POLE MOUNTED DISTRIBUTION SWITCHGEAR - … - Pole... · switchgear that satisfies Westpower’s safety, ... This process is also particularly important when designing structures,

Status – Approved Standard – 220S038

Version 3.0 – March 2015

© Westpower Limited 2014

POLE MOUNTED DISTRIBUTION

SWITCHGEAR - OPERATING PROCEDURES


Version 3.0 – – March 2015

POLE MOUNTED DISTRIBUTION SWITCHGEAR - OPERATING PROCEDURES

© Westpower Limited 2014 2

RECORD OF AMENDMENTS

Issue Affected

Section/ Clause Change By Date

1.0 All First Approval RMG 31/1/2014

2.0 3.6.1 & 3.7.1 Minor addition to procedure R Griffiths 11/04/2014

3.0 Reviewed R Griffiths 12/03/2015





Table of Contents

1 GENERAL .................................................................................................................................. 5

1.1 Scope ................................................................................................................................. 5

1.2 Application .......................................................................................................................... 5

1.3 Objective of this Standard ................................................................................................... 5

1.4 Definitions ........................................................................................................................... 5

1.5 Referenced Documents ...................................................................................................... 5

1.5.1 Legislation ................................................................................................................... 5

1.5.2 Industry Rules and Standards ...................................................................................... 6

1.5.3 Westpower Documents ................................................................................................ 6

1.6 Health and Safety ............................................................................................................... 6

1.7 Environmental Considerations ............................................................................................ 7

1.8 Risk Identification and Management ................................................................................... 7

1.9 Copyright ............................................................................................................................ 7

1.10 Enquiries Regarding this Document .................................................................................... 7

2 CRITICAL OPERATING PROCEDURES FOR DISTRIBUTION SWITCHGEAR ....................... 8

2.1 Before Operating Switch ..................................................................................................... 8

2.2 Switch Operation ................................................................................................................ 8

3 INDIVIDUAL SWITCH OPERATING PROCEDURES ................................................................ 9

3.1 Disconnectors ..................................................................................................................... 9

3.1.1 Operation ..................................................................................................................... 9

3.2 S & C Type XS Dropout Fuse ........................................................................................... 10

3.2.1 Installing the Fuse Link .............................................................................................. 11

3.2.2 Installation and Operation .......................................................................................... 12

3.3 Loadbuster Operating Instructions ................................................................................... 13

3.4 GANGED EXPULSION DROPOUT FUSE ........................................................................ 16

3.4.1 General Description ................................................................................................... 16

3.4.2 Operation ................................................................................................................... 16

3.5 Disconnector Switched Capacitor Bank ............................................................................ 17

3.5.1 To remove from service ............................................................................................. 17

3.5.2 To restore to service .................................................................................................. 17

3.6 Joslyn Switched Capacitor Bank (SEL2411 Controller) ..................................................... 18







3.6.3 Visual indication of Joslyn switch position .................................................................. 19

3.6.4 Electrical operation of Joslyn switch from SEL 2411 .................................................. 19

3.7 Joslyn Switched Capacitor Bank (SEL734B Controller) .................................................... 20



3.7.3 Visual indication of Joslyn switch position .................................................................. 21

3.7.4 Electrical operation of Joslyn switch from SEL 734B .................................................. 21

3.8 Cooper Power Systems Control Panels ............................................................................ 22

3.8.1 Description ................................................................................................................ 22

3.8.2 FXA Controller ........................................................................................................... 22

3.8.3 FXB Controller ........................................................................................................... 24

3.9 SEL 351R Recloser Control .............................................................................................. 26

3.9.1 Description ................................................................................................................ 26

3.10 SEL 651R Recloser Control .............................................................................................. 27

3.11 KFME ............................................................................................................................... 29

3.11.1 Description ................................................................................................................ 29

3.12 Entec Load Break Switch .................................................................................................. 30

3.12.1 Description ................................................................................................................ 30

3.12.2 OPEN-CLOSE Position Indicator ............................................................................... 30

3.13 MFC Control Panels ......................................................................................................... 31

3.13.1 REMOTE ENABLE/DISABLE .................................................................................... 32

3.13.2 OPEN/CLOSE ........................................................................................................... 32

3.14 VWVE38X Reclosers ........................................................................................................ 33

