets must be handed over to the commissioning officer for checking.

6. The commissioning officer must check the earthing points, ensuring that the connections and inspection pit are correctly installed as per the appropriate construction standard.

Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

1.1.4 Commissioning of the equipment 1. Carry out the commissioning program in accordance with the Switching Operators manuals and the switching

program.

2. Phase out under Network Operation Control Centre (NOCC) switching schedules across the normally open point.

3. Ensure all equipment is in its final circuit condition and all normally open points are set to their designated position.

4. Ensure all equipment is locked, signposted and protected from unauthorised access.

5. Ensure the work area is left tidy with no hazards to the public.

6. Hand over responsibility to the operating authority.

7. Return the relevant form to the project file as a record of the commissioning/handover certificate.

8. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager (for work performed by Western Power employees); the service manager (for contractors); or the project manager (for the Future Grid).

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OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION

1.1 – HIGH VOLTAGE OVERHEAD POWERLINES

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage overhead powerlines (three phase and single phase) Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: __________________________________________________________________________

Work Package No.: _____________________ SPIDAWeb Pick ID/Pole No. (from): ______________________ (to): _____________________

1. CONDUCTOR TENSION CHECK

Tension the conductors as per the conductor tension table and record the details.

Date tensioned / / Conductors at correct tension

Conductor size and type Conductor temperature °C Ruling span (bay) length metres Tension (dynamometer) kg Beat bay length metres Tension (beat method) seconds per 5 wave return

2. INSTALLATION AND CONSTRUCTION CHECKS

Inspect the constructed line and carry out the following checks:

Ensure that the earth resistance test results at all earth points are acceptable.

Check that the construction complies with the distribution construction standards and applicable design drawings.

Check that the structures are numbered and labelled correctly.

Check the conductor arrangement and ensure correct clearances from the ground, buildings and trees.

Check the conductor for damage and ensure it is secured correctly.

Check that all line taps and earth connections are completed correctly and secured.

Check that all the ground work is completed.

3. ENERGISATION

Energisation of the high voltage overhead line

Ensure that all working earths and programmed earths are removed (if applicable).

Check that the high voltage fuses are correct (if applicable).

Energise the line as per the switching program number.

Phase out under NOCC switching schedules across the normally open point.

4. HANDOVER OF RESPONSIBILITY

I hereby certify that items 1 to 3 have been completed with the above results and transfer control to the network operating authority.

Commissioning officer: _______________________________________ NAC #: _____________________

Signature: ______________________________________________ Date & time: _____________________

1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the

construction manager (for work performed by Western Power employees); the service manager (for contractors); or the project manager (for the Future Grid).

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1.2 LV overhead lines 1.2.1 Purpose This instruction covers the testing and commissioning of all replacements of LV bare overhead lines.

Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual and Switching Operators Manual 1.

1.2.2 Related information None.

1.2.3 Equipment pre-handover status An LV overhead conductor must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.

1.2.4 Pre-commissioning checks 1. Check the handover certificate.

2. Check and ensure that the SPIDAWeb pick IDs or pole numbers for each item are in accordance with the as-constructed drawings.

3. Check that all line taps are correctly placed and secure.

4. Check that the neutral and phase conductor arrangement is correct.





the average span (bay) length of the line

the conductor tension in kilograms or beat bay length in metres or the tension in seconds per 5 wave return. Compare the results with the design tension or appropriate conductor sag and tension tables to ensure that the conductor was tensioned correctly.


1.2.5 Commissioning of the equipment 1. Carry out the commissioning in accordance with the Switching Operators manuals and the switching program.

2. Conduct a service connection test on all installations where the service connections have been disturbed.

3. If the LV network is to be interconnected with another LV network, phase out at the normally open point; otherwise phase out as required.

4. Where new LV disconnectors have been installed, they must be phased out and checked.

5. Ensure all equipment is in a final circuit condition and all normally open points are set to their designated position.

6. If applicable, ensure all equipment is locked, signposted and protected from unauthorised access.





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1.2 – LOW VOLTAGE OVERHEAD LINES

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of low voltage bare overhead lines. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ________________________________________________________________________ Work Package No.: ________________________ SPIDAWeb Pick ID/Pole No. (from): ________________ (to): ________________ 1. CONDUCTOR TENSION TEST



Conductor size and type Conductor temperature °C Ruling span length metres Tension (dynamometer) kg Beat span (bay) length metres Tension (beat method) seconds per 5 wave return




Check that the structures are numbered and labelled correctly. Check the conductor arrangement and ensure correct clearances from the ground, buildings and trees.


Check that all line taps and neutral connections are completed correctly and secured.


3. ENERGISATION

Energisation of the overhead low voltage network.

Ensure that all short-circuiting equipment has been removed.

Check that the low voltage fuses are correct (if applicable).

Energise the circuit in accordance with the low voltage switching program.

Record the switching program number. Conduct a service connection test on all installations where the service connections have been disturbed.

If the LV network is to be interconnected with another LV network, phase out at the normally open point; otherwise phase out as required.


I hereby certify that items 1 to 3 have been completed with the above results and transfer control to the network operating authority. Commissioning officer: _______________________________________ NAC #: _____________________




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1.3 LV ABC 1.3.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of LV ABC.

Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual and Switching Operators Manual 1.

1.3.2 Equipment pre-handover status LV ABCs must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.

1.3.3 Pre-commissioning checks 1. Check the handover certificate.





date the conductor was tensioned



the ruling span length of the line.


1.3.4 Test criteria

1.3.4.1 Continuity test

Use a resistor box (2 MΩ, 7 MΩ and 11 MΩ) in conjunction with a 500 V insulation resistance tester to identify the cable end and phases. The test results depend on the resistor box used.

1.3.4.2 Insulation resistance test 1. Use a 500 V insulation resistance tester (never use 5 kV insulation tester for this test) for a minimum of

1 minute.

2. Values greater than 100 MΩ for new cables and greater than 10 MΩ for aged cables are acceptable.

3. Discharge the cable with shorting leads and safety earth leads on the cable prior to testing.

4. Inform safety observers (where present) that testing is about to commence.

5. Ensure all personnel engaged in performing this task have vacated the test area and are outside the safety barriers.

6. Remove any safety earth or earth switches on the cable to be tested prior to testing.


program.



4. Where new LV disconnectors have been installed, they must be phased out and checked.


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OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION 1.3 – LOW VOLTAGE AERIAL BUNDLED CONDUCTOR

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of a low voltage aerial bundled conductor Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: ________________________________________________________________________

Work Package No.: ______________________ SPIDAWeb Pick ID/Pole No. (from): _________________

(to): _________________ 1. CONDUCTOR TENSION TEST



Conductor size 150 mm 95 mm

Conductor temperature °C

Average bay length metres

Tension (dynamometer) kg

2. CONTINUITY TEST

Use a resistor box and 500 V insulation resistance tester to positively distinguish cable ends.

Test connections Test results Resistor values Red to neutral Ω Ω White to neutral Ω Ω Blue to neutral Ω Ω

3. INSULATION RESISTANCE TEST

Use a 500 V insulation resistance tester for a minimum of 1 minute.

Test connections Test results Acceptable values

Red to white Ω

100 MΩ or higher for new cables 10 MΩ or higher for aged cables

White to blue Ω

Blue to red Ω

Red to neutral Ω

White to neutral Ω

Blue to neutral Ω


Checks



Check the conductor arrangement and ensure correct clearances from the ground, buildings and trees.


Check that all line taps and neutral connections are completed correctly and secured.


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5. ENERGISATION

Energisation of the overhead LV network

Ensure that all short-circuiting equipment has been removed.

Check that the low voltage fuses are correct (if applicable).

Energise the circuit in accordance with the low voltage switching program.

Record the switching program number. _______

Conduct a service connection test on all installations where the service connections have been disturbed.



I hereby certify that all items have been completed with satisfactory results and transfer control to the project manager.

Commissioning officer: ___________________________________ NAC #: _________________________




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1.4 HV ABC and Hendrix spacer cable 1.4.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of HV ABC and Hendrix spacer cable.

Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual, Switching Operators Manual 1 and the HV ABC and Hendrix Manual.

1.4.2 Equipment pre-handover status The purpose of this instruction is to clearly outline the testing and commissioning of HV ABC cables.

HV ABC and Hendrix spacer cables must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01, the HV ABC and Hendrix spacer cables manuals and applicable design drawings.

1.4.3 Pre-commissioning checks The following is a checklist to be completed prior to any commissioning activities:









the ruling span length of the line.


1.4.4 Test criteria

1.4.4.1 Continuity test

Use a resistor box (2 MΩ, 7 MΩ and 11 MΩ) in conjunction with a 500 V insulation resistance tester (never use 5 kV insulation tester for this test) to identify the cable end and phases. Record the test results (MΏ) for each phase to screen.

1.4.4.2 Insulation resistance test 1. Use a 5 kV insulation resistance tester for a minimum of 1 minute.

2. Values greater than 10,000 MΩ for new cables and greater than 100 MΩ for aged cables are acceptable.

3. Discharge the cable with shorting leads and safety earth leads on the cable prior to testing.

4. Inform safety observers (where present) that testing is about to commence.


6. Remove any safety earth or earth switches on the cable to be tested prior to testing.

Note: Testing of the apparatus is detailed in the Distribution Commissioning Work Instruction.

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program.

2. Phase out under NOCC switching schedules across the normally open point, if applicable.







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OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION 1.4 – HIGH VOLTAGE AERIAL BUNDLED CONDUCTOR

AND HENDRIX SPACER CABLE Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage aerial bundled conductor and Hendrix spacer cable. Note: The following tests must be carried out after installation, alteration, repair or jointing and before the cable is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ___________________________________________________________________________________

Work Package No.: ___________________________ SPIDAWeb Pick ID/Pole No. (from): ________________________

(to): ________________________ 1. CATENARY/MESSENGER TENSION CHECK



Conductor size and type

Conductor temperature °C Average bay length metres Tension (dynamometer) kg Hendrix cable sag cm

2. CONTINUITY TEST

Use a resistor box and 500 V insulation resistance tester to positively distinguish cable ends.

Test connections Test results Resistor box values Red to neutral Ω Ω White to neutral Ω Ω Blue to neutral Ω Ω


Use a 5 kV insulation resistance tester for a minimum of 1 minute.

Test connections Test results Acceptable values Red to white Ω

10,000 MΩ or higher for new cables

100 MΩ or higher for aged cables

White to blue Ω Blue to red Ω Red to earth Ω White to earth Ω Blue to earth Ω



Ensure that the earth resistance test results at all earth points are acceptable. Check that the construction complies with the distribution construction standards and applicable design drawings.

Check that the structures are numbered and labelled correctly. Check the conductor arrangement and ensure correct clearances from the ground, buildings and trees.

Check the conductor for damage and ensure it is secured correctly. Check that all line taps and earth connections are completed correctly and secured.

Check lightning arresters and earthing bars are in place where applicable.


Ensure that all construction team leaders have transferred control of the project to the switching officer.

5. ENERGISATION

Energisation of the high voltage aerial bundle conductor or Hendrix spacer cable.

Ensure that all program earths and working earths are removed (if applicable).

Energise the line as per the switching program number.

Phase out under NOCC switching schedules across the normally open point, if applicable.

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6. HANDOVER OF RESPONSIBILITY I hereby certify that all items have been completed with satisfactory results and transfer control to the network operating authority.

Commissioning officer: ______________________________________________ NAC #: ________________________

Signature: ___________________________________________________ Date & time: ________________________

1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file folder as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager

(for work performed by Western Power employees); the service manager (for contractors); or the project manager (for the Future Grid).

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Section 2 – Underground cable The intention of this section is to provide the commissioning requirements for underground equipment. This section currently contains details for the following installations:

1. HV cross-linked polyethylene (XLPE) cable

2. HV mixed cable

3. HV paper-insulated belted cable

4. HV paper-insulated screened cable

5. LV XLPE cable

6. LV cables with/without pillars

7. Steel standard streetlights

8. Single-phase underground distribution system (SPUDS) single-phase to three-phase pillar

9. Pole to pillar.

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2.1 HV XLPE cable 2.1.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of HV XLPE cable.

2.1.2 Scope This instruction is to be used for the commissioning of all HV XLPE cable installations in Western Power’s South West Interconnected System (SWIS) distribution network.

All HV XLPE cables, including cable joints and terminations, must be tested following installation, alteration, repair or jointing (including under fault situations) to confirm that the insulation levels and integrity of the cable system are within acceptable values.

HV XLPE cables must never be tested with a HV DC cable tester (high potential (hipot)), as it may cause damage to the cable.

2.1.3 References

AS/NZS 1429.1–2006: Electric Cables – Polymeric Insulated – for working voltages 1.9/3.3 (3.6) kV up to and including 19/33 (36) kV.

DM# 1564423: Transmission substation maintenance services: transmission testing services (for HV cables).

2.1.4 Equipment pre-handover status The cable must be installed, terminated and jointed in accordance with the appropriate guidelines in the Underground Distribution Systems Policy and Installations Options Manual, the Electrical System Safety Rules, the Work Practice Manual and applicable design drawings.

The installer must affix permanent labels to all relevant network equipment such as transformers, switch fuse units and RMUs, stating the destination of all cables.

Insulation, continuity and phasing tests must be carried out and the results recorded.

On completion, the installer must issue cable testing schedules and a handover certificate to the operating authority.

2.1.5 Responsible persons The project manager or officer in charge must be responsible for the performance of testing in accordance with this instruction.

The testing officer must be responsible for carrying out tests in accordance with this instruction and recording all test results and explanatory comments where relevant.


1. Check the cable handover certificate. Note: In most cases a combined handover certificate is issued for the transformer and cables.

2. Check the HV XLPE cable testing schedule.

3. Prepare permanent cable destination labels in accordance with Distribution Equipment Labelling – Network Standard NS 05-2000.

4. Check that the HV screens are all solidly and separately bolted to the HV earth bar.

5. Go to the site and verify that the equipment has been installed correctly and is suitable for service as per the as-constructed drawing.

6. Carry out a detailed and thorough check of all assets.

7. Check that there are no cables exposed to the public, and backfill if required. The cables must be set up as a working end in a pillar, and the pillar must be painted white and labelled. In the CBD (or wherever a pillar is not practical), the working end can be buried (if applicable).


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2.1.7 Test criteria 1. The following test equipment is required for the tests outlined in this instruction:

a 500 V insulation resistance tester

a 5 kV insulation resistance tester

Resistor box

a 0.01–1.0 Hz very low frequency (VLF) tester for a test voltage up to 60 kV.

2. Ensure surge arresters are disconnected for testing from pole cable termination (if applicable).

3. HV XLPE cable MUST NOT be tested using DC hipot test equipment. HV tests may only be conducted using a 5 kV insulation resistance meter or an approved VLF test set.

4. All HV XLPE cables must be tested as follows:

For transformer cables ≤ 250 metres and without in-line joints, conduct an end-to-end phasing test, an insulation resistance test and a sheath integrity test.

For transformer cables >250 metres and/or with in-line joints, conduct an end-to-end phasing test, an insulation resistance test, a sheath integrity test, a VLF test and an insulation resistance test (post–VLF test).

For feeder cables, conduct an end-to-end phasing test, an insulation resistance test, a sheath integrity test, a VLF test and an insulation resistance test (post–VLF test).

2.1.7.1 End-to-end phasing test

Use a resistor box (2 MΩ, 7 MΩ and 11 MΩ) in conjunction with a 500 V insulation resistance tester to identify the cable end and phases. Record the test results (MΩ) of each phase to screen.

2.1.7.2 Insulation resistance test Test the insulation resistance using a 5 kV insulation resistance tester between each phase conductor and its corresponding cable screen. Record the measured resistance (MΩ/GΩ). The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. Values greater than 10,000 MΩ/10 GΩ are acceptable.

2.1.7.3 Sheath integrity test Test the sheath integrity using a 5 kV insulation resistance tester between screen and earth. Record the measured values. Values greater than 1,000 MΩ/1 GΩ for new cables and 100 MΩ for old cables are acceptable.

The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. The test is carried out using a 5 kV insulation resistance tester between each cable screen to earth. Record the measured resistance (MΩ/GΩ).

Note: If the insulation resistance test is <1,000 MΩ for new cables and <100 MΩ for old cables, notify appropriate authorities (CPM) for further testing and repair; otherwise proceed.

2.1.7.4 VLF test Using a VLF tester, test between conductors to screens (which must be earthed) for 60 minutes at a voltage of 3 VN in the frequency range of 0.01–1.0 Hz (subject to the length of the cable). The result is acceptable if no breakdown occurs.

System voltage VN Test voltage 3 VN (kV)

Peak RMS 6.6 kV 3.8 kV 12.0 9.0

11 kV 6.35 kV 19.0 14.0

22 kV 12.7 kV 38.0 27.0

33 kV 19.1 kV 57.0 41.0

Note: For maintenance of cables the test voltage is to be reduced to 80% for existing cable and to 60% for ageing cable (greater than 30 years of service).

Note: Repetitive VLF testing of a cable should be avoided.

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2.1.7.5 Insulation resistance test (post–VLF test) After the VLF test, carry out an insulation resistance test using a 5 kV insulation resistance tester between phase to phase and earth. The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. Values greater than 10,000 MΩ/10 GΩ are acceptable. Record the measured values.


2.1.8 Commissioning of the equipment

1. Carry out the commissioning in accordance with the Switching Operators manuals and the switching program.



4. Hand over responsibility for the completion of the form.



7. The testing officer, cable jointer, construction project manager and commissioning officer must sign off on the testing schedule.

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2.1 – HIGH VOLTAGE XLPE CABLE

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage cross-linked polyethylene (XLPE) cable. Note: XLPE cable must never be tested with a high voltage DC cable tester (high potential), as it may cause damage to the cable. These tests must be carried out after installation, alteration, repair or jointing and before the cable is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.: ______________ SPIDAWeb Pick ID: _____________ Test Site: ___________________

Location of the cable (from): __________________________________________________________________

(to): __________________________________________________________________ 1. CABLE DESCRIPTION

Rated voltage: kV Length of the cable (approx): m No. of in-line joints:

Size of the cable: mm² Cable function: Transformer cable Feeder cable

2. VISUAL INSPECTION AND SAFETY CHECK

Ring main switch

Ring main earth switch

Cap test points

Cable

Cable surge arresters


Check the switchgear to ensure the switch is in the OFF position. N/A

Check the equipment mimic diagram to confirm the earth switch is in the ON position. N/A

Ensure that the interlock is disengaged to access the cable/compartment for test purposes.

Confirm that the cables are de-energised (with an approved testing device) before proceeding further.

Ensure that the earthing system is completed and undamaged if possible.

Wherever possible, check that there is no physical damage to the cable or equipment.

Check that the cable is clearly marked with each phase colour and labelled (if applicable).

Ensure the surge arresters are disconnected from cable terminations (if applicable).

3. END-TO-END PHASING TEST

Use a resistor box in conjunction with a 500 V insulation resistance tester to identify the cable end and phases.

Test Connection Resistor Values Test Results Red phase – screen MΩ MΩ

White phase – screen MΩ MΩ

Blue phase – screen MΩ MΩ


Conduct an insulation resistance test for 1 to 10 minutes (subject to the length of the cable) or until the reading is stable.

Use a 5 kV insulation resistance tester between each phase conductor and the corresponding cable screen.

Test Connection Minimum Values Test Results Red phase conductor to red cable screen >10,000 MΩ/10 GΩ Ω

White phase conductor to white cable screen >10,000 MΩ/10 GΩ Ω

Blue phase conductor to blue cable screen >10,000 MΩ/10 GΩ Ω

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5. SHEATH INTEGRITY TEST

Conduct an insulation resistance test for 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. Use a 5 kV insulation resistance tester between each cable screen to earth.

New Cable (>1,000 MΩ) Old Cable (>10 years old) (>100 MΩ) Test Connection Minimum Values Test Results

Red phase cable screen to earth >100 MΩ/(1,000 MΩ/1 GΩ) Ω

White phase cable screen to earth >100 MΩ/(1,000 MΩ/1 GΩ) Ω

Blue phase cable screen to earth >100 MΩ/(1,000 MΩ/1 GΩ) Ω

If the insulation resistance test is <1,000 MΩ for new cables and <100 MΩ for old cables, notify the appropriate authorities (construction project manager) for further testing or repair; otherwise proceed. Note: Not applicable for mixed cables. Note: Refer to items 8 and 9 (Very Low Frequency Test and Insulation Resistance Test) for all feeder cables or where the cable is greater than 250 metres in length or has in-line joints.

6. CABLE TERMINATION CHECKS Ensure all the cable connections and terminations are made and tightened to the required manufacturer standard.

Ensure all the cables are clearly and correctly labelled.

7. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1–6

I hereby certify that items 1 to 6 have been completed with satisfactory results and transfer control to the commissioning officer. Testing officer/cable jointer/CPM: ___________________________ NAC #: _______________________

Signature: ______________________________________________ Date & time: _______________________

The commissioning officer must sign this document before energisation.

8. VERY LOW FREQUENCY (VLF) TEST (TO BE CONDUCTED BY HV LAB OR WESTERN POWER APPROVED TESTING CONTRACTORS)

Test Connection Value

Pass

Fail

Set the VLF tester to apply the required voltage at a 0.01–1.0 Hz frequency (subject to the length of the cable) for 60 minutes for phases to screen (earth). Record the applied voltage as per Western Power procedures (DM# 1564423). Note: For maintenance of cables the test voltage is to be reduced to 80% for existing cable and to 60% for ageing cable (greater than 30 years of service).

_________ kV

AC (VLF) Tester—Triplex or Single-Phase XLPE Cable

Connection Voltage Peak Test Duration Start Leakage (mA) Finish Leakage (mA)

R+W+B to E 60 min

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9. INSULATION RESISTANCE TEST (POST–VLF TEST)


After the VLF test, use a 5 kV insulation resistance tester between phase to phase and earth. Record the measured values.

Test Connection

Minimum Values MΩ

DONE? Please Tick

Test Results

Red to (white & blue) phase & earth >10,000 MΩ/10 GΩ Ω

White to (red & blue) phase & earth >10,000 MΩ/10 GΩ Ω

Blue to (red & white) phase & earth >10,000 MΩ/10 GΩ Ω

If the insulation resistance test is <1,000 MΩ for new cables and <100 MΩ for old cables, did the cable sheath withstand an applied HV of 4 kV DC per millimetre applied between the screen and the outer sheath (ground) without any puncture? YES NO

If NO, the tester needs to locate the sheath fault and report to the CPM to arrange for repair. Note: Not applicable for mixed cables.


I hereby certify that items 7 to 9 have been completed with satisfactory results and transfer control to the project manager.

VLF testing officer: _______________________________________ NAC #: __________________________

Signature: _________________________________________ Date & time: __________________________

11. HANDOVER OF RESPONSIBILITY The commissioning officer must ensure that all checks are completed and the test results comply with the minimum standards. Note: Phase out under NOCC switching schedules across the normally open point, if applicable.

I hereby certify that all items have been completed with satisfactory results and transfer control to the network operating authority.

Commissioning officer: ___________________________________ NAC #: __________________________

Signature: _________________________________________ Date & time: __________________________



DCWI


2.2 HV mixed cable 2.2.1 Purpose This instruction covers the testing and commissioning of all replacements and new installations of HV mixed cable. Mixed cable refers to different types of cable (made of different insulation materials and construction methods) that are inseparably linked together.

2.2.2 Scope This instruction is to be used for the commissioning of all HV mixed cable installations in Western Power’s SWIS distribution network.

All HV cables, including cable joints and terminations, must be tested following installation, alteration or repair to confirm the insulation levels and integrity of the cable system.

2.2.3 References

AS/NZS 1026–2004: Electrical Cables – Impregnated Paper Insulated – Working voltages up to and including 33 kV.

AS 1429.1–2006: Electric Cables – Polymeric Insulated – For working voltages 1.9/3.3 (3.6) kV up to and including 19/33 (36) kV.

DM# 1564423: Transmission substation maintenance services: transmission testing services (for HV cables).


The installer must affix permanent labels to all relevant network equipment such as transformers and switch fuse units and RMUs, stating the destination of all cables.


2.2.5 Responsible persons

The project manager or officer in charge is responsible for testing in accordance with this instruction.

The tester officer is responsible for testing in accordance with this instruction and recording all test results and explanatory comments where relevant.

2.2.6 Pre-commissioning checks The following checklist to be completed prior to any commissioning activities:

1. Check the cable handover certificate. Note: In most cases a combined handover certificate is issued for the transformer and cables.

2. Verify (on site) that equipment has been installed correctly and is suitable for service as per the as-constructed drawing.

3. Carry out a detailed and thorough check of all assets.

4. Check that there are no cables exposed to the public, and backfill if required. The cables must be set up as a working end in a pillar, and the pillar must be painted white and labelled. In the CBD area (or where a pillar is not practical), the working end can be buried.

