ECP 11-0511G Lucy Vcn2a and Vce2a Test Form

Lucy VCN2a and VCE2a Test Form / Document Number: ECP 11-0511g
Version: 6.0
Date: 24/05/2017

Lucy VCN2a and VCE2a Test Form

Substation Name
Substation Number
Voltage
Switchgear
Installed Mode / Free-standing / () / Transformer-mounted / ()
Switchboard Number / Manufacturer / Lucy
Serial Number / Type
Protection CTs
Ratio in Use
TLF
Rating / Transformer Rating / kVA
Preliminary Checks / ()
Visual inspection satisfactory (no visible signs of damage etc)
Earthing satisfactory
SF6 gas pressure satisfactory
Functional/Interlock Checks / ()
Open and close circuit-breaker
Earth switch cannot be operated when service selected
Circuit-breaker cannot be operated when earth selected
Open and close earth switch
Test access/earth star bar cannot be opened when circuit-breaker in On and Off position
Test access/earth star bar can be opened when earth switch closed
Transformer Winding Insulation Resistance using Test Voltage from ECS 11-0006(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
Circuit-breaker / Terminals Under Test / Continuity / Circuit-breaker / Terminals Under Test / Continuity
Closed / L1 - L1 /  / Earthed / L1 -E / 
L2 - L2 /  / L2 - E / 
L3 - L3 /  / L3 - E / 
HV Insulation Tests using Test Voltage from ECS 11-0006
Circuit-breaker / Terminals / Voltage (kV) / Duration (min) / IR (M)
Under Test / Earthed
Closed / L1 / L2, L3
Closed / L2 / L1, L3
Closed / L3 / L1, L2
Open / L1, L2, L3 / L1, L2, L3
Protection CTs Insulation Resistance using 1kV Test Voltage
(test from marshalling box –refer to Figure 1andFigure 2)
Check selector switch is in the service position / ()
Remove CT wiring earth link / C70 - C90 / ()
CTs, AC trip coils and TLFs / C70 - Earth / M
Replace CT wiring earth link / C70 - C90 / ()
Figure 1 – Marshalling Box / Figure 2 – Protection CT connections in Marshalling Box
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 - C72 /  / C210 - C72 / 
L2 / C130 - C72 /  / C230 - C72 / 
L3 / C150 - C72 /  / C250 - C72 / 
Replace CT ratio shorting link / ()

Note: For a complete list of Lucy SABRE A drawings refer to ECP110511 Lucy SABRE A Schematic Drawings.pdf.

Primary Injection Test (free-standing units only)
Earth Fault Release Test
Remove TLFs and replace with shorting links / ()
CB / Conductors Under Test / CT Ratios / TripRange / Trip Current
Closed / L1 - L1 / 50/5 / 35A / A
100/5 / 35A / A
Closed / L2 - L2 / 50/5 / 35A / A
100/5 / 35A / A
Closed / L3 - L3 / 50/5 / 35A / A
100/5 / 35A / A
Overcurrent Release Test
Remove TLF shorting-links, connect shorting-link to L1, L2, L3 on one side / ()
CB / Conductors Under Test / Short Conductors / CT Ratios / Trip Range / Trip Current
Closed / L1 - L2 / 50/5 / <35A / A
100/5 / 35A / A
Closed / L2 - L3 / 50/5 / 5A / A
100/5 / 35A / A
Secondary Injection Test (transformer-mounted units only)
Earth Fault Release Test
(remove TLFs and replace with shorting links)
CB / Test Connections / CT Ratios / TripRange / Trip Current
Open / C31 - C70 / 50/5 / <3.5A / A
100/5 / <7.0A / A
Overcurrent Release Test
(remove shorting links)
CB / Test Connections / CT Ratios / TripRange / Trip Current
Open / C11 - C31 / 50/5 / <3.5A / A
100/5 / <7.0A / A
Open / C31 - C51 / 50/5 / <3.5A / A
100/5 / <7.0A / 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.

Final Checks / ()
Check correct CT ratio selected
Check correct TLF rating selected and fitted
Check all links are replaced and secure
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

Thecompleted 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.