3.14.1 Description ................................................................................................................ 33

3.15 G&W Viper-ST .................................................................................................................. 35

3.15.1 Description ................................................................................................................ 35

3.15.2 Manual opening of Device ......................................................................................... 36

3.16 Hydraulic Actuator (Mk2) .................................................................................................. 37

3.16.1 Control Panel Layout ................................................................................................. 37

3.16.2 Manual Operation ...................................................................................................... 38

3.17 HML Schneider Automated Disconnector ......................................................................... 39

3.18 Regulators ........................................................................................................................ 40

3.18.1 Longford Corner ........................................................................................................ 40

3.18.2 Haupiri ....................................................................................................................... 42

3.18.3 Cronadun ................................................................................................................... 44

4 DOCUMENT CHANGE REQUEST ........................................................................................... 46





1 GENERAL

1.1 Scope

The purpose of this manual is to provide a summary of the important operating instructions necessary to operate pole mounted distribution switchgear. This document does not cover zone substation switchgear. This document does not cover ground mounted switchgear; for this refer instead to 220S019 Section 19 Ground Mounted Distribution Switchgear Operating Standard.

1.2 Application

This document is applicable to all pole mounted distribution switchgear operations, including Reclosers, Sectionalizers, Disconnectors, and Drop Out fuses. Only trained operators who possess Westpower’s required competencies shall perform these operations.

1.3 Objective of this Standard

The objective of this document is to deliver operating processes for pole mounted network switchgear that satisfies Westpower’s safety, network performance and asset lifecycle criteria.

1.4 Definitions

Unless stated otherwise, all words and phrases used in this document shall have the meaning defined in: - � Electricity Act 1992

� Electricity (Safety) Regulations 2010

� Westpower NOC standard 220S002 – Section 2 – Definitions

� Common English language definitions

Practicable means “that can be done, used.” When applied to switching operations,

practicable shall be interpreted as meaning all actions/steps that can be used.

1.5 Referenced Documents

1.5.1 Legislation

Electricity Act 1992

Electricity (Safety) Regulations 2010





1.5.2 Industry Rules and Standards

SM-EI Safety Manual - Electricity Industry (SM-EI) – Parts 1 – 3 inclusive, latest

versions

1.5.3 Westpower Documents

220S002 NOC standard – Section 2 – Definitions

220S019 Section 19 Ground Mounted Distribution Switchgear Operating Standard

220S105

310S035

Change Management Standard

Environmental Management Plan

392S002 Health And Safety Requirements For Contractors

393S102 Safety Management System for Public Safety

920S017 Personal Protection Equipment Policy

1.6 Health and Safety

All works on distribution network pole mounted switchgear, and their associated equipment, shall be performed according to Westpower’s Network Operations Centre Operating Instructions and current versions of the Safety Manual – Electricity industry (SM-EI). A systematic method of identifying all hazards shall be applied to all projects and worksites, generally as required by Safety Manual – Electricity Industry (SM-EI) Parts 1, 2 & 3.

Always use a hotstick when working with overhead switchgear. Failure to do so could result in contact with high voltage, which will cause death or severe personal injury. Contractors and Service Providers to Westpower shall obey the requirements of Westpower’s 392S002 Health And Safety Requirements For Contractors. Appropriate hazard mitigation methods shall be implemented before work commences. This process is particularly important when running overhead conductors in order to avoid contact with adjacent circuits. This process is also particularly important when designing structures, and selecting materials and equipment, for use on Westpower electricity network. Particular attention shall be given to the ability to apply effective worksite earthing equipment and any equipotential bonding requirements, to comply with all SM-EI earthing requirements. Personnel shall use personal protective equipment (PPE) as per the requirements of: -





� Westpower’s 920S017 Personal Protection Equipment Policy. This standard outlines where and

when staff, contractors and Service Providers alike should be wearing personal protective

equipment (PPE).

� Safety Manual – Electricity Industry (SM-EI) – Parts 1 – 3 inclusive.

When working with materials such as insulating oils, gases and other hazardous substances the requirements of Section 7 of the SM-EI shall be adhered to. Before any major purchases of “new to Westpower” equipment, or significant changes to existing workplace processes are planned, any hazards associated with the new equipment or modified work process should be documented and suitable controls proposed by the person conducting the purchase or proposing the change. Consultation with Westpower’s Health and Safety personnel shall be undertaken during this process. The correct change management process is contained in Westpower’s 220S105 Change Management Standard.