The linking together of different types of cables in a circuit imposes limitations on permissible commissioning tests.


2.2.7 Test criteria 1. The following test equipment is required for the tests outlined in this instruction:

a 500 V insulation resistance tester a 5 kV insulation resistance tester.

Resistor box

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Note: HV DC testing must not be carried out on XLPE cables.

2. Test the cable:

after installation and before it is put into service

after alteration, repair or jointing and before it is put back into service.

3. Paper-insulated cables may be of belted or screened construction. There are many belted 6.6 kV and 11 kV cables in service and they will remain for a long time.

4. All paper-insulated cables connected to system voltages greater than 11 kV are of screened construction. (Belted cables are not manufactured for system voltages greater than 11 kV.)

5. Whenever possible, the testing of individual cables comprising a mixed cable circuit should be completed before the cables are inseparably linked.

2.2.8 XLPE and paper-insulated cables inseparably linked HV circuits comprising mixed cables must be tested.

The linking together of different types of cables in a circuit imposes limitations on permissible commissioning tests.

Circuits comprising two or more cables of differing insulation material and construction which are inseparably linked must be subjected to the following tests:



2.2.8.2 Insulation resistance test Test the insulation resistance using a 5 kV insulation resistance tester between conductor to conductor and conductors to earth. Record the measured resistance (MΩ/GΩ). The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. Values greater than 200 MΩ for XLPE-PILC belted, and greater than 500 MΩ for XLPE-PILC screened are acceptable.

2.2.8.3 VLF test Using a VLF tester, test between conductors to screens (which must be earthed) for 60 minutes at a voltage of 3 VN at a frequency range of 0.01–1.0 Hz (subject to the length of the cable). The results are acceptable if no breakdown occurs.

System voltage VN Test voltage 3 VN (kV)

Peak RMS 6.6 kV 3.8 kV 12.0 9.0

11 kV 6.35 kV 19.0 14.0

22 kV 12.7 kV 38.0 27.0

33 kV 19.1 kV 57.0 41.0

Note: For maintenance of cables the test voltage is to be reduced to 80% for existing cable and to 60% for ageing cable (greater than 30 years of service). Note: Repetitive VLF testing of a cable should be avoided.

2.2.8.4 Insulation resistance test (post–VLF test) 1. Test the insulation resistance using a 5 kV insulation resistance tester between conductor and screen.

2. Record the measured values. Values greater than 200 MΩ for XLPE-PILC belted, and greater than 500 MΩ for XLPE-PILC screened are acceptable.

3. After the VLF test, carry out an insulation resistance test using the 5 kV insulation resistance tester between phase to phase and earth. Record the measured values. The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable.


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2.2 – HIGH VOLTAGE MIXED CABLE

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage mixed cable. Note: Mixed cable refers to different types of cable (made of different insulation materials and construction methods) that are inseparably linked together. Whenever possible, the individual cables comprising a mixed cable circuit should be tested before the cables are jointed. The following tests must be carried out after installation, alteration, repairs or jointing and before the cable is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.: _____________ SPIDAWeb Pick ID: ____________ Test Site: _________________ Location of the cable (from): _____________________________________________________________ (to): _____________________________________________________________ 1. CABLE DESCRIPTION




Ring main switch


Cap test points

Cable





Ensure that the interlock is disengaged to access the cable/compartment for test purposes


Ensure that the earthing system is complete, undamaged and bonded to earth points.



Ensure the surge arresters are disconnected from the-cable terminations (if applicable). 3. END-TO-END PHASING TEST


Test Connection Resistor Values Test Results

Red phase – neutral MΩ MΩ

White phase – neutral MΩ MΩ

Blue phase – neutral MΩ MΩ 4. INSULATION RESISTANCE TEST


Use a 5 kV insulation resistance tester between each phase conductor and each phase conductor to earth. Values should be greater than 200 MΩ.

Test Connection Expected Values

Resistance Belted Screened

Red to (white & blue) phase & earth/screen >200 MΩ >500 MΩ MΩ

White to (red & blue) phase & earth/screen >200 MΩ >500 MΩ MΩ

Blue to (red & white) phase & earth/screen >200 MΩ >500 MΩ MΩ

Bond all conductors and test between phases and earth. >200 MΩ >500 MΩ MΩ

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5. VERY LOW FREQUENCY (VLF) TEST (TO BE CONDUCTED BY HV LAB OR WESTERN POWER APPROVED TESTING CONTRACTORS)

Test Connection Value

Pass

Fail

Set the VLF tester to apply the required voltage at a 0.01–1.0 Hz frequency (subject to the length of the cable) for 60 minutes for phases to screen (earth). Record the applied voltage as per Western Power procedures (DM# 1564423). Note: For maintenance of cables the test voltage is to be reduced to 80% for existing cable and to 60% for ageing cable (greater than 30 years of service).

_______ kV

AC (VLF) Tester—Triplex or Single-Phase (Mixed) XLPE Cables

Connection Voltage Peak Test Duration Start Leakage (mA) Finish Leakage (mA)

A+B+C to E 60 min

6. INSULATION RESISTANCE TEST (POST–VLF TEST)


After the VLF test, conduct an insulation resistance test using a 5 kV insulation resistance tester between phase to phase and earth. Record the measured values.

Test Connection Minimum Values

Please Tick Test Results Belted Screened

Red to (white & blue) phase & earth/screen >200 MΩ >500 MΩ MΩ

White to (red & blue) phase & earth/screen >200 MΩ >500 MΩ MΩ

Blue to (red & white) phase & earth/screen >200 MΩ >500 MΩ MΩ

The commissioning officer must sign this document before energisation. 7. CABLE TERMINATION CHECKS

Ensure all the cable connections and terminations are made and tightened to the required manufacturer standard.



I hereby certify that items 1 to 7 have been completed with satisfactory results and transfer control to the network operating authority.

Testing officer/cable jointer/CPM: _________________________ NAC #: ___________________________

Signature: ________________________________________ Date & time: ___________________________

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9. HANDOVER OF RESPONSIBILITY Commissioning officer must ensure that all checks are completed and the test results comply with the minimum standards. Note: Phase out under NOCC switching schedules across the normally open point, if applicable.


Commissioning officer: _________________________________ NAC #: ___________________________

Signature: ________________________________________ Date & time: ___________________________



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2.3 HV paper-insulated belted cable 2.3.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of HV paper-insulated screened cable.

2.3.2 Scope This instruction must be followed for all HV paper-insulated screened cable installations in Western Power’s SWIS distribution network.

All HV paper-insulated cables, including cable joints and terminations, must be tested following installation, alteration or repair to confirm the insulation levels and integrity of the cable system.

2.3.3 References

AS/NZS 1026–2004: Electrical Cables – Impregnated Paper Insulated – For working voltages up to and including 19/33 (36) kV.

DM# 2074500v2 Testing of High Voltage Paper Insulated (Belted) Cables


The installer must affix permanent labels to all relevant network equipment such as transformers and switch fuse units and RMUs, stating the destination of all cables.




The tester officer is responsible for carrying out tests in accordance with this instruction and recording all test results and explanatory comments where relevant.

2.3.6 Pre-commissioning checks The following test equipment is required for the tests outlined in this instruction:



Resistor box

a single-output (DC negative) hipot tester for a test voltage of up to 60 kV

a positive/negative output DC hipot tester for a test voltage of up to 27 kV.

Paper-insulated cables may be of belted or screened construction.

All paper-insulated cables connected to system voltages greater than 11 kV are of screened construction. (Belted cables are not manufactured for system voltages greater than 11 kV.)

Test the cable:




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2.3.7 Test criteria Faults mainly occur in these cables from core to earth because each core is continuously wrapped in metal foil (the screen). The only exception is at the cable terminations, where the foil is cut back. This creates a small risk of a core-to-core fault at this location.

HV paper-insulated screened cables must be subjected to the following tests:



2.3.7.2 Insulation resistance test The insulation resistance is tested using a 5 kV insulation resistance tester connected conductor to conductor and between conductors to sheath. Record the measured values.

Test the insulation resistance using a 5 kV insulation resistance tester between conductor to conductor and conductors to earth. Record the measured resistance (MΩ/GΩ). The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. Values greater than 200 MΩ are acceptable.

2.3.7.3 Hipot test

• In accordance with the cable-designated voltage or system voltage, apply the recommended test DC voltage for 15 minutes between all conductors connected together and the sheath (R+W+B to sheath). The cable sheath is earthed. The test is acceptable if no breakdown occurs.

In accordance with the cable-designated voltage or system voltage, apply the test DC voltage for 15 minutes R to W+B and W to B+R. The cable sheath is earthed. The test is acceptable if no breakdown occurs.

Phase to earth (lead and armour together). A single-output (negative) tester or a positive and negative output tester may be used for an all-conductors-to-sheath hipot test. The conductors must be connected to the negative output. Bond all phase conductors and connect them to the negative output hipot test set. Apply DC HV according to the cable-designated voltage or system voltage, whichever is lesser, for 15 minutes. (Refer to the table below.)

A cable tester with positive and negative outputs MUST be used for phase-to-phase hipot testing. A cable tester with a single-terminal (negative) HV output must not be used for core-to-core testing. This test must be performed exclusively using a positive and negative hipot tester. Both the lead sheath and armour should be earthed for this test. Apply DC HV according to the cable-designated voltage for 15 minutes as per the following table.

Cable-designated or system voltage

kV

Test DC voltage (1) applied for 15 minutes

Between all conductors-to-sheath belted cables

kV

Between conductor-to-conductor belted cables

kV

3.8/6.6 12.0 16.0

6.35/11 20.0 27.0

Test voltage (belted cables) after repair or cut-in.

Note: (1) The test DC voltage is based on Table B3 of AS/NZS 1026 – 2004 with an applied derating factor of 0.8. This factor accommodates the service ageing of cables.


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2.3 – HIGH VOLTAGE PAPER-INSULATED BELTED CABLE

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage paper-insulated belted cable. Note: The following tests must be carried out after installation, alteration, repair or jointing and before the cable is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.:_____________ SPIDAWeb Pick ID:_____________ Test Site: _________________

Location of the cable (from): ______________________________________________________________

(to): ______________________________________________________________ 1. CABLE DESCRIPTION

Rated voltage: kV Length of the cable (approx): m No of in-line joints:



Ring main switch


Cap test points

Cable



Check the switchgear to ensure the switch is in the OFF position. N/A Check the equipment mimic diagram to confirm the earth switch is in the ON position. N/A Ensure that the interlock is disengaged to access the cable/compartment for test purposes





Ensure the surge arresters are disconnected from the cable terminations (if applicable).


A resistor box is generally used in conjunction with a 500 V insulation resistance tester to identify the cable end and phases.


Red phase – screen MΩ MΩ





This test is to be carried out using a 5 kV insulation resistance tester between conductor to conductor and conductors to earth.

Test Connection Expected Values Resistance

Red to (white & blue) phase & earth/screen >200 MΩ MΩ

White to (red & blue) phase & earth/screen >200 MΩ MΩ

Blue to (red & white) phase & earth/screen >200 MΩ MΩ

Bond all conductors and test between phases and earth >200 MΩ MΩ

5. HIGH VOLTAGE (HIPOT) TEST A) Phase-to-Earth Test B) Phase-to-Phase Test





3.8/6.6 kV 12.0 kV 3.8/6.6 kV 16.0 kV

6.35/11 kV 20.0 kV 6.35/11 kV 27.0 kV

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5.A – PHASE-TO-EARTH (LEAD AND ARMOUR TOGETHER) TEST This test can be performed using a single-output (negative) hipot tester or a positive and negative output hipot tester. Bond all phase conductors and connect to the negative output of the hipot test set. Apply DC high voltage according to the cable-designated voltage or system voltage, whichever is the lesser, for 15 minutes as per the above table. The test is acceptable only if no breakdown occurs.

All phase conductors to earth (lead and armour together) kV

Pass/Fail

Leakage Current

µA

5.B – PHASE-TO-PHASE TEST This test shall be performed exclusively using a positive and negative output hipot tester. Both the lead sheath and armour should be earthed for this test. Apply DC high voltage according to the cable-designated voltage for 15 minutes as per the above table (Section 5).

Paper-Insulated Belted Cables

(as per Western Power procedures DM#2074500v2 )

Connection Voltage Test Duration Start Leakage (mA) Finish Leakage (mA)

R + W + B to E 15 min

R to W + B + E 15 min

W to R + B + E 15 min

B to R + W + E 15 min

6. INSULATION RESISTANCE TEST (POST–HIPOT TEST)

Red to blue

Blue to white

White to red

kV

Pass/Fail

Pass/Fail

Pass/Fail

Leakage Current

µA

µA

µA

The commissioning officer must sign this document before energisation.


This test is to be carried out using a 5 kV insulation resistance tester between conductor to conductor and conductors to earth.



White to (red & blue) phase & earth/screen >200 MΩ MΩ


Bond all conductors and test between phases and earth >200 MΩ MΩ

7. CABLE TERMINATION CHECKS





Testing officer/cable jointer/CPM: ________________________________ NAC #: ______________________________

Signature: ______________________________________________ Date & time: ______________________________

DCWI




Commissioning officer: ________________________________________ NAC #: ______________________________

Signature: ______________________________________________ Date & time: ______________________________

1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager


DCWI


2.4 HV paper-insulated screened cable 2.4.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of HV paper-insulated screened cable.

2.4.2 Scope This instruction must be followed for all HV paper-insulated screened cable installations in Western Power’s SWIS distribution network. All HV paper-insulated cables, including cable joints and terminations, must be tested following installation, alteration or repair to confirm the insulation levels and integrity of the cable system.

2.4.3 References

AS/NZS 1026–2004: Electric Cables – Impregnated Paper Insulated – Working voltages up to 19/33 (36) kV.

DM# 2074388v2: Testing of High Voltage Paper Screened Cables.


The installer must affix permanent labels to all relevant network equipment such as transformers, switch fuse units and RMUs, stating the destination of all cables.




The tester officer is responsible for carrying out tests in accordance with this instruction and recording all test results and explanatory comments where relevant.




Resistor box

a single-output (DC negative) hipot tester for a test voltage of up to 60 kV

a positive/negative output DC hipot tester for a test voltage of up to 27 kV

Paper-insulated cables may be of belted or screened construction. There are many belted 6.6 kV and 11 kV cables in service and they will remain for a long time. All paper-insulated cables connected to system voltages greater than 11 kV are of screened construction. (Belted cables are not manufactured for system voltages greater than 11 kV.)

Test the cable:




DCWI


2.4.7 Test criteria

Faults mainly occur in these cables from core to earth because each core is continuously wrapped in metal foil (the screen). The only exception to this is at the cable terminations, where the foil is cut back. This creates a small risk of a core-to-core fault at this location.

HV paper-insulated screened cables must be subjected to the following tests:



2.4.7.2 Insulation resistance test The insulation resistance is tested using a 5 kV insulation resistance tester connected conductor to conductor and between conductors to sheath. Record the measured values.

Test the insulation resistance using a 5 kV insulation resistance tester between conductor to conductor and conductors to earth. Record the measured resistance (MΩ/GΩ). The insulation resistance test results should be for a period of 1 to 10 minutes (subject to the length of the cable) or until the reading is stable. Values greater than 200 MΩ are acceptable.

2.4.7.3 Hipot test A single-output (negative) tester must be used for all conductors to screen hipot tests. Conductors must be connected to the negative output.

In accordance with the cable-designated voltage or system voltage, whichever is the lesser, apply the recommended test DC voltage for 15 minutes R to W+B+E. The conductor screens and metallic cable sheath are earthed. The test is acceptable if no breakdown occurs.


kV

Test DC voltage applied for 15 minutes

between conductors and earth New cables kV Service-aged cables kV

6.35/11 25.0 20.0

12.7/22 50.0 40.0

19/33 75.0 60.0

Note: The test DC voltage is based on Table B3 of AS/NZS 1026 – 2004 with a derating factor of 0.8 for service-aged cables older than 3 years.









DCWI



2.4 – HIGH VOLTAGE PAPER-INSULATED SCREENED CABLE

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage paper-insulated screened cable. Note: The following tests must be carried out after installation, repair or jointing and before the cable is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.:________________ SPIDAWeb Pick ID:_____________ Test Site: ________________

Location of the cable (from): _______________________________________________________________

(to): _______________________________________________________________ 1. CABLE DESCRIPTION




Ring main switch


Cap test points

Cable





Ensure that the interlock is disengaged to access the cable/compartment for test purposes Confirm the cables are de-energised (with an approved testing device) before proceeding further.




Ensure the surge arresters are disconnected from the cable terminations (if applicable).




Red phase – screen MΩ MΩ








White (red & blue) phase & earth/screen >200 MΩ MΩ


Bond all conductors and test between phases and earth. >200 MΩ MΩ

DCWI


5. HIGH VOLTAGE (HIPOT) TEST Conduct a phase-to-sheath/earth test (with the screen, lead and armour together as per Western Power procedures (DM# 2074388v2)). This test can be performed using a single-output (negative) hipot tester or a positive and negative output hipot tester. Bond all phase conductors and connect to the negative output of the hipot test set. Apply DC HV according to the cable-designated voltage or system voltage, whichever is the lesser, for 15 minutes as per the table below. The test is acceptable only if no breakdown occurs.

Cable-designated or System Voltage (kV) New Cables (kV) Service-aged Cables (kV)

6.35/11.0 25.0 20.0

12.7/22.0 50.0 40.0

19.0/33.0 75.0 60.0

All phase conductors to earth (screen, lead and armour together) kV Pass/Fail

Leakage Current µA

Paper-Insulated Screened Cables (as per Western Power procedures)

Connection Voltage Test Duration Start Leakage (mA) Finish Leakage (mA) R to W + B + E 15 min W to R + B + E 15 min B to R + W + E 15 min

6. INSULATION RESISTANCE TEST (POST–HIPOT TEST)





White (red & blue) phase & earth/screen >200 MΩ MΩ


Bond all conductors and test between phases and earth. >200 MΩ MΩ

7. CABLE TERMINATION CHECKS



The commissioning officer must sign this document before energisation. 8. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1–7


Testing officer/cable jointer/CPM: _______________________________ NAC #: _____________________


DCWI








DCWI


2.5 LV XLPE cable 2.5.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of LV XLPE cable.

2.5.2 Scope This instruction is required to be followed for all XLPE-insulated LV cable installations in Western Power’s SWIS distribution network.

All LV cables, including cable joints and terminations (pillar, frames ), must be tested following installation, alteration, and repair or jointing to confirm the insulation levels and integrity of the cable system.

2.5.3 References AS/NZS 4961–2003: Electric Cables – Polymeric Insulated – For distribution and service applications.


The installer must affix permanent labels to all relevant network equipment such as transformers and switch fuse units, stating the destination of all cables.



The project manager or officer in charge must be responsible for the performance of testing in accordance with this instruction.

The testing officer must be responsible for carrying out tests in accordance with this instruction and recording all test results and additional comments where relevant.



a 1 kV insulation resistance tester.

Resistor box

Test the cable:




2.5.7 Test criteria Testing must be carried out on each identified circuit as follows:

After all cables are terminated and all MEN links and N-E connections are disconnected or open, test the end-to-end phasing, the insulation resistance and the sheath integrity.

The readings for each test must be recorded on the Low Voltage XLPE Cable Distribution Commissioning Work Instruction Form.

At the completion of each cable section and prior to the connection of any MEN links and N-E connections installations, test the insulation resistance of each conductor and the sheath integrity.



DCWI


2.5.7.2 Insulation resistance test Use a 1 kV insulation resistance tester (never use 5 kV insulation tester for this test) for 1 minute between conductor to conductor and conductor to neutral. Values greater than 10 MΩ for new cable and 1 MΩ for existing cables are acceptable. This test may not be practical for existing cables because of connected services. Test and record the insulation resistance values. Measured value of 10 MΩ or greater is acceptable at the point of handover of a clean circuit from the construction authority (cable installer) to the commissioning authority. If energisation does not follow immediately after commissioning prior to energisation (assuming that sufficient time has lapsed between the handover and the energisation period), the insulation resistance test must be repeated, and measured values of not less than 1 MΩ (to AS/NZS 3000 Rule 6.3.3.3.2) must be obtained.

2.5.7.3 Sheath integrity test With all earth leads MEN links/N-E connections disconnected, test the sheath integrity using an insulation resistance tester connected neutral screen (Nscr) to earth. For testing purposes, use an effective earthed reference point spaced more than 2 meters from any electrically conductive object embedded in the ground. Record the value. Measured values of 10 MΩ or greater for new cables and >1 MΩ for existing cables are acceptable.

This test confirms the integrity of the cable sheath. Damaged or punctured sheaths allow moisture to enter the cable. Use a 1 kV insulation resistance tester for 1 minute with all the neutral connections disconnected within the circuit of the cable being tested.

If the sheath integrity is <10 MΩ for new cable and <1 MΩ for existing cable, then notify the appropriate authorities for further testing or repair; otherwise proceed.

Note: Conduct a final insulation resistance test between all phases and the neutral/earth on all LV circuits before energising them for the first time. If energisation does not follow immediately after two weeks of the commissioning tests, conduct a final insulation resistance to ensure that the circuit is safe to be energised.









DCWI



2.5 – LOW VOLTAGE XLPE CABLE

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of low voltage cross-linked polyethylene (XLPE) cable. Note: The following tests must be carried out after installation, alteration, repair or jointing and before the cable is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.:_______________ SPIDAWeb Pick ID: _____________Test Site: _______________

Location of the cable (from): _____________________________________________________________

(to): _____________________________________________________________

1. CABLE DESCRIPTION

Size of the cable: mm² Length of the cable (approx): m Aluminium Copper


Check that the cable is installed correctly.

Confirm that the cable is de-energised (with an approved testing device) before proceeding further.



Disconnect the relevant MEN link and N-E connections for the cable under test.

3. END-TO-END AND PHASING TEST



Red phase – neutral MΩ MΩ

White phase – neutral MΩ MΩ

Blue phase – neutral MΩ MΩ


Use a 1 kV insulation resistance tester for 1 minute from conductor to conductor and from conductor to neutral (never use 5 kV insulation testers for this test). Values greater than 10 MΩ for new cables and 1 MΩ for existing cables are acceptable. This test may not be practical for existing cables because of connected services.

Test Connection Minimum Values Test Results

Red phase - white phase >10 MΩ/1 MΩ MΩ

White phase - blue phase >10 MΩ/1 MΩ MΩ

Blue phase - red phase >10 MΩ/1 MΩ MΩ

Red phase - neutral >10 MΩ/1 MΩ MΩ

White phase - neutral >10 MΩ/1 MΩ MΩ

Blue phase - neutral >10 MΩ/1 MΩ MΩ

DCWI


5. SHEATH INTEGRITY TEST: NEUTRAL-TO-EARTH TEST AT 1 KV

This test confirms the integrity of the cable sheath.

Damaged or punctured sheaths allow moisture to enter the cable.

Use a 1 kV insulation resistance tester for 1 minute with all the neutral connections disconnected within the circuit of the cable being tested.

If the sheath integrity is <10 MΩ for new cable or <1 MΩ for existing cable, report unsatisfactory results to the appropriate authorities for further testing or repair.

For testing purposes, use an effective earthed reference point spaced more than 2 meters from any electrically conductive object embedded in the ground.

_______ MΩ

6. REINSTATEMENT OF CONNECTIONS

Reinstate all connections which were disconnected as per item 2 above. YES NO

Note: If NO (Remarks/comments) _____________________________________________________________________________

If energisation does not immediately follow the commissioning tests, conduct a final insulation resistance test to ensure that the circuit is safe to be energised.


8. PHASE-OUT TEST

If the LV network is to be interconnected with another LV network, phase out at the normally open point; otherwise phase out as required; with phase out tester for energised. Otherwise, with resistor box for de-energised circuits.

9. HANDOVER OF RESPONSIBILITY Commissioning officer must ensure that all checks are completed and the test results comply with the minimum standards.


Testing officer/cable jointer/CPM: _______________________________ NAC #: _____________________

Signature: ____________________________________________________ Date: ______________________



Signature: ____________________________________________________ Date: ______________________



DCWI


2.6 LV cable with/without pillars 2.6.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of LV XLPE cable with or without pillars.

2.6.2 Scope This instruction must be followed for all LV cable installations in Western Power’s SWIS distribution network.

All LV cables, including cable joints and terminations (pillar, frames), must be tested following installation, alteration or repair (including under fault situations) to confirm the insulation levels and integrity of the cable system.

2.6.3 References None.


The installer must affix permanent labels to all relevant network equipment such as transformers and switch fuse units, stating the destination of all cables.



The project manager or officer in charge must be responsible for the performance of testing in accordance with this instruction.

The testing officer must be responsible for carrying out tests in accordance with this instruction and recording all test results and additional comments where relevant.



a 1 kV insulation resistance tester.

