Lucy Manual

Sabre VREa Installation, Operation and Maintenance Manual

=Sabre VREa - IOM

August 2007

LIOM01-010 - Issue 1

1

1

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2

VREa Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 PKN PKO

Front Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

5

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

6

TKT

TKU TKV

8

dÉåÉê~ä=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U pí~áåäÉëë=píÉÉä=d~ë=båÅäçëìêÉ= K=K=K=K=K=K=K=K=K=K=K U eçìëáåÖ==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U qÉÉJlÑÑ=`áêÅìáí=_êÉ~âÉê= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U oáåÖ=pïáíÅÜÉë= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U bñíÉåëáÄäÉ= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U léÉê~íáçå=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U qÉëí=c~ÅáäáíáÉë= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U fåíÉêäçÅâë= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U m~ÇäçÅâë= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K U qáãÉ=iáãáí=cìëÉ=mêçíÉÅíáçå=EqicF= =K=K=K=K=K=K=K=K V qicLaáêÉÅí=^ÅíáåÖ=qêáé=mêçíÉÅíáçå=póëíÉã= aá~Öê~ã= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K V

UKQ

UKR UKS

oÉÅÉáéí=~åÇ=píçê~ÖÉ=çÑ=råáí= K=K=K=K=K=K=K=K=K=K=K NM päáåÖáåÖ=aÉí~áäë= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K NM

9

SKPKN råáí=içÅ~íáçå= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NN

`~ÄäÉ=qÉêãáå~íáçå=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K NO bñíÉåëáÄäÉ=`çååÉÅíáçå= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K NP

7

b~êíÜáåÖ= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K NQ j~êëÜ~ääáåÖ=_çñ= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K NQ

NMKN NMKO NMKP NMKQ NMKR

j~áå=`áêÅìáí=oÉëáëí~åÅÉ=qÉëíë= K=K=K=K=K=K=K=K=K=K NR fåëìä~íáçå=êÉëáëí~åÅÉ=íÉëíáåÖ= =K=K=K=K=K=K=K=K=K=K NS es=qÉëíë=_ÉÑçêÉ=`~ÄäáåÖ= K=K=K=K=K=K=K=K=K=K=K=K=K=K NT

NNKN oÉãçíÉ=léÉê~íáçå=`çåÇáíáçåë=K=K=K=K=K=K=K=K=K QU NNKO j~åì~ä=léÉê~íáçå= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QU NNKP oÉãçíÉ=^Åíì~íçê=aáëÉåÖ~ÖÉ==K=K=K=K=K=K=K=K=K=K QU

TKPKN mçïÉê=cêÉèìÉåÅó=qÉëíáåÖ=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NT

TKQ TKR

m`_=C=iççã=fåëí~ää~íáçå=K=K=K=K=K=K=K=K=K=K=K=K=K=K QU oÉãçíÉ=^Åíì~íçê=råáí=fåëí~ää~íáçå= =K=K=K=K=K QU j~åì~ä=léÉê~íáçå= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QU b~êíÜ=léÉê~íáçå= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QU _çñ=pé~ååÉê=píçê~ÖÉ==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QU

11 Circuit Breaker Remote Actuator Option . . . . . . . 48

TKOKN N=âs=íÉëíK= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NT

TKP

léÉê~íáåÖ=`çåÇáíáçåë=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QS j~áåíÉå~åÅÉ=fåíÉêî~äë==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QS j~áåíÉå~åÅÉ=pÅÜÉÇìäÉ= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QS pcS=fëëìÉë= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K QT

10 Ring Switch Remote Actuator Option . . . . . . . . . . . 47

Commissioning Tests . . . . . . . . . . . . . . . . . . . . . . . . . . 15 TKN TKO

qÉëíáåÖ=oáåÖ=pïáíÅÜ=`~ÄäÉë==K=K=K=K=K=K=K=K=K=K=K QM qÉëíáåÖ=`áêÅìáí=_êÉ~âÉê=`~ÄäÉë= K=K=K=K=K=K=K=K=K QP

VKQKN pcS=d~ë=iÉ~â~ÖÉ==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= QT VKQKO pcS=d~ë=qçééáåÖ=ré==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= QT

SKRKN pïáíÅÜÄç~êÇë= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NP SKRKO _ìëÄ~ê=`çìéäáåÖ= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NQ SKRKP båÇ=`~éë==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NQ

SKS SKT

m~ÇäçÅâáåÖ=íç=éêÉîÉåí=çéÉê~íáçå= K=K=K=K=K=K=K=K= PR pïáíÅÜ=Ñêçã=Dj^fk=lkD=íç=DlccD= =K=K=K=K=K=K=K=K= PR pïáíÅÜ=Ñêçã=DlccD=íç=Dj^fk=lkÛ= =K=K=K=K=K=K=K=K= PS pïáíÅÜ=Ñêçã=DlccD=íç=Db^oqe=lkD= =K=K=K=K=K=K=K= PT pïáíÅÜ=Ñêçã=b^oqe=lkD=íç=DlccD= K=K=K=K=K=K=K=K= PU

Sabre Unit Maintenance . . . . . . . . . . . . . . . . . . . . . . . 46 VKN VKO VKP VKQ

p~ÄêÉ=sob~=råáí=cäççê=jçìåíáåÖ=aáãÉåëáçåë=

m~ÇäçÅâáåÖ=íç=éêÉîÉåí=çéÉê~íáçå= K=K=K=K=K=K=K=K= OU léÉê~íÉ=`_LqJlÑÑ=Ñêçã=DlkD=íç=DlccD=K=K=K=K=K= OU fëçä~íÉ=qJlÑÑ=Ñêçã=DlccD=éçëáíáçå= K=K=K=K=K=K=K=K= OV b~êíÜ=`_LqJlÑÑ=Ñêçã=Dfpli^qbD=éçëáíáçå= =K=K= PN oÉãçîÉ=b~êíÜ=Ñêçã=qJlÑÑ= K=K=K=K=K=K=K=K=K=K=K=K=K=K= PN léÉê~íÉ=`_LqJlÑÑ=Ñêçã=Dfpli^qbD=íç=DlkD= K= PO `äçëÉ=`_=íç=Ûpbosf`bÛ= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= PP

pïáíÅÜ=léÉê~íáçå==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K PR

UKQKN UKQKO UKQKP UKQKQ UKQKR

NN SKQ SKR

léÉåáåÖ=íÜÉ=j~áå=aççê= K=K=K=K=K=K=K=K=K=K=K=K=K=K OT lÄí~áåáåÖ=íÜÉ=léÉê~íáåÖ=e~åÇäÉ= =K=K=K=K=K=K OU `áêÅìáí=_êÉ~âÉê=léÉê~íáçå= =K=K=K=K=K=K=K=K=K=K=K=K OU

