High Voltage XLPE Swa/Sta Armored Copper Cable

Uo is the AC rated voltage(effective value)of metal screen, metal armor and metal sheath of conductor used in power cable design. The insulation structure design of cable and electric test all adopt Uo as the standard. It reflects the insulation level of power cable.

U is the AC rated voltage(effective value)of phase conductor in power cable design. It is not only related to insulation level of power cable, but also to system earthing style and power cable category in using power cable.

Um is the maximum value of the highest system voltageto be borne by equipment.

2. Category of Power Cable

According to the sustained time of earthing breakdown, power cable is divided into two categories:

Category 1: The sustained time of earthing breakdown does not exceed 1 minute, that is, it requires a system when any phase conductor contacts the earth or earthing conductor, can separate the phase conductor from the system in 1 minute.

Category 11: The sustained time of each earthing breakdown usually should not exceed 1 hour, the longest not exceeding 8 hours and the accumulated time in a year should not exceed 125 hours.

All type of Medium Voltage XLPE Insulated PVC Sheathed Power Cable :
1). 3.6/6(7.2)kV,3.6/6.6(7.2)kV, Single Core, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
2). 6/10(12)kV,6.35/11(12)kV, Single Core, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
3). 8.7/10(15)kV, Single Core, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
4). 12/20(24)kV, 12.7/22(24)kV, Single Core, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
5). 18/30(36)kV,19/33(36)kV, Single Core, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
6). 3.6/6(7.2)kV,3.6/6.6(7.2)kV, Three Cores, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
7). 6/10(12)kV,6.35/11(12)kV, Three Cores, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
8). 8.7/10(15)kV, Three Cores, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
9). 12/20(24)kV, 12.7/22(24)kV, Three Cores, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.
10). 18/30(36)kV,19/33(36)kV, Three Cores, Al or Cu/XLPE/CTS/PVC Un-armoured Power Cable.

Application:
Medium Voltage XLPE Insulated power cable is used to transmit and distribute power in power transmission and distribution system of 3.6kv~35kV . It is generally applied to the fields including power, construction, mines, metallurgy, petrochemical industry and communication in complete replace of oil immersed paper insulated power cable.

Property:
1.The highest allowed operating temperature of conductor for long-term working is 90 degrees.
2.In short circuit (Max long term is no more than 5 seconds),the highest temperature for conductor is no more than 250 degrees.
3.the environmental temperature of operating in air should be no more than 40 degrees, and 25 degrees underground.
4.Excellent electrical performance, resistance to chemical corrosion.

It shows us the most common sizes of non armoured power cable, but other sizes to any recognized standards or customer specification can also be supplied as per customer’s requirements.