Resistor box

Test the cable:




2.6.7 Test criteria Testing must be carried out on each identified circuit as follows:

After all cables are terminated and all MEN links and N-E connections are disconnected/open, test the end-to-end phasing, the insulation resistance and the sheath integrity.

The readings for each test must be recorded on the Low Voltage Cable With/Without Pillars Distribution Commissioning Work Instruction Form.

At the completion of each cable section and prior to the connection of any MEN links and N-E connections installations, test the insulation resistance of each conductor and the sheath integrity.

DCWI




This test verifies the continuity of the circuit. If using Western Power equipment, connect the four-lead resistor boxes at the beginning of the cable.

Example: At the transformer’s LV connection point, between phases and neutral, carry out the testing using a 500 V insulation resistance tester at the pillars.

Correct resistance values should be measured between R-N, W-N, B-N, respectively. A value of more than 10 MΩ should be measured between N-E.

2.6.7.2 Insulation resistance test Use a 1 kV insulation resistance tester (never use 5 kV insulation tester for this test) for 1 minute between conductor to conductor and conductor to neutral. Values greater than 10 MΩ for new cable and 1 MΩ for existing cables are acceptable. This test may not be practical for existing cables because of connected services.

Ensure all persons are clear of the circuit before testing. Test and record the insulation resistance values measured using an insulation resistance tester. Measured value of 10 MΩ or greater is acceptable at the point of handover of a clean circuit from the construction authority (cable installer) to the commissioning authority.

If energisation does not follow immediately after commissioning prior to energisation (assuming that sufficient time has lapsed between the handover and the energisation period), the insulation resistance test must be repeated, and measured values of not less than 1 MΩ (to AS/NZS 3000 Rule 6.3.3.3.2) must be obtained.

2.6.7.3 Sheath integrity test With all MEN links and N-E connections disconnected, test the sheath integrity using an insulation resistance tester connected neutral screen (Nscr) to earth. For testing purposes, use an effective earthed reference point spaced more than 2 meters from any electrically conductive object embedded in the ground. Measure and record values. Measured values of 10 MΩ or greater for new cables and >1 MΩ for existing cables are acceptable. This test confirms the integrity of the cable sheath. Damaged or punctured sheaths allow moisture to enter the cable. Use a 1 kV insulation resistance tester for 1 minute with all the neutral connections disconnected within the circuit of the cable being tested.

If the sheath integrity is <10 MΩ for new cable and <1 MΩ for existing cable, notify appropriate authorities for further testing or repair; otherwise proceed.



2. All cables must be correctly connected, labelled, protected against mechanical damage, and saddled.

3. Feeder pillars, mini-pillars and LV connection points should be fitted with locks, where necessary. They must be checked for public security.

4. Phase out at the feeder pillars, mini-pillars and LV connection points, because cross-phasing is likely to occur at these points (see Switching Operators Manual 1).

5. Before energising a new LV cable, conduct an insulation resistance test to make sure that the cable is in sound condition.

Note: When conducting an insulation resistance test, remove customer meter fuses in order to obtain a correct reading. If this is not done, the voltage coil of the customer’s meter gives a false reading. Operators should earth out cores between tests and on completion of testing.

6. Each phase must be energised in turn from remote end and checked at each pillar for correct phasing. Otherwise, as phase out required

7. For any interconnection point, cables are identified by labels showing their first points of isolation from that source. Correct labelling is essential to identify the circuit. (Refer to figure 10-13 of Switching Operators Manual 1.)

Note: Phase out before closing the LV open point. (Refer to Switching Operators Manual 1.)

DCWI








DCWI


OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION 2.6 – LOW VOLTAGE CABLE WITH/WITHOUT PILLARS

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of low voltage cross-linked polyethylene (XLPE) cable with or without pillars. Note: The following tests must be carried out after installation, alteration, repair or jointing and before the cable is put into service. If the circuit contains more than nine pillars, another set of test sheets must be used.

Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Work Package No.: _____________________________ Test Site/Location:___________________________________

Description of equipment Actual quantity Quantity as per drawings

Working ends

Uni-pillars

Mini-pillars

1. LOCATION OF THE PILLARS (lot no. and road name)

A. F. B. G. C. H. D. I. E. J.

2. CABLE WITHOUT PILLARS (SINGLE RUN) – COLUMN X

Size of conductor: mm² Length of cable (approx): m

3. VISUAL INSPECTION AND SAFETY CHECK DESCRIPTION A B C D E F G H I J X

1 Confirm that the cable is de-energised (with an approved testing device) before proceeding.

2 Check that the pillars finished ground level is satisfactory. N/A

3 Check that all the cables and pillars are correctly installed and that there is no sign of damage.

4

Check that there are no loose connections or unconnected cables in any of the pillars. Ensure customer connections are disconnected.

N/A

5 Check that the neutral and phase conductor arrangement inside the pillars is correct.

6 Check that the neutral screens are all solidly and separately bolted to the neutral bar/block.

7

Check that all the cables are correctly connected in accordance with the design drawings and protected against mechanical damage.

8 Check that the labelling is correct as per the standard.

DCWI


9

Normally open point (NOP).

Cables are identified by labels that show their first points of isolation from that source.

Check the labelling to identify the correct circuit in all pillars

Ensure that red reflective labels are placed on the outside of the uni-pillars.

A B C D E F G H I J X

NOP 1

NOP 2 N/A

NOP 3 N/A

10 Check that no cables are exposed and backfill if required.

11

Check that the final positions of the top and bottom busbars of the universal pillars are correctly aligned to accept fuses or links.

12 Disconnect the neutral of the cable under test from MEN and N–E connections.

4. CONTINUITY AND PHASING TEST This test verifies the continuity of the circuit. If using Western Power equipment, connect the four-lead resistor box at the beginning of the cable. Example: At the transformer’s low voltage connection point, between phases and neutral, carry out the test using a 500 V insulation resistance tester at the pillars. Correct resistance values should be measured between R-N, W-N, and B-N, respectively. A value of more than 10 MΩ should be measured between N-E.

(Ensure all the MEN link and N-E connections at the uni-pillars, mini-pillars and low voltage connection points are disconnected for this test.)

Resistor box values (MΩ): Red phase White phase Blue phase

DESCRIPTION A B C D E F G H I J

Red - neutral MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

White - neutral MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

Blue - neutral MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

DCWI


5. INSULATION RESISTANCE TEST (DISCONNECT THE RESISTOR BOX IN PREPARATION FOR INSULATION RESISTANCE TEST)

Note: If an NOP is in the circuit, relocate the resistor box. This test is to be carried out using a 1 kV (never use 5 kV insulation testers for this test) between phase to phase, phase to neutral, and neutral to earth for 1 minute. Values greater than 10 MΩ for new cables and 1 MΩ for existing cables are acceptable. Ensure that all persons are clear of the circuit before testing.


Red - white MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

White - blue MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

Blue - red MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

Red - neutral MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

White - neutral MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

Blue - neutral MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

6. SHEATH INTEGRITY TEST: NEUTRAL-TO-EARTH TEST AT 1 KV This test confirms the integrity of the cable sheath. Damaged or punctured sheaths allow moisture to enter the cable. Use a 1 kV insulation resistance tester for 1 minute with all the neutral connections disconnected within the circuit of the cable being tested.

If the sheath integrity is <10 MΩ for new cables or <1 MΩ for existing cables, report unsatisfactory results to the appropriate authorities for further testing or repair; otherwise proceed.

DESCRIPTION A B C D E F G H I J X

Neutral - earth MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ MΩ

7. REINSTATEMENT OF ALL MEN LINKS AND N-E CONNECTIONS AND INSULATION RESISTANCE TEST BETWEEN PHASES AND NEUTRAL

Reinstate all connections which were disconnected as per item 4 above. Yes No

Note: A final insulation resistance test must be performed between all phases and neutral/earth on all low voltage circuits before energising for the first time. If energisation occurs more than two weeks after this commissioning test, conduct a final insulation resistance test to ensure the cable is safe to energise. 8. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1–7


Testing officer/cable jointer/CPM: ______________________________________ NAC #: ________________________

Signature: ____________________________________________________ Date & time: ________________________ 9. ENERGISATION

Energisation of the overhead LV network

Ensure that all persons and equipment are clear of the circuit and all pillars and units are secured.

Ensure that all short-circuiting equipment has been removed. Check that the LV fuses are correct (if applicable).

Energise the circuit in accordance with the low voltage switching program and record the switching program number: ____________


Phase out at the feeder pillars, mini-pillars and LV connection points, because cross-phasing is likely to occur at these points.

Red – red V Acceptable results

(0–10 V) White – white V

Blue – blue V

DCWI


10. HANDOVER OF RESPONSIBILITY The commissioning officer must ensure that checks are completed and test results comply with the minimum standards.



Signature: _________________________________________________________ Date: ________________________



DCWI


2.7 Steel standard streetlights 2.7.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of steel standard streetlights and/or cut-out assemblies. The testing ensures that cables are installed correctly and that the steel standards do not become energised.

2.7.2 Scope This instruction must be followed for all steel standard streetlights to be connected to Western Power’s SWIS distribution network.

2.7.3 References Australian Standard AS/NZS 3000–2007: Electrical Installations (known as the Australian/New Zealand Wiring Rules).

AS 60038 - 2012 Standard voltages

2.7.4 Equipment pre-handover status Steel standard streetlights must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.


1. Check and comprehend the handover certificate.

2. Record the address, work package number, instrument serial number and instrument calibration date.

3. Verify that all equipment has been installed correctly and is suitable for service.

4. Check that there are no cables exposed to the public, and backfill if required.


2.7.6 Test criteria

2.7.6.1 Insulation resistance test

For Class I streetlight installations, use a 1 kV insulation resistance tester (never use 5 kV insulation tester for this test) for 1 minute between phase to earth, phase to neutral, and neutral to earth.

Values greater than 10 MΩ for new cable and 1 MΩ for existing cables are acceptable.

(Double insulated streetlight installations do not have a MEN connection.)

2.7.6.2 Polarity test

Use a voltmeter between active to line neutral, active to independent earth, and line neutral to independent earth.

For testing purposes, use an effective earthed reference point spaced a minimum of 2 meters from any electrically conductive object in the ground.

Active to Line Neutral test values must be between 216–253 V.

Active to independent earth test values must be 216–253 V.

Line neutral to independent earth test values must be 0–6 V.

2.7.7 Commissioning of the equipment 1. All cables must be correctly connected, labelled, protected against mechanical damage, and saddled.

2. Feeder pillars, mini-pillars and LV connection points should be fitted with locks, where necessary, and checked for public security.

Note: If energisation occurs more than two weeks after these commissioning tests, conduct a final insulation resistance test to ensure the cable is safe to energise.

DCWI







DCWI



2.7 – STEEL STANDARD STREETLIGHTS

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of steel standard streetlights and/or cut-out assemblies. The testing ensures that cables are installed correctly and that the steel standards do not become energised. Note: The following tests must be carried out after installation and before the streetlights are put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.:______________________ Test Site/Location:________________________

Instrument Serial No.:____________________ Date:_____/______/ 20___

Instrument Calibration Date:_____/_____/ 20_____

1. LOCATION OF STREETLIGHTS (lot no. and road name)

A. F.

B. G.

C. H.

D. I.

E. J.

Streetlights supplied from:

Ensure no person makes contact with the steel standard streetlight or the temporary earth electrode while the testing procedures are being undertaken.



1 Ensure the point of supply has been isolated and tagged. Yes No

2 Install an independent earth more than 2 metres from the steel standard. Ensure there are no underground services where the independent earth is to be located.

3

Before removing the metal inspection cover, test between the steel standard and an independent earth to confirm that no hazardous voltage exists. If a voltage greater than 6 V is recorded on the test instrument, cease testing, investigate the source of the voltage or report this to your supervisor. Proceed if the voltage recorded is less than 6 V.

V V V V V V V V V V

4

Check that the streetlight is correctly installed as per the works package requirements, Distribution Construction Standards Handbook HB01 and applicable design drawings, and that there are no signs of damage.

5

Check that there are no loose connections or unconnected cables in the streetlight standards. (Double insulated streetlight installations do not have a MEN connection.)

DCWI




1 Remove the cut-out which isolates the light from the line phase and line neutral.

2 Check that all the cables and streetlight standards are correctly installed as per the work package and that there are no signs of damage.

3 Check that there are no loose connections or unconnected cables in the streetlight standards.

4 Disconnect the MEN links and N-E connections on each Class I streetlight standard where applicable. (Double insulated streetlight installations do not have a MEN connection.)

5 Use a 1 kV insulation resistance tester for 1 minute at the point of supply between phase to neutral, phase to earth, and neutral to earth.

Phase to neutral Phase to earth Neutral to earth

MΩ MΩ MΩ

If a reading is unacceptable, cease testing, investigate the problem or report this to your supervisor. Values greater than 10 MΩ for new cables and 1 MΩ for existing cables are acceptable. Ensure that all persons are clear of the circuit before testing. Note: If energisation occurs more than two weeks after these commissioning tests, conduct a final insulation resistance test to ensure the cable is safe to energise. 4. REINSTATEMENT OF ALL MEN LINKS AND N-E CONNECTIONS


1 Reinstate all the MEN links and N-E connections which were disconnected as per item 3.4. (Double insulated streetlight installations do not have a MEN connection.)



Commissioning Officer:______________________________________________ NAC #: ________________________

Signature: ____________________________________________________ Date & time: ________________________

6. POLARITY TEST (USING A VOLTMETER) DESCRIPTION A B C D E F G H I J

1 Ensure the cut-outs which isolate the lights from the line phase and line neutral are removed.

2 If there is a loop-in loop-out, remove the loop-out phase and neutral from the cut-out, links or red spot fuse terminals and separate.

3 Ensure all streetlight standards are safe to energise and that each standard is safe for other workers and members of the public.

4 Energise the streetlight supply cable at the point of supply.

5 For testing purposes, use an effective earthed reference point spaced more than 2 meters from any electrically conductive object embedded in the ground.

6

Using a voltmeter test between the • line active and line neutral • line active to independent earth • line neutral and independent earth.

U1 – Un 216 V – 253 V V V V V V V V V V V

U1 – PE 216 V – 253 V V V V V V V V V V V

Un – PE 0 V – 6 V V V V V V V V V V V

7

Reinstate the MEN and N -E at each Class I streetlight standard after testing has been completed satisfactorily and ensure everything is secure and safe from third party access. (Double insulated streetlight installations do not have a MEN connection.)

8 If there is a loop-in loop-out, safely reconnect the active and neutral in order to carry out the testing of the next streetlight standard.

9 Insert a fuse into the cover of the cut-out or red spot fuse (or

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similar) and reinstall.

10

Test between the steel standard and an independent earth to confirm that no hazardous voltage exists. If a voltage greater than 6 V is recorded on the test instrument, cease testing, investigate the source of the voltage or report this to your supervisor.

V V V V V V V V V V







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2.8 SPUDS single-phase to three-phase pillar 2.8.1 Purpose This instruction covers the testing and commissioning of a SPUDS single-phase pillar that has been converted to a standard three-phase pillar.

2.8.2 Scope This instruction is required to be followed for all SPUDS single-phase to three-phase pillars which are to be connected to Western Power’s SWIS distribution network.

References: AS 60038 - 2012 Standard voltages

2.8.3 Equipment pre-handover status The converted three-phase pillar must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.

2.8.4 Pre-commissioning checks The following checklist must be completed prior to any commissioning activities: 1. Check the handover certificate. 2. Record the address, work package number and location of the pillar. 3. Ensure the point of supply has been isolated and tagged. 4. Check that the streetlight is correctly installed as per the works package requirements and Distribution

Construction Standards Handbook HB01 and that there are no signs of damage. 5. Compare the existing outgoing service connection with the required service connection in the work package. 6. Ensure that the work conforms to the work package in preparation for any load balancing that may be required.


2.8.5 Test criteria

2.8.5.1 Insulation resistance test Use a 1 kV insulation resistance tester (never use 5 kV insulation tester for this test) for 1 minute between phase to earth, phase to neutral, and neutral to earth.

Values greater than 10 MΩ for new cable and 1 MΩ for existing cables are acceptable.

2.8.5.2 Phasing Use a voltmeter to measure the voltage across the incoming supply terminals at the mini-pillar. Expected values between phases should be 376–440 V; phase to neutral should be 216–253 V.

Phase out at the feeder pillars, mini-pillars and LV connection points because cross-phasing is likely to occur at these points (see Switching Operators manuals).

Conduct a service connection test for each connection and provide a Service Connection Test Form.


2.8.6 Commissioning of the equipment 1. Carry out the commissioning in accordance with the Switching Operators manuals and the switching program. 2. In accordance with section 3.8 of the WA Electrical Requirements, label all underground mains of consumers at

the point of supply. 3. Ensure the work area is left tidy with no hazards to the public. 4. Hand over responsibility to the operating authority. 5. Return the relevant form to the project file as a record of the commissioning/handover certificate. 6. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the



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OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION 2.8 – SPUDS SINGLE-PHASE TO THREE-PHASE PILLAR

Purpose: This instruction covers the testing and commissioning of a SPUDS single-phase pillar that has been converted to a standard three-phase pillar. Note 1: The following tests must be carried out at the time of conversion. If the circuit contains more than 10 pillars, use another set of test sheets. Note 2: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Work Package No.:____________________ Test Site/Location: ________________________________

1. LOCATION OF PILLARS (lot no. and road name)

A. F. B. G. C. H. D. I. E. J.


Description A B C D E F G H I J

1 Check that the construction complies with the distribution construction standards and applicable design drawings.

2

Ensure ALL the customers associated with the changeover have been identified and their supplies isolated. (Check that the meter has stopped recording.)

3 Separate the customers’ load neutral from the meter and use the “Do Not Operate Danger” tag on the meter box to indicate that work is being undertaken.

4 At the point of supply isolate the single-phase cable and ensure all bridged conductors are removed. Yes Yes

5 Remove ALL the customers’ connections from the pillars and ensure that they are positively identified. See note 1 below.

6 Remove all the bridging links from the pillars: red to white and blue to neutral.

7 At the point of supply, undertake the cable reconfiguration to three phases as per the work package requirements.

Yes Yes


Use a 1 kV insulation resistance tester for 1 minute at the point of supply between phase to neutral, phase to earth, and neutral to earth.

Phase to neutral Phase to earth Neutral to earth

MΩ MΩ MΩ

4 ENERGISATION

1

Ensure that all persons and equipment are clear of the circuit and all pillars and units are secured. Energise the circuit in accordance with the LV switching program.

Yes Yes

2

Check the phasing and measure the voltage at each pillar with a voltmeter.

Phasing

Red – white

376 V – 440 V

V V V V V V V V V V

White – blue V V V V V V V V V V

Blue – red V V V V V V V V V V

Red – neutral

216 V – 253 V

V V V V V V V V V V

White –neutral V V V V V V V V V V

Blue – neutral V V V V V V V V V V

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3

Reconnect the customers’ installations in accordance with the work package phasing requirements and complete the Service Connection Test Form for each connection. Treat all as new connections.

5. PHASE-OUT TEST

Phase out at the feeder pillars, mini-pillars and LV connection points, because cross-phasing is likely to occur at these points.

Red – red V Acceptable results

(0–10V) White – white V

Blue – blue V



Commissioning officer: ______________________________________________ NAC #: ____________


Note 1: In accordance with section 3.8 of the WA Electrical Requirements, label all underground mains of consumers at the point of supply.



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2.9 Pole to pillar 2.9.1 Purpose This instruction outlines how to commission a low voltage (LV) pole to pillar cable.

2.9.2 Scope This instruction covers the testing and commissioning of all replacements or new installations of LV cable, from the pole of an existing overhead distribution system to a pillar in the Western Power distribution network.

References: AS 60038—2012 Standard voltages

2.9.3 Responsible persons The project manager or commissioning officer is responsible for ensuring that testing is carried out in accordance with this instruction.

The commissioning officer is responsible for carrying out the tests listed in this instruction, recording all test results and additional comments where relevant.

2.9.4 Equipment pre-handover status Pole to pillar must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 – Part 1 General and all applicable design drawings.

2.9.5 Pre-commissioning checks The following checklist must be completed prior to any commissioning activities: 1. Check all electrical connections at the pillar are completed and tight. 2. Check the correct alignment of the service cable and conduit to the pole. 3. Record the address, work package number and location of the pillar. 4. Make sure the work conforms to the work package in preparation for any load balancing that may be required.

2.9.6 Tests 1. Insulation resistance test.

2. Voltages test.

3. Sheath test.

4. Polarity test.

5. Phase rotation test.

2.9.7 Commissioning of the equipment The commissioning officer must sign off on the testing schedule and include their name and NAC number.

2.9.8 Handover of responsibility 1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return the relevant form to the project file as a record of the commissioning/handover certificate. 4. After the onsite project officer signs off on the DCWI, send a scanned copy to the relevant manager:

• the construction manager (for work performed by Western Power employees) or • the service manager (for contractors).

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2.9 – POLE TO PILLAR

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of low voltage cable from the pole of an existing overhead distribution system to a pillar. Note: The following tests must be carried out after the cable and pillar have been installed. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.:____________________ Test Site/Location: _____________________________

1. SERVICE ADDRESS (house or lot no. and road name)

2. CABLE

Size of conductor mm² Length of cable (approximately) m

Pillar size Mini Uni Work Package No.

3. PREPARATION

1 Check pillar on the right alignment. Refer to drawings U8, U9, and U19/3 of Distribution Construction Standards Handbook HB01.

2 Check all connections at the service pillar and check for tightness. 3 Separate the earth conductor from the neutral terminal block at the pillar. 4 Check the service cable and conduit to the pole in its final position. 5 Separate the service cable cores at the pole-top for testing.

6

At the pillar, conduct an insulation test on the service cable and record the results.

Use a 1kV insulation resistance tester for one minute between phase-to-phase and phase-to-neutral.

Values must be greater than 10MΩ.

Ensure that all persons are clear of the circuit before testing.

Red – white MΩ

White – blue MΩ

Blue– red MΩ

Red – neutral MΩ

White – neutral MΩ

Blue – neutral MΩ

7

Perform a sheath integrity test on the service cable and record the results.

a. Disconnect all neutral/screen connections of the cable that is to be tested. b. Use a 1kV insulation resistance tester and test for one minute between all the

neutrals/screens and an effective earthed reference point (i.e. rod) embedded in the ground more than 2m from any electrically conductive object.

Values must be: • greater than 10MΩ for new cables • greater than 1MΩ for old cables

c. Reconnect all the neutral/screen connections.

Neutral – earth MΩ

4. COMMISSIONING Note: A high impedance voltmeter may give a high voltage reading on an unconnected phase when one phase is energised. If voltage above 6V exists on items 3, 6, 7, 10 and 13, stop immediately and commence a fault-finding procedure.

1 Prove the test equipment (voltmeter) is functioning correctly.

2 Identify neutral and fit a neutral tag (HG 2101) to the aerial mains neutral conductor and the service cable neutral conductor.

3 Test between the aerial mains neutral conductor and the service cable neutral conductor. Value < 6V Volts

4 Connect the service cable neutral conductor to the aerial mains neutral conductor and check for tightness. 5 Conduct a service connection test on all installations where the service connections have been disturbed. 6 Test between the pillar earth electrode and the neutral terminal block at the pillar. Value < 6V Volts

7 Test between the neutral terminal block at the pillar to the red, white and blue terminals block at the pillar. Value < 6V Volts

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8 Connect the blue-phase service conductor to the blue-phase aerial mains conductor and check for tightness.

9 Test between the pillar earth electrode and the blue terminal block at the pillar. Value 216–253V Volts

10 Test between the neutral terminal block at the pillar to the red and white terminal block at the pillar. Value < 6.0V Volts

11 Connect the white-phase service conductor to the white-phase aerial mains conductor and check for tightness.

12 Test between the pillar earth electrode and the white terminal block at the pillar. Value 216–253V Volts

13 Test between the neutral terminal block at the pillar to the red terminal block at the pillar. Value < 6.0V Volts

14 Connect the red-phase service conductor to the red-phase aerial mains conductor and check for tightness.

15 Test between the pillar earth electrode and the red terminal block at the pillar. Value 216–253V Volts

16 Reconnect the earth conductor to the neutral terminal block at the pillar and check for tightness.

17 Test between the neutral terminal at the pillar and the following:

Red terminal at the pillar Value 216–253V Volts White terminal at the pillar Value 216–253V Volts Blue terminal at the pillar Value 216–253V Volts

18 Test between the red, white and blue terminals at the pillar.

Red to white terminal at the pillar Value 376–440V Volts White to blue terminal at the pillar Value 376–440V Volts Blue to red terminal at the pillar Value 376–440V Volts

19 Conduct a phase sequence test to prove correct phase rotation. Ǿ # Ǿ # Ǿ #



Commissioning officer: ______________________________________________ NAC#: _________________________


1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager:

• the construction manager (for work performed by Western Power employees) or • the service manager (for contractors).