UKPKN UKPKO UKPKP UKPKQ UKPKR UKPKS UKPKT

SKOKN p~ÄêÉ=sob~=råáí==K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= NM

SKP

pÜìåí=qêáé=EáÑ=ÑáííÉÇF= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K OS ^ìñáäá~êó=táêáåÖ=pïáíÅÜ=íÉëíáåÖ= =K=K=K=K=K=K=K OS

Sabre Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 UKN UKO UKP

Sabre Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . 10 SKN SKO

smfp=C=kblk=fåÇáÅ~íáçå=EáÑ=ÑáííÉÇF= K=K=K=K=K=K OR

TKTKN máÅâìé=îçäí~ÖÉ=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= OR TKTKO `êçëëçîÉê=îçäí~ÖÉ= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= OR TKTKP mÜ~ëÉ=Åçãé~ê~íçê= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= OS

p~ÄêÉ=sob~=aáãÉåëáçåë=EfåÅäìÇáåÖ=`~ÄäáåÖ= _çñÉëF= K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K S p~ÄêÉ=sob~=pÅÜÉã~íáÅ=iáåÉ=aá~Öê~ã= K=K=K=K=K S

4

RKN RKO RKP RKQ RKR RKS RKT RKU RKV RKNM RKNN RKNO

TKSKN oÉä~ó=mêáã~êó=fåàÉÅíáçå=qÉëí=J=lîÉêÅìêêÉåí=qÉëí=OO TKSKO oÉä~ó=mêáã~êó=fåàÉÅíáçå=qÉëí=J=b~êíÜ=c~ìäí=qÉëí=OP TKSKP oÉä~ó=pÉÅçåÇ~êó=fåàÉÅíáçå=qÉëíë=J=lîÉêÅìêêÉåí= ~åÇ=b~êíÜ=c~ìäí=qÉëí= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= OQ

bäÉÅíêáÅ~ä=qÉëíë=^ÑíÉê=`~ÄäáåÖ==K=K=K=K=K=K=K=K=K=K NU qic=qóéÉ=mêçíÉÅíáçå=qÉëíë= K=K=K=K=K=K=K=K=K=K=K=K=K NU

TKRKN qic=mêáã~êó=fåàÉÅíáçå=qÉëí=J=lîÉêÅìêêÉåí=qÉëí=NU TKRKO qic=mêáã~êó=fåàÉÅíáçå=qÉëí=J=b~êíÜ=c~ìäí=qÉëí=NV TKRKP qic=pÉÅçåÇ~êó=fåàÉÅíáçå=qÉëíë=J=lîÉêÅìêêÉåí= qÉëí= =K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K=K= OM TKRKQ qci=pÉÅçåÇ~êó=fåàÉÅíáçå=qÉëí=J=b~êíÜ=c~ìäí=qÉëí=ON

TKS

oÉä~ó=qóéÉ=mêçíÉÅíáçå=qÉëíë= K=K=K=K=K=K=K=K=K=K=K OO

=Sabre VREa - IOM

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2

Validity This manual was produced in August 2007 and applies to the Sabre VREa unit only. Due to W.Lucy’s policy of continuous research and development, W.Lucy reserves the right to change the design and specification of it’s products without prior notice.

Safety

Operators of this equipment must have experience and expertise with switchgear. To prevent personal injury or equipment damage this manual must be read carefully.

This manual MUST be readily available whenever the unit is handled or operated.

If this equipment suffers from any fault or damage, contact the manufacturer and/or supplier immediately.

=Sabre VREa - IOM

August 2007


3

1 General Description The Sabre VREa is compact SF6 insulated Vacuum Ring Main Unit (RMU) - Extensible. Designed to be used both indoors and outdoors, the unit has a long service life and requires virtually zero maintenance.

Unit Shown - Sabre VRE2a

2 VREa Range •

Sabre VRE2a

•

Sabre VRE2a - Left Hand Extensible Only

•

Sabre VRE2a - Right Hand Extensible Only

•

Sabre VRE6a

•

Sabre VRE6a with T-Off Test Access

•

Sabre VRE6a - Left Hand Extensible Only

•

Sabre VRE6a - Left Hand Extensible Only with T-Off Test Access

•

Sabre VRE6a - Right Hand Extensible Only

•

Sabre VRE6a - Right Hand Extensible Only with T-Off Test Access

=Sabre VREa - IOM

August 2007


4

3 Technical Data (Ratings in brackets are optional).

Rated Voltage Impulse Withstand Voltage

Sabre VRE2a

Sabre VRE6a

12kV(15.5kV)

12kV(15.5kV)

75kV(95kV)

75kV(95kV)

Ring Switches

630A

630A

Busbar

630A

630A

Tee-Off Circuit Breaker

250A

630A

Ring Switches

50kA

50kA


50kA

50kA

Short Circuit Breaking Current


20kA RMS

20kA RMS

3 Second Short Time Current

Ring Switches

20kA

20kA


20kA

20kA

Ring Switches

50kA

50kA

Normal Current

Short Circuit Peak Making Current

Earth Switch Peak Making Current


7.9kA

50kA

20kA 1 sec

20kA 1 sec

12.5kA 1 sec

12.5kA 1 sec

0 Bar G

0 Bar G

IP Rating

Up to IP54W

Up to IP54W

Weight *

375kg

375kg

BS EN 60265-1

BS EN 60265-1

BS EN 60129

BS EN 60129

BS EN 60694

BS EN 60694

BS EN 60298

BS EN 60298

Internal Arc Rating Optional Cable Boxes Internal Arc Rating

Standard Type

Gas pressure

Min Operating Pressure

Testing standards

IEC 60056

IEC 60056

ENA TS 41-36

ENA TS 41-36

IEC 62271-102

IEC 62271-102

IEC 62271-100

IEC 62271-100

IEC 62271-103

IEC 62271-103

* The weight stated is nominal and includes two ring switch cable boxes.

