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Power cable core number selection

Information Source:Henan Huadong Cable Co., Ltd Release date:2014-02-25

1 1kV and below power neutral directly grounding, cable core number selection of three-phase circuit shall comply with the following provisions:

1.1The exposed and electric equipment protective lines can be conductive parts connected with the grounding of the situation:

(1) to protect the line and neutral line combined with a conductor, should use the four core cable.

(2) to protect the line and neutral line separately, appropriate uses five core cable; when meet the provisions of article 5.1.16 of this standard, also can use four core cable and the protection line another conductor.

1.2 electrical equipment exposed conductive parts of the grounding and power system grounding independent situation, should use the four core cable.

2 1kV and below power neutral directly grounding, cable core number selection of single-phase circuit shall comply with the following provisions:

2.1The exposed and electric equipment protective lines can be conductive parts connected with the grounding of the situation:

(1) to protect the line and neutral line combined with a conductor, should use the two core cable.

(2) to protect the line and neutral line separately, should adopt the three core cable; in case of meeting the provisions of article 5.1.16 of this standard, also can use two core cable and the protection line another conductor.

2.2 electrical equipment exposed conductive parts of the grounding and power system grounding independent situation, should use the two core cable.

3 large working current loop or underwater laying, when the technical and economic comparison is reasonable, can be a single core cable.

4 in addition to the provisions of the standard first, 2, 3 cases, AC power supply circuit should use three core cable.

5 DC power supply circuit, should adopt the two core cable; when needed can be a single core cable.

Please kindly check our different cores power cable specifications via http://www.qscable.com/power-cable/!

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