Xlpe ialuminumtem factor ground tempinsulationvarious cable derating factors pvc insulatedaluminumshort circuit current rating for sec circuit current rating for sec circuit current rating for sec for sec circuit current rating for sec derating factorssoil thermal resistivity circuitperno cable depth circuit currentrating for sec
Demand Factor | 1 | Volt | |
---|---|---|---|
System Voltage V(L-L) | 440 | ||
System Voltage V(L-N) | 254 | Volt | |
P.F | 0.80 | K.Amp |
|
Enter Short circuit Current If You Know | |||
Ground | |||
Cable Installation Media | 2 | ||
Ground Temperature (K2) | 45 | °C |
|
No of Trench | 1 | ||
No of Cable/Trench | 1 | ||
Distance Between Cable | Nill | Meter | |
No. of Runs of selected cable | 1 | ||
Cable Laying on The Depth of | 1 | ||
Soil Thermal Resistiivty | Not Known | Km/Watt | |
Nature of Soil (k3) | Very Wet Soil | ||
Meter | |||
Distance | 200 | ||
Type of Cable | 3cX 35 | ||
Allowable voltage drop | 5 | % |
(1.732 X (Full Load Current)X(RCosØ+j SinØ)XLengthX100) / Line VoltageXNo of RunX1000
###
|
|
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
|
|
1cX120 | ||||||||
|
|
1cX150 | ||||||||
1cX185 |
|
|||||||||
|
1cX240 | |||||||||
|
|
1cX300 | ||||||||
|
1cX400 |
|
||||||||
1cX 500 | ||||||||||
|
|
1cX 630 |
|
|||||||
|
1cX800 | |||||||||
|
1cX150 | 1cX1000 | ||||||||
1cX185 | 1cX 500 | |||||||||
|
|
1cX240 | 1cX 630 | |||||||
1cX300 | ||||||||||
|
1cX400 | 1cX1000 | ||||||||
|
1cX 500 | |||||||||
1cX 630 |
|
|||||||||
|
1cX800 | |||||||||
|
1cX1000 | |||||||||
|
|
|||||||||
3cX 120 | ||||||||||
3cX 150 | ||||||||||
|
|
3cX 185 | ||||||||
3cX 240 | ||||||||||
3cX 300 | ||||||||||
|
|
3cX 400 | ||||||||
2cX95
|
---|
1cX240 | 0.15 | 0.09 | 0.091 | 0.09 | 270 |
---|---|---|---|---|---|
1cX300 | 0.12 | 0.088 | 0.074 | 0.088 | 295 |
1cX400 | 0.094 | 0.088 | 0.059 | 0.088 | 325 |
1cX 500 | 0.0726 | 0.087 | 0.046 | 0.087 | 345 |
1cX 630 | 0.0563 | 0.086 | 0.037 | 0.086 | 390 |
1cX800 | 0.044 | 0.083 | 0.031 | 0.083 | 450 |
1cX1000 | 0.0349 | 0.082 | 0.027 | 0.082 | 500 |
2cX1.5 | 21.72 | 0.126 | 14.5 | 0.126 | 18 |
2cX2.5 | 14.52 | 0.119 | 8.87 | 0.119 | 16 |
2cX4 | 8.89 | 0.116 | 5.52 | 0.116 | 32 |
2cX 6 | 5.53 | 0.11 | 3.69 | 0.11 | 40 |
2cX10 | 3.7 | 0.1 | 2.19 | 0.1 | 55 |
2cX16 | 2.29 | 0.097 | 1.38 | 0.097 | 70 |
2cX25 | 1.44 | 0.097 | 0.87 | 0.097 | 90 |
2cX35 | 1.04 | 0.097 | 0.627 | 0.097 | 110 |