=Sabre VREa - IOM

August 2007


5

3.1

Sabre VREa Dimensions (Including Cabling Boxes)

Dimensions in millimetres

3.2

Sabre VREa Schematic Line Diagram

Non T-Off Test Access Version

=Sabre VREa - IOM

T-Off Test Access Version

August 2007


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4 Front Panel Layout N O P Q R OM

S

NV

T

NU

U

NT NS NR V

NQ

NM NN NP

NO Sabre VREa Unit Shown

Key 1. Fascia / Front Panel

15. Ring Switch 1 Indicator

2. Optional 'Pull to Trip' Knob & 'Tripped on Fault' Indicator Blanks

16. Ring Switch 1 Operating Aperture

3. Circuit Breaker/T-Off Operation Slot 4. Circuit Breaker/T-Off Indicator 5. Circuit Breaker/T-Off Selector 6. Disconnector Operation Slot

17. Circuit Label - Customer customization 18. Optional VPIS plates for LH/RH Ring switches & CB/T-Off 19. SF6 Top up Valve - Hansen coupling 20. Pressure Indicator 21. Operating Handle

7. Disconnector Indicator (Service/Earth) 8. Disconnector Padlock Flap 9. Ring Switch 2 Indicator

Operating Handle stowed on the inside of the door

10. Ring Switch 2 Selector 11. Ring Switch 2 Operating Aperture 12. Cable Test Access Cover 13. Ring Switch 1 Selector

ON

14. Door

=Sabre VREa - IOM

August 2007


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5 Design 5.1

General

The Sabre VREa is a extensible RMU comprising of a tee-off vacuum circuit breaker and two fault-make load break ring switches contained within a common SF6 gas insulated stainless steel enclosure. The unit is suitable for both indoor and outdoor applications and can be used as a freestanding unit.

5.2

Stainless Steel Gas Enclosure

The gas enclosure is manufactured from stainless steel and fabricated utilising automatic 'robot welding' techniques to produce consistent leak- free equipment.

5.3

Housing

The housing of the Sabre VREa is fully treated; using zinc coated steel and electrostatically applied oven cured paint, to resist weather and pollution attacks. All units are provided with a hinged, weatherproof and lockable door. The external support legs provide a Extensible bushing height of 1072mm.

5.4


The tee-off circuit breaker comprises of three vacuum interrupters, which have a fault-make, fault-break rating. Opening of the circuit breaker is achieved by manually operating the handle as standard. Earthing of the outgoing cable, from the tee-off circuit breaker, is achieved by the use of the circuit breaker in series with the off-load disconnector/selector switch.

5.5

Ring Switches

The two ring switches are of the single break, fault-make / load- break 3 position types, 'ON', 'OFF' and 'EARTH'.

5.6

Extensible

The extensible bushings are available in three versions: Left Hand Only, Right Hand Only and Both Left and Ring Hand. All versions have a extensible bushing height of 1072mm.

5.7

Operation

All operating positions and instructions are indicated on the main panel at the front of the unit. Operation is by means of manually independent mechanisms, which are mounted externally to the gas enclosure. The tee-off vacuum circuit breaker has two operating positions, 'ON' or 'OFF', with an off-load, interlocked selector allowing isolation & earthing of the tee-off circuit. A single, "Y"-bar type operating handle is stored at the front door. Symbols located on the end of the operating handle indicate direction of operation.

5.8

Test Facilities

The Sabre VREa has fully interlocked integrated ring switch cable test facilities in accordance with ENATS 41-36 requirements. Access to the test terminals is achieved by pulling a lever located on the front fascia inside the front door. This will allow the cover underneath the unit to drop down. The optional roof access to the circuit breaker test terminals is achieved by rotating the ‘Test Access Cover Release’ handle in an anticlockwise direction (see Section 8.6 Testing Circuit Breaker Cables on page 39). Note: The cover will only open when ‘CB Test Interlock’ is in the ‘unlock’ position.

5.9

Interlocks

Positive safety interlocks are incorporated on all switch positions.

5.10 Padlocks The door has a quarter-turn lock that can be padlocked. The handle has a padlock hasp hole size 8mm diameter.

All switch and selector positions can be padlocked. The padlock hasp hole size is 8.5mm diameter.

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5.11 Time Limit Fuse Protection (TLF) Access for CT ratio change is provided by means of a cover plate on the front panel of the unit. Recommended TLF Settings

Voltage Transformer Rate Power (kVA) TLF

(kV)

200

3.3

10A

LV Fuse

CT Ratio 50/5

TLF TLF

6.6 11

LV Fuses TLF

13.8

LV Fuses TLF

3.3

LV Fuses TLF

CT Ratio 100/5

6.6

LV Fuses TLF

earth fault setting = 30A (instantaneous trip)

800

5A

10A

15A

150A

250A

400A

3A

5A

10A

15A

200A

300A

400A

560A

3A

5A

10A

15A

200A

300A

400A

560A

5A

10A

15A

150A

250A

400A

1000

1250

1600

5A

7.5A

12.5A

15A

250A

400A

560A

560A

5A

7.5A

10A

12.5A

15A

400A

560A

630A

630A

630A

11

LV Fuses TLF

500

150A

LV Fuses earth fault setting = 25A (instantaneous trip)

315

13.8

LV Fuses

5A

7.5A

10A

12.5A

15A

400A

560A

630A

630A

630A

5.12 TLF/Direct Acting Trip Protection System Diagram

=Sabre VREa - IOM

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6 Sabre Unit Installation

Electrical testing done during the commissioning phase of installation is to be completed by competent and responsible electrical personnel only.

6.1

Receipt and Storage of Unit

Units are shipped with covers closed and bolted, (all switches are in the closed position), with temporary protective covers over TeeOff bushings if transformer mounted. If the units are to be stored for long periods, a dry well ventilated area should be provided. Covers should be left closed to minimise breathing – especially in situations with wide daily temperature variations. The Sabre VREa unit undergoes strict quality checks during manufacturing and despatch at the Lucy production facility, prior to it being delivered to the customer. Ensure that during transit the unit has not sustained any damage, if so then contact the manufacturer and/or supplier immediately. DO NOT OPERATE the unit if it is damaged.

6.2

Slinging Details

6.2.1 Sabre VREa Unit The unit should always be lifted by using all four of the 'eye' hooks. These are located on top of the unit as shown:

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6.3

Sabre VREa Unit Floor Mounting Dimensions The units are designed for bolting down onto a concrete plinth using 4 - M16 bolts.

View From Above Unit

6.3.1 Unit Location Authorities will have their preferred instructions for the installation of electrical equipment and these must be adhered to. If none are available, however, the following sequence is recommended. 1. Prepare the plinth, casting in floor chases in accordance with the Company's contract or arrangement drawings. 2. Locate the unit, loosely assemble the floor fixings and grout in the rag bolts. 3. When the cement has hardened, tighten the fixings - shimming under the unit base as required to level the unit and ensure that it rests equally at each fixing.

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6.4

Cable Termination

The bushings for each ring switch are located either side of the unit. Both sets of bushings are type ‘C’ with in-line bolted connections M16 threaded in accordance with EN50181. The tee-off bushings are located at the rear of the unit and are in-line bolted connections M12 threaded. If cabling boxes are fitted, then the bushings are accessible by removing the cabling box side cover. The maximum cable size that can be used is: •

300mm² 3 - core

•

500mm² single - core.

