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Document Number: ECP 11-0511e

Version: 7.0

Date: 09/09/2016

LUCY VRN2A AND VRE2A TEST FORM

Substation Name

Substation Number

Voltage

Switchgear

Installed Mode Free-standing () Transformer-mounted ()

Switchboard Number Manufacturer Lucy

Serial Number Type (VRN2a/VRE2a)

Protection CTs FPI CT Ratios in Use

Ratio in Use RSW1 RSW2

TLF

Rating Transformer Rating kVA

Shunt Trip Coil (if fitted)

24-110V DC/110-240V AC ()

Preliminary Checks ()

Disconnect the umbilical cable from the RTU (if fitted)

Visual inspection satisfactory (no visible signs of damage etc.)

Earthing satisfactory

SF6 gas pressure satisfactory

Functional/Interlock Checks ()

Open and close switches

Earth switches cannot be operated when service selected

Switch/circuit-breaker cannot be operated when earth selected

Open and close earth switches

Test access/earth star bar cannot be opened when switch/circuit-breaker in On and Off position

Test access/earth star bar can be opened when earth switch closed

Switch/circuit-breaker cannot be operated when test access open

Motorised actuator operation satisfactory using an RTU simulator (LPN Remsdaq RTU only)

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Transformer Winding Insulation Resistance using Test Voltage from ECS 11-0006(transformer-mounted units only)

HV windings to earth (LV windings connected to earth) M

LV windings to earth (HV windings connected to earth) M

Switchgear Continuity Test

Switch/Circuit- breaker Position Terminals Under Test Continuity

RSW1 RSW2 CB TM* FS*

TM* FS* RSW1 to RSW2 RSW1 to RSW2 to CB

Closed Closed Open Closed L1 - L1 L1 - L1 - L1

L2 - L2 L2 - L2 - L2

L3 - L3 L3 - L3 - L3

Open Closed L1 - L2 (RSW1)

L2 - L3 (RSW1)

RSW1 RSW2 CB Terminals Under Test Continuity

Earthed Open Open RSW1 L1 - E

L2 - E

L3 - E

Open Earthed Open RSW2 L1 - E

L2 - E

L3 - E

* TM - transformer-mounted and FS - free-standing.

HV Insulation Tests using Test Voltage from ECS 11-0006

Switch/Circuit- breaker Position Terminal Voltage (kV)

Duration (min)

IR (M)

RSW1 RSW2 CB Under Test

Earthed

TM* FS* RSW1 RSW2 CB(FS* only)

Closed Closed Open Closed L1 L2, L3

L2 L1, L3

L3 L1, L2

Open L1, L2, L3

L1, L2, L3

L1, L2, L3

Closed Open Open L1, L2, L3

L1, L2, L3

* TM - transformer-mounted and FS - free-standing.

© UK Power Networks 2018 All rights reserved 2 of 9

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

RSW1 FPI CT Tests (test from marshalling box – refer to Figure 1, Figure 2 and Figure 3)

Disconnect CT wires C410/1, C430/1 and C450/1 from the left-side of the shorting block ()

Check earth continuity C510/1 - C530/1 - C550/1 - earth ()

Disconnect wire C90 ()

Measure earth insulation resistance C510/1 - C530/1 - C550/1 - earth M

Measure L1 CT loop continuity C410/1 - C510/1

Measure L2 CT loop continuity C430/1 - C530/1

Measure L3 CT loop continuity C450/1 - C550/1

Reconnect wire C90 ()

Check earth continuity C510/1 - C530/1 - C550/1 - earth ()

Reconnect CT wires C410/1, C430/1 and C450/1to left-side of shorting block ()

RSW2 FPI CT Tests (test from marshalling box – refer to Figure 1, Figure 2 and Figure 3)

Disconnect CT wires C410/2, C430/2 and C450/2 from the left-side of the shorting block ()

Check earth continuity C510/2 - C530/2 - C550/2 - earth ()

Disconnect wire C90 ()

Measure earth insulation resistance C510/2 - C530/2 - C550/2 - earth M

Measure L1 CT loop continuity C410/2 - C510/2

Measure L2 CT loop continuity C430/2 - C530/2

Measure L3 CT loop continuity C450/2 - C550/2

Reconnect wire C90 ()

Check earth continuity C510/2 - C530/2 - C550/2 - earth ()

Reconnect CT wires C410/2, C430/2 and C450/2to left-side of shorting block ()

© UK Power Networks 2018 All rights reserved 3 of 9

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Figure 1 – FPI CT Connections in Marshalling Box (Post September 2016)

Figure 2 – FPI CT Connections in Marshalling Box (Pre September 2016)

© UK Power Networks 2018 All rights reserved 4 of 9

FPI CT connections (disconnect for FPI CT tests)

