Swg Switching

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20090 version 2Page 1 of 5

New Zealand Qualifications Authority 2008

Carry out switching operations on metal clad switchgear

Level 4

Credits 3

Purpose People credited with this unit standard are able to: demonstrate knowledge ofmetal clad switchgear and the operational status of metal clad switchgear;operate metal clad switchgear; and report switching actions.

Subfield Electricity Supply

Domain Electricity Supply - Core Skills

Status Registered

Status date 22 October 2003

Date version published 20 June 2008

Planned review date 31 December 2009

Entry information Prerequisites: Unit 19324, Demonstrate knowledge ofthe theory and operation of switch gear in the electricitysupply industry; Unit 20091, Read and interpret single

line diagrams in the electricity supply industry; ordemonstrate equivalent knowledge and skills.

Accreditation Evaluation of documentation and visit by NZQA andindustry.

Standard setting body (SSB) Electricity Supply Industry Training Organisation

Accreditation and Moderation Action Plan (AMAP) reference 0120

This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.

Special notes

1 This unit standard is intended for, but not restricted to, workplace assessment.

2 Safety of personnel and plant must be a priority throughout the assessment. If thesafety requirements are not met the assessment must stop.


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3 Performance and work practices in relation to the elements and performance criteriamust comply with all current legislation, especially the Electricity Act 1992, and anyregulations and codes of practice recognised under that statute; the Health andSafety in Employment Act 1992; and the Resource Management Act 1991.Electricity supply industry codes of practice and documented industry proceduresinclude the Safety Manual Electricity Industry (SM-EI) (2004) Wellington: Electricity

Engineers Association. A full list of current legislation and industry codes isavailable from the Electricity Supply Industry Training Organisation, PO Box 1245,Hamilton.

4 The phrase in accordance with industry requirements is implicit in all elements andperformance criteria in this unit standard.

5 Industry requirementsinclude all industry and workplace documented policies,procedures, specifications, business, and quality management requirements relevantto the workplace in which assessment is carried out.

Elements and performance criteria

Element 1

Demonstrate knowledge of metal clad switchgear.

Performance criteria

1.1 The function of metal clad switchgear is described in terms of making andbreaking flow of current and providing a point of isolation between power cables

and bus bar.

1.2 Components of metal clad switchgear are identified.

Range includes but is not limited to protection and controls, spouts, busshutters, circuit breaker, voltage transformers, enclosed bus bars,current transformers, cable entry.

1.3 The isolation procedures for an outdoor circuit breaker and indoor metal cladswitchgear are described.

1.4 The isolation and construction of metal clad switcher and gas insulatedswitchgear (GIS) are described.

1.5 Types of isolation methods for metal clad switchgear are described in terms ofhorizontal isolation, vertical isolation, and fixed type.


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Element 2

Demonstrate knowledge of the operational status of metal clad switchgear.


2.1 Equipment status is determined in accordance with established procedures andinstructions.

Range includes but is not limited to indications, alarms, operationscount, protection operations, number of fault breaks.

2.2 The isolation principles associated with metal clad switchgear are described interms of racking in and racking out.

Element 3

Operate metal clad switchgear.

Range open, close, protection tripping, isolate, local and remote operation, indications,alarms, control fuses, rack in, rack out.


3.1 Switching plans to operate equipment are developed and checked byauthorised personnel.

3.2 Equipment to be operated is positively identified.

Range includes but is not limited to single line diagram, relay diagram,switchgear type, operating notes.

3.3 The equipment is operated in accordance with established procedures andinstructions.

Range includes but is not limited to switchboard or substation layout,locking system, manufacturers operating manual andspecifications.

3.4 Operating decisions are determined in accordance with equipment status andoperating requirements.

Range includes but is not limited to plant availability and servicecondition, loading limits, impact, options, alternatives.

3.5 Equipment is operated in sequence and in accordance with schedules andworkplace procedures within defined plant capabilities.

Range switching capability, switching plan.


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3.6 Plant and equipment are monitored.

Range includes but is not limited to current loading, status, alarms,defects, action confirmation.

3.7 Isolations are confirmed by electrical testing.

Range includes but is not limited to bus bars, power cables.

3.8 Earths are applied to equipment.

Range includes but is not limited to bus bars, power cables.

3.9 Secondary circuits are isolated.

Range includes but is not limited to voltage transformer, locking pins,fuses removed.

Element 4

Report switching actions.

Range includes but is not limited to operating log, service report, work report, hazardidentification.


4.1 Recorded information is complete, concise, and legible.

4.2 Information is recorded in the required format and filed in the correct location.

Please note

Providers must be accredited by NZQA, or an inter-institutional body with delegatedauthority for quality assurance, before they can report credits from assessment againstunit standards or deliver courses of study leading to that assessment.

Industry Training Organisations must be accredited by NZQA before they can register

credits from assessment against unit standards.

Accredited providers and Industry Training Organisations assessing against unit standardsmust engage with the moderation system that applies to those standards.


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Accreditation requirements and an outline of the moderation system that applies to thisstandard are outlined in the Accreditation and Moderation Action Plan (AMAP). TheAMAP also includes useful information about special requirements for organisationswishing to develop education and training programmes, such as minimum qualifications fortutors and assessors, and special resource requirements.

Comments on this unit standard

Please contact the Electricity Supply Industry Training Organisation [email protected] ifyou wish to suggest changes to the content of this unit standard.

Documents

Swg Switching