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Section 3 – Distribution transformers The intention of this section is to provide details of commissioning requirements for distribution transformers. This section currently contains details of:

1. Modular package substation (MPS) transformer

2. Non-MPS transformer

3. Single-phase transformer (pole-mounted/pad-mounted)

4. Three-phase pole-mounted transformer

5. Single-wire earth return (SWER) isolation transformer (pole-mounted)

6. SWER isolation transformer (ground-mounted).

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3.1 MPS distribution transformer 3.1.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of MPS distribution transformers up to 750 kVA before energisation. The testing should verify that the equipment:

has not been damaged in transit

has been installed in the network correctly

operates to specification and is suitable for service.

Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual, the Switching Operators manuals and the switchgear manufacturer’s operating and commissioning manual and AS 60038 - 2012 Standard voltages.

3.1.2 Decommissioning checks Decommissioning checks must be completed on existing transformers before they are replaced. These checks are essential for ensuring that the connections on the new transformer are the same as the previous transformer.

3.1.3 Equipment pre-handover status

3.1.3.1 Distribution transformers Distribution transformers must be installed in accordance with the appropriate guidelines in the Underground Distribution Systems Policy and Installation Manual and applicable design drawings.

On completion, the installer must issue an earth testing schedule and handover certificate to the project manager.

3.1.3.2 Underground cables 1. The cable links between the HV ring main switchgear, the transformer and the LV switchgear must be installed,

terminated and jointed in accordance with the appropriate standards and guidelines as documented in the Underground Distribution Systems Policy and Installations Options Manual.

2. As minimum, the installer must affix temporary labels to all relevant network equipment such as transformers and switch fuse units, stating the destinations of all cables.

3. On completion, the installer must issue HV and LV cable testing schedules and a handover certificate to the operating authority.

3.1.4 Pre-commissioning checks The following checklist must be completed prior to commencement of any commissioning activities:

1. Verify (on site) that the equipment has been installed correctly and is suitable for service.

2. Check that the transformer tap is at the position as per network planning or the previously installed transformer.

3. Check the transformer handover certificate.

4. Check the cable handover certificate.

Note: In most cases, a combined handover certificate is issued for the transformer and cables.

5. If the cable is to be laid by the customer, then before responsibility is handed over to Western Power for the jointing conduct a pre-acceptance test (insulation resistance test) to determine the state of the cable.

6. Check that the earthing grid is installed as required in the Distribution Substation Manual.

7. Check all earthing connections to the transformer.

8. Check the earthing testing schedule. (Refer to the earth resistance testing.)

9. Check the HV and LV cable testing schedule.

10. Check that the SPIDAWeb pick ID numbers for each item are in accordance with the as-constructed drawings.

11. Check and record the address/pole number and work package number.

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12. Check the integrity of the transformer tank and assembly for oil leaks.

13. Check new MPS transformer installations, to make sure that all phase and earth/neutral connections are securely bolted.

14. For MPS transformer changeovers that occur, once the new transformer is installed and while the kiosk is still removed visually and physically check that all phase connections have been reconnected to the correct bushings. Once a team member has completed this step, a second team member must complete this step again to confirm connections.




3.1.5 Test criteria

3.1.5.1 Insulation resistance test Use a 2.5 kV for HV and 1 kV for LV insulation resistance tester for 1 minute to test the insulation resistance on the transformer winding and the LV board busbar.

The insulation resistance values are acceptable if greater than 1 GΩ at 2.5 kV for HV winding and greater than 100 MΩ at 1 kV for LV winding.


3.1.5.2 Phase-out test A phase-out test is conducted under NOCC switching schedules on points of the LV network where the potential of the energised transformer can be matched with the potential of another energised transformer. This test is conducted to ensure interconnections of transformers are made or can be made for operational purposes.

If the LV conductors are energised from an interconnected transformer, conduct a phase-out test at the new transformer’s LV disconnector or fuse box.

If the LV conductors are not energised and for sole use, conduct the phase-out as required

3.1.6 Commissioning of the equipment 1. Prepare a commissioning program to energise the equipment in accordance with Switching Operators

Manual 1 and the switching program.

2. Conduct insulation and phasing tests and record the results.

3. Verify that the temporary cable destination and transformer labels are correct.

4. Carry out the commissioning program as per the switching program number.

5. Measure the no-load secondary voltage of the transformer to ensure that it meets the statutory voltage requirements at the supply side of the LV disconnector.

6. Check that the phase rotation and synchronisation are correct.

Note: The commissioning program for the transformer may be incorporated into the commissioning program for the ring main switchgear.

7. Check and record the final no-load voltage on each phase of the LV of the transformer.

8. Check and record the load voltage on each phase of the LV of the transformer.

9. Connect the load as per the switching program.

10. Measure the secondary voltage with load.

11. Check and record the final tap position of the transformer.

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12. Replace the temporary cable destination and transformer labels with permanent labels on the transformer as detailed in Distribution Equipment Labelling – Network Standard NS 05-2000.






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3.1 – MPS DISTRIBUTION TRANSFORMER Purpose: This instruction covers the testing and commissioning of all replacements or new installations of modular package substation (MPS) pad-mounted transformers up to 750 kVA before energisation. Note: The following tests and checks must be carried out after installation and before the transformer is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: _______________________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: ____________________________

1. INSULATION RESISTANCE TEST a) Ensure that the earth resistance has been tested and is acceptable. b) Ensure all electrical connections have been disconnected, including MEN/N-E connections. c) Measure the insulation resistance test results after 1 minute of testing.

Test Connection Test Voltage Resistance Expected Values Insulation resistance test on the transformer winding (Short circuit all winding terminals of the source of the same voltage level together.)

Primary/high voltage (HV) to tank 2.5 kV _______ Ω >1 GΩ

Primary/HV to secondary/LV 1 kV _______ Ω >100 MΩ

Secondary/LV to tank 1 kV _______ Ω >100 MΩ

Insulation resistance test on the low voltage (LV) board busbar (LV fuse ways open, including the transformer LV disconnector)

Red to white phase 1 kV _______ Ω >100 MΩ

White to blue phase 1 kV _______ Ω >100 MΩ

Blue to red phase 1 kV _______ Ω >100 MΩ

Red phase to earth 1 kV _______ Ω >100 MΩ

White phase to earth 1 kV _______ Ω >100 MΩ

Blue phase to earth 1 kV _______ Ω >100 MΩ


Inspect the following: • rating plate • tank and bushings • tap setting • oil level • HV terminations • LV terminations • neutral connection • MEN/N-E

connections

Transformer installed as per construction standards and applicable design drawings.

Transformer matches system voltage.

Transformer tap is at the position as per network planning. Transformer oil level satisfactory (if visible). Transformer bushings and tank in good condition (no oil leaks). HV cables properly terminated and connected. The dead end plugs are correctly installed (transformers with 2 sets of HV bushings). LV cables properly terminated and connected. Neutral connected and earthed and MEN/N -E link connected. All SPIDAWeb labels fitted and numbered correctly as per SPIDAWeb sheet.

LV lead connections to the transformer LV bushings are correct as per construction standards (as per manufactures for new connection) or as per markings in item 3.1.4.14 of the decommissioning sheet (for replacement transformers).

3. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1 & 2

I hereby certify that items 1 and 2 have been completed with satisfactory results and transfer control to the network operating authority.

Commissioning Officer : __________________________________ NAC #: ________________________________

Signature: _____________________________________________ Date & time: _________________________________

Primary

SecondarywindingA

B C

a b

c

winding

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4. ENERGISATION OF TRANSFORMER WITHOUT LOAD

Energisation of a transformer without load (LV fuse ways open, including the transformer LV disconnector)

Check that the HV fuses are correct.

Energise transformer as per the switching program (and check for abnormal noise).

Measured secondary voltages phase to neutral within acceptable range (216–253 V): R – N _______ volts, W – N _______ volts, B – N _______ volts.

Measured secondary voltage between phases within acceptable range (376–440 V): R – W _______ volts, W – B _______ volts, B – R _______ volts.

Phase rotation test result: _______________ Phase rotation test (123 or ABC or RWB)

5. PHASE-OUT TEST

Conduct a phase-out test on open points of the LV network where the LV supply is coming from another transformer.

Conduct the phase-out test under NOCC switching schedules on points of the LV network where the potential of the energised transformer can be matched with the potential of another energised transformer. This test ensures interconnections of transformers are made or can be made for operational purposes. • If the LV conductors are energised from an interconnected transformer, conduct the phase-out

test at the new transformer’s LV disconnector or fuse box. • If the LV conductors are not energised, proceed to item 6 (ENERGISATION OF

TRANSFORMER WITH LOAD) and conduct the phase-out test on normally open points where it can be interconnected from another transformer.

6. ENERGISATION OF TRANSFORMER WITH LOAD

Energisation of a transformer with load (close the LV disconnector before closing the fuse ways)

Close the LV disconnector.

Check that the LV fuse switches are correct and energise the LV circuits as per the switching program.

Ensure that the measured secondary voltage for phase to neutral is within an acceptable range (216–253 V): R – N _______ V, W – N _______ V, B – N _______ V.

Ensure that the measured secondary voltage between phases is within an acceptable range (376–440 V): R – W _______ V, W – B _______ V, B – R _______ V.




Commissioning officer: ___________________________________ NAC #: ________________________________




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OBSERVE SAFETY LIFESAVERS DISTRIBUTION DECOMMISSIONING WORK INSTRUCTION

3.1 – MPS DISTRIBUTION TRANSFORMER

Purpose: This instruction covers the decommissioning of all energised existing three-phase modular package substation (MPS) distribution transformers up to 750 kVA. Note: The following tests and checks must be carried out when removing existing three-phase MPS distribution transformers or before they are replaced.

Address/Pole No.: _________________________________________________________

Work Package No.:___________________ SPIDAWeb Pick ID: _____________________

2. DECOMMISSIONING OF AN EXISTING TRANSFORMER

Check the following to decommission an existing transformer.

Before de-energising the existing transformer, conduct a phase rotation test on the LV side of the transformer and record results below (if applicable):

Phase rotation test result: __________________.

The phase rotation test result must be 123/ABC/RWB.

If phasing is identified as being transposed during this test and there is no phase marking or phase transposition marking on the high voltage and secondary cable terminals, attach a caution label warning tag to inform the next person of the transposed phase position.

De-energise the transformer high voltage and low voltage as per the switching program. Record the switching program number: _______________________________________

Confirm that the transformer has been de-energised, install program earths, and issue permit.

3. HANDOVER OF RESPONSIBILITY TO THE TRANSFORMER REPLACEMENT TEAM LEADER

I hereby certify that item 1 has been completed with the above results in accordance with NOCC instructions and transfer control to the person in charge of replacing the transformer.

Name: ____________________________________________________ NAC #: _____________________


4. PRE-REMOVAL CHECKS

Before removing an existing transformer, check the following:

Before disconnecting the low voltage leads, check for any phase marking or phase transposition marking or caution label on the high voltage and secondary cable terminals. Verify by tracing the low voltage leads on the transformers, identify the phase colours on the existing transformer and mark or tag each lead with coloured tape.

Check the tap setting of the existing transformer and record results below: Tap switch position: ______.

5. HANDOVER OF RESPONSIBILITY TO THE COMMISSIONING OFFICER

I hereby certify that item 3 has been completed with the above results and transfer control to the commissioning officer.

Team Leader:_______________________________________________ NAC #: _____________________


Primary

SecondarywindingA

B C

a b

c

winding

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3.2 Non-MPS distribution transformer 3.2.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of non-MPS distribution transformers up to 1,000 kVA before energisation. The testing should verify that the equipment:




Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual, Switching Operators Manual 1 and the switchgear manufacturer’s operating and commissioning manual and AS 60038 - 2012 Standard voltages.

3.2.2 Decommissioning checks Complete the decommissioning checks on existing transformers before replacing them. These checks are essential for ensuring that the connections on the new transformer are the same as those on the previous transformer.







3. Insulation and phasing tests must be carried out and the results recorded.



1. Go to the site and verify that the equipment has been installed correctly and is suitable for service.


3. Check and comprehend the transformer handover certificate.

4. Check and comprehend the cable handover certificate.

Note: In most cases a combined handover certificate is issued for the transformer and cables.





8. Check the earthing testing schedule. (Defer to the earth resistance testing.)

9. Check the HV and LV cable testing schedule.


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12. Check the integrity of the transformer tank and assembly for oil leaks.

13. For new non-MPS transformer installations, visually check that all phase and earth/neutral connections are securely bolted.

14. For non-MPS transformer changeovers that occur, once the new transformer is installed and while the kiosk is still removed, visually and physically check that all phase connections have been reconnected to the correct bushings. Once a team member has completed this step, a second team member must complete this step again to confirm connections.


16. Check that unused bushings are fitted with proper bushing inserts and are correctly capped.

Note: Do not confuse with caps fitted from factory since these are not rated.

17. Check that drain wires are connected to all HV elbow connectors and connected to the cable screen. This ensures the elbows are safe to touch.

18. Check that the HV screens are all solidly and separately bolted to the HV earth bar.

19. Check that all elbow connectors are fitted with correct bailing assemblies and are secure.

20. Check that the neutrals are reconnected and that earth and the MEN/N-E connections are reconnected.

21. If the transformer is for the sole use of a single customer and has multiple LV single-core cables on each phase, check that none of the cores have been inadvertently crossed between phases; otherwise a short circuit of the transformer occurs when the equipment is energised.

22. Check that there are no cables exposed to the public, and backfill if required.

23. Check the site for erosion around the transformer. If so, then backfill with blue metal or crushed limestone.

24. Open all LV fuse ways, including the transformer disconnector.

25. Check that all LV neutral connections are connected to the LV neutral bar, not the earth bar.

26. Check that the transformer is set to the correct HV tap setting.

3.2.5 Test criteria

3.2.5.1 Insulation resistance test Use a 2.5 kV and 1 kV insulation resistance tester for 1 minute to test the insulation resistance on the transformer winding.



If the LV conductors are energised from an interconnected transformer, conduct the phase-out test at the new transformer’s LV disconnector or fuse box.

If the LV conductors are not energised and for sole use, conduct the phase-out as required



2. Verify that the temporary cable destination and transformer labels are correct.

3. Carry out the commissioning program as per the switching program number.

4. Measure the no-load secondary voltage of the transformer to ensure that it meets the statutory voltage requirements.

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5. Check that the phase sequence and synchronisation are correct.

Note: The commissioning program for the transformer may be incorporated into the commissioning program for the HV ring main switchgear.

6. Check and record the final no-load voltage on each phase of the LV of the transformer.

7. Check and record the load voltage on each phase of the LV of the transformer. 8. Check and record the final tap position of the transformer. 9. Connect the load as per the switching program and ensure that the transformer is not interconnected with any

other downstream. 10. Replace the temporary cable destination and transformer labels with permanent labels on the transformer as

detailed in Distribution Equipment Labelling – Network Standard NS 05-2000. 11. Conduct a service connection test on all installations where the service connections have been disturbed. 12. Ensure the work area is left tidy with no hazards to the public. 13. Hand over responsibility to the operating authority. 14. Return the relevant form to the project file as a record of the commissioning/handover certificate. 15. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the


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3.2 – NON-MPS DISTRIBUTION TRANSFORMER

Purpose: This instruction covers the testing and commissioning all replacements or new installations of non-modular package substation (non-MPS) ground-mounted transformers up to 1,000 kVA before energisation. Note: The following tests and checks must be carried after installation and before the transformer is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ________________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: _____________________________


Earth resistance Ensure that the earth resistance test has been completed with acceptable results prior to commissioning.

Insulation resistance test on the transformer winding Measure resistance after 1 minute of testing for a stable reading. (Short circuit all winding terminals of the source of the same voltage level together.)

Ensure that the high voltage (HV) and low voltage (LV) windings of the transformer are de-energised. Disconnect all connections on transformer HV and LV bushings, including the MEN/N-E connections.

Test Connection Test Voltage Resistance Expected Results

Primary/HV to tank 2.5 kV _________ Ω >1 GΩ Primary/HV to Secondary/LV 1 kV _________ Ω >100 MΩ

Secondary/LV to tank 1 kV _________ Ω >100 MΩ


Inspect the following: • rating plate • tank and bushings • tap setting • oil level • HV terminations • LV terminations • neutral connection • MEN/N-E

connections

Transformer installed as per construction standards and applicable design drawings. Transformer matches system voltage. Transformer tap is at the position as per network planning or previously installed transformer. Transformer oil level satisfactory (if visible). Transformer bushings and tank in good condition (no oil leaks). HV cables properly terminated and connected on transformer HV bushings, if applicable. The dead end plugs are correctly installed (transformers with 2 sets of HV bushings). LV cables properly terminated and connected on transformer LV bushings, if applicable. Neutral connected and earthed on transformer earth bar (MEN/N-E connections). All SPIDAWeb labels fitted and numbered correctly as per SPIDAWeb sheet. LV lead connections to the transformer LV bushings are correct as per construction standards (for new connection) or as per markings in item 3.1.4.14 of the decommissioning sheet (for replacement transformers).



Commissioning Officer : __________________________________ NAC #: ________________________________


Primary

SecondarywindingA

B C

a b

c

winding

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• Check that the transformer LV is not connected to the LV network.

• Check the HV fuse rating before energising the transformer HV.

• Conduct a voltage and phase rotation test on the LV once the transformer is energised.

Check HV fuses are correct. Record fuse rating: __________ A. Energise the transformer HV as per HV switching program (and check for abnormal noise). Record the switching program number: _________________________________

Conduct a voltage and phase rotation test on the LV side of the transformer, preferably at the LV disconnect or fuse box, and record results below. (Acceptable results in brackets.)

R to N

__________ V

W to N

__________ V

B to N

__________ V

Phase-to-neutral voltages

(216–253 V)

R to W

__________ V

W to B

__________ V

B to R

__________ V

Phase-to-phase voltages

(376–440 V)

Phase rotation test result: ____________________ Phase rotation test

(123 or ABC or RWB)

5. PHASE-OUT TEST

Conduct a phase-out test on open points of the LV network, where the LV supply is coming from another transformer.

Conduct the phase-out test under NOCC switching schedules on points of the LV network where the potential of the energised transformer can be matched with the potential of another energised transformer. This test ensures interconnections of transformers are made or can be made for operational purposes.

• If the LV conductors are energised from an interconnected transformer, conduct the phase-out test at the new transformer’s LV disconnector or fuse box.

• If the LV conductors are not energised, proceed to item 6 (ENERGISATION OF THE LV NETWORK) and conduct the phase-out test on normally open points where it can be interconnected from another transformer.

6. ENERGISATION OF THE LV NETWORK

Conduct a voltage test on the LV side of the transformer (with load).

If applicable, ensure all short-circuiting equipment is removed from the LV network.

If applicable, check that the LV fuses are correct. Energise the LV circuits in accordance with the LV switching program. Record the switching program number: _______________________________________.

Ensure that the LV network is returned to its normal operating configuration. If applicable, ensure that the LV circuits are not interconnected with any other transformers and are supplied only from the supply transformers.

Conduct a voltage test on the LV disconnector or fuse box of the new transformer to ascertain whether the transformer supply is within statutory limits during load conditions and record results below.

R to N

_________ V

W to N

_________ V

B to N

_________ V

Phase-to-neutral voltages

(216–253 V)

R to W

_________ V

W to B

_________ V

B to R

_________ V

Phase-to-phase voltages

(376–440 V)







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3.2 – NON-MPS DISTRIBUTION TRANSFORMER

Purpose: This instruction covers the decommissioning of all energised existing three-phase non–modular package substation (non-MPS) distribution transformers up to 1,000 kVA. Note: The following tests and checks must be carried out when removing or before replacing existing three-phase non-MPS distribution transformers.

Address/Pole No.: _________________________________________________________

Work Package No.:___________________ SPIDAWeb Pick ID: ____________________



Before de-energising an existing transformer, conduct a phase rotation test on the low voltage side of the transformer and record the results below (if applicable): Phase rotation test result: ____________________ The phase rotation test result must be 123/ABC/RWB. If the phasing is identified as being transposed during this test and there is no phase marking or phase transposition marking on the cable terminals, attach a caution label to inform the next person in charge of the transposed phase position.

De-energise the transformer high voltage and low voltage as per the switching program. Record the switching program number: _________________________________________

Confirm that the transformer has been de-energised, install program earths, and issue permit.



Name: ____________________________________________________ NAC #: _____________________




Before disconnecting the low voltage leads, check for any phase marking or phase transposition marking or caution label on the high voltage and secondary cable terminals. Verify by tracing the low voltage leads on the transformers, identify the phase colours on the existing transformer and mark or tag each lead with coloured tape.

Check the tap setting of the existing transformer and record results below: Tap switch position: ______



Team Leader:_______________________________________________ NAC #: _____________________


Primary

SecondarywindingA

B C

a b

c

winding

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3.3 Single-phase transformer (pole-mounted/pad-mounted) 3.3.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of single-phase (pole-mounted/pad-mounted) transformers up to 50 kVA before energisation. The testing should verify that the equipment:






3.3.2.1 Distribution transformers Distribution transformers must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.





3. Insulation and continuity tests must be carried out and the results recorded.






4. Check and comprehend the cable handover certificate (if applicable).




6. Check that the earthing grid is installed as required in the Distribution Substation Manual (if applicable).


8. Check the earthing testing schedule, if applicable. (Refer to the earth resistance testing.)

9. Check the HV cable testing schedule (if applicable).

10. Check the LV cable testing schedule (if applicable).


12. Check there are no cracked bushings (HV and LV).

13. Check that all LV connections are correct.

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14. Check that HV insulated leads are being used (LV ABC).

15. Check that there is a dropout fuse element as per the fuse chart.

16. Check that the danger plate is fitted and the transformer numbered.

17. Open all fuse ways, LV disconnectors.

18. Check and record the address/pole number, SPIDAWeb pick ID number and work package number.

19. Prepare permanent cable destination labels in accordance with Distribution Equipment Labelling – Network Standard NS 05-2000 (if applicable).

20. For pad-mounted transformers in car parks, ensure bollards are installed around the pad-mounted transformer.

3.3.4 Test criteria

3.3.4.1 Insulation resistance test Use a 2.5 kV and 1 kV insulation resistance tester for 1 minute to test the insulation resistance. The insulation resistance values are acceptable if greater than 1 GΩ at 2.5 kV for HV windings and greater than 100 MΩ at 1 kV for LV windings. The continuity test values in item 1 of the DCWI must be zero. Ensure no electrical connections have been made, including MEN/N-E connections.

3.3.4.2 Voltage test This test must be carried out as per the switching program.

When energising a transformer with and without a load, measure the voltage at the secondary/LV side.


3.3.5 Commissioning of the equipment 1. Prepare a commissioning program to energise the equipment in accordance with the Switching Operators

manuals and the switching program.

2. Carry out the commissioning as per the switching program.

3. Verify that the connections to the LV mains are correct.

4. Measure the no-load and load secondary voltage of the transformer to ensure that it meets the statutory voltage requirements.

Note: The commissioning program for the transformer may be incorporated into the commissioning program for the ring main switchgear (pad-mounted).

5. Check and record the load voltage at LV of the transformer.



8. When erecting a new or reconstructed LV apparatus, check the voltage at an existing LV point, if possible, in accordance with NOCC instructions. Phase out any newly fitted LV disconnectors and check them for sound operation.







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3.3 – SINGLE-PHASE TRANSFORMER (POLE-MOUNTED/PAD-MOUNTED)

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of single-phase pole-mounted/pad-mounted) transformers up to 50 kVA before energisation. Note: The following tests and checks must be carried out after installation and before the transformer is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: ____________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: _________________________ 1. INSULATION RESISTANCE TEST

Earth resistance Ensure that the earth resistance test has been completed with acceptable results prior to commissioning.

Ensure that the high voltage (HV) and low voltage (LV) windings of the transformer are de-energised, the HV and LV connections are removed, and the transformer LV neutral is disconnected from the MEN/N-E connections.

Test Test Connection Test Voltage Resistance Expected Results

Insulation resistance test on the transformer winding

Measure resistance after 1 minute of testing for a stable reading.

A8 to tank (two bushings only) 2.5 kV Ω >1 GΩ

SW/A8 to a1 1 kV Ω >100 MΩ

SW/A8 to a3 1 kV Ω >100 MΩ

Tank to a1 1 kV Ω >100 MΩ

Tank to a3 1 kV Ω >100 MΩ

Continuity

SW/A8 to ER/A1 1 kV Ω 0 Ω

a1 to a2 1 kV Ω 0 Ω

a3 to a4 1 kV Ω 0 Ω


Inspect the following: rating plate tank and bushings tap setting wiring installation neutral connection MEN/N-E

connections

Transformer matches system voltage. Transformer tap is at the position as per design/network planning or previously installed transformer.

