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The Use Characteristics Of Aerial Cable Oct 25, 2017

The overhead cable is used for AC rated voltage $literal of 0.6/1kv and below.

Use characteristics of aerial cable: PVC Insulated cable conductor Long-term operating temperature of not more than 70 ℃, short-circuit (maximum duration of not more than 5S) conductor maximum operating temperature of not more than 160 ℃;

Use of aerial cable products: for AC rated voltage 10KV, Overhead Cable 35KV overhead power cable

Use characteristics of aerial cable: the long-term working temperature of cable conductor is no more than 90 ℃, and the maximum operating temperature of the conductor is no more than 250 ℃ when short circuit (longest duration is not more than 5S);

Aerial cable uses: Suitable for AC rated voltage 35KV and below overhead power lines, in towns, Overhead Cable high-rise buildings and forest areas such as high security requirements for use.

Use characteristics of aerial cable:

① rated voltage of 1, 10KV.

Long-term operating temperature of ② aerial cable:

PVC (PVC), Overhead Cable polyethylene (PE) insulation should not exceed 70 ℃;

Xlpe (XLPE) insulation should not exceed 90 ℃.

③ the maximum temperature of an overhead cable conductor at a short circuit (maximum duration of not more than 5 seconds);

PVC insulation does not exceed 160 ℃;

Overhead Cable Polyethylene insulation does not exceed 150 ℃;

XLPE insulation does not exceed 250 ℃.

④ overhead cable Laying temperature should not be less than 20 ℃.

⑤ allowable bending radius of overhead cables:

1KV Overhead Cable

Outer diameter of aerial cable d<25mm ... 4 D;

Outer diameter of aerial cable d≥25mm ... 6D.

Technical performance of aerial cable:

① conductors shall be tightly pressed round stranded conductors.

② bearing stranded wire should conform to the requirements of table 10.

③ insulation should be used in black weathering PVC, Overhead Cable polyethylene and cross-linked polyethylene.

④ overhead cables shall withstand the specified AC voltage test for 1 minutes and the insulation shall not penetrate.

⑤ has insulated shielding 10KV overhead cable, Overhead Cable should carry out partial discharge test, its discharging power should not be less than 20PC.