2cX50 | 0.77 | 0.094 | 0.463 | 0.094 | 135 |
2cX70 | 0.53 | 0.09 | 0.321 | 0.09 | 160 |
2cX95 | 0.38 | 0.09 | 0.231 | 0.9 | 190 |
2cX120 | 0.3 | 0.087 | 0.184 | 0.087 | 210 |
2cX150 | 0.25 | 0.087 | 0.149 | 0.087 | 240 |
2cX185 | 0.2 | 0.087 | 0.12 | 0.087 | 275 |
2cX240 | 0.15 | 0.087 | 0.091 | 0.087 | 320 |
2cX300 | 0.12 | 0.086 | 0.073 | 0.086 | 355 |
2cX400 | 0.09 | 0.086 | 0.059 | 0.086 | 385 |
2cX500 | 0.09 | 0.086 | 0.059 | 0.086 | 425 |
2cX630 | 0.09 | 0.086 | 0.059 | 0.086 | 465 |
3cX1.5 | 21.72 | 0.126 | 14.5 | 0.126 | 16 |
3cX2.5 | 14.52 | 0.119 | 8.87 | 0.119 | 21 |
3cX4 | 8.89 | 0.116 | 5.52 | 0.116 | 28 |
3cX 6 | 5.53 | 0.11 | 3.69 | 0.11 | 35 |
3cX 10 | 3.7 | 0.1 | 2.19 | 0.1 | 46 |
3cX 16 | 2.29 | 0.097 | 1.38 | 0.097 | 60 |
3cX 25 | 1.44 | 0.097 | 0.87 | 0.097 | 76 |
3cX 35 | 1.04 | 0.097 | 0.627 | 0.097 | 92 |
3cX 50 | 0.77 | 0.094 | 0.463 | 0.094 | 110 |
3cX 70 | 0.53 | 0.09 | 0.321 | 0.09 | 135 |
3cX 95 | 0.38 | 0.9 | 0.231 | 0.09 | 165 |
3cX 120 | 0.3 | 0.087 | 0.184 | 0.087 | 185 |
3cX 150 | 0.25 | 0.087 | 0.149 | 0.087 | 210 |
3cX 185 | 0.2 | 0.087 | 0.12 | 0.087 | 235 |
3cX 240 | 0.15 | 0.087 | 0.0912 | 0.087 | 275 |
3cX 300 | 0.12 | 0.086 | 0.0739 | 0.086 | 305 |
3cX 400 | 0.09 | 0.086 | 0.0592 | 0.086 | 335 |
3cX 500 | 0.09 | 0.086 | 0.0592 | 0.086 | 370 |
3cX 630 | 0.09 | 0.086 | 0.0592 | 0.086 | 405 |
3.5X16 | 1.44 | 0.097 | 0.73 | 0.097 | 70 |
3.5X25 | 0.77 | 0.094 | 0.387 | .0.094 | 76 |
3.5X35 | 0.53 | 0.09 | 0.268 | 0.09 | 92 |
3.5X50 | 0.38 | 0.09 | 0.193 | 0.09 | 110 |
3.5X70 | 0.3 | 0.087 | 0.153 | 0.087 | 135 |
3.5X95 | 0.2 | 0.087 | 0.099 | 0.087 | 165 |
3.5X120 | 0.15 | 0.087 | 0.075 | 0.087 | 185 |
3.5X150 | 0.12 | 0.086 | 0.06 | 0.086 | 210 |
3.5X185 | 0.09 | 0.086 | 0.047 | 0.086 | 235 |
3.5X240 | 0.08 | 0.085 | 0.046 | 0.085 | 275 |
3.8 / 6.6 KV(6.6 KV Earthed) AL/COPPER COND, XLPE |
---|
Aluminum |
|
---|
Nominal | Alum | Copp | er | ||
Conductor Area (Sq.mm) |
Resi | React | Resi | React | Ground |
ohm/km | ohm/km | ohm/km | ohm/km | Amp | |
1cX25 | 1.1 | 0.134 | 1.1 | 0.134 | 100 |
1cX35 | 1.1 | 0.134 | 1.1 | 0.134 | 120 |
1cX50 | 0.822 | 0.1358 | 0.822 | 0.1358 | 140 |
1cX70 | 0.568 | 0.1237 | 0.568 | 0.1237 | 175 |
1cX95 | 0.411 | 0.1168 | 0.411 | 0.1168 | 205 |
1cX120 | 0.325 | 0.1128 | 0.325 | 0.1128 | 235 |
1cX150 | 0.265 | 0.1096 | 0.265 | 0.1096 | 260 |