Transformer installed as per design and construction standards and applicable design drawings.

Transformer bushings and tank in good condition (no oil leak).

The dead end plugs are correctly installed (transformers with 2 sets of HV bushings).

Neutral connected and earthed and MEN/N -E link connected.

All SPIDAWeb labels fitted and numbered correctly as per SPIDAWeb sheet.



Commissioning Officer: __________________________________ NAC #: ________________________________


a1

a2a3

a4A8

A1

a1ER

a2a3

a4SW

Tank

Single Bushing

Two Bushing

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4. ENERGISATION OF THE TRANSFORMER

Energisation of a transformer without load

If applicable, check that the HV fuses are correct. Record fuse rating: _____________ A.

If applicable, ensure all short-circuiting equipment has been removed from the LV network. Energise the transformers HV as per the HV switching program (and check for abnormal noise). Record the switching program number: ___________________________.

Measure voltage at the secondary/LV side.

Measured voltage

____________V

Expected values:

216–253 V for 230 V connections

376–440 V for 400 V connections

Energisation of a transformer with load

If applicable, check that the LV fuses are correct. Record the fuse rating: ___________ A.

Energise the LV mains in accordance with the LV switching program. Check and record the secondary (LV) voltage. ________________________ Record the switching program number: ______________________________

Disconnect the transformer from any interconnected transformer (if applicable).


When erecting a new or reconstructed LV apparatus, check the voltage at an existing LV point, if possible, in accordance with NOCC instructions. Phase out any newly fitted LV disconnectors and check them for sound operation.




1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return form to project file as record of commissioning. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager


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3.4 Three-phase transformer (pole-mounted) 3.4.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of three-phase pole-mounted transformers up to 315 kVA before energisation. The testing should verify that the equipment:





3.4.2 Decommissioning checks Complete the decommissioning checks on existing transformers before replacing them. These checks are essential for ensuring that the connections on the new transformer are the same as those on the previous transformer.







3. Insulation, continuity and phasing tests must be carried out and the results recorded.






4. Check and comprehend the cable handover certificate (if applicable).

Note: In most cases a combined handover certificate is issued for the transformer and cables. If the cable is to be laid by the customer, then before responsibility is handed over to Western Power for the jointing conduct a pre-acceptance test (insulation resistance test) to determine the state of the cable.


6. Check the earthing testing schedule, if applicable. (Refer to earth resistance testing.)


8. Check the LV cable testing schedule (if applicable).


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3.4.5 Test criteria

3.4.5.1 Insulation resistance test Use a 2.5 kV and 1 kV insulation resistance tester for 1 minute to test the insulation resistance on the transformer winding.



3.4.5.2 Voltage test This test must be carried out as per the switching program.

When energising a transformer with and without a load:

ensure the red to neutral, white to neutral and blue to neutral test results are within the acceptable range (216 V to 253 V)

ensure the red to white, white to blue and blue to red test results are within the acceptable range (376 V to 440 V).


If the LV conductors are energised from an interconnected transformer, conduct the phase-out test at the new transformer’s LV dis-connector or fuse box.

If the LV conductors are not energised and for sole use, conduct the phase-out as required.

When erecting a new or reconstructed LV apparatus, conform to the Western Power practices for the construction of distribution overhead lines. Phase out at an existing LV point, if possible. Phase out any newly fitted LV disconnectors and check them for sound operation.




3. Verify that the connections to the LV mains are correct.

4. Measure the no-load secondary voltage of the transformer to ensure that it meets the statutory voltage requirements at the supply side of the LV disconnector or downstream of the disturbed connection.



7. Check that the phase rotation and synchronisation are correct.


9. Check and record the load voltage on each phase of the LV of the transformer.





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OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION 3.4 – THREE-PHASE POLE-MOUNTED TRANSFORMER

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of three-phase pole-mounted distribution transformers up to 315 kVA before energisation. Note: The following tests and checks must be carried out after installation and before the transformer is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: ________________________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: ________________________

1. PRE-INSTALLATION CHECKS

Complete these checks and tests before installing the wiring.

Ensure that the earth resistance test has been completed with acceptable results prior to commissioning.

Ensure that the high voltage (HV) and low voltage (LV) windings of the transformer are de-energised, the HV and LV connections are removed, and the transformer LV neutral is disconnected from the MEN link/ N-E connections.

Insulation resistance test on the transformer winding (Short circuit all winding terminals of the source of the same voltage level together.)

Test Connection Test Voltage Resistance Expected Results

Primary/HV to tank 2.5 kV ________ Ω >1 GΩ

Primary/HV to secondary/LV 1 kV ________ Ω >100 MΩ

Secondary/LV to tank 1 kV _________Ω >100 MΩ


Inspect the following: • rating plate • tap setting • tank and bushings • oil level • wiring Installation • neutral connection • MEN/N-E

connections

Transformer matches system voltage.

Transformer tap is at the position as per network planning (new installations) or as per the tap switch position in item 3 of the decommissioning work instruction (for replacement transformers).

Transformer bushings and tank in good condition (no oil leaks).

Oil level satisfactory (if visible).

Transformer installed as per construction standards and applicable design drawings.

Neutral connected and earthed and MEN / N-E link connected.


LV lead connections to the transformer LV bushings are correct as per construction standards (as per manufactures for new connection) or as per markings in item 3.1.4.14 of the decommissioning sheet (for replacement transformers).


• Check that the transformer LV is not connected to the LV network.

• Check the HV fuse rating before energising the transformer HV.

• Conduct the voltage and phase rotation test once the transformer is energised.

Check if HV fuses are correct. Record the fuse rating: __________ A.

Energise the transformer HV as per the HV switching program (and check for abnormal noise). Record the switching program number: __________________________.

Conduct a voltage and phase rotation test on the LV side of the transformer, preferably at the LV disconnectors or fuse box, and record the results below.

R to N __________ V

W to N __________ V

B to N __________ V

Phase-to-neutral voltages (216–253 V)

R to W __________ V

W to B __________ V

B to R __________ V

Phase-to-phase voltages (376–440 V)

Phase rotation test result: ________________ The phase rotation test result must be 123/ABC/RWB for a new installation or as per item 1 of the decommissioning sheet for a replacement transformer.

Primary

SecondarywindingA

B C

a b

c

winding

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4. PHASE-OUT TEST

Conduct a phase-out test on open points of the LV network, where the LV supply comes from another transformer.

Conduct the phase-out test under NOCC switching schedules on points of the LV network where the potential of the energised transformer can be matched with the potential of another energised transformer. This test ensures the interconnection of transformers is made or can be made for operational purposes. • If the LV conductors are energised from an interconnected transformer, conduct the phase-out

test at the new transformer’s LV disconnector or fuse box. • If the LV conductors are not energised, proceed to item 5 (ENERGISATION OF THE NETWORK

WITH LOAD) and conduct the phase-out test on normally open points where it can be interconnected from another transformer.

• When erecting a new or reconstructed LV apparatus, conform to the Western Power practices for the construction of distribution overhead lines. Phase out at an existing LV point, if possible. Phase out any newly fitted LV disconnectors and check them for sound operation.

5. ENERGISATION OF THE NETWORK WITH LOAD

• Carry out the LV switching program and return the LV network to its original operating configuration.

• Perform a voltage test to recheck the voltage.

If applicable, ensure all short-circuiting equipment is removed from the LV network.

If applicable, check that the LV fuses are correct. Record the fuse rating: _____A.

Energise the LV circuit in accordance with the LV switching program. Record the switching program number: _________________________________________.

Ensure that the LV network is returned to its normal operating configuration. If applicable, ensure that the LV circuits are not interconnected with any other transformers and are supplied only from the supply transformer.

Conduct a voltage test on the LV disconnector or fuse box of the new transformer to ascertain that the transformer supply is within statutory limits during load conditions and record the results below.

R to N __________ V

W to N __________ V

B to N __________ V

Phase-to-neutral voltages (216–254 V)

R to W __________ V

W to B __________ V

B to R __________ V

Phase-to-phase voltages (376–440 V)






1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file folder as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager


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3.4 – THREE-PHASE POLE-MOUNTED TRANSFORMER

Purpose: This instruction covers the decommissioning of all energised existing three-phase pole-mounted distribution transformers up to 315 kVA. Note: The following tests and checks must be carried out when removing or before replacing existing three-phase pole-mounted distribution transformers.

Address/Pole No.: ________________________________________________________

Work Package No.:___________________ SPIDAWeb Pick ID: ____________________



Before de-energising an existing transformer, conduct a phase rotation test on the low voltage side of the transformer and record results below (if applicable):

Phase rotation test result: ____________________

The phase rotation test result must be 123/ABC/RWB.

If the phase sequence is transposed without any phase markings on the pole or cable terminals, attach a caution label to inform the next person in charge of the changes.

De-energise the transformer high voltage and low voltage as per the switching program. Record the switching program number: _________________________

After confirming that the transformer has been de-energised, install program earths and then issue permit.



Name: ____________________________________________________ NAC #: _____________________




Before disconnecting the low voltage leads, check for any phase marking or phase transposition marking or caution label on the pole. Verify by tracing the low voltage leads on the transformers, identify the phase colours on the existing transformer and mark or tag each lead with coloured tape.

Check the tap setting of the existing transformer and record the result below:

Tap switch position: ______



Team leader: _______________________________________________ NAC #: _____________________


Primary

SecondarywindingA

B C

a b

c

winding

DCWI


3.5 SWER isolation transformer (pole-mounted) 3.5.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of SWER isolation transformers up to 200 kVA before energisation. The testing should verify that the equipment:




Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual, Switching Operators Manual 1 and the switchgear manufacturer’s operating and commissioning manual.






2. As he installer must affix temporary labels to all relevant network equipment such as transformers and switch fuse units, stating the destinations of all cables.






3. Check the transformer handover certificate.

4. Check the cable handover certificate (if applicable).




7. Check the earthing testing schedule, if applicable. (Refer to earth resistance testing.)






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3.5.4 Test criteria

3.5.4.1 Transformer test Use a 2.5 kV insulation resistance tester for 1 minute.

Insulation resistance values greater than 1 GΩ for 2.5 kV are acceptable. The continuity test value must be zero.

Ensure no electrical connections have been made, including MEN links /N-E connections.

3.5.5 Commissioning of the equipment 1. Prepare a commissioning program to energise the equipment in accordance with the Switching Operators

manuals and the switching program.

2. Check that the HV fuses are correct.



5. Check for abnormal noise.

6. Measure and record the voltage reading of the transformer at the control of the single-phase recloser (if available).






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3.5 – SWER ISOLATION TRANSFORMER (POLE-MOUNTED) Purpose: This instruction covers the testing and commissioning of all replacements or new installations of pole-mounted SWER isolation transformers up to 200 kVA before energisation. Note: The following tests and checks must be carried out after installation and before the transformer is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: __________________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: _______________________ 1. TRANSFORMER TESTS

• Ensure that the earth resistance has been tested and is acceptable. • Ensure all electrical connections have been disconnected, including MEN links/N-E links. • Record the insulation resistance after 1 minute of testing.

Stock number XT 0189, XT 0190, XT 0195 XT 0198, XT 0196 XT 0192 XT 0193

Transformer diagram

A10 SW

ERA1

SW3

SW2

ER

SW1 SW2

ER2ER1

A8

ERA1

SW

Insulation resistance test using 2.5 kV (greater than 1 GΩ acceptable)

A10 to SW _____________Ω SW3 to tank

_____________Ω

SW1 to SW2 _____________Ω

A8 to SW _____________Ω

A10 to tank _____________Ω

SW1 to tank _____________Ω

A8 to tank _____________Ω

Winding continuity test using 1 kV (0 Ω acceptable)

A10 to A1 _____________Ω

SW3 to ER _____________Ω

SW1 to ER1 _____________Ω

A8 to A1 _____________Ω

SW to ER _____________Ω

SW2 to ER _____________Ω

SW2 to ER2 _____________Ω

SW to ER _____________Ω


Inspect the following: • rating plate • tank and bushings • tap setting • wiring • neutral connection • MEN links /N-E

connections

Transformer matches system voltage. Transformer installed as per construction standards and applicable design drawings. HV bushings connected. Neutral connected and earthed and MEN links /N -E links reconnected. Transformer tap is at the position as per design/network planning or previously installed transformer.

Transformer bushings and tank in good condition (no oil leak). All SPIDAWeb labels fitted and numbered correctly as per SPIDAWeb sheet.

3. ENERGISATION

Energisation of a transformer without a load

Check that the HV fuses are correct. Energise the transformer as per the switching program. (Check for abnormal noise.) Record the voltage reading at the control of the 1-ph recloser, if available. ______V

Energisation of a transformer with a load

Energise the load as per the switching program. Ensure the transformer is operating normally.

Note: When erecting a new or reconstructed LV apparatus, check the voltage at an existing LV point, if possible, in accordance with NOCC instructions. Phase out any newly fitted LV disconnectors and check them for sound operation.


I hereby certify that all items have been completed with satisfactory results and transfer control to the network operating authority. Commissioning officer: ______________________________________________ NAC #: ________________________




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3.6 SWER isolation transformer (ground mounted) 3.6.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of ground-mounted SWER isolation transformers up to 315 kVA before energisation. The testing should verify that the equipment:

















4. Check and comprehend the cable handover certificate.





8. Check the earthing testing schedule. (Refer to the earth resistance testing.)

9. Check the HV cable testing schedule.





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3.6.4 Test criteria

3.6.4.1 Transformer tests Use a 2.5 kV insulation resistance tester for 1 minute at the following connections:

Insulation resistance test values greater than 1 GΩ for 2.5 kV are acceptable.

The continuity test value must be zero.

Ensure no electrical connections have been made, including MEN links/N-E connections.


manuals.

2. Check that the HV fuses are correct.


4. Check for abnormal noise.







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3.6 – SWER ISOLATION TRANSFORMER (GROUND MOUNTED)

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of single-phase ground-mounted SWER isolation transformers up to 315 kVA before energisation. Note: The following tests and checks must be carried out after installation and before the transformer is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: _____________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: __________________ 1. TRANSFORMER TESTS

• Ensure that the earth resistance has been tested and is acceptable. • Ensure all electrical connections have been disconnected, including the MEN/N-E connections. • Record the insulation resistance after 1 minute of testing.

Test Test Connection Test Voltage Resistance Expected Values

Insulation resistance test on the transformer winding

Ain to tank 2.5 kV _____ Ω > 1 GΩ Ain to SW1 2.5 kV _____ Ω > 1 GΩ SW1 to tank 2.5 kV _____ Ω > 1 GΩ Cin to tank 2.5 kV _____ Ω > 1 GΩ

Continuity test on the transformer winding

Ain to Bin 1 kV _____ Ω 0 MΩ

SW1 to ER 1 kV _____ Ω 0 MΩ


Inspect the following:

• rating plate • tank and bushings • tap setting • wiring installation • markings labels and

danger plate

Transformer matches system voltage. Transformer tap is at the position as per design/network planning or previously installed transformer.

Transformer bushings and tank in good condition (no oil leak). Transformer installed as per construction standards and applicable design drawings.

HV cables properly terminated connected and marked/labelled.

Unused bushings are properly capped.

Neutral connected and earthed, and MEN/N - E link connected.

Transformer’s danger plate is fitted.




Testing officer / cable jointer / CPM: _________________________ NAC #: ________________________________


A1

A9

6

5

FA

FB

A

Ain

ina1

a2

Tank

7

4

8

32

Aout

CinCout

Bin

Bout

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4. ENERGISATION

Energisation of a transformer without a load

Check that the HV fuses are correct.

Energise the transformer as per the switching program (and check for abnormal noise).

Record the voltage reading at the control at the 1-ph recloser, if available. _______

Energisation of a transformer with a load

Energise the load as per the switching program.

Ensure the transformer is operating normally.

Note: When erecting a new or reconstructed LV apparatus, check the voltage at an existing LV point, if possible, in accordance with NOCC instructions. Phase out any newly fitted LV disconnectors and check them for sound operation.


I hereby certify that all items have been completed with satisfactory results and transfer control to the network operating authority. Commissioning officer: _______________________________________ NAC #: _____________________




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Section 4 – Distribution equipment The intention of this section is to provide details of commissioning requirements for distribution equipment. This section currently contains details of: 1. Earth testing

2. Nu-Lec load break switch/sectionaliser

3. Nu-Lec pole-mounted automatic recloser

4. Pole-top switch

5. Pole-mounted capacitor bank

6. Single-phase underground rural supply fuse switch

7. Voltage regulator (closed Delta connection)

8. Voltage regulator (Star connection)

9. HV ring main switchgear

10. LV kiosk.

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4.1 Earth testing 4.1.1 Purpose This instruction covers testing of the earth resistance of electrodes or earth systems.

Good earthing systems are essential for the protection of personnel from electrical shock and the protection of electrical equipment from dangerous overvoltage and excess current.

4.1.2 Scope This instruction must be followed for all earth resistance testing in Western Power’s SWIS distribution network.

4.1.3 References AS 2067 Substations and HV Installations Exceeding 1 kV AC.

Electrical System Safety Rules.

Distribution Design Catalogue.

Distribution Substation Manual.

4.1.4 Responsible persons The project manager or officer in charge is responsible for testing in accordance with this instruction.

The tester in charge is responsible for carrying out tests in accordance with this instruction and recording all test results and comments where relevant.

4.1.5 Test equipment The following test equipment is required for the tests outlined in this instruction:

a ground resistance tester.

4.1.6 Instructions For combined earthing systems, measure resistance to earth of the completed system with all earth connections and neutral-earth connections in place. Record the results.

For separate earthing systems, measure the resistance to earth of the HV earthing system and the LV system independently and separately. The measurements must be made independently of any connection between the neutral conductor and earth elsewhere within the electrical installation. Record the results.

AS 2067:2008 section 8.2.3.


4.1.7 Test criteria

4.1.7.1 Earthing system resistance test (fall of potential method) The earth connections of the earthing systems must be located, installed and maintained so that the resistance to earth must not exceed the expected values as specified in the Distribution Commissioning Work Instruction.

The resistance specified in HV and LV systems must be achieved independently of any connections between the neutral conductor and earth at other points within the electrical installation.

4.1.7.2 Resistance to earth – combined earthing system

The combined earthing system must have a resistance to earth not greater than 1Ω.

A resistance of 1 Ω may be achieved by connection to electrode systems, metallic cable sheaths or LV neutrals, provided that when any such connection is temporarily removed for test or maintenance purposes the resistance of the remaining earthing connections does not exceed 30 Ω.

A resistance to earth value greater than 1 Ω may be appropriate where step and touch potentials are satisfactory.


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4.1.8 Commissioning of the equipment 1. The commissioning officer must sign off on the testing schedule and include appropriate registration and

licence numbers where applicable.





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4.1 – EARTHING SYSTEM RESISTANCE TESTING (ALL EQUIPMENT)

Purpose: This instruction covers testing of the earth resistance of electrodes or earth systems. Good earthing systems are essential for the protection of personnel from electrical shock and the protection of electrical equipment from dangerous overvoltage and excess current. Note: The following tests must be carried out on all replacements or new installations before they are put into service. If testing whether existing earth electrodes are connected to the network, refer to the Work Practice Manual. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: _________________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: ______________________________

1. PRE-TEST CHECK

Visual inspection

Rated system voltage Volts Equipment being protected by the earth system (e.g. transformer, pole-top switch)

No. of earth electrodes per earthing point # Approximate depth of earth electrodes a) b) Metres

Size of earth cables mm2

Check that the earth conductors are correctly installed to the earth bar (if applicable) and that there are no signs of damage.

Check that the earth electrodes are properly installed and connected to the earth system by earth conductors.

Check that the earth pits are properly installed, access to the earth electrode is possible and the earth pit lids are in good condition.

Check that the compound earth grid is bonded to the substation screening fence (not a customer property bounded fence) and connected to a MEN / N–E connections or earth terminals bar (if applicable).

2. EARTHING SYSTEM RESISTANCE TEST

Fall of potential method

Test Equipment: Earth Resistance Tester (three-pole fall of potential method)

The earth electrode under test (electrode 1) must be disconnected from the earthing system. This test involves two test instrument electrodes (electrode 2 and electrode 3). If the depth of electrode 1 is d, then the test probe P (electrode 3) of the tester must be placed at a minimum of 2 x d from the earth electrode 1 and the C probe (electrode 2) must be minimum 3.2 x d from the earth electrode 1(in that ratio where P is 62% of the distance between the earth electrode and C probe). This ensures an accurate earth resistance measurement. Otherwise, the measurement would result in higher resistance readings due to summation of the zones of influence of the earth electrode and the C probe.( see probe spacing table 1 below) In the case that the electrode under test (electrode 1) is unknown, install the electrode 2 at a distance of 50 metres away, and electrode 3 at a distance of 31 metres (around 62% of the distance between electrodes 1 and 2) in a straight line. This test is repeated by moving the electrode 3 a distance of 3 metres forwards and backwards from its initial position and in straight line. The final test result is the average of the three test results. (See diagram 1 below.)

Test results

First Test Initiate test: Electrode 2 at C metres Electrode 3 at 0.62C metres Record value:

Second Test Reposition electrode 3: + 3 metres from initial position Record value:

Third Test Reposition electrode 3: - 3 metres from initial position Record value:

Ω Ω Ω

Average the value of the three tests and record. Ω

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Acceptable values (Distribution Substation Manual)

Description Maximum Allowable Resistance

High voltage system – overhead systems (each electrode) max 30 Ω

Low voltage system: transformer rating up to 63 kVA max30 Ω

Low voltage system: pole-top transformer not greater than 315 kVA max30 Ω

Low voltage system: pad-mounted transformer rating 160 kVA or greater (each electrode) max 10 Ω

High voltage system: underground system (ground mounted equipment) (each electrode) max 10 Ω

Combined HV-LV earthing system (e.g. transformers) max 1 Ω

Electrode 1

d

Diagram 1Percentage of the distance from Electrode 1 to Electrode 2

Electrode 2( Probe C )

100%

Resis

tanc

e, O

hms

Earth Resistance

Tester

EarthElectrode being

tested

Electrode 3( Probe P )

C

62% of C

0

10

20

30

40

50

60

0 20% 40% 60% 80%

Earth Resistance

+3m-3m

R 10 Ω ?

Resis

tanc

e, O

hms

d

ELECTRODE DEPTH Test Lead lengths from Earth Electrode Potential Probe (P) Current Probe (C)

<15m 30m 50m 15 - 30m 60m 100m 30 - 45m 90m 150m 45 - 60m 120m 190m 60 - 75m 150m 240m 75 - 100m 200m 320m

Straight line probe spacing table 1 (Western Power Network)

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1. Ensure the work area is left tidy and no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager


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4.2 Nu-Lec load break switch/sectionaliser 4.2.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of a Nu-Lec load break switch (LBS)/sectionaliser before energisation.



4.2.3 Equipment pre-handover status A Nu-Lec load break switch/sectionaliser must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.


4.2.4 Pre-commissioning checks 1. Check and comprehend the handover certificate.

2. Check that the SPIDAWeb pick ID/pole numbers for each item are in accordance with the as-constructed drawings.

3. Check the earthing testing schedule. (Refer to the earth testing.)

4. Check that the antenna is aligned to the correct bearing (applicable radio comms only) and installed correctly (with elements vertical and drain hole down). Antenna pole brackets with open slotted fixing holes are not permitted.


4.2.5 Test criteria

4.2.5.1 Insulation resistance test Test the insulation resistance using a 5 kV insulation resistance tester between each phase conductor and the load break switch tank. Record the measured resistance (MΩ). The insulation resistance test results should be taken after 1 minute of testing. Values greater than 100 MΩ are acceptable. Check the indicator position.

4.2.5.2 Continuity test Use an insulation resistance tester to verify the continuity of the circuit. Check the indicator position.

4.2.5.3 Polarity test Use a voltmeter or multi-tester on the 240 V supply to verify the correct supply to the controls and its safe operation.


4.2.6 Operations and communications (controller)

4.2.6.1 Pole-top control cubicle The switching contacts are driven by an over-centre spring mechanism to ensure that the operating speed is always constant, independently of the speed of the operator. The mechanism can be driven by either a manual hookstick or an electric motor.

The pole-top control cubicle (PTCC) controller works intimately with the on-board electronics of the RL-Series switch. Key electrical characteristics of the switch are stored in the on-board electronics. Thus, any PTCC controller can be connected to any RL-Series switch, and the controller immediately reads the on-board memory and recognises the switch, adapting to suit the characteristics of the switch.

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4.2.6.2 Control cabinet Check that the antenna surge diverter is fitted at the base of the control box.

4.2.7 Commissioning of the equipment 1. Carry out the commissioning program in accordance with Switching Operators Manual 1 and the switching

program.