The following types of terminations can be used with the Sabre VREa:

Ring Switch Bushings Insulating Bushing Boot

Profile “C” Plug-In Connector

Heat Shrink Insulating Bushing Boot

Tee-off Taper Kit

Tee-off Bushings Insulating Bushing Boot

Contact W Lucy for further cable termination details

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12

Torque Settings On Cable Bushings M16 into copper

- 75Nm

Note: It is also recommended to have at least 1.5X thread into bushing, e.g. screw 18mm into M12 hole.

M12 copper thread or into copper - 35Nm Cables can be routed either side of the unit, via trenches, passages or ducts, depending on the type of cable boxes and gland plates fitted. Shown below is a typical cable routing arrangement .

Both T-Off and ring cable boxes have removable panels for increase in accessibility. Standard ring switch cable box shown.

6.5

Extensible Connection

6.5.1 Switchboards Installation Details 1. When assembling a switchboard refer to the contract drawing - noting that two lengths of busbar joints (425mm and 275mm) are available. 2. Vertical alignment is important allowing a maximum variation of 3mm to ensure trouble-free busbar connection. 3. Make the interunit busbar joints as per manufacturers instructions. 4. Fit end caps to unused exposed busbars. 5. Ensure that the earthing system is properly connected between each units. 6. Thereafter, the commissioning, routine maintenance etc. can be undertaken as detailed for the standard ring main. Typical Switchboard Arrangement

The Shorter 275mm busbar coupling may only be used between units that have no adjacent cabling boxes or no circuit breaker motorisation (as shown in diagram between the VCEa and SSEa units).

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6.5.2 Busbar Coupling The extensible busbar joints can be insulated using heat shrinkable joint kits available. Ensure relevant manufacturers instructions are followed when using busbar joint kits.

For details of Lucy Switchgear busbar joints kit, refer to document ‘Sabre External Busbar Kit - LIOM01-014’. 6.5.3 End Caps For any exposed busbars, heat shinkable end cap kits are available. Ensure relevant manufactures instructions are followed when using end caps.

6.6

Earthing

The Sabre VREa unit should be earthed at either of the primary earth points. These earth points are located at the rear of the unit, either side of the Cable Test Access Cover as shown.

Primary Earth Point

6.7

Marshalling Box

The marshalling box located on the left hand side of the unit and houses the terminals for all customer options including ring switch actuators, pressure switch and EFI CT’s.

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14

7 Commissioning Tests 7.1

Main Circuit Resistance Tests

NOTE: It is recommended that Electrical Circuit Resistance readings are taken. This is to ensure good working order of all moving parts inside the unit, and to make sure the unit is safe to operate for testing. Resistance readings should be taken for the following circuit path for each phase: Ring switch 1 to ring switch 2 Ring switch 1 to T-Off Ring switch 2 to T-Off Extensible bushing to T-Off Extensible bushing to ring switch These readings taken are to be compared with the following maximum values. Circuit

Resistance Value (microhms)

Ring Switch To Ring Switch

200

Ring Switch To T-Off

300

Extensible Bushing To T-Off

200

Extensible Bushing To Ring Switch

150

Any readings which are above these maximum values should be reported to appropriate supervising personal for review.

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7.2

Insulation resistance testing

Insulation resistance testing is conducted at 1kV in accordance with international standards In addition to this, the Sabre VREa unit is also tested at 2kV during the manufacturing process and is not required to be retested at this voltage level 7.2.1 1 kV test.

•

oÉãçîÉ=íÜÉ=É~êíÜ=äáåâ=EëÉÉ=ÄÉäçïFK

•

Where units are not fitted with a removable earth link, ensure all earths are removed from the unit, both internally and externally.

•

If protection relays are fitted remove the relay from its housing on the front of the unit before commencing test.

•

Attach the black (negative) lead of the test set to the unit at any point where a bolted connection is present (nut etc.).

•

Using the red (positive) lead as a probe, test each of the connections located on the terminal block in the Marshalling box for approx 2 seconds.

•

Any indication of continuity should be investigated and rectified.

Removal of the Earth link

1. Position of earth link

=Sabre VREa - IOM

2. Lift link with finger.

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3. Rotate the link completely away from the terminal.


16

7.3

HV Tests Before Cabling

The following tests are to be undertaken AFTER ensuring the Main Circuit Resistance’ readings are within specification (Section ’7.1 Main Circuit Resistance Tests’ on page 15). For HV tests, the circuit breaker must be in the ‘ON’ position, and the following tests be taken through the cable terminals. •

Measure the insulation resistance to earth of each of the three terminals in turn, with the other two earthed. The readings should not be less than 100 megohms, lower values may indicate damaged or dirty insulation.

WARNING: THE FOLLOWING TESTS SHOULD NOT BE UNDERTAKEN IF THESE READINGS ARE LESS THAN 100 MEGOHMS. 7.3.1 Power Frequency Testing These test values are to IEC 60694. Conduct these tests as follows: •

Ensure unit has correct gas pressure.

•

Ensure the tripper is shorted out before testing.

•

Ensure the VPIS (if fitted) is shorted to earth.

•

Follow the test schedule below (see diagram for labelling).

•

Apply test voltages as per table below.

•

The test is considered acceptable when neither breakdown or flashover has occurred (where necessary, fit additional insulation onto the bushings).

Test Schedule Test

RH Ring Switch

LH Ring Switch

Disconnector

CB Switch

Apply Test Voltage To:

Earth

Test Phase To Phase And Phase To Earth. 1

Closed

Closed

Service

Closed

U1, W1

Frame, V3

2

Closed

Closed

Service

Closed

V1

Frame, U3, W3

3

Closed

Closed

Service

Open

U1, V1, W1

U3, V3, W3

4

Open

Open

Service

Closed

U1, V1, W1, U2, V2, W2

U3, V3, W3

Test Voltages (Represent 80% of the routine factory test voltage) Test

12kV

15.5kV

Duration (Mins)

Fit Insulation Caps And Adaptors

1

22.4kV

30.4kV

1

Yes

2

22.4kV

30.4kV

1

Yes

3

25.6kV

36kV

1

Yes

4

25.6kV

36kV

1

Yes

7.4

Electrical Tests After Cabling

Switch one of the ring switches into the ‘EARTH ON’ position, slide the ‘Ring Switch Selector’ into the centre position, then open the cable test access cover (Section ’8.5 Testing Ring Switch Cables’ on page 37). Apply a test voltage of 25kV dc (or as specified by network owner) to earth for 15 minutes. Repeat tests on the other ring switch.