1cX185 | 0.211 | 0.1073 | 0.211 | 0.1073 | 295 |
1cX240 | 0.161 | 0.1041 | 0.161 | 0.1041 | 340 |
1cX300 | 0.13 | 0.1002 | 0.13 | 0.1002 | 385 |
1cX400 | 0.102 | 0.0968 | 0.102 | 0.0968 | 440 |
1cX 500 | 0.08 | 0.0939 | 0.08 | 0.0939 | 495 |
1cX 630 | 0.063 | 0.0921 | 0.063 | 0.0921 | 560 |
1cX800 | 0.0513 | 0.097 | 0.0513 | 0.097 | 620 |
1cX1000 | 0.0426 | 0.0875 | 0.0426 | 0.0875 | 680 |
66 KV(66 KV Un Earthed) AL/COPPER COND, XLPE I Aluminum |
---|
1 KV PVC Insulated
Copper | ||||||
Duct | Air | Ground | Duct | Air | Aluminium | Copper |
Amp | Amp | Amp | Amp | Amp | ||
— | — | 39 | 38 | 35 | 0.304 | 0.460 |
37 | 35 | 49 | 48 | 44 | 0.456 | 0.690 |
51 | 47 | 65 | 64 | 60 | 0.760 | 1.150 |
65 | 64 | 85 | 83 | 82 | 1.220 | 1.84 |
84 | 84 | 110 | 110 | 110 | 1.900 | 2.88 |
100 | 105 | 130 | 125 | 130 | 2.660 | 4.03 |
115 | 130 | 155 | 150 | 165 | 3.800 | 5.75 |
135 | 155 | 190 | 175 | 205 | 5.320 | 8.05 |
155 | 190 | 220 | 200 | 245 | 7.220 | 10.90 |
170 | 220 | 250 | 220 | 280 | 9.120 | 13.80 |
190 | 250 | 280 | 245 | 320 | 11.40 | 17.30 |
210 | 290 | 305 | 260 | 370 | 14.10 | 21.30 |
260 | 315 | 385 | 335 | 400 | 22.80 | 34.50 |
---|---|---|---|---|---|---|
290 | 375 | 425 | 360 | 435 | 30.40 | 46.00 |
320 | 425 | 470 | 390 | 520 | 38.00 | 57.50 |
350 | 480 | 555 | 470 | 675 | 47.90 | 72.50 |
14 | 13 | 21 | 17 | 17 | 0.3 | 0.4 |
18 | 18 | 27 | 24 | 24 | 0.3 | 0.4 |
23 | 23 | 36 | 30 | 30 | 0.304 | 0.460 |
30 | 30 | 45 | 38 | 39 | 0.456 | 0.690 |
39 | 40 | 60 | 50 | 52 | 0.760 | 1.150 |
50 | 51 | 77 | 64 | 66 | 1.220 | 1.840 |
63 | 70 | 99 | 81 | 90 | 1.900 | 2.880 |
77 | 86 | 120 | 99 | 110 | 2.660 | 4.030 |
95 | 105 | 145 | 125 | 135 | 3.800 | 5.750 |
115 | 130 | 175 | 150 | 165 | 5.320 | 8.050 |
140 | 155 | 210 | 175 | 200 | 7.220 | 10.900 |
155 | 180 | 240 | 195 | 230 | 9.120 | 13.800 |
175 | 205 | 270 | 225 | 265 | 11.400 | 17.300 |
200 | 240 | 300 | 255 | 305 | 14.100 | 21.300 |
235 | 280 | 345 | 295 | 355 | 18.200 | 27.600 |
260 | 315 | 385 | 335 | 400 | 22.800 | 34.500 |
290 | 375 | 425 | 360 | 435 | 30.400 | 46.000 |
320 | 425 | 470 | 390 | 520 | 38.000 | 57.500 |
350 | 480 | 555 | 470 | 675 | 47.900 | 72.500 |
350 | 520 | 500 | 440 | 650 | 37.60 | 57.20 |
---|
/COPPER COND, XLPE INSULATED CABLES | ||||||
---|---|---|---|---|---|---|
Copper |
|
|||||
Duct | Air | Ground | Duct | Air | Aluminium | Copper |