2. Conduct a phase-out test under NOCC switching schedules if the conductors on both sides of the switch are energised from different feeders. Use appropriate phasing devices to ensure that phases on the left side of the switch are in phase with those on the right side of the switch.

3. Ensure that the alarm and controls are set to the required parameters.


5. Hand over responsibility to NOCC.



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OBSERVE SAFETY LIFESAVERS DISTRIBUTION COMMISSIONING WORK INSTRUCTION 4.2 –NU-LEC LOAD BREAK SWITCH/SECTIONALISER

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of a Nu-Lec load break switch (LBS)/sectionaliser before energisation. Note: The following tests must be carried out after installation and before the switch/sectionaliser is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ______________________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: ___________________________ 1. PRE-INSTALLATION CHECK

Earth resistance test and LBS nameplate

Ensure that the earth resistance test result is acceptable.

Ensure that the switch rating matches the system voltage (RL27 for 11 & 22 kV; RL38 for 33 kV).

2. INSULATION RESISTANCE AND CONTINUITY TEST Test Type Contact Position Test Results Acceptable Results

Insulation resistance test

Use a 5 kV insulation resistance tester.

Measure resistance after 1 minute of testing.

Closed position (Check indicator position.)

I red to II white MΩ

Not less than 100 MΩ

I red to III blue MΩ

II white to III blue MΩ

I red to tank MΩ

II white to tank MΩ

III blue to tank MΩ

Open position (Check indicator position.)

I red to X red MΩ

Not less than 100 MΩ II white to XX white MΩ

III blue to XXX blue MΩ

Continuity test Use an insulation resistance tester.

Closed position (Check indicator position.)

I red to X red MΩ

0 MΩ II white to XX white MΩ

III blue to XXX blue MΩ

3. INSTALLATION CHECK

Structure


Check that the anti-climbing guards and danger plate are fitted and correctly numbered. Check that all the connections (including the LBS and control cabinet) are properly connected and bonded to earth.

Control cabinet Check that the antenna surge diverter is fitted at the base of the control box.

Antenna Check that the antenna is aligned to the correct bearing (applicable radio comms only) and installed correctly (with elements vertical and drain hole down). Antenna pole brackets with open slotted fixing holes are not permitted.

4. ENERGISATION

Energisation

Ensure that all working earths and programmed earths are removed (if applicable).

Conduct a phase-out test under NOCC switching schedules if the conductors on both sides of the switch are energised from different feeders. Use appropriate phasing devices to ensure that phases on the left side of the switch are in phase with those on the right side of the switch.

Connections Phase-out Test Results

Red —

red In phase yes no yes no yes no

white

blue

White —


white

blue

Blue —


white

blue

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Energisation (continued)

Ensure the switch is in the correct position (open or closed) as per the switching program or network configuration.

Energise the switchgear as per the switching program and/or network configuration.

Remove all bypass jumpers (if applicable).

Disable or disconnect the trip and close coils, comms device (radio etc.).

Energise the control box and conduct a polarity test on the 240 V supply and the 240 V surge arrester.

Ensure that the control unit indication matches the switchgear status.

Check for any signs of abnormality.

5. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1–4 I hereby certify that items 1 to 4 have been completed with the above results and transfer control to the commissioning officer.



1. Lock the control unit doors using two approved (NMK2) Western Power padlocks. NK6 padlocks must not be reused. 2. Attach an “Out Of Service (Warning)” tag to the padlock on the front of the control cabinet. 3. Inform NOCC of the status of the switchgear. 4. Ensure the work area is left tidy with no hazards to the public. 5. Hand over responsibility to the Field Services (Primary Response Group) for the commissioning of alarms and remote controls. 6. ALARM AND CONTROL TESTING

Setting the controller

Secondary Distribution Network Access Request number: __________

Ensure that the correct controller firmware is used.

Ensure that all the indications from the controller are normal.

Ensure that all the required settings have been installed.

Perform the following tests in coordination with NOCC:

Name of the network operations controller assisting the commissioning: ____________________________________________________________

Enable/connect the communication device (radio, etc.).

Check that all the alarms and controls tested to NOCC have been successful.

Ensure that the phase fault, earth fault, and sensitive earth fault detection settings have been recorded by the network controller.

Ensure that the analogues (I, V, kW & kVAR) have been recorded by the network controller.

Enable/connect the trip and close coils and check operation.

Remove the “Out Of Service (Warning)” tag from the padlock on the front of the control cabinet.


I hereby certify that item 6 has been completed with satisfactory results and transfer control to the network operating authority.



1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to NOCC. 3. Return this form to the project file as a record of the commissioning/handover certificate. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager


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4.3 Nu-Lec pole-mounted automatic control recloser 4.3.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of Nu-Lec pole-mounted automatic reclosers before energisation.



4.3.3 Equipment pre-handover status A Nu-Lec pole-mounted automatic recloser must be installed in accordance with the appropriate guidelines in Distribution Construction Handbook HB01 and applicable design drawings.




2. Check that the SPIDAWeb pick ID and pole numbers for each item are in accordance with the as-constructed drawings.

3. Check the earthing testing schedule. (Refer to the heading earth testing.)

4. Consult the Nu-Lec pole-mounted automatic recloser manufacturer’s operating and commissioning instruction manual to identify any special items that are required to be checked or examined before the equipment is placed in service.

5. Check the maximum separation between the down earth and the recloser umbilical cable.

6. Check that the pole is labelled correctly.

7. Ensure the 240 V white thermal plastic sheath is continuous up to the circuit breaker and stripped minimally to terminate the active and neutral conductors. Install or run the 240 V thermal plastic sheath cable behind the gear tray (without a conduit). The earth in the thermal plastic sheath cable can be cut as it need not be connected.

8. Check that the antenna surge diverter is fitted at the base of the control box.



4.3.5 Test criteria

4.3.5.1 Insulation resistance test Use a 5 kV insulation resistance tester and take the resistance values after 1 minute of testing. Test the recloser in the OFF (open contact) position. Operate the manual trip lever if required.

Test and record the insulation resistance values.


4.3.5.2 Polarity test Energise the control box and conduct a polarity test on the 240 V supply.


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4.3.6 Commissioning of the equipment 1. Carry out the commissioning in accordance with Switching Operators Manual 1 and the switching program.

2. Before closing an automatic control recloser on the distribution network, phase out the HV.

3. Ensure that the alarms and controls are set to the specified requirements.


5. Hand over responsibility to NOCC.



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4.3 – NU-LEC POLE-MOUNTED AUTOMATIC CONTROL RECLOSER

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of Nu-Lec pole-mounted automatic reclosers before energisation. Note: The following tests must be carried out after installation and before the recloser is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ________________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: _____________________ 1. PRE-INSTALLATION CHECK

Earth resistance test and recloser nameplate


Ensure that switch rating matches the system voltage. Note: Three-phase reclosers with internal voltage transformers (identified by three nameplates) can only be removed under an electrical access permit; an insulation resistance test between V1 and W1 is not applicable.

2. INSULATION RESISTANCE TEST (FOR A SINGLE-PHASE RECLOSER) Use a 5 kV insulation resistance tester. Measure the resistance after 1 minute of testing. Put the test recloser in the OFF (open contact) position. Operate the manual trip level if required.

Bushings Test Results Acceptable Results

Between contacts X & I MΩ Not <100 MΩ Short-circuit all bushings and

test simultaneously to tank. MΩ

3. INSULATION RESISTANCE TEST (FOR A THREE-PHASE RECLOSER)

Put the test recloser in the OFF (open contact) position. Operate the manual trip lever if required. Use a 5 kV insulation resistance tester. Measure resistance after 1 minute of testing.


Supply side

U1 red to V1 white MΩ

Not <100 MΩ

V1 white to W1 blue MΩ W1 blue to U1 red MΩ

Load side

U2 red to V2 white MΩ V2 white to W2 blue MΩ W2 blue to U2 red MΩ

Between contacts

U1 red to U2 red MΩ V1 white to V2 white MΩ W1 blue to W2 blue MΩ

Short-circuit all bushings and test simultaneously to tank.

Bushings to tank MΩ

Note: When a Nu-Lec pole-mounted automatic control recloser is closed, the insulation resistance between contacts of the same phase (U1-U2, V1 – V2 and W1-W2) should be zero.


Recloser

Check the recloser for damage, tank, bushings, cracks in boots and excessive dirt.

For relocated reclosers, all the HV boots must be removed, cleaned and repacked with silicon grease. Ensure the boots are filled fully with silicon grease and that no air gaps or moisture are present.

Ensure the bushing palms and the lugs have the correct torque: Three-phase [Palms x 70 Nm Lugs x (1 hole 60 Nm) (2 holes 44 Nm)] Single-phase [Lug x (1 hole 30 Nm)].

Check that all the HV lightning arresters have bird caps fitted and are tightened correctly.

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Structure


Check that the anti-climbing guards and danger plate are fitted and correctly numbered.

Check that all the connections (including the recloser and control cabinet) are properly connected and bonded to earth.

Check the maximum separation between the down earth and the recloser umbilical cable.

Check that the pole is labelled correctly.

Control cabinet

Ensure the 240 V white thermal plastic sheath is continuous up to the circuit breaker and stripped minimally to terminate the active and neutral conductors. Install or run the 240 V thermal plastic sheath cable behind the gear tray (without a conduit). The earth in the thermal plastic sheath cable can be cut as it need not be connected.

Check that the antenna surge diverter is fitted at the base of the control box.

Antenna Check that the antenna is aligned to the correct bearing (applicable radio comms only) and installed correctly (with elements vertical and drain hole down). Antenna pole brackets with open slotted fixing holes are not permitted.

5. ENERGISATION

Energisation

Where an automatic control recloser can be connected to the distribution network, phase out under NOCC switching schedules at a HV point such as a pole-top switch.

Ensure that the switch is in the correct position (open or closed) as per the switching program or network configuration.

Energise the switchgear as per the switching program and network configuration.

Remove all bypass jumpers (if applicable).

Disable/disconnect the trip and close coils and the communication device (radio, etc.).

For testing purposes, use an effective earthed reference point spaced more than 2 meters from any electrically conductive object embedded in the ground. Energise the control box and conduct a polarity test on the 240 V supply.

Check and ensure that the control unit indication matches the switchgear status.





1. Lock the control unit doors using two approved (NMK2) Western Power padlocks. NK6 padlocks must not be reused.

2. Attach an “Out Of Service (Warning)” tag to the padlock on the front of the control cabinet. 3. Inform NOCC of the status of the switchgear. 4. Ensure the work area is left tidy with no hazards to the public. 5. Hand over responsibility to the Field Services (Primary Response Group) for the commissioning of alarms and

remote controls.

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7. ALARM AND CONTROL TESTING


Secondary Distribution Network Access Request number: ______.

Ensure the correct controller firmware is used.


Ensure all the required settings have been installed.

Perform the following tests in coordination with NOCC:

Name of the network operations controller assisting the commissioning: ___________________________________________________________


Check that all the alarms and controls tested to NOCC have been successful.

Phase fault, earth fault and sensitive earth fault detection settings have been recorded by the network controller.

Ensure the analogues (I, V, kW & kVAR) have been recorded by the network controller.

Enable/connect the trip, close coils and check operation.




Commissioning officer:____________________________________ NAC #: __________________________

Signature:________________________________ Date & time: ____________________________________

1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to NOCC. 3. Return this form to the project file folder and file as a record of commissioning. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the


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4.4 Pole-top switch 4.4.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of pole-top switches before energisation.


If a transformer and LV switchgear are to be commissioned at the same time as the pole-top switch, refer to the instructions for commissioning these items of equipment and include the appropriate switching operations in the switching program.


4.4.3 Equipment pre-handover status Pole-top switches must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.

On completion, the installer must issue an earthing testing schedule and handover certificate to the operating authority.

Ensure that the retaining springs of the polo switch are correctly installed.

4.4.4 Pre-commissioning checks The following steps are to be carried out with the switch de-energised.


2. Check that the SPIDAWeb pick ID numbers for each item are in accordance with the as-constructed drawing.

3. Install the earth electrode (maximum 30 Ω).

4. Check that the switch body is earthed to the earthing stud on top of the pole (if using a concrete pole).

5. Ensure that the switch body, switch handle and earth mat are properly earthed and secured.

6. Check the insulated earthing cable used to connect the switch body to the operating mechanism at the base of the pole (if using a wood pole) or connect the operating mechanism to the earth stud at the base of the pole using insulated wire (if using a concrete pole).

7. Check that the switch handle has a separate connection to the operating mechanism—do not rely on hinge/pivot points.

8. Check that the operating mechanism has a separate connection to the earth mat and a separate connection to the earth stakes.

9. Check the earthing at the base of the pole (and grease if required). Check that the earth mat is at the correct position for operator safety when operating the switch handle. The earth mat should be above ground, not buried.

10. Check the mechanical operation of the switch and adjust as necessary for smooth operation. Check that all contacts are seated correctly in the closed position.

11. Ensure that the switch has a danger plate affixed and is numbered.

12. Fit a Western Power approved lock and ensure that the switch handle is lockable in both open and closed positions.

Note: An NK6 padlock must not be re-used.


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4.4.5 Commissioning of the equipment 1. Carry out the commissioning in accordance the Switching Operators manuals and the switching program.

2. Conduct a phase-out test under NOCC switching schedules if the conductors on both sides of the switch are energised from different feeders. Use appropriate phasing devices to ensure that phases on the left side of the switch are in phase with those on the right side of the switch.

3. Set the auto-reclose on the HV feeders on either side of the switch to manual.

4. If required, close the switch; otherwise leave in the open position. Lock the switch handle.

5. Record the switching program number.

6. Replace the temporary labels with permanent labels.

7. Ensure all equipment is in its final circuit condition and that all normally open points are set to their designated position.

8. Ensure all equipment is locked, signposted and protected from unauthorised access.





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4.4 – POLE-TOP SWITCH

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of pole-top switches before energisation. Note: The following test must be carried out after installation, alteration and before the switch is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: ___________________________________________________________________ Work Package No.:_________________ SPIDAWeb Pick ID: _______________________________ 1. INSTALLATION OPERATION AND CONSTRUCTION CHECKS

Pre-construction checks Ensure that the earth resistance test result is acceptable (<30 Ω). Write the actual value: ___ Ω.

Ensure that the switch rating matches the system voltage.

Install switch with blades and contacts de-energised and operate for a functional test.

Ensure that the blades (flexi-tails) are properly oriented. Ensure that the retaining springs of the pole-top switch are correctly installed. Operate the pole-top switch and ensure that it opens and closes smoothly, that the contacts are fully seated in the closed position, and that all three blades are firm and operate simultaneously. (Adjust if necessary.)

Ensure a Western Power approved lock fits in both open and closed positions.

Construction checks

Check that construction complies with the distribution construction standards and applicable design drawings.

Check that the anti-climbing guards and danger plate are fitted correctly. Check that the structure is numbered and labelled correctly. Ensure the switch body, switch handle and earth mat are properly earthed and secured.

2. TESTING

Testing

Ensure that all working earths and programmed earths are removed (if applicable). Ensure that the switch is in the correct position (open or closed) as per the switching program or network configuration.

Conduct a phase-out test under NOCC switching schedules if the conductors on both sides of the switch are energised from different feeders. Use appropriate phasing devices to ensure that phases on the left side of the switch are in phase with those on the right side of the switch.

Phase-out test results Connections In phase?

Red red yes no N/A

white yes no blue yes no

White red yes no N/A


Blue red yes no N/A


3. ENERGISATION

Energisation Ensure that all bypass jumpers have been removed (if applicable). Operate the switch as per the switching program number.

4. HANDOVER OF RESPONSIBILITY I hereby certify that items 1 to 3 have been completed with the above results and transfer control to the network operating authority. Commissioning officer: ______________________________________________ NAC #: ________________________




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4.5 Pole-mounted capacitor bank 4.5.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of pole-mounted capacitor banks before energisation. The testing should verify that the equipment:





If a transformer is to be commissioned at the same time as a pole-top capacitor bank, refer to the instructions for commissioning this item of equipment as well as the appropriate switching operations in the switching program.


4.5.3 Equipment pre-handover status Capacitor banks must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.



1. Check and comprehend the capacitor bank handover certificate.

2. Check that the SPIDAWeb updater has generated the SPIDAWeb pick ID numbers for each item in accordance with the as-constructed drawings.

3. Record the address, work package number and SPIDAWeb pick ID.

4. Check that the construction complies with the distribution construction standards.

5. Check that all the earth connections (including capacitor and control) are properly connected and bonded to earth.

6. Consult the pole-top capacitor bank manufacturer’s operating and commissioning instruction manual to identify any special items that are required to be checked or examined before the equipment is placed in service.

7. Record the capacitor bank serial number, rating and stock code number in the data sheet.


9. Check that the capacitors have been correctly installed and that the electrical connections have been re-tightened.

10. Install dropout fuses according to the design requirements. DO NOT ENERGISE. All dropout fuses and capacitor bank switches must be open.

11. Check that the operating arm on the vacuum switches is OFF (i.e. the switches are in the down position).

12. Check that the settings of the protection circuits are correct.

13. Lock control unit doors with two Western Power approved padlocks.

14. Ensure that the control settings are configured to the desired set parameters. (Refer to the Distribution Commissioning Work Instruction for the control setting and testing.)


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4.5.5 Commissioning of the equipment 1. Carry out the commissioning in accordance with the switching program.

2. Ensure the feeder reclosers are set to MANUAL during the energisation period.

3. Ensure all switches operate correctly.

4. Where automation is provided, ensure that the SCADA labelling and operation is true and correct.

5. Ensure all equipment is in its final circuit condition and all normally open points are set to their designated position.

6. Conduct a polarity test on the controller supply using a voltmeter or multi-tester to verify its safe operation.

7. For testing purposes, use an effective earthed reference point spaced more than 2 meters from any electrically conductive object embedded in the ground.

8. Ensure all equipment is locked, signposted and protected from unauthorised entry.





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4.5 – POLE-MOUNTED CAPACITOR BANK

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of pole-mounted capacitor banks before energisation. Note: The following tests must be carried out after installation and before the bank is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ___________________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: _______________________________

1. PRE-INSTALLATION CHECK Earth resistance test and nameplate


Ensure the capacitor bank rating matches the system voltage.


Structure


Check that all the earth connections (including the capacitor and control) are properly connected and are bonded to earth.

Ensure that the insulated caps have been fitted to all the high voltage (HV) connections.

Check that the anti-climbing guards and danger plate are fitted and correctly numbered.

Capacitor

Check the capacitor for damage, tank, bushings, cracks in boots and excessive dirt. Confirm that all electrical connections are tight. Check that all the HV lightning arresters have bird caps fitted and are tensioned correctly.

HV dropout fuse

Confirm that the fuse element size corresponds to the table below.

kVAR

kV 11 22 33

500 40 20 16

1,000 80 40 31.5

Control unit

Confirm all secondary connections are as per the wiring diagram.

Distribution TransformerH1 H2

TripCloseNeutralLine

Sw2

BlackGreen

White

Junction Box

Controller

AC Line

Ground

AC NeutralCS Neutral

CS HotOpenClose

As perSW1

As perSW1

Sw3Sw1

Ora

nge

Gra

y

Blue

Pink

Integrated Voltage

Transformeror

DCWI





1. DO NOT ENERGISE. All dropout fuses and capacitor bank switches must be open. 2. Lock control unit doors with two (NMK2) Western Power approved padlocks. 3. Attach an “Out Of Service (Warning)” tag to the padlock on the front of the control cabinet. 4. Inform NOCC of the status of the capacitor. 5. Ensure the work area is tidy with no hazards to the public. 6. Hand over responsibility to Field Services (Primary Response Group) for the commissioning of alarms and remote controls.

4. CONTROL SETTING AND TESTING

Controller power supply setting instructions

Integrated Voltage Transformer Supplied Distribution Transformer Supplied Check that all the dropout fuses and capacitor bank switches are open. Disconnect the L and N from the voltage transformer at the junction box and leave it safe. N/A

Ensure SCADA CONTROL is set to LOCAL. Ensure OPERATION MODE is set to MANUAL. Connect the interface between the controller and the control cable.

Supply the controller (through an interface) from a reliable 240 V source.

If a normal 240 V supply is unavailable, use a minimum 3 kVA generator. Conduct a polarity test on the 240 V supply.


Press the switch on the interface to power up the controller.

Close the distribution transformer dropout fuses to power up the controller, and conduct a polarity test on the 240 V supply.

Controller setting and testing instructions

Non-telemetered Telemetered IntelliCap Plus Controller

Upload the settings (.cfg) to the controller and adjust the date and time. Temporarily change the Max Daily Ops to 1.

Press the CLOSE button/toggle switch.

Change SCADA CONTROL to REMOTE.

Request an integrity scan to wake up the communications. Operate SCADA CONTROL REMOTE/LOCAL (Supervisory Control) to test the uncontrolled change of state (UCOS) alarm. Leave in REMOTE. Operate OPERATION MODE AUTO/MANUAL to test the UCOS alarm. Leave in MANUAL. Disconnect and reconnect the load fuse to test the UCOS alarm. Request a remote close command to test the remote control function.

Check if the CLOSE LED/Lamp is blinking continuously and the manual operation delay (30 s) is activated.

Wait for the capacitor bank to close.

DCWI


Controller setting and testing instructions (continued)

Press the OPEN button/toggle switch. Request a remote open command to test the remote control function.

The OPEN LED/Lamp blinks continuously and the manual operation delay (30 s) is activated. Note: There is a 5 min delay (Reclose Block) between consecutive close commands. This allows time for the capacitors to discharge. Any close commands within this period are denied by the controller.

Wait for the capacitor bank switches to open.

Check that the Reclose Block and the Max Daily Cycle are active. Change SCADA CONTROL to LOCAL.

Change the Max Daily Ops back to its original setting.

Ensure that SCADA CONTROL is set to LOCAL.

Ensure that OPERATION MODE is set to AUTO.

5. PUTTING THE CAPACITOR INTO SERVICE

Controller setting and testing instructions

Integrated Voltage Transformer Supplied Distribution Transformer Supplied

Press the switch on the controller interface to OFF. Remove the controller interface and reconnect the control cable to the controller. Reconnect the L and N in the junction box and close the capacitor bank dropout fuses as per the switching program. Conduct a polarity test on the 240 V supply.

Close the capacitor bank dropout fuse as per the switching program and conduct a polarity test on the 240 V supply.

Set the controller to AUTO and either REMOTE (if there is a SCADA/comms link) to East Perth Control Centre (EPCC) or LOCAL (if there is no SCADA/comms link) to the EPCC.

Do not manually close the capacitor bank onto the network.

After seven days in service, download a full report (.csv) from the controller. Save the file to the relevant document management file and notify Network Planning.


6. HANDOVER OF RESPONSIBILITY I hereby certify that items 4 to 5 have been completed with satisfactory results and transfer control to the network operating authority.



1. Ensure the work area is left tidy with no hazards to the public. 2. Hand over responsibility to the operating authority. 3. Return this form to the project file folder and file as a record of commissioning. 4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager


DCWI


4.6 HV Single-phase underground rural supply fuse switch 4.6.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of single-phase underground rural supply fuse switches before energisation. The testing should verify that the equipment:




Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual and the Switching Operators manuals.

4.6.2 Related Information None.

4.6.3 Equipment pre-handover status A single-phase underground rural supply fuse switch must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.




2. Check that the SPIDAWeb pick ID/pole numbers for each item are in accordance with the as-constructed drawings.








DCWI



4.6 – HV SINGLE-PHASE UNDERGROUND RURAL SUPPLY FUSE SWITCH

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of single-phase underground rural supply fuse switches before energisation. Note: The following test must be carried out after installation and before the switch is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: ________________________________________________________ Work Package No.:__________ SPIDAWeb Pick ID: ___________ Fuse Size.:________A

1. PRE-INSTALLATION CHECK

Earth resistance test and nameplate


Ensure that the switch rating matches the system voltage.

Cable testing Ensure that the cable Distribution Commissioning Work Instruction (DM# 1641396 HV XLPE cables) has been completed with acceptable results.

2. INSTALLATION CHECK Install a switch with blades and contacts de-energised and operate for a functional test.

Operate the switch and ensure that it operates ON and OFF smoothly and that contacts are fully seated in the ON position and check fuse size. (Adjust if necessary.)

Construction checks

Check that the construction complies with the distribution construction, labelling standards and applicable design drawings.

Check the cables are properly connected and terminated.

Ensure that the switch body is properly earthed and secured.

INSULATION RESISTANCE TEST

3. ENERGISATION

Energisation

Ensure the switch is in the correct position (ON or OFF) as per the switching program and network configuration.

Fit a perspex cover and lock the unit door with a Western Power approved padlock.

Energise the switch from the remote end of the incoming cable.


Use a 5 kV insulation resistance tester for 1 minute Values greater than 5000 MΩ are acceptable.