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7.5

TLF Type Protection Tests

Please Note: The following test diagrams in this section are generic and explanation purposes only for TLF type systems. Although only 100/5 and 50/5 ratios have been used, all ratios must be tested using diagram supplied with each unit. For relay type protection systems, refer to Section 7.6 Relay Type Protection Tests on page 22, or alternately consult the appropriate relay technical documentation. 7.5.1 TLF Primary Injection Test - Overcurrent Test •

Ensure the ring switch and circuit breaker are closed.

•

Setup test as shown, ensuring the removable earth link & test link are fitted and closed.

•

Ensure 3 phase shorting link (100A rating) is fitted as shown and replace TLF on the L1(R) and L3(B) phases with temp links.

•

Inject current as shown on each appropriate test phase, each time changing short links where appropriate, see table.

•

Repeat for each phase.

•

Repeat for each ratio - values to be recorded if necessary.

Test Phase

TLF Shorting Link

Circuit Breaker Action

IN

Removed

L1(R) - L2(Y)

L1(R)

L3(B)

No Trip

L1(R) - L2(Y)

L3(B)

L1(R)

Trip

L2(Y) - L3(B)

L3(B)

L1(R)

No Trip

L2(Y) - L3(B)

L1(R)

L3(B)

Trip

L1(R) - L3(B)

L1(R)

L3(B)

Trip

L1(R) - L3(B)

L3(B)

L1(R)

Trip

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7.5.2 TLF Primary Injection Test - Earth Fault Test •

Ensure the ring switch and circuit breaker are closed and test link is fitted and closed.

•

Setup test as shown, ensuring the removable earth link, test link and appropriate CT radio is fitted and closed, with the appropriate CT ratio selected.

•

Ensure TLF on L1(R) & L3(B) phases has shorting links fitted.

•

Inject primary current on appropriate test phase (instantaneously), for appropriate trip values given in the table below.

•


•


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L1(R)

50/5

25 - 30A

R&B

Trip

L2(Y)

50/5

25 - 30A

R&B

Trip

L3(B)

50/5

25 - 30A

R&B

Trip

L1(R)

100/5

30 - 40A max

R&B

Trip

L2(Y)

100/5

30 - 40A max

R&B

Trip

L3(B)

100/5

30 - 40A max

R&B

Trip

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7.5.3 TLF Secondary Injection Tests - Overcurrent Test •

Ensure the circuit breaker is closed.

•

Setup test as shown, ensuring the removable earth link and test link are fitted and are both closed.

•

Ensure shorting link is fitted to the L1(R) & L3(B) TLF terminals.

•

Select phase to be tested, L1(R)-L2(Y), L2(Y)-L3(B) or L3(B)-L1(R).

•

Inject secondary current as shown on each appropriate test phase. This should be no more than 5A, each time changing shorting links where appropriate, see table below. Please ensure correct CB action occurs.

•


•


Test Phase

TLF Shorting Link

Circuit Breaker Action

IN

Removed

L1(R) - L2(Y)

L1(R)

L3(B)

No Trip

L1(R) - L2(Y)

L3(B)

L1(R)

Trip

L2(Y) - L3(B)

L3(B)

L1(R)

No Trip

L2(Y) - L3(B)

L1(R)

L3(B)

Trip

L1(R) - L3(B)

L1(R)

L3(B)

Trip

L1(R) - L3(B)

L3(B)

L1(R)

Trip

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7.5.4 TFL Secondary Injection Test - Earth Fault Test •

Ensure the ring switch and circuit breaker are closed, and that the test link is fitted and closed.

•

Setup test as shown, ensuring the removable earth link & test link are fitted and closed, and that the appropriate CT ratio is selected.

•

Ensure TLF on L1(R) & L3(B) phases has shorting links fitted.

•

Inject secondary current on appropriate test phase (instantaneously), for appropriate trip values given in table below.

•


•


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L1(R)

50/5

2.0 - 2.7A

R&B

Trip

L2(Y)

50/5

2.0 - 2.7A

R&B

Trip

L3(B)

50/5

2.0 - 2.7A

R&B

Trip

L1(R)

100/5

1.2 - 1.65A

R&B

Trip

L2(Y)

100/5

1.2 - 1.65A

R&B

Trip

L3(B)

100/5

1.2 - 1.65A

R&B

Trip

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7.6

Relay Type Protection Tests

Please Note: The following test diagrams in this section are generic and only explanation purposes for relay type systems. Although only 200/1 and 100/1 ratios have been used, all ratios must be tested using diagram supplied with each unit. For TLF type protection systems, refer to the Section 7.5.1 TLF Primary Injection Test - Overcurrent Test on page 18, or alternately consult the appropriate TLF technical documentation. 7.6.1 Relay Primary Injection Test - Overcurrent Test •


•


•

Ensure the 3 phase shorting link (100A rating) is fitted as shown.

•

Setup relay for overcurrent test, including settings.

•

Apply the appropriate test current to the relay setting and CT ratio.

•


•


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7.6.2 Relay Primary Injection Test - Earth Fault Test •


•


•

Setup relay for earth fault test, including settings.

•

Apply the appropriate test current to the relay setting and CT ratio.

•


•


7.6.3 Relay Secondary Injection Tests - Overcurrent and Earth Fault Test Consult the appropriate relay technical documentation for recommended secondary injection procedure, commissioning checks and any necessary equipment required.

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7.7

VPIS & NEON Indication (if fitted)

Both VPIS (voltage presence indication system) & neon indication systems are available as an option. The VPIS system is generally in accordance with IEC 61958 and is complete with voltage limiting devices to ensure safety in the event of an insulation failure. VPIS can be used to test both for correct phase orientation of cables and for the presence of voltage. The VPIS system can be the Pfisterer type (4mm sockets HR system using relevant HR adapters) which comply with IEC 61243-5 either with or without push button neons.

Pfisterer Type 4mm Sockets The following checks should be made during commissioning where applicable. 7.7.1 Pickup voltage For a 12kV unit this value will be below 5kV. •

Using a high voltage test set, apply the appropriate voltage to the unit between the selected phase (left or right side) and earth.

•

Insert the appropriate neon test device into the relevant socket and check that voltage presence is indicated by the flashing neon (in some cases the flashing may be very rapid and appear as continuous).

7.7.2 Crossover voltage Once it is determined that the Neon indicators are functional and correct pickup values determined, proceed to completing a crossover check. Test as follows: •

Using a high voltage test set, apply the appropriate voltage to the unit between the selected phase (left or right side) and earth. For 12kV units this is normally 6.9kV.

•

Insert a neon indicator into the appropriate phase and check operation.