1.7 Environmental Considerations

Environmental considerations shall be in accordance with the requirements of Westpower’s 310S035 Environmental Management Plan.

1.8 Risk Identification and Management

A systematic method of identifying all risks shall be applied to all design, construction, maintenance and operation activities undertaken on Westpower’s networks, generally as required by Westpower’s 393S102 Safety Management System for Public Safety. Appropriate risk elimination, mitigation or reduction methods shall be implemented before work commences on any network asset.

1.9 Copyright

The copyright of this publication is the property of Westpower Limited. No part of this publication may be reproduced by photocopying or by any other means without the prior written permission of Westpower Limited.

1.10 Enquiries Regarding this Document

Contact Person: General Manager Assets and Engineering Services





2 CRITICAL OPERATING PROCEDURES FOR DISTRIBUTION SWITCHGEAR

2.1 Before Operating Switch

a) Ensure that you are at the correct location.

b) Identify the equipment to be operated and check that you are familiar with its operation and

characteristics.

c) Ensure that you are familiar with the "ON" and "OFF" indicators.

d) Ensure that you have read the equipment operating labels and manuals.

e) Perform a self-competency familiarity check.

f) If you don't feel confident to carry out the planned operation, then DO NOT attempt the

operation. Instead, advise the controller accordingly.

2.2 Switch Operation

Correct Operating techniques include:-

� Checking insulating gloves for any cuts, cracks or other defects.

� Wearing serviceable insulating gloves.

� Wearing eye/face protection.

� Wearing type approved overalls.

� Familiarity with equipment operating procedures.

Prior to operating any equipment, step back and confirm you are at the correct device and are about to perform the correct operation.





3 INDIVIDUAL SWITCH OPERATING PROCEDURES

3.1 Disconnectors

Various manufacturers have produced Disconnectors, and a wide range can be found on the Westpower network. These may have an age range from new to many decades old. Therefore the following precautions must be made prior to the operation of any Disconnector:

� Visual inspections of the condition of the Disconnector device, operating handles, earthing

mat and connection leads.

� If any of the items are missing or defective, the Disconnector is not to be operated under live

conditions.

3.1.1 Operation

To Open Device

(1) Stop! Check you are at the correct switch and are performing the correct operation.

(2) Unlock operating handle.

(3) Stop! Recheck you are at the correct switch and are performing the correct operation.

(4) In one swift positive motion move the Disconnector handle until it is home in the opposite

locking position.

(5) Lock the operating handle.

To Close Device


(2) Unlock operating handle.


(4) In one swift positive motion move the Disconnector handle until it is home in the opposite

locking position.

(5) Lock the operating handle.





3.2 S & C Type XS Dropout Fuse





3.2.1 Installing the Fuse Link





3.2.2 Installation and Operation

circuits or hardware.tion if contact is made with energised

protect personnel from injury or electrocu-protect equipment. A fuse cutout cannotS&C Type XS Fuse Cutouts are designed to

Installing and Closing the Fuse Tube

Only qualified persons should operate, inspect,

or main tain a fuse cutout.

Such qualified persons should wear protec -

tive equipment such as rubber gloves, hard

hat, . . . safety glasses, flash-clothes, etc., in

accordance with established safety practices,

and be trained in their proper care.

WARNING

Hot gases and fuse link particles can be

expelled at high velocity during interruption.

When closing a fuse cut out, all personnel

should be positioned well clear of its

exhaust.

Step 1

After installing the fuse link as described in

the foregoing sections, insert the prong of a

hookstick into the opening under the trunnion

casting band. Or, as an alternate, insert the

prong in the keyhole opening in the trunnion

casting band.

Step 2

Guide the fuse tube into the fuse cutout hinge as

shown in Figure 2 and disengage the hookstick.

Step 3

Insert the prong of the hookstick in the pull ring

on the upper ferrule of the fuse tube and swing

the fuse tube to within approximately 45º of

the fully closed position. Then, while looking

away from the fuse cutout, drive the fuse tube

to the closed position using a vigorous thrust.

Carefully disengage the hookstick taking care

to avoid opening the fuse tube.

