Product standard:
The product is manufactured according to the standard GB/T12706.1-2008, equivalent to IEC60502.
Application:
This product is suitable for use in rated AC voltage U0/U: 0.6/1kV circuit for transmitting and distributing electricity.
Installation and operation condition of cable
In the air
The distance between centers of single-core cables laid in parallel: cross-sectional area of conductor≤185mm²: 2 times of the cable diameter; cross-sectional area of conductor≥240 mm²: 90mm.
Circumstance air temperature: 40°C.
Max. continuous operating temperature of conductor:70°C.
In the air
The distance between centers of single-core cables laid in parallel: cross-sectional area of conductor≤185mm²: 2 times of the cable diameter; cross-sectional area of conductor≥240 mm²: 90mm.
Circumstance air temperature: 40°C.
Max. continuous operating temperature of conductor:70°C.
Current carrying rating factors for different circumstance air temperature:
|
Circumstance air temperature |
20°C
|
25°C
|
30°C
|
35°C
|
40°C
|
45°C
|
|
Rating factor
|
1.29
|
1.22
|
1.15
|
1.08
|
1.0
|
0.91
|
Direct in the ground
The single-core cables are installed separately, the distance between the cable center is 2 times of the cable diameter.
Soil temperature: 25°C.
Max. continuous operating temperature of conductor: 70°C.
Thermal resistivity of soil: 1.0°C.m/W.
Depth of direct-buried: 0.7m.
The single-core cables are installed separately, the distance between the cable center is 2 times of the cable diameter.
Soil temperature: 25°C.
Max. continuous operating temperature of conductor: 70°C.
Thermal resistivity of soil: 1.0°C.m/W.
Depth of direct-buried: 0.7m.
Current carrying rating factors for different soil temperature
Name, type and specifications:
| Type | Designation |
| VV |
Copper conductor,pvc sheath,pvc insulated electric cable
|