•

With power maintained on the unit, check each of the other phase neon's (both left and right) for any indication of voltage. There should be no indication on the other phases.

7.7.3 Phase comparator The Pfisterer phase comparator can be used to determine correct phase connection of a cabled unit. Test as follows: •

Ensure both ring switches are open if the HV cables are going to be used to carry out the test.

•

For 12kV and higher system voltages, ensure the HR - LRM adapter is inserted into the sockets (or the phono/Pfisterer converter).

•

Connect the comparator according to the manufacturer's instructions and check the unit for correct connection of phase cables according to the coloured lights.

•

The comparator can also be used as a neon voltage presence indicator.

Pfisterer Type 4mm Sockets

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7.8

Shunt Trip (if fitted)

Where shunt trip terminals have been fitted in the marshalling box, the following procedure is to be followed to ensure effective operation of the shunt trip device. •

Locate the shunt trip terminals on the marshalling box using the supplied wiring diagram to confirm the terminal numbering.

•

Using appropriate test set, apply voltage to the two previously identified terminals.

Note: • If the unit is fitted with a DC shunt coil then tests should be done at 70% & 110% rated voltage. •

If the unit has an AC coil fitted, then testing should be done at 85% & 110% of rated voltage.

•

The unit should trip.

•

The operation of the shunt trip device is thereby confirmed. Any unexpected tripping operation during testing should be investigated and reported to the appropriate responsible person/supervisor.

7.9

Auxiliary Wiring Switch testing

Auxiliary wiring should be checked for continuity as well as various auxiliary switches and contacts. Please refer to the supplied marshalling box wiring diagram. The following are to be checked on the unit, to ensure correct operation, before completing installation: •

Ring switch auxiliary contacts.

•

CB/T-Off auxiliary contacts.

•

Motorization indication circuits - operation of motor actuation should be checked if fitted/supplied with the unit.

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8 Sabre Operation

Check the pressure indicator on the front panel, behind main door. Ensure the pointer is in the green zone before any switching operations are carried out.

8.1

Opening the Main Door

1. Open the door by turning handle clockwise by 90°.

8.2

2. When the door catch releases open the main door.

Obtaining the Operating Handle

1. Operating handle in stowed position inside main door.

=Sabre VREa - IOM

2. Lift handle and remove as shown.

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8.3

Circuit Breaker Operation

8.3.1 Padlocking to prevent operation 1. Slide the 'Disconnector Padlock Flap' to the right to lock all CB/Tee-Off operations and lock flap using a padlock as shown.

8.3.2 Operate CB/T-Off from 'ON' to 'OFF' 1. Insert the operating handle into the 'Circuit Breaker Operation Slot' as shown.

Remove padlock for operation 2. Remove padlock from the 'Disconnector Padlock Flap', then slide the selector left to the 'CB AND DISCONNECTOR FREE' position.

2. Firmly lift the operating handle up from the 'ON' to the 'OFF & RESET' position.

The circuit breaker indicator will now show 'off' as shown:

3.Remove operating handle. ! Note: Ensure the 'Disconnector Padlock Flap' is in the 'CB AND DISCONNECTOR FREE' position before operation (Section ’8.3.1 Padlocking to prevent operation’ on page 27). =Sabre VREa - IOM

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8.3.3 Isolate T-Off from 'OFF' position 1. With the circuit breaker in the 'OFF & RESET' position (Section ’8.3.2 Operate CB/T-Off from 'ON' to 'OFF'’ on page 27), slide the 'Circuit Breaker/T-Off Selector' to the 'DISCONNECTOR' (centre) position as shown.

2. Insert the operating handle into the 'Disconnector Operation Slot' as shown.

3. Firmly lift the operating handle up from the 'SERVICE' to the 'ISOLATE' position.

The CB/T-Off Disconnector indicator will now show 'Isolated' and 'Earth Selected' as shown:

4. Remove operating handle.

! Note: Ensure the 'Disconnector Padlock Flap' is in the 'CB AND DISCONNECTOR FREE' position before operation (Section ’8.3.1 Padlocking to prevent operation’ on page 27). =Sabre VREa - IOM

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8.3.4 Earth CB/T-Off from 'ISOLATE' position 1. With the circuit breaker 'OFF' and the Disconnector in 'ISOLATE', slide the 'Circuit Breaker/T-Off Selector' left to the 'CB EARTH' position as shown.

2. Insert the operating handle into the 'Circuit Breaker Operation Slot' as shown.

3. Firmly pull the operating handle down from the 'OFF’ & ‘RESET' to 'ON' position.

The circuit breaker indicator will now show 'earth on' as shown:



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8.3.5 Remove Earth from T-Off 1. Insert the operating handle into the 'Circuit Breaker Operation Slot' as shown.

2. Firmly lift the operating handle up from the 'ON' to the 'OFF & RESET' position.

The circuit breaker indicator will now show 'off' as shown:



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8.3.6 Operate CB/T-Off from 'ISOLATE' to 'ON' 1. With the circuit breaker in the 'OFF & RESET' position (Section ’8.3.5 Remove Earth from T-Off’ on page 30), slide the 'Circuit Breaker/T-Off Selector' to the 'DISCONNECTOR' (centre) position as shown.

2. Insert the operating handle into the 'Disconnector Operation Slot' as shown.

3. Firmly pull the operating handle down from the 'ISOLATE' to 'SERVICE' position.

The CB/T-Off Disconnector indicator will now show 'Service' as shown:



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8.3.7 Close CB to ’SERVICE’ 1. Slide the 'Circuit Breaker/T-Off Selector' to the 'CB SERVICE' position as shown.

2. Insert the operating handle into the 'Circuit Breaker Operation Slot' as shown.

3. Firmly pull the operating handle down from the 'OFF & RESET' to 'ON' position.

The circuit breaker indicator will now show 'on' as shown:



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8.4

Switch Operation

The movement of the ‘Ring Switch Selector’ can be restricted depending on the position of the ‘Ring Switch’. Full ‘Ring Switch Selector’ movement is only available with the ‘Ring Switch’ in the ‘Off’ position. 8.4.1 Padlocking to prevent operation 1.With either of the 'Ring Switches' in any position, the corresponding 'Ring Switch Selector' can be slid into the centre position and padlocked, preventing any operation of the ring switch.

8.4.2 Switch from 'MAIN ON' to 'OFF' 1. Slide the 'Ring Switch Selector' to the 'Main Switch' position as shown.

2. Locate the operating handle to the 'Ring Switch'.

3. Rotate the operating handle from the 'MAIN ON' to the 'OFF' position as shown. Note the arrow directions on the handle.

