cable size calculations.xls
1
Cable Size Calculation Max. Fault Level = 200 3.4991 33 11 t (sec) = 0.5 De - Rating Factor 0.466088 Substaion 33 kV System 11 kV System 1 Sonarpur (6.3//6.3) 3 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.92 3.48 2000 105.0 225 270.27 120 2 Barrackpore (6.3//6. 2 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.92 3.48 1000 52.5 113 135.13 95 3 Anantpur (6.3//6.3) 3 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.92 3.48 200 10.5 23 27.03 95 4 Abdalpur (6.3//6.3) 3 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.92 3.48 200 10.5 23 27.03 95 5 Kalitala (6.3//3.0) 3 6.3 5.445 110.2 172.86 12.36 8.00 13.45 1.49 4.25 3.01 750 39.4 84 101.35 95 (3//3.15) 3.15 5.445 55.11 345.71 21.61 11.06 16.51 1.83 3.46 2.45 500 26.2 56 67.57 95 6 Belmuri (6.3//6.3.0) 2 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.92 3.48 1500 78.7 169 202.70 95 7 Tarui (6.3//6.3) 4 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.92 3.48 1500 78.7 169 202.70 95 (6.3//3.0) 6.3 5.445 110.2 172.86 12.36 8.00 13.45 1.49 4.25 3.01 1250 65.6 141 168.92 95 8 Chapra (6.3//3.0) 3 6.3 5.445 110.2 172.86 12.36 8.00 13.45 1.49 4.25 3.01 750 39.4 84 101.35 95 (3.0//3.0) 3 5.445 52.49 363.00 21.61 11.06 16.51 1.83 3.46 2.45 500 26.2 56 67.57 95 9 Joyshree (6.3//6.3) 2 6.3 5.445 110.2 172.86 12.36 6.18 11.62 1.29 4.917 3.48 1000 52.5 113 135.13 95 10 Raninagar (3.0//3.0) 2 3 5.445 52.49 363.00 22.69 11.06 16.51 1.83 3.463 2.45 200 10.5 23 27.03 95 11 Nakashipara (5//3) 2 5 5.445 87.48 217.80 15.57 9.24 14.69 1.63 3.892 2.75 500 26.2 56 67.57 95 (3/ 2 3.15 5.445 55.11 345.71 21.61 11.06 16.505 1.8339 3.463 2.45 500 26.2 56 67.57 95 12 University Gate (6.3 2 6.3 5.445 110.2 172.86 12.36 6.90 12.345 1.3717 4.63 3.27 1750 91.9 197 236.48 120 13 Raghunathpur 3 6.3 5.445 110.2 172.86 12.36 4.42 9.869 1.0966 5.792 4.095 250 13.12 28.15 33.78 95 ISC (kA) = VH (kV) VL (kV)= Sl .N o. No. of Power Traf Power Trafo. Capacit y (MVA) ZSYS (Ω) IF (kA) ZBASE (Ω) ZTRANS F. (Ω) ZTRANSF .(EQVT.) (Ω) ZTOTAL (Ω) ZL (Ω) ISC (kA) I (kA) Bank Size (kVAR) IFL (A) IFL (De- Rate d) (kA) IFL (IFL+20 % OF IFL) (kA) Cable Size (sq. mm.)
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cable size calculations.xls
Transcript of cable size calculations.xls
Cable Size Calculation
Max. Fault Level = 200 3.49913311
t (sec) = 0.5De - Rating Factor 0.466088
Substaion
33 kV System 11 kV System
1 Sonarpur (6.3//6.3) 3 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.92 3.48 2000 105.0 225 270.27 120
2 Barrackpore (6.3//6.3) 2 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.92 3.48 1000 52.5 113 135.13 953 Anantpur (6.3//6.3) 3 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.92 3.48 200 10.5 23 27.03 954 Abdalpur (6.3//6.3) 3 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.92 3.48 200 10.5 23 27.03 95
5Kalitala (6.3//3.0) 3 6.3 5.445 110.22 172.86 12.36 8.00 13.45 1.49 4.25 3.01 750 39.4 84 101.35 95 (3//3.15) 3.15 5.445 55.111 345.71 21.61 11.06 16.51 1.83 3.46 2.45 500 26.2 56 67.57 95
6 Belmuri (6.3//6.3.0) 2 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.92 3.48 1500 78.7 169 202.70 957 Tarui (6.3//6.3) 4 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.92 3.48 1500 78.7 169 202.70 95
(6.3//3.0) 6.3 5.445 110.22 172.86 12.36 8.00 13.45 1.49 4.25 3.01 1250 65.6 141 168.92 958 Chapra (6.3//3.0) 3 6.3 5.445 110.22 172.86 12.36 8.00 13.45 1.49 4.25 3.01 750 39.4 84 101.35 95
(3.0//3.0) 3 5.445 52.486 363.00 21.61 11.06 16.51 1.83 3.46 2.45 500 26.2 56 67.57 959 Joyshree (6.3//6.3) 2 6.3 5.445 110.22 172.86 12.36 6.18 11.62 1.29 4.917 3.48 1000 52.5 113 135.13 9510 Raninagar (3.0//3.0) 2 3 5.445 52.486 363.00 22.69 11.06 16.51 1.83 3.463 2.45 200 10.5 23 27.03 9511 Nakashipara (5//3) 2 5 5.445 87.477 217.80 15.57 9.24 14.69 1.63 3.892 2.75 500 26.2 56 67.57 95
(3//3.15) 2 3.15 5.445 55.111 345.71 21.61 11.06 16.505 1.8339 3.463 2.45 500 26.2 56 67.57 9512 University Gate (6.3//5) 2 6.3 5.445 110.22 172.86 12.36 6.90 12.345 1.3717 4.63 3.27 1750 91.9 197 236.48 12013 Raghunathpur 3 6.3 5.445 110.22 172.86 12.36 4.42 9.869 1.0966 5.792 4.095 250 13.12 28.15 33.78 95
ISC (kA) =VH (kV) =VL (kV)=
Sl.No.
No. of Power Traf
Power Trafo.
Capacity (MVA)
ZSYS
(Ω) IF
(kA)ZBASE
(Ω)
ZTRANSF.
(Ω)
ZTRANS
F.(EQVT.) (Ω)
ZTOTAL
(Ω) ZL (Ω) ISC
(kA)I
(kA)
Bank Size
(kVAR)
IFL
(A)
IFL (De-
Rated) (kA)
IFL (IFL+20
% OF IFL) (kA)
Cable Size (sq.
mm.)
A9
Administrator:
R12
This Cable Size (120 sq. mm.) Continuous Current Rating of 290 Amps and the Max. Short Circuit Current Rating of 14160 Amps
