1、 Executive standard: GB / T 14049-2008 (jklgyj and jklgyj / Q execute enterprise standard)
2、 Purpose: it is suitable for overhead power lines with AC rated voltage of 10kV.
3、 Service conditions:
1. The laying temperature of cables shall not be lower than - 20 ° C;
2. The maximum temperature of the cable in case of short circuit (the longest duration is not more than 5S)
XLPE insulated cable, not exceeding 250 ° C;
HDPE insulated cable, not exceeding 150 ° C.
3. Maximum long-term allowable working temperature of cable conductor:
XLPE insulated cable, not more than 90 ° C; HDPE insulated cable, not more than 75 ° C;
The cable with bearing structure is determined by the maximum long-term allowable working temperature of insulation.
4. Allowable bending radius of cable:
Single core cable 20 (D + D) ± 5%, mm;
Multi core cable 20 (D + D) ± 5%, mm;
Where:
D-actual outer diameter of cable, mm;
D-actual outer diameter of cable conductor, mm;