The 'Ring Switch' indicator will now show 'OFF' as shown:

4. Padlock the 'Ring Switch Selector' in the centre position to prevent operation (Section ’8.4.1 Padlocking to prevent operation’ on page 33). =Sabre VREa - IOM

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8.4.3 Switch from 'OFF' to 'MAIN ON’ 1. Slide the 'Ring Switch Selector' to the 'MAIN SWITCH' position as shown.


3. Rotate the operating handle from the 'OFF' to the 'MAIN ON' position as shown. Note the arrow directions on the handle.

The 'Ring Switch' indicator will now show 'MAIN ON' as shown:

4. Padlock the 'Ring Switch Selector' in the centre position to prevent operation (see Section ’8.4.1 Padlocking to prevent operation’ on page 33).

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8.4.4 Switch from 'OFF' to 'EARTH ON' 1. Slide the 'Ring Switch Selector' to the 'EARTHING SWITCH' position as shown.


3. Rotate the operating handle from the 'OFF' to the 'EARTH ON' position as shown. Note the arrow directions on the handle.

The 'Ring Switch' indicator will now show 'EARTH ON' as shown:


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8.4.5 Switch from EARTH ON' to 'OFF' 1. Slide the 'Ring Switch Selector' to the 'EARTHING SWITCH' position as shown.


3. Rotate the operating handle from the 'EARTH ON' to the 'OFF' position as shown. Note the arrow directions on the handle.

The 'Ring Switch' indicator will now show 'OFF' as shown:


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8.5

Testing Ring Switch Cables

For this operation, please ensure the relevant ring switch is in the 'EARTH ON' position and the 'Ring Switch Selector' is in the centre position, padlocked if applicable (as shown) as the cable test access cover is NOT interlocked.

1. Open cable test access cover by holding the test box, pulling the access knob forward, and then lower the test access cover.

3. Insert the operating handle into the star point earth bar and pull down away from the bushings.

2. Move the interlock flap out of the way of the required ring switch test bushings.

4. When the star point earth bar is clear from all the bushings, remove the operating handle and allow to pivot down into the access cover as shown.

5. Test connections can be now made onto the bushings marked with the relevant phase (red, yellow, blue or L1, L2, L3).

Note: With the star point earth bar removed access to operate the ring switch is prevented.

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Returning star point earth bar to its closed position. 6. Close the star point earth bar by pivoting it towards the bushings by hand. Move the padlock flap clear, then insert the handle into the socket and drive the earth bar firmly onto the bushings. Ensure full contact of the earth bar onto the 3 bushing contacts.

7. Close the 'Test Access Cover' by lifting and ensuring catch lock is located fully.

The ring switch can now be operated 'EARTH ON' to 'OFF' (see Section ’8.4.5 Switch from EARTH ON' to 'OFF'’ on page 36). Ring Switch Cable Test Padlock Facility Access to the star point earth bars can be prevented by using a padlock for each ring switch as shown.

To allow access to a star point earth bar, remove the padlock on the side of the required earth bar, then slide the padlock flap clear.

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8.6

Testing Circuit Breaker Cables

As the CB cable test access cover is interlocked, for this operation please ensure the CB/T-Off Disconnector is selected to ‘ISOLATED’ (see Section 8.3.3 Isolate T-Off from 'OFF' position on page 28) and that the CB is closed to ‘EARTH’ (see Section 8.3.4 Earth CB/T-Off from 'ISOLATE' position on page 29). 1. Slide the ‘Disconnector Padlock Flap’ to the right.

2. Push the CB cable test access cover knob in and rotate clockwise 60°.

3. Rotate the handle anti-clockwise on top of the access cover and lift up the cover.

4. Rotate the handle access flap up.

5. Insert the handle into the end of the removable star point earth bar.

6. Lift the handle up removing the star point earth bar from the bushings.

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7. Pivot the star point earth bar away from all the bushings as shown.

8. Test connections can be now made onto the bushings with the relevant phases (L1, L2 & L3).

Returning Star Point Earth Bar To Its Closed Position 9. Close the star point earth bar by pivoting it back down firmly onto the bushings. Ensure full contact of the earth bar onto the 3 bushings contacts.

10. Remove handle, rotate the handle access flap back down and close the access cover.

11. Rotate the handle clockwise to lock the access cover.

11. To fully interlock the cover, turn the CB cable test access cover knob anti-clockwise 60° and allow the to spring out.

T-Off Cable Test Padlock Facility Access to the t-off cable test facility can be prevented by using a padlock on the access cover as shown.

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9 Sabre Unit Maintenance 9.1

Operating Conditions

'Ideal' in-service conditions •

Unit is to be installed and commissioned in accordance with manufacturers instructions.

•

Humidity below 40% with no dripping water.

•

Indoors completely protected from the weather.

•

Minimal dust and adequate air circulation.

•

Ambient temperature between -5 ºC and 40ºC.

•

No contact with chemical agents.

•

No infestation of any animals.

•

No contact with any plant life.

•

No foundation movements.

•

No damage to the unit of any kind.

'Standard' in-service conditions •

Unit is to be installed and commissioned in accordance with manufacturers instructions.

•

Humidity below 60%.

•

Unit used indoors or outdoors, but not subjected to extreme weather conditions eg: ice, snow, dust storms, heavy rain etc.

•

Ambient temperature between -25 ºC and 40ºC.

•

No regular or thick covering of leaves or debris.

•

No contact with chemical agents.

•

No infestation of any animals.

•

No contact with any plant life.

•

No foundation movements.

•

No damage to the unit of any kind.

'Aggressive Conditions' are any other conditions not covered in the description of IDEAL and STANDARD conditions.

9.2

Maintenance Intervals

The following maintenance intervals should be adhered to for optimal operation of the unit.

Conditions

9.3

'Ideal'

'Standard'

'Aggressive'

Gas Enclosure

No Attention

No Attention

No Attention

Housing Interior

No Attention

No Attention

Every 5 Years

Housing Exterior

No Attention

Every 5 Years

Every 2 Years

Maintenance Schedule

The following is the recommended maintenance schedule for the Sabre VREa: Gas Enclosure: No routine maintenance required. Housing Interior: Performed with the main door open if the unit is an outdoor unit. Outdoor Unit: •

Check the condition of the main door seal

•

Check the inside of the door for: - Heavy dust deposits - Water ingress - Contamination by animal, insect or plant life

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Indoor and Outdoor Units: •

Check that the protector cap is fitted over the SF6 filler valve

•

Check the operation of the unit (including interlocks with the unit isolated)

•

Clean the unit thoroughly

•

Touch up paint-work as necessary

•

Check that the SF6 gas indicator is in the Green Zone - If the indicator is in the Red Zone, refer to Section ’9.4.2 SF6 Gas Topping Up’ on page 42.