Test Connection Expected Values Test Results

Phase – Earth (In comer) > 5,000 MΩ MΩ

Phase – Frame ( In comer) > 5,000 MΩ MΩ

Phase – Earth (Out comer > 5,000 MΩ MΩ

Phase – Frame ( Out comer) > 5,000 MΩ MΩ

DCWI








DCWI


4.7 Voltage regulator (closed Delta connection) 4.7.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of closed Delta connected voltage regulators before energisation.

Use the instruction in conjunction with the Electrical System Safety Rules, the Work Practice Manual, the Switching Operators manuals and the voltage regulator manufacturer’s operating and commissioning manual.


4.7.3 Equipment pre-handover status Voltage regulators (with a closed Delta connection) must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.





4. Ensure that the control settings are configured to the desired parameters.


4.7.5 Test criteria

4.7.5.1 Insulation resistance test Use a 5 kV insulation resistance tester and measure the resistance value after 1 minute of testing (R >1 GΩ).


4.7.6 Commissioning of the equipment 1. To ensure that the voltage regulators function properly and automatically, test each voltage regulator control as

follows:

a. With the regulator bypass switch in a closed position and the S, L and SL switches in an open position, turn off the power switch and the control switch inside the control box, if available. Check and ensure that the potential switch (V1 and V6, if fitted, for Cooper; DS1 for GE) is in the closed position. Close the current transformer bypass (C switch for Cooper; DS2 for GE). This is to ensure that the control does not respond abruptly when energised.

b. With the L switch left in the open position, close the S and SL switch in order to energise the internal potential transformer to supply the control. Phase out if necessary.

c. Turn the power switch to INTERNAL and the control switch to MANUAL in order to enable the control. Operate the RAISE/LOWER button and observe if the regulator responds to the controls. A sound from the internal motor together with the clicking of the taps should be heard whenever the regulator changes tap. The tap position indicator together with the display in the control should indicate the same tap position and also indicate the change in tap during this operation. This test is to ensure that the tap changer responds to the control.

d. Return the tap changer to the neutral tap position by operating the RAISE/LOWER button. This can be verified by checking the tap position indicator and ensuring that the neutral lamp/LED lights up.

e. Upload the settings to the control.

f. Measure the voltages at the voltmeter terminals or meter out and check that the measured voltage matches that of the voltage displayed in the panel. This is to ensure that the voltage display is correct.

DCWI


g. Put the display into the band centre (Depress 1, SET voltage for Cooper; press the UP or DOWN and ENTER button for GE). Set the control to MANUAL, then operate the RAISE button enough steps to put the voltage out of bandwidth. Set the control switch to AUTO and wait for the 30 second time delay. The control should cause the regulator to step down to the top bandwidth. This test is to ensure that the regulator automatically works when the voltage is above the bandwidth.

h. Repeat the previous step, this time lowering the voltage below the bandwidth, by operating the LOWER button, to test if the regulator automatically works when the voltage is below the bandwidth.

i. Set the voltage regulator to neutral by setting the control to MANUAL and operating the RAISE/LOWER button as required, and ensuring that the neutral lamp/LED lights up. Initially set the regulator control current transformer (CT)/voltage transformer (VT) configuration to Delta Lead for Cooper units or +30° for GE units. This is to prepare the voltage regulator for commissioning.

2. With all voltage regulator controls set to neutral and at manual operation, carry out the switching program by closing all the L switches and opening the regulator bypass; then open the current transformer bypass (C switch for Cooper; DS2 for GE).

3. After 30 seconds, compare the power factor reading on the control display with NOCC’s power factor reading of the feeder of the installed voltage regulator. If checking the power factor reading with NOCC is not possible, check that the power factor reading on the control display is within acceptable limits (0.50 to 0.99). If the power factor reading is similar to NOCC’s power factor reading or is within acceptable limits (if it could not be verified with NOCC), set the control to AUTO and proceed to the handover of responsibility. The units have been successfully commissioned.

4. If the power factor reading is not similar to NOCC’s power factor reading or is not within acceptable limits, set the regulator control CT/VT configuration to Delta Lag for Cooper units or -30° (+330°) for GE units. After 30 seconds, recheck NOCC’s power factor reading of the feeder and compare it with the power factor reading on the control display or recheck that the power factor reading on the control display is within acceptable limits. If the power factor reading is similar to NOCC’s power factor reading or is within acceptable limits, set the control to AUTO and proceed to the handover of responsibility. The units have been successfully commissioned.

5. If the power factor reading is still dissimilar to NOCC’s or is not within acceptable limits, DO NOT commission the units. Leave the regulators in the neutral tap position and manual operations, close all regulator bypass switches, open L, SL and S in that order, and report the problem to your formal leader for further investigation with the supplier or manufacturer.





DCWI



4.7 – VOLTAGE REGULATOR (CLOSED DELTA CONNECTION)

Purpose: This instruction covers the testing and commissioning of all replacements and new installations of closed delta connected voltage regulators before energisation. Note: The following tests must be carried out after installation and before the regulator is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: __________________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: ______________________________




Ensure that the voltage regulator rating matches the system voltage.


Use a 5 kV insulation resistance tester. Measure the resistance after 1 minute of testing.

Short together the S, SL, and L bushings using fuse wire or shorting cables/clamps. Connect the insulation resistance tester between the shorted bushings and earth. The regulator must be in the neutral tap position.

Test Results Acceptable Results

VR 1 __________________MΩ

VR 2 __________________MΩ

VR 3 __________________MΩ

>1,000 MΩ/1 GΩ


Structure


Check the regulator for damage, cracks, oil leaks, bushings and excessive dirt.

Ensure that the earthing system is complete and undamaged.

Ensure that insulated caps or extension skirts are fitted (if required).


Nameplate plug indicator connection

Check that the plug indicator is set at the voltage at which the voltage regulator has been connected for each phase.

R

W

B

Example: Cooper TAP IN

USE

LOAD VOLTS

CONTROL WDG TAP

(TANK)

INTERNAL PT RATIO

RCT TAP (CONTROL)

TEST TERMINAL VOLTAGE

OVERALL POTENTIAL RATIO

Ο 23,000 E1/P1 183.3 : 1 120 125.5 183.3 : 1

Ο 22,000 E1/P1 183.3 : 1 120 120 183.3 : 1

Ο 20,000 E1/P1 183.3 : 1 110 119 168 : 1

Ο 19,100 E1/P1 183.3 : 1 104 120 159.2 : 1

Ο 15,000 E2/P2 119.8 : 1 120 125.5 119.8 : 1

Ο 12,700 E2/P2 119.8 : 1 104 122.5 103.9 : 1

Ο 11,000 E3/P3 91.6 : 1 120 120 91.6 : 1

Ο 10,000 E3/P3 91.6 : 1 110 119 84.1 : 1

DCWI


Nameplate plug indicator connection (continued)

Example: GE

POTENTIAL AND CONTROL POWER

LOAD TERMINAL VOLTS

POTENTIAL RATIO

CONTROL VOLTS

CONNECT NN22 to NN9 to F1-2 to

Ο 22,000 183.3 : 1 120 NN21 T4-2 T4-3

Ο 19,100 159.2 : 1 120 NN21 T4-2 T4-1

Ο 12,700 105.8 : 1 120 NN20 T4-2 T4-4

Ο 11,000 91.6 : 1 120 NN20 T4- 2 T4-3

Note: For the GE controller, ensure that the connection of the power circuit board, which is located inside the control cabinet in the upper RHS corner, is wired according to the regulator nameplate. Example: For 22,000 V, the power circuit board is connected NN22 to NN21, NN9 to T4-2 and F1-2 to T4-3.

Confirm that the regulator is connected as per the diagram.

PTSD/BYPASS SWITCH

SOU

RC

E

LOAD

LIGHTNING(SHUNT)

ARRESTER

LIGHTNING (SERIES)ARRESTERNOTE: Cooper VoltageRegulators Only Three Regulators, 3-phase, closed delta connected

RWB

S S S

L

SL

L

SL

L

SL




1. DO NOT ENERGISE THE REGULATOR. All the high voltage disconnectors connecting the regulator to the high voltage line must be open.

2. The PTSD/BYPASS/ring main switch position must be set as per the network configuration. 3. Control unit doors must be locked with two (NMK2) Western Power approved padlocks. 4. Attach an “Out Of Service (Warning)” tag to the padlock on the front of the control cabinet. 5. Inform NOCC of the status of the voltage regulator. 6. Ensure the work area is left tidy with no hazards to the public. 7. Hand over responsibility to Field Services (Primary Response Group) for commissioning.

DCWI




Select the power switch to OFF and the control switch to OFF.

Cooper GE The knife switches on the back panel should be set with V1 (potential switch) and V6 (differential voltage if fitted) closed and C (shorting switch) closed. V6 may be fitted to CL5A on earlier controllers.

The knife switches on the back panel should be set with DS1 (potential switch) closed and DS2 (CT shorting switch) closed.

Close the SL (source load) and the S (source) disconnectors.

Set the power switch to INTERNAL and the control switch to MANUAL.

Operate the RAISE/LOWER switch to bring the regulator tap position indicator to the neutral position (zero) if required.

The controller neutral lamp/LED is lit while in the neutral position.

Check that the tap position indicator and the lamp/LED are synchronised before continuing.

Upload the settings to the control.

Cooper GE Measure the voltage at the voltmeter terminals to check if the measured voltage closely matches that of the voltage displayed on the panel.

Measure the voltage at the meter out terminals to check if the measured voltage closely matches that of the voltage displayed on the panel.

Cooper GE

Depress 1, SET VOLTAGE (band centre) keypad.

Using the UP, DOWN and ENTER buttons, press buttons until the display indicates the band centre.

Set the control switch to the MANUAL position. Operate the RAISE/LOWER switch to activate a raise operation. Allow the tap changer to operate for enough steps to take voltage out of the bandwidth. Set the control switch to the AUTO position. After a time delay (30 seconds) the control should cause the regulator to step down to the top bandwidth edge. Note: If bi-directional (Cooper) is set, it must be disabled (zero) before the AUTO setting can be used. Example: A setting of 120 V (band centre) and 2 V bandwidth = 121 V top bandwidth edge should be shown in the display. When the voltage is in band and the tap changing has stopped, set the control switch to MANUAL.

Operate the RAISE/LOWER switch to activate a lower operation.

Allow the tap changer to operate for enough steps to take the voltage out of the bandwidth. Set the control switch to the AUTO position. After a time delay (30 seconds), the control should cause the regulator to step up to the lower bandwidth edge. Example: A setting of 120 V (band centre) and 2 V bandwidth = 119 V lower band edge should be shown in the display. Set the control switch to the MANUAL position.

Operate the RAISE/LOWER switch and set the regulator to the neutral position. Reset the drag hands to zero.

Phase out and then close the L (load) disconnecting switch.

Open the bypass switch.

Cooper GE

Set each regulator control configuration to Delta Lead.

Set the current transformer (CT)/voltage transformer (VT) phasing angle setting on each control to +30°.

Open the CT shorting switch C. Open the CT shorting switch DS2.

DCWI


Controller power supply setting instructions (continued)

After 30 seconds, check if the power factor reading in each control unit is within the acceptable limits of 0.50 to 0.99; and, if possible, verify with NOCC that the control’s power factor reading is similar to the feeder’s power factor reading. If yes, set the control switch to the AUTO position and proceed to item 6 (HANDOVER OF RESPONSIBILITY).

If the power factor reading is not within acceptable limits or not similar to the feeder’s power factor as verified with NOCC, set each regulator control to Delta Lag for Cooper or set the CT/VT phasing angle setting to -30° (+330°) for GE units. Recheck the power factor readings after 1 minute and, if the readings are within acceptable limits or are similar to the feeder’s power factor readings, set the control switch to the AUTO position and proceed to item 6 (HANDOVER OF RESPONSIBILITY).

If the power factor reading is still not within acceptable limits or not similar to the feeder reading, ensure that the voltage regulator is in a neutral position, close the bypass switch, open the S and L switch and report it to your formal leader for further investigation.

6. HANDOVER OF RESPONSIBILITY I hereby certify that item 5 has been completed with the above results and transfer control to the network operating authority.





DCWI


4.8 Voltage regulator (Star connection) 4.8.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of Star connected voltage regulators before energisation.


4.8.2 Related Information None.

4.8.3 Equipment pre-handover status A voltage regulator (with Star connection) must be installed in accordance with the appropriate guidelines in Distribution Construction Standards Handbook HB01 and applicable design drawings.





4. Ensure that the control settings are configured to the desired parameters.


4.8.5 Test criteria

4.8.5.1 Insulation resistance test Use a 5 kV insulation resistance tester and measure the resistance after 1 minute of testing (R >1 MΩ).


4.8.6 Commissioning of the equipment 1. To ensure that the voltage regulators function properly and automatically, test each voltage regulator control as

follows:

a. With the regulator bypass switch in a closed position and the S and L switch in an open position, turn off the power switch and the control switch inside the control box, if available. Ensure that the potential switch (V1 and V6, if fitted, for Cooper; or DS1 for GE) are in the closed position. Close the current transformer bypass (C switch for Cooper; DS2 for GE). This ensures that the control does not respond abruptly when energised.

b. With the L switch left in the open position, close the S switch in order to energise the internal potential transformer to supply the control. Phase out if necessary.

c. Turn the power switch to INTERNAL and the control switch to MANUAL in order to enable the control. Operate the RAISE/LOWER button and observe if the regulator responds to the controls. A sound from the internal motor together with the clicking of the taps should be heard whenever the regulator changes tap. The tap position indicator together with the display in the control should indicate the same tap position and also indicate the change in tap during this operation. This test ensures that the tap changer responds to the control.

d. Return the tap changer to the neutral tap position by operating the RAISE/LOWER button. This can be verified by checking the tap position indicator and ensuring that the neutral lamp/LED lights up.

e. Upload the settings to the control.

f. Measure the voltages at the voltmeter terminals or meter out and check that the measured voltage matches that of the voltage displayed in the panel. This ensures that the voltage display is correct.

DCWI


g. Put the display into band centre (Depress 1, SET VOLTAGE for Cooper; press the UP or DOWN and ENTER button for GE). Set the control to MANUAL, then operate the RAISE button enough steps to put the voltage out of bandwidth. Set the control switch to AUTO and wait for the 30 second time delay. The control should cause the regulator to step down to the top bandwidth. This test ensures that the regulator works automatically when the voltage is above the bandwidth.

h. Repeat the previous step, this time lowering the voltage below the bandwidth, by operating the LOWER button, to test if the regulator works automatically when the voltage is below the bandwidth.

i. Set the voltage regulator to neutral by setting the control to MANUAL and operating the RAISE/LOWER button as required, and ensuring that the neutral lamp/LED lights up. This prepares the voltage regulator for commissioning.

2. Carry out the switching program by closing the L switch and opening the regulator bypass switches. 3. Open the current transformer shorting links (C for Cooper and DS2 for GE). Set the control to AUTO and

proceed to the handover of responsibility. The voltage regulator has been successfully commissioned.

4. Ensure the work area is left tidy with no hazards to the public. 5. Hand over responsibility to the operating authority.



DCWI



4.8 – VOLTAGE REGULATOR (STAR CONNECTION)

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of Star connected voltage regulators before energisation. Note: The following tests must be carried out after installation and before the regulator is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: ________________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: _____________________________




Ensure the voltage regulator rating matches the system voltage.


Use a 5 kV insulation resistance tester.

Measure the resistance after 1 minute of testing.

Short together the S, SL, and L bushings using fuse wire or shorting cables/clamps.

Connect the insulation resistance tester between the shorted bushings and earth.

The regulator must be in a neutral tap position.

Test Results Acceptable Results

VR 1 __________________MΩ

VR 2 __________________MΩ

VR 3 __________________MΩ

>1,000 MΩ/1 GΩ


Structure


Check the regulator for damage, cracks, oil leaks, bushings and excessive dirt.

Ensure that the earthing system is complete and undamaged.

Ensure that insulated caps or extension skirts are fitted (if required).

Nameplate plug indicator connection

Check that the plug indicator is set at the voltage at which the voltage regulator has been connected for each phase.

EXAMPLE: COOPER

R

W

B

TAP IN USE

LOAD VOLTS

CONTROL WDG TAP

(TANK)

INTERNAL PT RATIO

RCT TAP (CONTROL)

TEST TERMINAL VOLTAGE

OVERALL POTENTIAL

RATIO Ο 23,000 E1/P1 183.3 : 1 120 125.5 183.3 : 1

Ο 22,000 E1/P1 183.3 : 1 120 120 183.3 : 1

Ο 20,000 E1/P1 183.3 : 1 110 119 168 : 1

Ο 19,100 E1/P1 183.3 : 1 104 120 159.2 : 1

Ο 15,000 E2/P2 119.8 : 1 120 125.5 119.8 : 1

Ο 12,700 E2/P2 119.8 : 1 104 122.5 103.9 : 1

Ο 11,000 E3/P3 91.6 : 1 120 120 91.6 : 1

Ο 10,000 E3/P3 91.6 : 1 110 119 84.1 : 1

DCWI


Nameplate plug indicator connection (continued)

EXAMPLE: GE

POTENTIAL AND CONTROL POWER

LOAD TERMINAL VOLTS

POTENTIAL RATIO

CONTROL

VOLTS

CONNECT

NN22 TO NN9 TO F1-2 TO

Ο 22,000 183.3 : 1 120 NN21 T4-2 T4-3

Ο 19,100 159.2 : 1 120 NN21 T4-2 T4-1

Ο 12,700 105.8 : 1 120 NN20 T4-2 T4-4

Ο 11,000 91.6 : 1 120 NN20 T4-2 T4-3

Note: For the GE controller, ensure that the connection of the power circuit board, which is located inside the control cabinet in the upper RHS corner, is wired according to the regulator nameplate.

Example: For 19,100 V, the power circuit board is connected NN22 to NN21, NN9 to T4-2, and F1-2 to T4-1.

Confirm that the regulator is connected as per diagram.

PTSD/BYPASS SWITCH

SOU

RC

E

LOAD

LIGHTNING(SHUNT)

ARRESTER

LIGHTNING (SERIES)ARRESTERNOTE: Cooper VoltageRegulators Only Three Regulators, 3-phase, star connected

RWB

S S S

L

SL

L

SL

L

SL




1. DO NOT ENERGISE THE REGULATOR. All the high voltage disconnectors connecting the regulator to the high voltage line must be open.

2. The PTSD/BYPASS/ring main switch position must be as per the network configuration. 3. The control unit doors must be locked with two (NMK2) Western Power approved padlocks. 4. Attach an “Out Of Service (Warning)” tag to the padlock on the front of the control cabinet. 5. Inform NOCC of the status of the voltage regulator. 6. Ensure the work area is left tidy with no hazards to the public. 7. Hand over responsibility to Field Services (Primary Response Group) for commissioning.

DCWI




Set the power switch to OFF and the control switch to OFF.

Cooper GE

The knife switches on the back panel should be set with V1 (potential switch) and V6 (differential voltage, if fitted) closed and C (shorting switch) closed. V6 may be fitted to CL5A on earlier controllers.

The knife switches on the back panel should be set with DS1 (potential switch) closed and DS2 (CT shorting switch) closed.

Close the S (source) disconnectors.

Set the power switch to INTERNAL and the control switch to MANUAL.

Operate the RAISE/LOWER switch to bring the regulator tap position indicator to the neutral position (zero), if required.

The controller neutral lamp/LED is lit while in the neutral position.

Check that the tap position indicator and the lamp/LED are synchronised before continuing.

Upload the settings to the control.

Cooper GE

Measure the voltage at the voltmeter terminals to check if the measured voltage closely matches that of the voltage displayed on the panel.

Measure the voltage at the meter out terminals to check if the measured voltage closely matches that of the voltage displayed on the panel.

Cooper GE Depress 1, SET VOLTAGE (band centre) keypad.

Press the UP, DOWN and ENTER buttons until the display indicates the band centre.

Set the control switch to MANUAL. Operate the RAISE/LOWER switch to activate a raise operation. Allow the tap changer to operate for enough steps to take voltage out of the bandwidth. Set the control switch to AUTO. After a time delay (30 seconds), the control should cause the regulator to step down to the top bandwidth edge. Note: If bi-directional (Cooper) is set, it must be disabled (zero) before AUTO can be used. Example: A setting of 120 V (band centre) and 2 V bandwidth = 121 V top bandwidth edge should be shown in the display. When the voltage is in band and the tap changing has stopped, set the control switch to MANUAL.

Operate the RAISE/LOWER switch to activate a lower operation.

Allow the tap changer to operate for enough steps to take the voltage out of the bandwidth. Set the control switch to AUTO. After time delay (30 seconds), the control should cause the regulator to step up to the lower bandwidth edge. Example: A setting of 120 V (band centre) and 2 V bandwidth = 119 V lower band edge should be shown in the display. Set the control switch to MANUAL.

Operate the RAISE/LOWER switch and set the regulator to the neutral position. Reset the drag hands to zero.

Phase out and then close the L (load) disconnecting switch.

Open the bypass switch.

Cooper GE Open the CT shorting switch C and return the control switch to the AUTO position.

Open the CT shorting switch DS2 and return the control switch to the AUTO position.

DCWI


6. HANDOVER OF RESPONSIBILITY I hereby certify that item 5 has been completed with the above results and transfer control to the network operating authority.





DCWI


4.9 HV ring main switchgear 4.9.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of HV ring main switchgear. The testing should verify that the equipment:


has been installed in the network correctly.


If a transformer and LV switchgear are to be commissioned at the same time as the ring main switchgear, refer to the instructions for commissioning these items of equipment as well as the appropriate switching operations in the switching program.

4.9.2 Related information

Australian Standard AS 2067–2008: Substations and High Voltage Installations Exceeding 1 kV AC. Published by Standards Australia.

AS 62271.1–2012: High Voltage Switchgear and Control Gear – Common Specifications.


4.9.3.1 HV ring main switchgear

The ring main switchgear must be installed in accordance with the appropriate guidelines in the Underground Distribution Systems Policy and Installations Options Manual and applicable design drawings.

Where extensible switchgear has been assembled on site to form a composite type switchboard, then, prior to terminating the cables, the installer must test it to Australian Standards AS 2067 and AS 62271.1–2012.

On completion of a HV switchgear testing schedule, the installer must issue an earthing testing schedule and handover certificate to the project manager.

4.9.3.2 HV underground cables The cables must be installed, terminated and jointed in accordance with the appropriate standards and guidelines and as detailed in the Underground Distribution Systems Policy and Installations Options Manual.

As a minimum, the installer must affix temporary labels to all switches stating the destinations of all cables. (More permanent labels may be fitted at this time.)

Sheath and insulation tests must be carried out and the results recorded. On completion, the installer must issue a HV cable testing schedule and a handover certificate to the project manager. The equipment as-constructed drawings must be prepared and issued prior to the project manager accepting and signing off on the handover certificate.


1. Check and comprehend the handover certificate. Note: This should include the switchgear and connecting cable.

2. Check the HV switchgear testing schedules as appropriate.

Note: Non-extensible switchgear does not require additional on-site testing.

3. Check the HV cable testing schedule.

4. Check the earthing testing schedule.

5. Check that the SPIDAWeb pick ID numbers for each item of equipment are in accordance with the as-constructed drawings.

6. Prepare a substation location label and permanent cable destination labels in accordance with Distribution Equipment Labelling – Network Standard NS 05-2000, if not already completed.

DCWI


7. Consult the switchgear manufacturers operating and commissioning instruction manual to identify any items that must be checked before the equipment is placed in service.

Note: Before proceeding, ensure cables on either side of the HV switchgear and either side of ring main unit are de-energised and disconnected.

8. Where appropriate, check the gas leakage indication gauge to verify that the switchgear has sufficient service pressure.

9. If a switch disconnector or fuse switch is spare and does not have a cable connected, then check that it is selected to the earth position and that it is appropriately tagged. Spare units must always be set to the earth position.

10. Clean away any dust which may have blown onto the unit during the installation activities.

11. Check that all HV cable terminations are secure and that the correct bailing assemblies are used.

12. Check that any unused bushings are correctly capped with rated parts and bailing fitted.

13. Check that drain wires are fitted to all HV elbow connectors and connected to a cable screen.

Note: This ensures the elbows are safe to touch.

14. Check that the HV cable screens are all solidly and separately connected and bolted to the HV earth bar.

15. Ensure the integrity of the earthing system.

16. Ensure that the switch disconnectors are in the OFF position and that the fuse switches are off and in the EARTH position.

17. If the ring main unit is in a kiosk, check that the kiosk body is earthed correctly, including the kiosk doors.


19. Install high rupturing capacity fuses according to the design and ensure that the striker pin faces the striker bar.

Note: Clean the inside of the fuse compartment of all visible dirt.

20. Switch the transformer fuse switch back to the OFF position.


4.9.5 Test criteria

4.9.5.1 Insulation resistance test The purpose of this test is to verify the integrity of the busbar with respect to earth.