Amp | Amp | Amp | Amp | Amp | ||
90 | 120 | 130 | 115 | 155 | 2.35 | 3.58 |
105 | 145 | 155 | 140 | 185 | 3.29 | 5.00 |
125 | 170 | 185 | 160 | 220 | 4.70 | 7.15 |
155 | 215 | 225 | 195 | 275 | 6.58 | 10.01 |
180 | 260 | 265 | 235 | 340 | 8.93 | 13.59 |
205 | 305 | 300 | 265 | 390 | 11.28 | 17.16 |
230 | 345 | 335 | 295 | 440 | 14.10 | 21.45 |
260 | 395 | 380 | 330 | 510 | 17.39 | 26.46 |
300 | 470 | 435 | 380 | 600 | 22.56 | 34.32 |
335 | 540 | 490 | 425 | 680 | 28.20 | 42.90 |
380 | 630 | 550 | 480 | 790 | 37.60 | 57.20 |
430 | 730 | 610 | 530 | 910 | 47.00 | 71.50 |
480 | 840 | 680 | 580 | 1030 | 59.22 | 90.10 |
530 | 960 | 740 | 630 | 1140 | 75.20 | 114.40 |
580 | 1070 | 790 | 670 | 1250 | 94.00 | 143.00 |
/COPPER COND, XLPE INSULATED CABLES | ||||||
---|---|---|---|---|---|---|
|
Copper | |||||
Duct | Air | Ground | Duct | Air | Aluminium | Copper |
Amp | Amp | Amp | Amp | Amp | ||
240 | 240 | 9.8 | ||||
280 | 280 | 12.4 | ||||
335 | 335 | 15.5 | ||||
380 | 380 | 19.2 | ||||
450 | 450 | 24.8 | ||||
510 | 510 | 31.1 | ||||
595 | 595 | 41.4 | ||||
690 | 690 | 51.8 | ||||
800 | 800 | 65.2 | ||||
910 | 910 | 82.8 | ||||
1010 | 1010 | 104 |
Corrrection Factor:K3 | (Temp. Derating factor) | |||||
---|---|---|---|---|---|---|
Nature of Soil | K3 | Tem | PVC Flexible (Up to 1.1 KV) | LT PVC | LT XLPE | |
Very Wet Soil | 1.21 | 25 | 1.25 | 1.16 | 1.28 | 1.14 |
Wet Soil | 1.13 | 30 | 1.16 | 1.1 | 1.22 | 1.1 |
Damp Soil | 1.05 | 35 | 1.09 | 1.05 | 1.134 | 1.04 |
Dry Soil | 1 | 40 | 1 | 1 | 1 | 1 |
Very Dry Soil | 0.86 | 45 | 0.9 | 0.94 | 0.975 | 0.95 |
50 | 0.8 | 0.88 | 0.878 | 0.9 | ||
55 | 0.69 | 0.82 | 0.768 | 0.85 |
1cX240 | 0.162 | 0.079 | 0.0965 | 0.079 | 340 | 300 | 450 | 435 |
---|---|---|---|---|---|---|---|---|
1cX300 | 0.13 | 0.078 | 0.0769 | 0.078 | 390 | 335 | 519 | 490 |
1cX400 | 0.1023 | 0.077 | 0.0608 | 0.077 | 450 | 380 | 605 | 550 |
1cX 500 | 0.0808 | 0.076 | 0.0468 | 0.076 | 500 | 430 | 700 | 610 |
1cX 630 | 0.0648 | 0.075 | 0.0362 | 0.075 | 555 | 485 | 809 | 680 |
1cX800 | 0.053 | 0.075 | 0.0283 | 0.075 | 625 | 530 | 935 | 740 |
1cX1000 | 0.0444 | 0.068 | 0.0225 | 0.068 | 690 | 570 | 1065 | 780 |
2cX1.5 | — | — | — | — | — | — | — | — |
2cX2.5 | — | — | — | — | — | — | — | — |
2cX4 | 1.555 | 0.097 | 1.555 | 0.097 | 34 | 28 | 30 | 44 |
2cX 6 | 1.553 | 0.097 | 1.553 | 0.097 | 43 | 37 | 40 | 55 |
2cX10 | 1.553 | 0.085 | 1.553 | 0.085 | 57 | 48 | 53 | 74 |
