-
132KV CT Parameters 1. The Excitation Current for Maximum CT
Ratio at rated Knee Point Voltage is as minimum as
possible and limited to 30mA.
132KV FEEDER CTs : 600-300/1-1-1-1-1 : 5 CORES
S.No CORE
CURRENT
RATIO
OUTPUTBURDE
NACCCLS Vknee RCT IMAG
For Line
ForTRF HV
ForBS/BC
1
1300/1 - PS 60I(RCT+10)
1.5 60mA
21L 87TB/B
Developer600/1 - PS 60I(RCT+10) 3 30mA
2300/1 - PS 60I(RCT+10)
1.5 60mA
BCPU/67BCPU/
50+51+67
BCPU/50+51+6
7600/1 - PS 60I(RCT+10) 3 30mA
3300/1 5 VA 0.2S (ISF5) - -
MFM +EM MFM +EM Standby Meter600/1 5 VA 0.2S (ISF5) - -
4300/1 - PS 60I(RCT+10)
1.5 60mA
LBB LBB LBB600/1 - PS 60I(RCT+10) 3 30mA
5 300/1 - PS 60I(RCT+10)
1.5
60mA B/B B/B B/B
-
STU Developer STU600/1 - PS 60I(RCT+10) 3 30mA
2 1300/1 5 VA 0.2S (ISF5) - -
- - Main &Check600/1 5 VA 0.2S (ISF5) - -
-
33KV CT Parameters 2. The Excitation Current for Maximum CT
Ratio at rated Knee Point Voltage is as minimum as
possible and limited to 30mA.
132KV FEEDER CTs : 600-300/1-1-1-1-1 : 5 CORES
S.No CORE
CURRENT
RATIO
OUTPUTBURDE
NACCCLS Vknee RCT IMAG
For TRF LV
ForBS/BC
ForFeeder
1
11600/1 - PS 40I(RCT+10) 8 40mA
87T PBB -1200/1 - PS 40I(RCT+10) 6 30mA
21600/1 - PS 40I(RCT+10) 8 40mA BCPU/
50+51+67
BCPU/50+51+6
7-
1200/1 - PS 40I(RCT+10) 6 30mA
31600/1 10 VA 0.2S (ISF5) - -
MFM+EM MFM+EM -1200/1 10 VA 0.2S (ISF5) - -
4300/1 - PS 40I(RCT+10)
1.5 40mA
PBB PBB -600/1 - PS 40I(RCT+10) 3 30mA
2 1 400/1 - 5P20
40I(RCT+10)
1.5
60mA - - BCPU/50+51+6
-
7200/1 - 5P2040I(RCT+10
) 3 30mA
2400/1 10 VA 0.2S (ISF5) - -
- - MFM+EM200/1 10 VA 0.2S (ISF5) - -
-
Protection Systems S.No Voltage Level Type of Protection Relay
Model Other Information
1 132KV
Line Distance Protection (21)
PSB, SOFT, Fault Locator, Open
Conductor
7SA61
MFLB No: 7SA6101-5AB92-7PR5-LOSAUX SUPPLY:220V DCCT Sec-1A, VT
Sec-110V, SIZE:1/3 x19 Bin I/P:33. Bin O/P:19, 1LiveIEC 61850 With
FO PortTrip Mode: 3 PoleDistance: Quadrilateral
2 132KV Line B/U Protection (67) 7SJ645
MFLB No: 7SJ6451-5EB92-1FC4-LOSAUX SUPPLY:220V DCCT Sec-1A, VT
Sec-110V, SIZE:1/1x19 Bin I/P:33. Bin O/P:19, 1LiveIEC 61850 WITH
FO PORT
3 132 KV MFMALSTOM
SCHNEIDERACCORDRISHAB
One Inch LED DisplayThree Parameters at a TimeAUX SUPPLY:220V
DCCT Sec-1A, VT Sec-110V, MOD BUS
4 132 KV LBB 7VK617SJ80/1AUX SUPPLY:220V DCCT Sec-1A,
5 132 KV BUSBAR7SS60
7UT635DAD
AUX SUPPLY:220V DCCT Sec-1A,IEC 61850 WITH FO PORT
6 132 KV BUS VOLTAGEMFMEACHBUS
One Inch LED DisplayThree Parameters at a TimeAUX SUPPLY:220V
DCVT Sec-110V, Frequency, MOD BUS
7 132 KVTransformer Differential
(87 T)IN Built HV REF, LV REF, O/F
7UT612/613 AUX SUPPLY:220V DCCT Sec-1A, VT Sec-110V, SIZE:1/2
x19 8 132 KV TRF B/U Protection 7SJ645 MFLB No:
7SJ6451-5EB92-1FC4-LOS
-
(67/50/51)BCPU
AUX SUPPLY:220V DCCT Sec-1A, VT Sec-110V, SIZE:1/1x19 Bin
I/P:33. Bin O/P:19, 1LiveIEC 61850 WITH FO PORT
9 33 KVTransformer Differential
(87 T)IN BUILT HV REF, LV REF, O/F
7UT612/613 AUX SUPPLY:220V DCCT Sec-1A, VT Sec-110V, SIZE:1/3
x19
10 33 KVTRF B/U Protection
(67/50/51)BCPU
7SJ645
MFLB No: 7SJ6451-5EB92-1FC4-LOSAUX SUPPLY:220V DCCT Sec-1A, VT
Sec-110V, SIZE:1/1x19 Bin I/P:33. Bin O/P:19, 1LiveIEC 61850 WITH
FO PORT
10 33 KV Partial BUSBAR Protection7SJ645
7SJ80/81AUX SUPPLY:220V DCCT Sec-1A, VT Sec-110V
11 33 KV MFMALSTOM
SCHNEIDERACCORDRISHAB
One Inch LED DisplayThree Parameters at a TimeAUX SUPPLY:220V
DCCT Sec-1A, VT Sec-110V, MOD BUS
12 33 KV Feeder B/U Protection (50/51/67) 7SJ645
MFLB No: 7SJ6451-5EB92-1FC4-LOSAUX SUPPLY:220V DCCT Sec-1A, VT
Sec-110V, SIZE:1/1x19 Bin I/P:33. Bin O/P:19, 1LiveIEC 61850 WITH
FO PORT
11 33 KV BUS VOLTAGEMFMEACHBUS
One Inch LED DisplayThree Parameters at a TimeAUX SUPPLY:220V
DCVT Sec-110V, Frequency, MOD BUS
12 132 KVMAIN, CHECK &
STANDBY TARIFF METERS
SECURE APEX
ELSTERCT Sec-1A, VT Sec-110VPARAMETERS AS PER EBC