DANGER

-

Figure 2. Installing the fuse tube.

Fuse cutout hinge

KeyholeHookstick

prong

Trunnion casting band





3.3 Loadbuster Operating Instructions

Check for proper resetting of the Loadbuster by extending the tool about 75mm

by hand. Throughout this travel, an increasing spring resistance should be felt.

Step 1 Reach across in front of the dropout fuse with Loadbuster and hook the anchor, located at the top of Loadbuster, over the attachment hook on the far side of the dropout fuse. See Figure 3.

Step 2 Swing Loadbuster toward the dropout fuse and pass the Loadbuster pull-ring hook through the pull-ring on the dropout fuse. The pull-ring latch will deflect and upon com plete entry of the pull-ring, will spring back, locking Load buster to the pull-ring. Loadbuster is now connected across the upper contact of the dropout fuse. See Figure 3.

Step 3 To open the circuit, operate Loadbuster with a firm, steady pull until it is extended to its maximum length. See Figure 4. Avoid jerking and hesitation. The resetting latch will keep it open. Generally, there will be no indica tion of circuit interruption but commutation arcing may be noted at the pull-ring hook and at the anchor, particu larly when interrupting load currents approaching the rating of the tool. The only sound will be that of Load buster tripping.

Step 4 To detach Loadbuster after circuit interruption, first raise it slightly and disengage the anchor from the attachment hook.

CAUTION

When Loadbuster is raised the open gap distance is reduced. Careless manipulation could decrease the open gap to the point where flashover will occur.

Figure 3.Loadbuster connected to Dropout Fuse.

Attachment hook

Anchor

Pull-ring Latch

Pull-ring

Pull-ring hook





Next, bring the power fuse toward its fully open position as illustrated in Fig 4 (this procedure is recommended as uniform practice because disconnects will not

necessarily open fully by gravity). Then remove Loadbuster from the pull-ring by turning the pole. This will deflect the pull-ring latch to release the pull-ring. On fuse cutouts, fuse limiters, or power fuses on which the fuse tube or power fuse will drop fully open by gravity, it may be preferred to remove Loadbuster by “rolling” it off both the attachment hook and pull-ring at the same time merely by twisting the pole after Loadbuster has been tripped and fully extended. To perform this operation easily and smoothly, always roll Loadbuster so that it rotates in an upward direction.

Figure 4. Loadbuster in tripped position





Fig 5. Detaching Loadbuster from Dropout Fuse Fig 6. Resetting Loadbuster

To reset Loadbuster for the next operation, extend the tool slightlyStep 5

and lift the resetting latch with the thumb. See Fig 6. With the latch up, press down on the inner tube assembly until the tool is closed completely so the trigger can reset itself. When reset properly, the orange paint on the inner tube assembly will no longer be visible. Check for proper resetting by extending the tool about (75 mm). Throughout this travel an increasing spring resistance should be felt.





3.4 GANGED EXPULSION DROPOUT FUSE

AEM Type ‘LON’

3.4.1 General Description

The AEM Type ‘LON’ is a Single Vented Ganged EDO. It is used to isolate all phases in the event that one fuselink interrupts. This prevents dangerous back feeds and low voltage damage to equipment.

3.4.2 Operation

Use the 11 kV Fuse Stick to push on the Link Mechanism at the bottom of the Fuse Base. This will cause all the Fuse Carriers to fall away. Note: When replacing a Fuse Link, the mechanism at the bottom has to be reset. ie: pulled forward before any of the Fuse Carriers can be removed from the holders. The Fuse Link can then be replaced in the normal manner.

Link Mechanism





3.5 Disconnector Switched Capacitor Bank

3.5.1 To remove from service

1. Obtain Reclose Block on appropriate Feeder

2. Open 11 kV DDO Fuses using Arc Quencher (Loadbuster) with universal stick (Shotgun)

Points to Note:

a) Only personnel trained in Arc Quencher (Loadbuster) operation may remove DDO Fuses b) Full face covered mask, gloves and appropriate protective clothing to be worn

3. Wait 10 minutes

4. Test and apply earths between Disconnector and 11 kV DDO Fuses

5. Cancel Reclose Block

Warning:

Prior to any switching on Feeder which would remove 11 kV supply to Capacitor Bank, the above procedure is to be followed to remove Capacitor Bank from service. Under no circumstances is 11 kV Disconnector to be used to remove capacitor from service

3.5.2 To restore to service

1. Obtain Reclose Block on appropriate Feeder

2. Remove earths between Disconnector and 11kV DDO Fuses

3. Open Disconnector controlling Capacitor Bank

4. Replace 11kV DDO Fuses

5. Close Disconnector controlling Capacitor Bank

Warning:

Do not open Disconnector if it has not closed properly. One close attempt only allowed. Refer to procedure to remove Capacitor from service with DDO fuses if further operation of Disconnector required 6. Cancel Reclose Block

Warning:

DDO Fuses not to be used to liven Capacitor Bank





3.6 Joslyn Switched Capacitor Bank (SEL2411 Controller)


1. Select Joslyn controller to manual control from SEL2411

2. Open Joslyn switch from SEL 2411

3. Check Joslyn switch open on all three phases from visual indicators

4. Wait 10 Minutes

5. Prove de-energised load side of Joslyn switch

6. Open and Remove 11kv DDO fuses, Tag

7. Test & apply earths between 11kv DDO fuses & Joslyn Switch

8. Close Joslyn switch from SEL 2411, Lock & Tag Control box

Note: Under circumstances where 11 kV isolation of the capacitor bank is required and there is no power for electrical operation of the Joslyn switch from the SEL2411 controller, then the capacitor shall have a minimum 10 minute time period to discharge before the11 kV DDO fuses can be removed. Warning: Isolation of capacitors without load break operation will require removal with an arc quencher as per 1Mvar Capacitor switching procedure.


1. Unlock, Untag control box & open Joslyn switch from SEL 2411

2. Remove earths between 11kv DDO fuses & Joslyn Switch


4. Untag, replace & close 11KV DDO fuses

5. Close, Joslyn switch from SEL 2411

6. Select Joslyn controller to Auto control from SEL 2411

Warning: DDO fuses are not to be used to liven a capacitor bank





3.6.3 Visual indication of Joslyn switch position

Bottom View Single

phase side view Closed position Open Position

Note: Verify all three phases are indicating the correct position

3.6.4 Electrical operation of Joslyn switch from SEL 2411

AUTO/ MANUAL AND OPEN/ CLOSE OPERATION OF JOSLYN SWITCH FROM SEL 2411 CONTROLLER ONLY Note: No electrical operation is available when power is off to the VT

SEL 2411





3.7 Joslyn Switched Capacitor Bank (SEL734B Controller)

Note: Joslyn Switches with SEL734B Controllers can be remotely Opened/Closed from Westpower NOC

The following procedure should be followed when Manual Operation is required.


1. Select Joslyn controller to manual control from SEL734B

2. Open Joslyn switch from SEL 734B


4. Wait 10 Minutes

5. Prove de-energised load side of Joslyn switch

6. Open and Remove 11kv DDO fuses, Tag

7. Test & apply earths between 11kv DDO fuses & Joslyn Switch

8. Close Joslyn switch from SEL 734B, Lock & Tag control box

Note: Under circumstances where the 11 kV isolation of the capacitor bank is required and there is no power for electrical operation of the Joslyn switch from the SEL734B controller, then the capacitor shall have a minimum 10 minute time period to discharge before the11 kV DDO fuses can be removed.

Warning: Isolation of capacitors without load break operation will require removal with an arc quencher as per 1 Mvar Capacitor switching procedure.


1. Unlock, Untag control box & open Joslyn switch from SEL 734B

2. Remove earths between 11kv DDO fuses & Joslyn Switch


4. Untag, replace & close 11KV DDO fuses

5. Close, Joslyn switch from SEL 734B

6. Select Joslyn controller to Auto control from SEL 734B

Warning: DDO fuses are not to be used to liven a capacitor bank.





