Version: 1.0
Date: 09/07/2013
Efacec Fluofix GCT Test Form
Substation NameSubstation Number
Voltage
Switchgear
Installed Mode / Free-standing / () / Transformer-mounted / ()
Switchboard Number / Manufacturer / Efacec
Serial Number / Type / Fluofix GCT
Protection CTs / FPI CT Ratios in Use
Ratio in Use / RSW1 / RSW2
TLF
Rating / Transformer Rating / kVA
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 cannot be opened when switch/circuit-breaker in On and Off position
Test access 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 only)
Transformer Winding Insulation Resistance using Test Voltage from EOS 09-0001
(transformer-mounted units only)
HV windings to earth (LV windings connected together and to earth) / M
LV windings to earth (HV windings connected together and to earth) / M
Switchgear Continuity Test
RSW1 / RSW2 / CB / Terminals Under Test / Continuity
TM* / FS* / TM* / FS*
RSW1 to RSW2 / RSW1 to RSW2 to CB
Closed / Closed / Open / Closed / L1 - L1 / L1 - L1 - L1 /
Closed / Closed / Open / Closed / L2 - L2 / L2 - L2 - L2 /
Closed / Closed / Open / Closed / L3 - L3 / L3 - L3 - L3 /
Closed / Open / Closed / L1 - L2 (RSW1) /
Closed / Open / Closed / L2 - L3 (RSW1) /
* TM - transformer-mounted and FS - free-standing.
HV Insulation Tests using Test Voltage from EOS 09-0001
RSW1 / RSW2 / CB / Terminal / Voltage (kV) / Duration (min) / IR (M)
Under Test / Earthed
TM* / FS* / RSW1 / RSW2 / CB
(FS* only)
Closed / Closed / Open / Closed / L1 / L2, L3
Closed / Closed / Open / Closed / L2 / L1, L3
Closed / Closed / Open / Closed / L3 / L1, L2
Open / Closed / Open / Closed / L1, L2, L3 / L1, L2, L3 / L1, L2, L3
Closed / Open / Open / Open / L1, L2, L3 / L1, L2, L3
* TM - transformer-mounted and FS - free-standing.
FPI CTs Insulation Resistance using 1kV Test Voltage
(test from terminal blockRSW1 X3.1 in LV compartment at back)
Disconnect FPI/RTU umbilical cable(if fitted) / ()
RSW1 / RSW2 (if fitted)
Remove earth link / C90 from X3.1/110 / () / C90 from X3.1/110 / ()
L1, L2, L3 / X3.1/111, X3.1/112, X3.1/113 - Earth / M / X3.1/111, X3.1/112, X3.1/113 - Earth / M
Reconnect earth link / C90 to X3.1/110 / () / C90 to X3.1/110 / ()
FPI CTs Loop Continuity
(test from terminal blockRSW2 X3.1 in LV compartment at back)
RSW1 / RSW2 (if fitted)
L1 / X3.1/111 - X3.1/110 / / X3.1/111 - X3.1/110 /
L2 / X3.1/112 - X3.1/110 / / X3.1/112 - X3.1/110 /
L3 / X3.1/113 - X3.1/110 / / X3.1/113 - X3.1/110 /
Reconnect FPI/RTU (if fitted) / ()
Protection CTs Insulation Resistance using 1kV Test Voltage
(test from terminal block X3 in LV compartment)
Disconnect earth link / X3/13 (unscrew the yellow point) / ()
CTs, AC trip coils and TLFs / C90 to C70 (across X3/13) / M
Reconnect earth link / X3/13 (tighten yellow point) / ()
Protection CTs Loop Continuity
(test CT and trip coil from terminal block X9 in LV compartment)
Remove CT ratio shorting link and test link / ()
100/5 Ratio / 50/5 Ratio
L1 / 10 -C71 / / 14 - C71 /
L2 / 11 - C71 / / 15 - C71 /
L3 / 12 - C71 / / 16 - C71 /
Replace CT ratio shorting link and test link / ()
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 / 25 - 30A / A
100/5 / 35 - 40A / A
Closed / Open / Closed / L2 / L2 / 50/5 / 25 - 30A / A
100/5 / 35 - 40A / A
Closed / Open / Closed / L3 / L3 / 50/5 / 25 - 30A / A
100/5 / 35 - 40A / 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 / TripRange / Trip Current
RSW1 / CB
Closed / Open / Closed / L1 – L2 / L1, L2, L3 / 50/5 / 50A / A
100/5 / 100A / A
Closed / Open / Closed / L2 - L3 / L1, L2, L3 / 50/5 / 50A / A
100/5 / 100A / 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 / 5A / A
100/5 / 5A / A
Overcurrent Release Test
Remove shorting links / ()
RSW1 / RSW2 / CB / Test Connections / CT Ratios / TripRange / Trip Current
Open / Open / Closed / C11 - C31 / 50/5 / 2.5 - 3.0A / A
100/5 / 1.5 - 2.0A / A
Open / Open / Closed / C31 - C51 / 50/5 / 2.5 - 3.0A / A
100/5 / 1.5 - 2.0A / A
Note: If the circuit-breaker does not operate when the injected current is gradually applied then the maximum value of current should be applied instantaneously.
Emergency Trip (if fitted) / ()Check correct shunt trip coil voltage is correct
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
Ensure FPI CT shorting-link(s) are replaced if CTs are not used or not connected to FPI or RTU
Reconnect umbilical cable to RTU (if fitted)
Asset data form completed and submitted
Test Equipment
Purpose / Make/Type / Serial Number
Certification / ()
All tests have been completed satisfactorily
Comments
Commissioning Engineer / Signature / Date
This test form should be left on-site in a plastic wallet and in a secure location.
© UK Power Networks 2013 All rights reserved1 of 6
EfacecFluofix GCT Test Form / Document Number: ECP 11-0511hVersion: 1.0
Date: 09/07/2013
Appendix A– Schematic Diagrams
© UK Power Networks 2013 All rights reserved1