Wooden, Steel-Wooden Drums or according to customers' request
5-10day,according to cusotmers' request
Founction: The cable is used as power distribution and transmission line at rated voltage 0.6/1 KV
which can be fixed installed.
1)The long time working temperature of cable should not be higher than 70°C.
2)When core is in short-circuit (max 5s)the temperature should not exceed 160°C.
3)While installation the ambient temperature should not lower than 0°C,and the
bending radius should not be less than 10 times of outer diameter of cable.
The installation temperature should not cover 0°C, if the ambient temperature is lower than 0°C, the cable should be pre-heated.
The bending radius of cable should not less than 8 times.
After installation, the cable should withstand voltage test for 15 min/3.5kv dc .
In the air
As the single core cable laying in parallel, the distance between the cable; center is 2 times(for cables, which cross sectional area of conductor<=185mm2) and 90mm(for cables, which cross sectional area of conductor>=240mm2)
Max. temperature of conductor:70°C.
Rating factors of current rating for ambient temperature:
Direct in ground:
When the single core cables are installed separately, the distance between the cable:center is 12 times of the cable diameter.
Ambient temperature: 25°C.
Max. temperature of conductor: 70°C.
Soil thermal resistivity: 1.0°C.m/W.
Rating factors under different ambient temperature.