Overhead Insulated Cable

 Overhead Insulated Cable

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）

                 d-----Actual outside diameter of the conductor （mm）

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