2cX16 | 1.54 | 0.08 | 1.54 | 0.08 | 78 | 61 | 70 | 94 |
2cX25 | 1.54 | 0.08 | 0.93 | 0.08 | 95 | 80 | 99 | 120 |
2cX35 | 1.11 | 0.08 | 0.671 | 0.08 | 116 | 94 | 117 | 145 |
2cX50 | 0.082 | 0.078 | 0.495 | 0.078 | 140 | 110 | 140 | 170 |
2cX70 | 0.57 | 0.077 | 0.343 | 0.077 | 170 | 140 | 176 | 210 |
2cX95 | 0.41 | 0.074 | 0.247 | 0.074 | 200 | 165 | 221 | 250 |
2cX120 | 0.33 | 0.072 | 0.196 | 0.072 | 225 | 185 | 258 | 285 |
2cX150 | 0.27 | 0.072 | 0.159 | 0.072 | 255 | 210 | 294 | 315 |
2cX185 | 0.21 | 0.072 | 0.127 | 0.072 | 285 | 235 | 339 | 355 |
2cX240 | 0.16 | 0.072 | 0.0965 | 0.072 | 325 | 270 | 402 | 410 |
2cX300 | 0.13 | 0.071 | 0.0769 | 0.071 | 370 | 305 | 461 | 460 |
2cX400 | 0.1 | 0.07 | 0.0602 | 0.07 | 435 | 350 | 542 | 520 |
2cX500 | 0.1 | 0.07 | 0.0602 | 0.07 | 481 | 405 | 624 | 580 |
2cX630 | 0.1 | 0.07 | 0.0602 | 0.07 | 537 | 470 | 723 | 680 |
3cX1.5 | — | — | — | — | — | — | — | — |
3cX2.5 | — | — | — | — | — | — | — | — |
3cX4 | 1.581 | 0.097 | 1.581 | 0.097 | 34 | 28 | 30 | 44 |
3cX 6 | 1.57 | 0.097 | 1.57 | 0.097 | 43 | 37 | 40 | 55 |
3cX 10 | 1.55 | 0.08 | 1.55 | 0.08 | 57 | 48 | 53 | 74 |
3cX 16 | 1.557 | 0.08 | 1.557 | 0.08 | 78 | 61 | 70 | 94 |
3cX 25 | 1.54 | 0.08 | 0.93 | 0.08 | 95 | 80 | 99 | 120 |
3cX 35 | 1.11 | 0.08 | 0.671 | 0.08 | 116 | 94 | 117 | 145 |
3cX 50 | 0.82 | 0.078 | 0.495 | 0.078 | 140 | 110 | 140 | 170 |
3cX 70 | 0.57 | 0.077 | 0.343 | 0.077 | 170 | 140 | 176 | 210 |
3cX 95 | 0.41 | 0.074 | 0.247 | 0.074 | 200 | 165 | 221 | 250 |
3cX 120 | 0.33 | 0.072 | 0.196 | 0.072 | 225 | 185 | 258 | 285 |
3cX 150 | 0.27 | 0.072 | 0.159 | 0.072 | 255 | 210 | 294 | 315 |
3cX 185 | 0.21 | 0.072 | 0.127 | 0.072 | 285 | 235 | 339 | 355 |
3cX 240 | 0.16 | 0.072 | 0.0965 | 0.072 | 325 | 270 | 402 | 410 |
3cX 300 | 0.13 | 0.071 | 0.0769 | 0.071 | 370 | 305 | 461 | 460 |
3cX 400 | 0.1 | 0.07 | 0.0602 | 0.07 | 435 | 350 | 542 | 520 |
3cX 500 | 0.1 | 0.07 | 0.0602 | 0.07 | 481 | 405 | 624 | 580 |
3cX 630 | 0.1 | 0.07 | 0.0602 | 0.07 | 537 | 470 | 723 | 680 |
3.5X16 | — | — | — | — | — | — | — | — |
3.5X25 | 1.54 | 0.08 | 0.93 | 0.08 | 95 | 80 | 99 | 120 |
3.5X35 | 1.11 | 0.08 | 0.671 | 0.08 | 116 | 94 | 117 | 145 |
3.5X50 | 0.082 | 0.078 | 0.0495 | 0.078 | 140 | 110 | 140 | 170 |
3.5X70 | 0.57 | 0.077 | 0.343 | 0.077 | 170 | 140 | 176 | 210 |
3.5X95 | 0.41 | 0.074 | 0.247 | 0.074 | 200 | 165 | 221 | 250 |
