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Operating Characteristics of Overhead Insulated Cables with Rated Voltage of 10kV and 35kV
2013-01-21
1) Rated voltage 10kV, 35kV.
2) The cable laying temperature shall not be lower than -20 ℃.
3) The maximum temperature of the cable during short circuit (the longest duration does not exceed 5s):
XLPE insulation 250 ℃;
High density polyethylene insulation 150 ℃;
4) Maximum long-term allowable working temperature of cable conductor:
A cable with load-bearing line structure is determined by the maximum long-term allowable working temperature of insulation:
XLPE insulation 90 ℃;
High density polyethylene grade 75 ℃;
B No load-bearing line structural cable (under consideration)
5) Allowable bending radius of cable
The allowable bending radius of the cable shall not be less than the diameter of the cylinder used in the bending test of the cable.
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