3.7.3 Visual indication of Joslyn switch position

Bottom View Single

phase side view Closed position Open Position

Note: Verify all three phases are indicating the correct position

3.7.4 Electrical operation of Joslyn switch from SEL 734B

AUTO/ MANUAL AND OPEN/ CLOSE OPERATION OF JOSLYN SWITCH FROM SEL 734B CONTROLLER ONLY Note: No electrical operation is available when power is off to the VT

SEL 734B





3.8 Cooper Power Systems Control Panels

3.8.1 Description

Coopers Power Systems have produced a number of different controllers for their pole top devices, with no one controller being specific to a particular device. Thus early generation devices may have a later generation controller. It is therefore imperative that the operator identifies the control panel for the device, prior to following operation instructions. The type of controller should be clearly printed along the top of the control panel. For the manual operation of Cooper devices refer to the specific device in this document

3.8.2 FXA Controller

Operation

Setting to Local / Remote, labeled: SUPVR ON / SUPVR OFF. (1) Stop! Recheck you are at the correct switch.

(2) Unlock and open control cabinet.

(3) Stop! Recheck you are at the correct switch.

(4) Set toggle switch to SUPVR OFF to DISABLE SCADA control.

(5) Set toggle switch to SUPVR ON to ENABLE SCADA control.

(6) Close and Lock the control cabinet





To Trip Device




(4) Turn the Trip/Close Lever anticlockwise to trip the device.

(5) The Open LED will illuminate to show that the device is in an open state.

(6) Close and Lock the control cabinet.

To Close Device




(4) Set the panel to SUPVR OFF (local).

(5) Turn the Trip/Close Lever clockwise to close the device.

(6) The Close LED will illuminate to show that the device is in the closed state.


To Set / Unset Auto Reclose Function




(4) Set the panel to Local / SUPVR OFF.

(5) Toggle the NON RECLOSING / NORMAL RECLOSING toggle to the required position.

(6) In the Non Reclosing position a LED will illuminate showing “Non-Reclosing Active”.






3.8.3 FXB Controller

Operation

Setting to Local / Remote, labelled: SUPVR ON / SUPVR OFF (1) Stop! Recheck you are at the correct switch.

(2) Unlock and open the control cabinet.


(4) Press the “SUPERVISORY ON” key pad to toggle between Local and Remote control.

(5) The LED in the “SUPERVISORY ON” key will illuminate to indicate Remote of SCADA control.





To Trip Device


(2) Unlock and open the control cabinet.


(4) Press the “TRIP” button.

(5) The “RECLOSER OPEN” LED will illuminate to show that the device is in an open state.


To Close Device


(2) Unlock and open control cabinet


(4) Set the panel to Local / Supervisory LED OFF.

(5) Press the “CLOSE” button.

(6) The “RECLOSER CLOSED” LED will illuminate to show that the device is in the closed state.

(7) Close and lock the control cabinet.





(4) Set the panel to Local / Supervisory LED OFF.

(5) Press the “NON RECLOSING” key to toggle to the required position.

(6) In Non Reclosing position a LED will illuminate showing “Non-Reclosing Active”.

(7) Close and lock the control cabinet.





3.9 SEL 351R Recloser Control

3.9.1 Description

The SEL 351R recloser controller panel can be found fitted to a number of various recloser devices from many manufacturers. The panel uses clearly defined one touch keys for basic operations. The 651R control panel has a slightly different layout to the 351R, however the key layout and description are very similar.

Operation





See 3.9

3.10 SEL 651R Recloser Control

Operation

Setting to Local / Remote (1) Stop! Recheck you are at the correct switch.



(4) Press the “REMOTE ENABLED” key to toggle between the on and off state.

(5) An illuminated LED on the “REMOTE ENABLED” label indicates that the device is set to local

operation only.






To Trip Device




(4) Press the “TRIP” operator control pushbutton to trip the recloser (and take the control to the

lockout state). Corresponding “RECLOSER OPEN” LED illuminates to indicate the recloser

is open.


To Close Device




(4) Set the panel to Local.

(5) Press the “CLOSE” key next to the “RECLOSER CLOSED” label.

(6) The “RECLOSER CLOSED” LED will illuminate indicating that the device is in the closed

state.






(4) Set the panel to Local.

(5) Press the “RECLOSE ENABLED” key to toggle between the required states.

(6) The LED in the “RECLOSE ENABLED” key will illuminate when the reclose function is

selected.






3.11 KFME

3.11.1 Description

The KFME is an electronically controlled recloser. Arc interruption takes place within three sealed vacuum interrupters. Oil is used for electrical insulation, but is not involved in arc interruption. The moving contacts in the vacuum interrupters are driven by the release of opening springs. A low energy tripper, actuated by the recloser control, releases the opening spring. Closing energy, as well as energy to charge the opening spring, is supplied by a high-voltage closing solenoid momentarily connected phase-to-phase through a high-voltage contactor.

