ELECTRICAL
Laying conditions at trefoil formation are as below: -Soil thermal resistivity: 120˚C.Cm/Watt -Burial depth: 0.5m -Air temperature: 25°C | Frequency: 50Hz
NOMINAL CROSS SECTIONAL AREA mm2 |
MAXIMUM CONDUCTOR DC RESISTANCE AT 20OC Ω/Km |
MAXIMUM CONDUCTOR AC RESISTANCE AT 50 Hz Ω/Km |
COPPER SCREEN SCC For 1 second KA |
CURRENT CAPACITY RATING Laid in free air |
NOMINAL CROSS SECTIONAL AREA mm2 |
MAXIMUM CONDUCTOR DC RESISTANCE AT 20OC Ω/Km |
MAXIMUM CONDUCTOR AC RESISTANCE AT 50 Hz Ω/Km |
COPPER SCREEN SCC For 1 second KA |
CURRENT CAPACITY RATING Laid in free air |
| 16 |
1/91 |
2/435 |
1/51 |
82 |
| 25 |
1/2 |
1/53 |
2/36 |
111 |
| 35 |
0/868 |
1/107 |
3/31 |
137 |
| 50 |
0/641 |
0/817 |
4/72 |
168 |
| 70 |
0/443 |
0/565 |
6/61 |
215 |
| 95 |
0/32 |
0/408 |
13/59 |
264 |
| 120 |
0/253 |
0/323 |
17/17 |
309 |
| 150 |
0/206 |
0/263 |
21/46 |
357 |
| 185 |
0/164 |
0/209 |
26/47 |
416 |
| 240 |
0/125 |
0/159 |
34/34 |
499 |
| 300 |
0/1 |
0/128 |
42/93 |
581 |
| 400 |
0/0778 |
0/099 |
57/23 |
685 |
| 500 |
0/0605 |
0/077 |
71/54 |
808 |
| 630 |
0/469 |
0/06 |
90/14 |
946 |
| 800 |
0/0367 |
0/047 |
114/47 |
1105 |
| 1000 |
0/0291 |
0/037 |
143/08 |
1280 |
Laying conditions at trefoil formation are as below: -Soil thermal resistivity: 120˚C.Cm/Watt -Burial depth: 0.5m -Air temperature: 25°C | Frequency: 50Hz