Ek's Home   |   Forum   |   Chat   |   Electrical Links   |  





Subject - Cable specifications
agan Hi all , we are doing a electrical cabling on a offshore plat form.How can i use the correct rating of cable.For example a 95mm sq(surface area), 3 core cable, how much current it can draw maximum.we are planning to use multiple runs of such cables, how does it help.How much is the permissible bend radius of a cable? wat do the manufactorer of cable mean by 0.6/1 KV?
Pse assist

Regards
Agan
sijagur hello agan,
Cable selection must be based on load, so if you want to choose cable, the first time you have to do is determine how big current that will flow trough the cable. For example a 95 mm2 3 cores cable, (If i look from tabel from a manufacturer)has current carrying capacity about 320 Ampere in air at 20 C degree. This current carrying capacity (CCC) of cables is also depend on installation environment, some safety factor (<1) must be multiplied with CCC, so maksimum load for 95 mm2 cable must be less than 320 A. For cable safety, bend radius may not more than 90 deg. And 0.6/1 kV is voltage rating of cable, usually they use symbol Uo/U. Uo is the voltage between condutor and earth, while U is the voltage between phase of conductors. So 0.6/1 kV mean maksimum voltage that can be introduced to the cable is 0.6 kV between conductor and earth, and 1 kV between phase of conductors.