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Post on 10-Apr-2016
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Feeder Relay ID Pri. Sec. Phase in Pri. in Sec. Calculated Actual
TR-02
(HV SIDE) 7UT6121 60 1 IP 0.90 Iep 0.20 R-Phase 560 9.33 I>>> I>>>
60 1 TIP 0.60 TIep 0.30 Y-Phase 440 7.33 IE>> IE>>
5P20 I>>> 7.00 IE>> 0.70 B-Phase 350 5.83
TI>>> 0.00 TIE>> 0.00 Earth Current60.84 1.01
I>> 0.90 IE> 0.20
TI>> 0.80 TIE> 0.40
IP 0.90 Iep 0.10 R-Phase 7120 9.89 I>>> I>>>
TIP 0.10 TIep 0.10 Y-Phase 5520 7.67
(Incomer-1) - I>>> 3.00 IE>> 0.50 B-Phase 4320 6.00
TI>>> 0.00 TIE>> 0.50 Earth Current60.84 809.3
I>> 2.00 IE> -
TI>> 0.50 TIE> -
IP 0.05 Iep 0.10 R-Phase 7120 11.9 I>>> I>>>
TIP 0.06 TIep 0.06 Y-Phase 5520 9.20 Ip (Tr=0.07s)
5P10 I>>> 3.00 IE>> 0.50 B-Phase 4320 7.20
TI>>> 0.00 TIE>> 0.10 Earth Current60.84 809.3
I>> 2.00 IE> -
TI>> 0.50 TIE> -
IP - Iep - R-Phase 7120 11.9
TIP - TIep - Y-Phase 5520 9.20
5P10 I>>> - IE>> - B-Phase 4320 7.20
TI>>> - TIE>> - Earth Current60.84 809.3
I>> - IE> -
TI>> - TIE> -
IP 0.80 Iep ∞ R-Phase 7120 237.3 I>>>
TIP 0.20 TIep 0.20 Y-Phase 5520 184.0
5P10 I>>> 10.00 IE>> 2.00 B-Phase 4320 144.0
TI>>> 0.00 TIE>> 0.20 Earth Current60.84 2.028
I>> 4.00 IE> -
TI>> 0.20 TIE> -
IP - Iep - R-Phase 7120 237.3 NA
TIP - TIep - Y-Phase 5520 184.0
I>>> - IE>> - B-Phase 4320 144.0
TI>>> - TIE>> - Earth Current60.84 2.028
I>> - IE> -
TI>> - TIE> -
IP 0.80 Iep ∞ R-Phase 7120 237.3 I>>>
TIP 0.20 TIep 0.20 Y-Phase 5520 184.0
I>>> 10.00 IE>> 2.00 B-Phase 4320 144.0
TI>>> 0.00 TIE>> 0.20 Earth Current60.84 2.028
I>> 4.00 IE> -
TI>> 0.20 TIE> -
5P10
Incomer
(TR - 1A)- 150 5
5P10
TR-02
(LV SIDE) 7SJ600 720 1
Incomer
(TR - 2A)- 150 5
600 1
Outgoing2 7SJ600 600 1
Relay Trip Element
Incomer
(TR - 3A)- 150 5
Relay Details CT Ratio Existing Relay Settings Fault Current
Phase OC Earth OC
At 11kV
(Incomer1
)
-
7UT6121 CTR - 60/1A
1250A
TR-01 10/12.5 MVA 132/11KV
YNynO,7.86/8%
CTR - 720/1A
CTR - 720/1A
1250A
7UT6121
CTR - 60/1A
1250A
TR-02 10/12.5 MVA 132/11KV
YNynO,7.86/8%
CTR - 720/1A
CTR - 720/1A
1250A B/C (1250A)
7SJ600
Incomer - 2
7SJ600 CTR - 600/1A
1250A
CTR - 600-300 / 5-5 A
1250A Incomer - 2
Outgoing - 2
7SJ600 CTR - 600/1A
1250A
CTR - 600-300 / 5-5 A
1250A Incomer - 1
Outgoing - 1
Incomer - 1
7SJ600
B/C (1250A)
CTR - 150/1A
630A
TR-1A 2.5 MVA 11/0.433KV
Dyn11
4000A
CTR - 150/1A
630A
TR-2A 2.5 MVA 11/0.433KV
Dyn11
4000A
CTR - 150/1A
630A
TR-3A 2.5 MVA 11/0.433KV
Dyn11
4000A
132KV PSEB SUPPLY
132KV Bus
11KV Bus
7836946389
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