Housing Exterior: Indoor and Outdoor Units: •

Check that all external fixings are present and tight

•

Check that all labels are present

•

Check that all earth connections are present

•

Clean the unit thoroughly

•

Touch up paint-work as necessary

If a unit has not been operated for a considerable time, and if it is practicable to do so, operate it a few times to ensure that switch is functioning correctly.

9.4

SF6 Issues

9.4.1 SF6 Gas Leakage 1.

If the unit suffers a loss of gas pressure the pointer will be in the Red Zone. In this extremely unlikely event the following procedure should be followed.

2.

If the gas pressure indicator is showing no pressure then do not operate any part of the switchgear and contact you local Lucy Switchgear office immediately.

3.

If the gas pressure indicator is in the red zone, but still registering some pressure, proceed to Section ’9.4.2 SF6 Gas Topping Up’ on page 42. It is safe to operate the switchgear in this condition. If this is not possible contact your local Lucy Switchgear office as soon as possible.

4.

If, after topping up, the gas pressure indicator continues to show a drop in pressure contact your local Lucy Switchgear office.

9.4.2 SF6 Gas Topping Up The SF6 top up valve is located under the pressure gauge on the front panel as shown:

Hansen coupling behind protective cap

The unit should be filled to the recommended pressure using either a temperature compensated gauge on the regulator head of the SF6 supply or, where such a gauge is unavailable, compensating for temperature using a graph. Before filling the switchgear, all pipes and fittings must be purged using SF6 to avoid any impurities inadvertently entering the unit or contaminating the filling valve (Hansen valve B2H16-BS) on the unit. SF6 gas to IEC 60376 must always be used. Note: Ensure all SF6 gas handling equipment is in good condition and moisture free.

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10 Ring Switch Remote Actuator Option The following installation procedures apply to both left hand and right hand remote actuator unit options.

10.1 PCB & Loom Installation 1. Using the supplied screws, fit the PCB inside the marshalling box as shown.

2. Plug the connector loom onto the pcb as shown. LH Actuator

RH Actuator

3. Attach the switch labels as shown.

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4. For connecting the Gemini umbilical cable into the marshalling box terminals, please refer to Lucy document no:DOC00041 - Gemini V1.2 To Lucy RMU Actuator Wiring Schedule.

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10.2 Remote Actuator Unit Installation 1. Slide the 'Ring Switch Selector' to the 'Main Switch' position as shown.

2. Insert the two location stud assemblies through the remote actuator mounting plate as shown.

3. Ensure the actuator unit’s location collar has the slot in the same orientation as the ring switch. The collar can be adjusted to the correct position by pulling out and rotating.

4. Locate the actuator unit into the ring switch aperture and screw in the two location studs by hand.

5. Using a suitable screwdriver, tighten the location studs as shown.

6. Secure the actuator unit with the two M12 nuts and washers, using the box spanner supplied.

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7. Plug the actuator unit lead into the Sabre units socket on the left hand side of actuator unit and screw in collar as shown.

8. The remote actuator is now ready for operation.

Note: For the actuator to operate remotely the following conditions must apply:1.The actuator unit shutter must be in the ‘ACTUATOR’ position.

2.The ring switch selector must be in the ‘MAIN SWITCH’ position.

3.The actuator unit plug must be connected.

10.3 Manual Operation With the remote actuator fitted, the ring switch can be operated manually by following this procedure.

1. Slide down the shutter to the ‘Manual’ position.

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2. Remove the ‘Disengage’ boss from the top of the remote actuator unit and insert as shown.

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3. Firmly push the boss inwards to disengage the unit from the ring switch.

4. Remove the ‘Disengage’ boss and insert the operating handle.

5. The ring switch can now be operated manually. After manual operation, the remote actuator unit will automatically re-engage when remote operation is again required.

10.4 Earth Operation A ring switch can only be switched to the earth position manually. The following procedure describes how to switch to the earth position when a remote actuator unit is fitted. 1. Firstly follow the previous procedure (Section ’10.3 Manual Operation’ on page 45) to disengage the remote actuator unit from the ring switch. 2. Once the unit has been disengaged loosen both mounting nuts and washers using the box spanner supplied.

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3. Pull the remote actuator unit away from the ring switch.

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4. Slide the ‘Ring Switch Selector’ to the ‘Earthing Switch’ position.

5. Refit the remote actuator unit and tighten the 2 M12 nuts using the box spanner.

6. Insert into the remote actuator unit the operating handle and rotate from the ‘OFF’ to ‘EARTH ON’ position.

10.5 Box Spanner Storage The supplied box spanner is to be (when not needed) stored using the clip mounted on the inside of the main door as shown.

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11 Circuit Breaker Remote Actuator Option The circuit breaker remote actuator is located (if fitted) on the right hand side of the unit as shown.

11.1 Remote Operation Conditions The operation of the circuit breaker remote actuator can only be permitted when:i) the disconnector is in the ‘SERVICE’ position (Section 8.3.6 Operate CB/T-Off from 'ISOLATE' to 'ON' on page 31). ii) the circuit breaker and disconnector operation shutters are closed (See Section 7.3.1 Padlocking to prevent operation on page 26 and Section 8.3.7 Close CB to ’SERVICE’ on page 32).

11.2 Manual Operation With the remote actuator fitted, the circuit breaker can be operated manually by opening the circuit breaker shutter and inserting the operating handle. The circuit breaker can now be operated manually. After manual operation, the remote actuator unit will automatically reset when remote operation is again required.

11.3 Remote Actuator Disengage If a power failure occurs during a circuit breaker ‘OFF & RESET’ to ‘ON’ remote operation, it can be continued manually by opening the circuit breaker shutter and inserting the operating handle. If a power failure occurs during a circuit breaker ON’ to ‘OFF & RESET’ remote operation, it can be continued manually by: 1. Open the remote actuator unit cover by undoing the captive 2. Firmly push in the actuator boss to disengage the actuator screw. gearbox.

Captive Screw

3. The circuit breaker operation can now continue manually by opening the circuit breaker shutter and inserting the operating handle. When power is re-applied the remote actuator will automatically re-engage when remote operation is again required. Remote Actuator Unit Cover Padlock Access to the circuit breaker remote actuator unit can be prevented by using a padlock on the cover as shown.

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Howland Road Thame Oxfordshire OX9 3UJ United Kingdom Tel: +44 (0)1844 267267 Fax: +44 (0)1844 267223 Email: [email protected] Internet: http://www.lucyswitchgear.com

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Lucy Manual

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