Introduction of Overhead Insulated Cable
The rated voltage 10 kv, 35 kv overhead insulated cable is fit for AC rated voltage U (Um) 10 kv and 35 kv overhead power transmission line.
Standard of Overhead Insulated Cable
GB 14049-1983 "Rated voltage 10KV, 35KV overhead insulated cable"
Characteristics of Overhead Insulated Cable
1.Rated voltage: 10KV、35KV;
2.Cable laying temperature not less than 20 ℃;
3.When the short circuit (5 s) the highest temperature of the cable:
HDPE insulation: 150℃ XLPE insulation: 250℃;
4.The maximum long-term operating temperature of the cable conductor:
HDPE insulation: 75℃ XLPE insulation: 90℃;
5.Cable single-phase ground fault time is not more than 1min each time, but also the longest not more than 8h each, the cumulative total of not more than 125h;
6.The allowable bending radius of the cable shall not be less than:
a)Single core cable: 20（D+d)±5%mm,TR structure: 20D mm
b)Multi - core cable: 15（D+d)±5%mm
Formulas: D-----Actual outside diameter of the cable（mm）