3.6/6.0 to 18/30 KV XLPE Three Core Insulated Cables
Three core cables 3.6/6.0 KV to 18/30
KV Copper or Aluminium conductors,
XLPE Insulated Armoured Cables
| Normal Area of Conductor |
In Air
|
In Ground |
In Duct |
| Laid Singly |
Laid Singly |
Laid Singly |
| Copper |
Aluminium |
Copper |
Aluminium |
Copper |
Aluminium |
| Sqmm |
A |
A |
A |
| 50 |
218 |
162 |
214 |
153 |
184 |
130 |
| 70 |
263 |
201 |
260 |
188 |
218 |
159 |
| 95 |
329 |
239 |
306 |
221 |
260 |
192 |
| 120 |
373 |
282 |
347 |
255 |
295 |
216 |
| 150 |
428 |
316 |
387 |
288 |
337 |
245 |
| 185 |
488 |
368 |
438 |
322 |
377 |
279 |
| 240 |
567 |
431 |
499 |
365 |
433 |
322 |
| 300 |
647 |
488 |
551 |
418 |
478 |
361 |
| 400 |
736 |
565 |
611 |
471 |
540 |
414 |
Operating conditions:
Ambient air temperature: 30°c
Ground temperature: 20°c
Depth of laying: 0.8m
Thermal resistivity of soil: 1.2 K.m/W
Above values can be applied safety for Unarmoured cables also.