C90 (disconnect for FPI CT tests)

FPI CT shorting block (CTs shorted when output wires disconnected)

FPI Connections

FPI CT common connections

C90 (disconnect for FPI CT tests)

FPI CT common connections

FPI Connections

FPI CT shorting block (CTs shorted when output wires

FPI CT connections (disconnect for FPI CT tests)

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Figure 3 – FPI CT Overview Schematic Drawing

Figure 4 – Protection CT Overview Schematic Drawing

© UK Power Networks 2018 All rights reserved 5 of 9

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Protection CTs Insulation Resistance using 1kV Test Voltage(test from marshalling box – refer to Figure 4 and Figure 5)

Check circuit-breaker selector switch is in the service position ()

Remove CT wiring earth link C70 - C90 ()

CTs, trip coils and TLFs C70 - C90 M

Replace CT wiring earth link C70 - C90 ()

Protection CTs Loop Continuity(test CT and trip coil from TLF ratio terminal block with test link removed)

Remove CT ratio shorting link ()

100/5 Ratio 50/5 Ratio

L1 C110 - C70 C210 - C70

L2 C130 - C70 C230 - C70

L3 C150 - C70 C250 - C70

Replace CT ratio shorting link ()

Figure 5 – Protection and FPI CT Connections in Marshalling Box

© UK Power Networks 2018 All rights reserved 6 of 9

C110-C130-C150-C70-C210-C230-C250100/5 50/5

Protection CT Test Connections

Earth link C70-C90

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Figure 6 – Customer Inter-trip Connections (41 & 42)

© UK Power Networks 2018 All rights reserved 7 of 9

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Primary Injection Test (free-standing units only)

Earth Fault Release Test

Remove TLFs and replace with shorting links ()

RSW1 RSW2 CB Conductors Under Test CT Ratios

Trip Range Trip Current

RSW1 CB

Closed Open Closed L1 L1 50/5 <35A A

100/5 <35A A

L2 L2 50/5 <35A A

100/5 <35A A

L3 L3 50/5 <35A A

100/5 <35A A

Overcurrent Release Test

Remove TLF shorting-links, connect shorting-link between L1, L2, L3 on CB ()

RSW1 RSW2 CB Conductors Under Test

Short Conductors

CT Ratios

Trip Range Trip Current

RSW1 CB

Closed Open Closed L1 - L2 L1, L2, L3 50/5 <35A A

100/5 <35A A

L2 - L3 L1, L2, L3 50/5 <35A A

100/5 <35A A

Secondary Injection Test (transformer-mounted units only)

Earth Fault Release Test

Remove TLFs and replace with shorting links ()

RSW1 RSW2 CB Test Connections CT Ratios

Trip Range Trip Current

Open Open Closed C31 - C70 50/5 <3.5A A

100/5 <7.0A A

Overcurrent Release Test

Remove shorting links ()

RSW1 RSW2 CB Test Connections CT Ratios

Trip Range Trip Current

Open Open Closed C11 - C31 50/5 <3.5A A

100/5 <7.0A A

C31 - C51 50/5 <3.5A A

100/5 <7.0A ANote: If the circuit-breaker does not operate when the injected current is gradually applied then the maximum value of current should be applied instantaneously.

© UK Power Networks 2018 All rights reserved 8 of 9

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Shunt Trip and Emergency Trip (if fitted)

Check correct shunt trip coil voltage is selected ()

Test Coil Marshalling Box Terminals

Test Voltage CB Trips

Apply 70% (dc) or 85% (ac) of coil rated voltage

24-110V DC/110-240V AC 41 - 42 V ()

Apply 110% of coil rated voltage 24-110V DC/110-240V AC 41 - 42 V ()

Check emergency trip button operates circuit-breaker ()

Final Checks ()

Check correct CT ratio selected

Check correct TLF rating selected and fitted

Check all links are replaced and secure

Reconnect umbilical cable to RTU (if fitted)

Asset data form completed and submitted

Test Equipment

Make/Type Serial Number Calibration Date

Certification ()

All tests have been completed satisfactorily

Comments

Commissioning Engineer Signature Date

The completed test form shall be left on-site in a plastic wallet and in secure location. A copy of the completed test shall be sent to the relevant ART mailbox.

© UK Power Networks 2018 All rights reserved 9 of 9

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Appendix A – Schematic Drawings

© UK Power Networks 2018 All rights reserved 1

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

© UK Power Networks 2018 All rights reserved 2

Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e

Version: 7.0

Date: 27/02/2018

Note: For a complete list of Lucy SABRE A drawings refer to ECP 11 0511 Lucy SABRE A Schematic Drawings.pdf.

© UK Power Networks 2018 All rights reserved 3