Power Cable

3.6/6 kV Cable Three cores Cu/XLPE/STA/PVC power cable  series is mainly for laying indoor, tunnel, channel and under ground, shaft with large differences of level and other conditions. XLPE Insulated Power Cable have been widely used in our country with the advantages of good electric capability to insure the safety, strong ability to resist short circuit,high long term working temperature ,and big volume of power transform. and this cable is easy to fix and repair.and so on

The choice of the rated voltage of cable

The rated voltage of cable is fit for the system pressure of cable and running condition.

U0rated working voltage between the conductor and screen or metal sheath.

Urated working voltage between conductors,

Umthe max. Voltage of cable.

The system is divided into two kinds as flowing according to the earth fault duration.

The rated voltage is decided according to the system voltage and type.

              The relation between the rated voltage and system voltage

Rated voltage

U0/U       System voltage       Type of system

       comparatively rated voltage   max voltage Um    

3.6/6

6/6   6

6     7.2

7.2   First type

Second type

6/10

8.7/10     10

10    12

12    First type

Second type

8.7/15

12/15      15

15    17.5

17.5 First type

Second type

12/20

18/20      20

20    24

24    First type

Second type

18/30      30    36    First type

21/35

      35

35    42

42    First type

Second type

36/63

48/63      63

63    72.5

72.5 First type

Second type

64/110     110  126  First type