Before connecting any cable, use a 5 kV insulation resistance tester for 1 minute and record the value. The insulation resistance test value must be greater than 5,000 MΩ/5 GΩ.

4.9.5.2 Continuity test The purpose of this test is to verify the connection between the same phase.

Test between all bushings of the same phase using a 1 kV insulation resistance tester to verify continuity (R = 0 MΩ).

Close all earthing switches and open all load-carrying switches. Connect an insulation resistance tester between all bushings of the same phase and earth bar to verify continuity.


4.9.6 Commissioning of the equipment 1. Carry out the commissioning program according to the Switching Operators manuals and the switching

program.

2. Operate all switch mechanisms for proper functioning. Test the earth switches. Test all interlock mechanisms to confirm correct functioning and test the interlock mechanism’s inhibit function for any improper operational actions.

Note: Interlocks have only been tested to confirm that an operational action is allowed when such an action is permissible. The interlock mechanism must also be tested to confirm that an operational action is positively prevented when that action should never occur.

DCWI


3. Phase out the HV ring main switchgear in accordance with the NOCC switching program.






DCWI



4.9 – HIGH VOLTAGE RING MAIN SWITCHGEAR Purpose: This instruction covers the testing and commissioning of all replacements or new installations of high voltage (HV) ring main switchgear. Note: The following tests and checks must be carried out after installation and before the switchgear is put into service. Ensure the HV cables on either side of the ring main units are de-energised and disconnected before carrying out this commissioning exercise. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened. Address/Pole No.: _________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: ______________________

1. HV METERING UNIT (IF APPLICABLE): VISUAL INSPECTION AND SAFETY CHECK Indicate whether the HV metering unit is an indoor unit or an outdoor unit. Indoor unit Outdoor unit

Check that the voltage of the extensible metering unit is correct for the application.

Check that the HV metering unit has a HV test lab test certificate or tags for the current transformers and voltage transformers.

Ensure that the HV test lab accuracy test certificate serial number matches the extensible metering unit serial number.

Ensure that the metering officer has completed the Distribution Commissioning Work Instruction for HV metering units.

Record the name of the metering officer. ______________________________________________

2. HV RING MAIN SWITCHGEAR: VISUAL INSPECTION AND SAFETY CHECK HV switchgear serial number: ___________________

Check that the HV switchgear matches the drawings provided.

Check that the switchgear is numbered and labelled correctly.

Check that the gas pressure is sufficient and record the value (if applicable). ____________ MPA

Check that the HV ring main switchgear is de-energised before testing. (Cables disconnected.)

Check that the earthing has been completed as per the design drawings (Refer to clauses 9 and 8.5 of AS 2067:2008.), and that the grading ring is installed and connected to the HV earth bar.

Verify the minimum heights and protective barrier clearances.

Conduct functional tests of electrical equipment and parts of the installation; verify the settings, circuitry and programming; verify the operation and configuration by measurement or testing of protective, monitoring, measuring and control devices.

Verify that the fire ratings for the building and enclosures are correct and that the emergency exits are operational.

Verify the minimum clearances between the live parts and earth.

Inspect the markings, safety signs and safety devices.

3. INSULATION RESISTANCE TEST The purpose of this test is to verify the integrity of the busbar with respect to earth.

This test must be carried out before any cables are connected. Open all earthing switches and close all load-carrying switches. Conduct an insulation resistance test of the busbar with a 5 kV insulation resistance tester for 1 minute and record the value. The value must be greater than 5,000 MΩ/5 GΩ.


Red - white > 5,000 MΩ/5 GΩ Ω

White - blue > 5,000 MΩ/5 GΩ Ω

Blue - red > 5,000 MΩ/5 GΩ Ω

Red - earth > 5,000 MΩ/5 GΩ Ω

White - earth > 5,000 MΩ/5 GΩ Ω

Blue - earth > 5,000 MΩ/5 GΩ Ω

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4. Continuity test The purpose of this test is to verify the connection between the same phase.

Connect an insulation resistance tester set at 1 kV and test between all bushings of the same phase to prove continuity.

Test Connection Expected Values Test Results

Red - red 0 MΩ MΩ Pass

Fail White - white 0 MΩ MΩ Blue - blue 0 MΩ MΩ

Close all earthing switches and open all load-carrying switches. Connect an insulation resistance tester between all bushings of the same phase and earth bar to prove continuity.

Red - earth 0 MΩ MΩ Pass

Fail White - earth 0 MΩ MΩ

Blue - earth 0 MΩ MΩ

5. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1–4 I hereby certify that item 1 to 4 has been completed with the above results and transfer control to the project manager.

Testing officer: ____________________________________________________ NAC #: ________________________


6. CABLE TERMINATION AND OTHER CHECKS Check that all the HV cable terminations are secure and that the correct bailing assemblies are used.

Check that all the HV cable terminations are tightened to the required manufacturer standard.

Check that the drain wires are fitted to all HV elbow connectors and are connected to the cable screen.

Check that the HV cable screens are all solidly and separately connected and bolted to the HV earth bar.

Ensure that the 25 mm clearance between the cable screens and the cable support brackets is maintained. (Refer to drawing number DSM– 8– 07.)

Check that no HV cables are exposed. Backfill if necessary.

If the ring main unit is in a kiosk, check that the kiosk body is earthed correctly, including the kiosk doors.

Ensure that all load-carrying switches are OFF, that their earth switches are ON, and that padlocks and danger labels are fitted.

Ensure the site is safe and barricaded where necessary, with no hazards to personnel or the public.

For Schneider RM6 ring main switchgear, check the following: • black bolts on the top edge of all

switch disconnector panels • interlocking pin and metal tab • chassis correctly installed • short lintel bars.

For more information, refer to DM# 8404483.

Check that the two black bolts located on the top edge of all switch disconnector panels are installed and tightened.

Check the interlocking pin and metal tab located on the top edge of switch disconnector door panels and on the inner edge of the fuse cover top panel. Ensure they are not bent and are firmly attached to the panels.

Ensure that the chassis of the RM6 ring main unit is mounted on a flat, even surface and is not distorted.

Check that the short lintel bars located at the front bottom of the RM6 cable compartments are installed and bolted down. Align the front lintel bars and tighten the mounting bolts so that the door panels fit the cable compartment door frames properly.

7. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEM 6

I hereby certify that item 6 has been completed with the above results and transfer control to the project manager.



DCWI


8. COMMISSIONING AND ENERGISATION

Ensure that the high voltage cable testing schedule is available and that the results are acceptable.

Ensure that the earthing system test result is available and that the results are acceptable. Phase out the HV ring main switchgear in accordance with the switching program. Record the value.

Ω

Ensure that the inside of the fuse compartment is clean and install the HV high rupturing capacity fuses according to the fuse chart size. Ensure that the striker pin faces the striker bar.

Record the switching program number: _____________

The following checks need to be completed in conjunction with the appropriate steps in the switching program (where applicable). Check that the neon light is connected to the correct phase by measuring the voltage at the test points. Take one cubicle as a reference and test the red phase of that cubicle against the red phase and other phases of the other cubicle. Red to red should return minimum volts, and other phases should have a maximum voltage. Repeat this procedure with the other phases.

Connection Connection Connection

R1 - R2 Pass

Fail W1 - R2

Pass

Fail B1 - R2

Pass

Fail

R1 - W2 Pass

Fail W1 - W2

Pass

Fail B1 - W2

Pass

Fail

R1 - B2 Pass

Fail W1 - B2 Pass

Fail B1 - B2 Pass

Fail

Ensure that all equipment is in its final circuit conditions as per the switching program.

Ensure that all equipment is locked, numbered and labelled correctly, and secure from unauthorised entry.

The switching operator must contact NOCC and ensure that the switchgear labels match the ENMAC or PowerOn Fusion diagrams.

Note: Any changes to the original design must be marked, documented and stamped “As Constructed”.

9. HANDOVER OF RESPONSIBILITY I hereby certify that item 8 has been completed with satisfactory results and transfer control to the network operating authority.





DCWI


4.10 LV kiosk 4.10.1 Purpose This instruction provides guidelines for the commissioning of LV kiosk. The testing should verify that the equipment:


has been installed in the network correctly.


If a transformer and LV switchgear are to be commissioned at the same time as the ring main switchgear, refer to the instructions for commissioning these items of equipment as well as the appropriate switching operations in the switching program.

4.10.2 Scope This instruction is required to be followed for all LV switchgear that is to be connected to Western Power’s SWIS distribution network.

4.10.3 References Australian Standard AS 3000–2007: Electrical Installations (known as the Australian/New Zealand Wiring Rules).

4.10.4 Responsible persons The project manager or officer in charge is responsible for performing the testing in accordance with this instruction.

The tester in charge is responsible for carrying out all necessary inspections and tests to verify that the LV switchgear is suitable for operational service in accordance with this instruction and for recording all test results and additional comments where relevant.

4.10.5 Equipment pre-handover status LV kiosk

The LV kiosk must be installed in accordance with the appropriate guidelines in the Underground Distribution Systems Policy and Installations Options Manual and applicable design drawings.

On completion, the installer must issue a handover certificate to the project manager.

4.10.6 LV underground cables The cables must be installed, terminated and jointed in accordance with the appropriate standards and guidelines as detailed in the Underground Distribution Systems Policy and Installations Options Manual.

As minimum, the installer must affix temporary labels to all relevant network equipment such as fuse disconnector units stating the destinations of all cables.

Insulation, continuity and phase-out tests must be carried out and the results recorded.

On completion, the installer must issue an LV cable testing schedule, an LV continuity and phasing schedule, an earthing test schedule and a handover certificate to the project manager.



Note: This should include the cables and switchgear.

2. Check the LV cable testing schedules.



5. If a fuse disconnector is spare and does not have a cable connected then check that it is appropriately tagged.

6. Ensure that all conditions mentioned in the distribution transformer pre-commissioning requirements are met.

DCWI


7. Check that the enclosure is satisfactory for the environment at the location of installation.

8. Check that the electrical equipment complies with relevant designs and drawings.

9. Check that the voltage rating of electrical equipment is suitable for the nominal supply voltage.

10. Check that each item of electrical equipment is suitable for the design current loadings and current protection devices.

11. Check for protection against indirect contact by way of arrangements, barriers or screens.

12. Check that minimum clearances and creepage distances are maintained.

13. Check the mechanical operation of all switches, fuse holders and fuse ways.

14. Check that all electrical equipment is labelled and identified in accordance with relevant drawings.

The following test and checks must be carried out on new installations of LV kiosks. This is the minimum testing requirement before energisation.


4.10.8 Test criteria

4.10.8.1 Insulation resistance test Remove the transformer links and verify that the busbars are de-energised before carrying out this test.

Use a 1 kV insulation resistance tester (never use 5 kV insulation tester for this test) between busbars and busbars to neutral.

Test and record the insulation resistance values measured using an insulation resistance tester connected as follows:

Measured values of 10 MΩ or greater are acceptable.

If energisation does not follow immediately after commissioning, the insulation resistance test must be repeated and the values must be measured prior to energisation.



2. If the LV network is to be interconnected with another LV network, phase out at the normally open point; otherwise, phase out as required.






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4.10 – LOW VOLTAGE KIOSK

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of low voltage kiosks before energisation. Note: The following tests and checks must be carried out after installation and before the kiosk is put into service. Note: Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Work Package No.:_________________ Test Site/Location: ___________________________________


Check that the kiosk has been installed as per the distribution construction standards and applicable design drawings.

Check that the kiosk is numbered and labelled correctly (for both fuse bases and covers).

Check that the earthing work has been completed as per the design drawings.

Check that the neutral to earth link is connected and that the connections are completed correctly and secured.


Remove the transformer links and confirm that the busbars are de-energised before carrying out this test. Use a 1 kV insulation resistance tester. Conduct insulation and continuity tests.

Test Connection Minimum Values Test Results

Red phase - white phase >10 MΩ MΩ

White phase - blue phase >10 MΩ MΩ

Blue phase - red phase >10 MΩ MΩ

Red phase - earth >10 MΩ MΩ

White phase - earth >10 MΩ MΩ

Blue phase - earth >10 MΩ MΩ


I hereby certify that items 1 to 2 have been completed with satisfactory results and transfer control to the commissioning officer.



Note: A final insulation test between all phases and neutral/earth on all low voltage circuits must be performed before energising for the first time. This also applies if any connections have been disturbed or replaced.

4. CABLE AND SITE CHECKS

Check that the cable testing schedules are available as per the Distribution Commissioning Work Instruction.

Check that the earthing system test results are available for new installations as per the Distribution Commissioning Work Instruction.

Check that the equipment is locked correctly and secure from unauthorised entry.

5. PHASE-OUT TEST


DCWI



I hereby certify that all items have been completed with satisfactory results and transfer control to the operating authority.

Commissioning officer/project manager: __________________________ NAC #: _____________________




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4.11 NOJA pole-mounted automatic control recloser 4.11.1 Purpose This instruction covers the testing and commissioning of all replacements or new installations of NOJA pole-mounted automatic reclosers before energisation.



4.11.3 Equipment pre-handover status A NOJA pole-mounted automatic recloser must be installed in accordance with the appropriate guidelines in Distribution Construction Handbook HB01 and applicable design drawings.





3. Check the earthing testing schedule. (Refer to the heading earth testing.)

4. Consult the NOJA pole-mounted automatic recloser manufacturer’s operating and commissioning instruction manual to identify any special items that are required to be checked or examined before the equipment is placed in service.

5. Check the maximum separation between the down earth and the recloser umbilical cable.

6. Check that the pole is labelled correctly.

7. Ensure the 240V white thermal plastic sheath is continuous up to the circuit breaker and stripped minimally to terminate the active and neutral conductors. Install or run the 240V thermal plastic sheath cable behind the gear tray (without a conduit). The earth in the thermal plastic sheath cable can be cut as it need not be connected.

8. Check that the antenna surge diverter is fitted at the base of the control box.



4.11.5 Test criteria

4.11.5.1 Insulation resistance test Use a 5kV insulation resistance tester and take the resistance values after 1 minute of testing. Test the recloser in the OFF (open contact) position. Operate the manual trip lever if required.

Test and record the insulation resistance values.


4.11.5.2 Polarity test Energise the control box and conduct a polarity test on the 240V supply.

For testing purposes, use an effective earthed reference point spaced more than two metres from any electrically conductive object embedded in the ground.

DCWI


4.11.6 Commissioning of the equipment 1. Carry out the commissioning in accordance with Switching Operators Manual 1 and the switching program.

2. Before closing an automatic control recloser on the distribution network, phase out the HV.

3. Ensure that the alarms and controls are set to the specified requirements.


5. Hand over responsibility to Network Operations.


After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager: the construction manager (for work performed by Western Power employees); for contractors the service manager.

DCWI


OBSERVE SAFETY LIFESAVERS

DISTRIBUTION COMMISSIONING WORK INSTRUCTION 4.11 – NOJA POLE-MOUNTED AUTOMATIC CONTROL RECLOSER

Purpose: This instruction covers the testing and commissioning of all replacements or new installations of NOJA pole-mounted automatic control reclosers before energisation.

Notes: 1. The following tests must be carried out after installation and before the recloser is put into service. 2. Bolts and screws in all electrical connections across the Western Power network must be properly tightened.

Address/Pole No.: ________________________________________________________

Work Package No.:_________________ SPIDAWeb Pick ID: _____________________

1. PRE-INSTALLATION CHECK Note: Three-phase reclosers with internal voltage transformers (identified by three name plates) cannot be removed using live line techniques. The unit must be removed under an electrical access permit.

Units with voltage transformers fitted between B and C will give an insulation resistance test result of zero, therefore the results are not applicable.

Earth resistance test Earth resistance result…………………………………………………………….…..…. Ω

Voltage rating kV Recloser rating……………. kV System voltage…………...kV Are they the same?

2. INSULATION RESISTANCE TEST (FOR A SINGLE PHASE RECLOSER) Use a 5kV insulation resistance tester. Measure the resistance after one minute of testing. Put the test recloser in the OFF (open contact) position. Operate the manual trip level if required.


Between contacts 1 & 2 MΩ Not less than 100 MΩ Short-circuit all bushings and

test simultaneously to tank. MΩ

3. INSULATION RESISTANCE TEST (FOR A THREE PHASE RECLOSER)

Put the test recloser in the OFF (open contact) position. Operate the manual trip lever if required. Use a 5kV insulation resistance tester. Measure resistance after one minute of testing.


Supply side

A red to B white MΩ Not less than 100 MΩ B white to C blue MΩ

C blue to A red MΩ

Load side

R red to S white MΩ

S white to T blue MΩ

T blue to R red MΩ

Between contacts

A red to R red MΩ

B white to S white MΩ

C blue to T blue MΩ

Short-circuit all bushings and test simultaneously to tank.

Bushings to tank MΩ

Contact continuity test to be done with the recloser in a closed position.

A to R Ω 0Ω (hard down) B to S Ω

C to T Ω

DCWI



Recloser

Check the recloser for damage, tank, bushings, cracks in boots and excessive dirt.

For relocated reclosers, all the HV boots must be removed, cleaned and repacked with silicon grease. Ensure the boots are filled fully with silicon grease and that no air gaps or moisture are present.

Ensure the bushing palms and the lugs have the correct torque: Three-phase [Palms x 70Nm Lugs x (1 hole 60Nm) (2 holes 44Nm)] Single-phase [Lug x (1 hole 30Nm)].

Check that all the HV lightning arresters have bird caps fitted and are tightened correctly.

Structure

The construction complies with the distribution construction standards and applicable design drawings.

The anti-climbing guards and danger plate are fitted and correctly numbered.

Check that all the connections (including the recloser and control cabinet) are properly connected and bonded to earth.

The maximum separation between the down earth and the recloser umbilical cable.

The pole is labelled correctly.

Control cabinet

The 240V white thermal plastic sheath is continuous up to the circuit breaker and stripped minimally to terminate the active and neutral conductors. Install or run the 240V thermal plastic sheath cable behind the gear tray (without a conduit). The earth in the thermal plastic sheath cable can be cut as it need not be connected.

The antenna surge diverter is fitted at the base of the control box.

Antenna The antenna is aligned to the correct bearing (applicable to radio communications only) and installed correctly, with elements vertical and drain hole down. Antenna pole brackets with open slotted fixing holes are not permitted.

5. ENERGISATION

Energisation

Remove all bypass jumpers, if applicable.

Ensure that the switch is in the correct position (open or closed) as outlined in the switching program or network configuration.

Energise the switchgear as outlined in the switching program and network configuration.

Phase out under Network Control switching schedule at a normally open point such as a pole-top switch.

Disable/disconnect the trip and close coils and the communication device (radio, etc.).

For testing purposes, use an effective earthed reference point spaced more than two metres from any electrically conductive object embedded in the ground. Energise the control box and conduct a polarity test on the 240V supply.

Check and ensure that the control unit indication matches the switchgear status.


DCWI


6. HANDOVER OF RESPONSIBILITY FOR THE COMPLETION OF ITEMS 1-5 I hereby certify that items 1 to 5 have been completed with the above results and transfer control to the commissioning officer.



1. Lock the control unit doors using two approved (NMK2) Western Power padlocks. NK6 padlocks must not be reused.

2. Attach an ‘Out of Service’ warning tag to the padlock on the front of the control cabinet.

3. Inform Network Control of the status of the switchgear.


5. Hand over responsibility to the Asset Operations/Operation Maintenance (Primary Response) for the commissioning of alarms and remote controls.

7. ALARM AND CONTROL TESTING


Secondary Distribution Network Access Request number: ______.

Ensure the correct controller firmware is used.


Ensure all the required settings have been installed.

Perform the following tests in coordination with Network Control

Name of the network operations controller assisting the commissioning: ___________________________________________________________


Check that all the alarms and controls tested to Network control indicate a successful communication.

Phase fault, earth fault and sensitive earth fault detection settings have been recorded by the network controller.

Ensure the analogues (I, V, kW & kVAR) have been recorded by the network controller.

Enable/connect the trip, close coils and check operation.

Remove the ‘Out of Service’ warning tag from the padlock on the front of the control cabinet.



Commissioning officer:____________________________________ NAC #: __________________________

Signature:________________________________ Date & time: ____________________________________


2. Hand over responsibility to Network Control.

3. Return this form to the project file folder and file as a record of commissioning.

4. After the on-site project officer signs off on the DCWI, send a scanned copy to the relevant manager. For work performed by Western Power employees, this would be the construction manager; for contractors, the service manager.


Appendix 1 – Commissioning Officer authorisation requirements to commission distribution equipment Commissioning Officer authorisation requirements to commission distribution equipment

Role Developer – Jointer

Developer – Electrician

Distribution Linespersons

Electrician (Cert III)

Distribution Jointer

Automation equipment

Commissioning Officer –

Network Invest & others

Tester in

Charge

Cable test

section LV switching officer HV switching officer

Mandatory additional training PTS 290 or 289 or 3127

or 3128 PTS 2711 or

3632 PTS 2711 or 3632

PTS 2711 or 3632, plus PTS

7213 Applicable level Applicable level

DC

WI FO

RM

S

1.1 HV overhead powerlines Install and test6 Energise and phase out

1.2 LV overhead lines Install and test6 Energise and phase out

1.3 LV ABC Install and test6 Energise and phase out

1.4 HV ABC and Hendrix spacer cable Install and test6 Energise and phase out

2.1 HV XLPE cable UDSM4 UDSM4 Joint and test5 Test VLF Energise and phase out

2.2 HV mixed cable Joint and test5 Test VLF Energise and phase out

2.3 HV paper-insulated belted cable Joint and test5 Test Hipot Energise and phase out

2.4 HV paper-insulated screened cable Joint and test5 Test Hipot Energise and phase out

2.5 LV XLPE cable UDSM4 UDSM4 Connect and test Joint and test5 Energise and phase out

2.6 LV cable with/without pillars UDSM4 UDSM4 Connect and test Joint and test5 Energise and phase out

2.7 Steel standard streetlights UDSM4 UDSM4 Connect and test Joint and test5 Energise and phase out

2.8 SPUDS single-phase to three-phase UDSM4 UDSM4 Install and test Joint and test5 Energise and phase out

2.9 Pole to pillar UDSM4 Install and test6,7 Install and test Joint and test5 Energise and phase out

3.1 MPS distribution transformer UDSM4 Install and test Energise and phase out

3.2 Non-MPS distribution transformer UDSM4 Install and test Energise and phase out

3.3 Single phase transformer (pole-mounted/pad-mounted) UDSM4 Install and test6 Install and test Energise and phase out

3.4 Three-phase transformer (pole-mounted) UDSM4 Install and test6 Connect and test Energise and phase out

3.5 SWER isolation transformer (pole-mounted) Install and test6 Connect and test Energise and phase out

3.6 SWER isolation transformer (ground mounted) Install and test Energise and phase out

4.1 Earth testing UDSM4 Install and test Install and test Install and test Install and test Energise and phase out

4.2 Nu-Lec load break switch/sectionaliser Install and test6 Install and test Install and test Energise and phase out

4.3 Nu-Lec pole-mounted automatic control recloser Install and test6 Install and test Install and test Energise and phase out

4.4 Pole-top switch Install and test6 Energise and phase out

4.5 Pole-mounted capacitor bank Install and test6 Install and test Install and test Energise and phase out

4.6 HV single-phase underground rural supply fuse switch Install and test Energise and phase out

4.7 Voltage regulator (closed Delta connection) Install and test Install and test Energise and phase out

4.8 Voltage regulator (Star connection) Install and test Install and test Energise and phase out

4.9 HV ring main switchgear UDSM4 Install and test Energise and phase out

4.10 LV kiosk UDSM4 Install and test Energise and phase out

4.11 NOJA pole-mounted automatic control recloser Install and test6 Install and test Energise and phase out

See the Notes section, below.

DCWI


Notes

1. PTS 271 (Distribution Testing and Commissioning) is a standalone course with the following prerequisites: Cert III Linesperson (or equivalent) or Electrician.

2. PTS 363 (Distribution Testing and Commissioning) is a unit that is part of the Cert III Linesperson course.

3. Automation equipment Commissioning Officers who have completed PTS 721 (Nu-Lec Reclosers and Load Break Switches) can carry out tests as indicated.

4. Refer to Underground Distribution Scheme Manual (UDSM), Qualification Matrix 6.2.7.6, for the tasks that Developers can perform.

5. Dx Jointers can only perform insulation, core to core and continuity tests on cables.

6. Dx Linespersons can only perform continuity, insulation and phase-to-phase tests on lines and pole mounted equipment and pole to pillar cables.

7. Personnel commissioning this work must have completed PTS 149 and hold current authorisation for pole to pillar work.

Documents

Network Standard 11 / 2013 Testing and Commissioning Low voltage overhead line ... 4.9 High voltage ring main switchgear ... The group which conducts pre-commissioning and final commissioning