To Trip Device


(2) Using a hook stick pull down the YELLOW trip handle.

(3) The device will trip.

To Close Device


(2) Using a hook stick push the YELLOW trip handle up.

(3) Using the electronic control panel, close the device as per instructions for the specific panel.

NB: The device cannot be closed by hook stick, however, the Trip handle must be in the closed position before a control panel close is possible.

To Set / Unset auto reclose function (see FXA/FXB Controller)

Yellow Trip Handle





3.12 Entec Load Break Switch

3.12.1 Description

The Entec is a three-phase, electronically controlled, vacuum interrupting Load Beak Switch.

3.12.2 OPEN-CLOSE Position Indicator

The OPEN-CLOSE contact position indicator consists of a red ON and a green OFF indicator

located on the bottom of the mechanism housing.

To Trip Device


(2) Using a hook stick pull down the GREEN trip handle, located on the side of the switch.

To Close Device


(2) Using a hook stick pull down the RED trip handle.

(3) It is only possible to close a Entec device by using the electronic controls. Refer to 3.5.1 MFC

Control Panels for the specific control attached to the device being operated.

NB: The device will NOT close with the Red handle in the up position it is therefore important to ensure that the Red handle is in the down position prior to attempting close controls.

To Lock Device in either Open or Closed Position

Pull down the Yellow ring located on the side of the device. Push up to unlock.





3.13 MFC Control Panels





3.13.1 REMOTE ENABLE/DISABLE

3.13.2 OPEN/CLOSE

The push-button toggles Enable/Disable. When Remote Enabled Lamp is on, all remote functions are enabled. When Control Lock Lamp is on, all operation functions and all functions in Local Control Section are locked.

CLOSE – Pressing CLOSE push-button sends a close signal. OPEN – Pressing OPEN pushbutton sends a trip signal.





3.14 VWVE38X Reclosers

3.14.1 Description

The VWVE38X reclosers use a vacuum as the arc interrupting medium. A single break on each phase is accomplished by separating contacts inside the vacuum interrupter. All arcing is contained within the vacuum envelope. Low energy arc interruption in a vacuum results in far less shock and contact wear, extending the recloser mechanism life.

Note: The status of the device can be seen from the contact position indicator located under the sleet hood.

To Trip Device


(2) Using a hook stick pull down the YELLOW trip handle, located under the sleet hood.With the

handle in the down position the device cannot be operated remotely.

Trip/Close Lever & Auto Reclose Lever





To Close Device


(2) Manual closing is accomplished by raising the yellow handle. NOTE: Raising the yellow

handle on a recloser with an electronic control will NOT close the recloser, and this must be

performed via the electronic controls. The recloser will only close if the recloser closing coil

has the proper voltage applied to it.

To Set / Unset auto reclose function


(2) To UNSET the reclose function, use a hook stick to pull down recloser block leaver under the

sleet hood.

(3) To SET the reclose function, use a hook stick to push up the reclose block leaver of the

device.





3.15 G&W Viper-ST

3.15.1 Description

The Viper is a solid dielectric, vacuum fault interrupter recloser. The Viper can be installed as a single 3 pole unit or as individual poles to assist in mounting. Excluding the manual trip handle, the Viper is an entirely electronically controlled device. The typical controller for a Viper recloser is a SEL651R, however other controllers may be installed. The status of each pole is visually indicated at the bottom of the recloser. Note: As each pole of the Viper can be operated individually ensure, when manually operating the

device, that each of the three poles has operated.

Refer to the correct electronic controller instructions for the controller that is installed on the equipment being operated.

For electronic control of the Viper see 3.9 SEL651R Recloser Control for the specific control actions.





3.15.2 Manual opening of Device

To Trip Device


(2) Using a hook stick pull down the YELLOW trip handle, located on the side of the switch.

To Close Device


(2) Using a hook stick push the YELLOW trip handle up.

(3) It is only possible to close a Viper device by using the electronic controls. Refer to section 3.9

NB: Remote or electronic closing of the device will NOT be possible while the trip handle is in the lowered position.





