BS 6622/BS 7835 Standard Single-Core MV Cables
Conductor: Plain Annealed Copper or Aluminum
Outer Jacket: PVC/PE/LSZH
Insulation: XLPE/EPR
Insulation Layer Parameters:
|
Nominal Cross Section
|
Thickness of Insulation at Nominal Voltage
|
||||
|---|---|---|---|---|---|
|
|
3.8/6.6KV (Um=7.2KV)
|
6.35/11KV (Um=12KV)
|
8.7/15KV(Um=17.5KV)
|
12.7/22KV(Um=24KV)
|
19/33KV(Um=36KV)
|
|
mm2
|
mm
|
mm
|
mm
|
mm
|
mm
|
|
70 – 185
|
2.5
|
3.4
|
4.5
|
5.5
|
8.0
|
|
240
|
2.6
|
3.4
|
4.5
|
5.5
|
8.0
|
|
300
|
2.8
|
3.4
|
4.5
|
5.5
|
8.0
|
|
400
|
3.0
|
3.4
|
4.5
|
5.5
|
8.0
|
|
≥500
|
3.2
|
3.4
|
4.5
|
5.5
|
8.0
|
Physical Characteristics:
Operating Temperature: up to 90°C
Temperature Range: -5°C (PVC jacket); -20°C (PE jacket)
Short-Circuit Temperature: 250°C (maximum duration of short-circuit not exceeding 5s)
Bending Radius: 12 x OD
|
Rated Voltage Uo/U
|
Operating Voltage (Um)
|
Test Voltage (rms)
|
|---|---|---|
|
3.8/6.6KV
|
7.2KV
|
|
|
6.35/11KV
|
12KV
|
25.5KV
|
|
8.7/15KV
|
17.5KV
|
35KV
|
|
12.7/22KV
|
24KV
|
51KV
|
|
19/33KV
|
36KV
|
76KV
|
APPLICATION:
The standard power single-core cables have a voltage range from 3.8/6.6KV to 19/33KV and a frequency of 50Hz. they are mainly used in a variety of places such as power supply stations, indoor and outdoor laying, in pipelines and tunnels, in mines and shafts, in direct burial in the soil and underwater at the bottom of the sea, etc. They are capable of withstanding considerable pressures and mechanical external forces, and axial tensile forces.
