ECP 11-0511e Lucy VRN2a and VRE2a Test...
Transcript of ECP 11-0511e Lucy VRN2a and VRE2a Test...
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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.
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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 ()
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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)
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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
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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
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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)
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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.
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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.
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Lucy VRN2a and VRE2a Test Form Document Number: ECP 11-0511e
Version: 7.0
Date: 27/02/2018
Appendix A – Schematic Drawings
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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.
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