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Standard compiled with:
GB/T12706-2002 Power cables with extruded insulation and their accessories for rated voltage from 1KV (Um =1.2KV) up to 35KV (Um =40.5KV)
IEC60502-1997 Power cable with extruded insulation and their accessories for rated voltage from 1KV up to 30KV
Service performance
Operating temperature:
Max permissible continuous operating temperature of conductors: 70°C.
Short circuit temperature of conductor:
Max short circuit temperature: 160°C. (less than 5 second)
Laying temperature:
The laying temperature is less than 0°C.
Laying condition and its parameters when current capacity of cables is calculated:
Method of laying | Basic ambient temperature | Soil thermal resistivity | |
In air | 40°C | --- | |
Direct burial | 25°C | 1°C·M/W |
Layout of cables:
Single core cables: In parallel (spacing side by side=1D D-0verall diameter)
Multi-core cables: laid individually
Constructed profiles of the products
1. Conductor 2. INsulation 4. Binding tape 7. Sheath
Model | Description | Main Application | |
Cu | Al | ||
VV | VLV | Cu or Al conductor PVC insulated PVC sheathed power cable | For laying indoor and outdoor, unable to bear external mechanical force but the traction force during laying. Laying single core cable in magnetic duct is not permissible |
.
Cu PE insulated PE sheathed power cable