3.5X120 | 0.33 | 0.072 | 0.196 | 0.072 | 225 | 185 | 258 | 285 |
3.5X150 | 0.27 | 0.072 | 0.159 | 0.072 | 255 | 210 | 294 | 315 |
3.5X185 | 0.21 | 0.072 | 0.127 | 0.072 | 285 | 235 | 339 | 355 |
3.5X240 | 0.16 | 0.072 | 0.0965 | 0.072 | 325 | 270 | 402 | 410 |
(Grouping factor)==No of Tray | ||||||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 6 | 8 | |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
2 | 0.84 | 0.8 | 0.78 | 0.77 | 0.76 | 0.75 |
3 | 0.8 | 0.76 | 0.74 | 0.73 | 0.72 | 0.71 |
4 | 0.78 | 0.74 | 0.72 | 0.71 | 0.7 | 0.69 |
5 | 0.77 | 0.73 | 0.7 | 0.69 | 0.68 | 0.67 |
6 | 0.75 | 0.71 | 0.7 | 0.68 | 0.68 | 0.66 |
7 | 0.74 | 0.69 | 0.675 | 0.66 | 0.66 | 0.64 |
8 | 0.73 | 0.69 | 0.68 | 0.67 | 0.66 | 0.64 |
Depth Facator (K5) | ||||||
Rating Factor | ||||||
0.5 | 1.1 | |||||
0.7 | 1.05 | |||||
0.9 | 1.01 | |||||
1 | 1 | |||||
1.2 | 0.98 | |||||
1.5 | 0.96 |
385 | 590 | 22.56 | 34.32 |
---|---|---|---|
430 | 670 | 28.20 | 42.90 |
480 | 780 | 37.60 | 57.20 |
530 | 900 | 47.00 | 71.50 |
590 | 1020 | 59.22 | 90.09 |
630 | 1140 | 75.20 | 114.40 |
660 | 1250 | 94.00 | 143.00 |
— | — | — | — |
— | — | — | — |
37 | 39 | 0.376 | 0.572 |
47 | 50 | 0.564 | 0.858 |
61 | 67 | 0.940 | 1.430 |
78 | 85 | 1.50 | 2.29 |
100 | 125 | 2.35 | 3.58 |
120 | 155 | 3.29 | 5.01 |
145 | 190 | 4.70 | 7.15 |
175 | 235 | 6.58 | 10.01 |
210 | 290 | 8.93 | 13.59 |
240 | 330 | 11.28 | 17.16 |
270 | 375 | 14.10 | 21.45 |
300 | 435 | 17.39 | 26.46 |
350 | 510 | 22.56 | 34.32 |
390 | 590 | 28.20 | 42.90 |
440 | 670 | 37.60 | 57.20 |
480 | 750 | 47.00 | 71.50 |
575 | 875 | 59.22 | 90.09 |
— | — | — | — |
— | — | — | — |
37 | 39 | 0.376 | 0.572 |
47 | 50 | 0.564 | 0.858 |
61 | 67 | 0.940 | 1.430 |
78 | 85 | 1.50 | 2.29 |
100 | 125 | 2.35 | 3.58 |
120 | 155 | 3.29 | 5.01 |
145 | 190 | 4.70 | 7.15 |
175 | 235 | 6.58 | 10.01 |
210 | 290 | 8.93 | 13.59 |
240 | 330 | 11.28 | 17.16 |
270 | 375 | 14.10 | 21.45 |
300 | 435 | 17.39 | 26.46 |
350 | 510 | 22.56 | 34.32 |
390 | 590 | 28.20 | 42.90 |
440 | 670 | 37.60 | 57.20 |
480 | 750 | 47.00 | 71.50 |
575 | 875 | 59.22 | 90.09 |
— | — | — | — |
100 | 125 | 2.35 | 3.58 |
120 | 155 | 3.29 | 5.01 |
145 | 190 | 4.70 | 7.15 |
175 | 235 | 6.58 | 10.01 |
210 | 290 | 8.93 | 13.59 |
240 | 330 | 11.28 | 17.16 |
270 | 375 | 14.10 | 21.45 |
300 | 435 | 17.39 | 26.46 |
350 | 510 | 22.56 | 34.32 |