3.16 Hydraulic Actuator (Mk2)

3.16.1 Control Panel Layout

To Open Device

(1) Select Remote/Local Selection Switch to ‘Local’

(2) Open Disconnector using ‘Open’ Pushbutton

(3) Remove Motor Drive Fuses (F3 & F4)

(4) Lock & Tag Actuator Drive Shaft

To Close Device


(2) Replace Motor Drive Fuses (F3 & F4)

(3) Close Disconnector using “Close’ Pushbutton

(4) Select Remote/Local Selection Switch to ‘Remote’

4. Drive Shaft Locking Position

3. Motor Drive Fuses (F3 & F4)

1. Remote/Local Selection Switch

2. Open/ Close Pushbuttons

Emergency Stop





3.16.2 Manual Operation

To Open Device

(1) Select Remote/Local Selection Switch to ‘Local’

(2) Remove Motor Drive Fuses (F3 & F4)

(3) Remove Actuator Drive Pin

(4) Insert Manual Operating Lever into socket on Pipe Fitting

(5) Open Disconnector


To Close Device

To Close Disconnector – Reverse the above Steps 1…6

Note: Oil pressure gauge to remain above 800 PSI when closed.

2. Motor Drive Fuses (F3 & F4)

1. Remote/Local Selection Switch

4. & 5. Insert Manual Handle & Open Disconnector

6. Lock & Tag

3. Remove Actuator Drive Pin





3.17 HML Schneider Automated Disconnector





3.18 Regulators

3.18.1 Longford Corner

TO BYPASS LONGFORD CNR REGULATORS

1. On each Control Panel – Select the Auto/Manual Switch to MANUAL 2. Select the Raise/Lower Switch to Reduce or Increase the Tap towards the Neutral Position (the Neutral LED will light up).

Important: This must be done 1 Tap at a time alternately on each Control Panel

3. Check that the Tap Position indicator on the exterior of the Regulators is on ‘ N ’.

Raise/Lower Switch

Auto/Manual Switch

Neutral Position LED

Power Int/Off/Ext Switch

Supervisory Switch





4. Select Power Int/Off/Ext Switch to ‘OFF’ 5. Close Bypass AK28 6. Open AK29 7. Open AK27

To Restore

1. Check all Regulator Controllers are on Manual and Neutral Tap. 2. Close AK27 3. Close AK29 4. Open AK28 5. Select all Regulator POWER Switches to ‘INT’. 6. Select all Regulator Control Panels to AUTO





3.18.2 Haupiri

To Bypass

1. On each Control Panel – Select the Auto/Manual Switch to MANUAL 2. Select the Raise/Lower Switch to Reduce or Increase the Tap towards the Neutral Position (the Green LED will light up).

Important: This must be done 1 Tap at a time alternately on each Control Panel

Raise/Lower Switch Auto/Manual

Switch

Neutral Position LED





3. Check that the Tap Position indicator on the exterior of the Regulators is on ‘ 0 ’.

4. Close Bypass DH81.

5. Open DH82.

6. Open DH80.

To Restore

1. Check both Regulators on Manual and Neutral Tap.

2. Close DH80.

3. Close DH82.

4. Open DH81.

5. Select both Regulator Control Panels to AUTO.





3.18.3 Cronadun

The regulator has 16 raise positions, 1 neutral position and 16 lower positions. 1. If the ‘L’ led on the controller is ON, the regulator is in one of the 16 lower positions 2. If the ‘R’ led on the controller is ON, the regulator is in one of the 16 raise positions 3. If both the ‘L’ and ‘R’ leds on the controller are out, the regulator is in the neutral position The neutral lamp on the regulator tank should be ‘ON’

TO REMOVE THE REGULATOR FROM SERVICE

1. Check the control unit & raise/lower the tap position until the neutral lamp is ‘ON’ (both ‘L’ & ‘R’

led’s will be OFF)

2. Move the selector switch to an OFF position

3. Steps 1 & 2 need to be completed for both units

4. Close bypass switch WA21

5. Open WA22

6. Open WA20

NEUTRAL LAMP





TO RESTORE REGULATOR TO SERVICE

1. Check bypass WA21 closed

2. Check control units in neutral position with selector switches in the OFF position

3. Close WA22

4. Close WA20

5. Open WA21 6. Return control selector switches to ‘AUTO’





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