Selection of the number of power cable cores in Henan YJV power cable Co., Ltd

  　　  Selection of the number of power cable cores of Zhengzhou first cable Co
, Ltd
1
When the neutral point of 1kV and below power supply is directly grounded, the number of cable cores of three-phase circuit shall comply with the following provisions: 1
1 connection and grounding of protective wire and exposed conductive parts of power receiving equipment: (1) when the protective wire and neutral wire share the same conductor, four core cable shall be used (2) when the protective wire and neutral wire are independent, five core cable should be used; When the provisions of article 5
1
16 of this specification are met, four core cables and other protective wire conductors can also be used 1
2 if the grounding of the exposed conductive part of the power receiving equipment and the grounding of the power supply system are independent, four core cables shall be used 2 when the neutral point of 1kV and below power supply is directly grounded, the number of cable cores of single-phase circuit shall comply with the following provisions: 2
1 connection and grounding of protective wire and exposed conductive parts of power receiving equipment: (1) when the protective wire and neutral wire share the same conductor, two core cable shall be used (2) when the protective wire and neutral wire are independent, three core cable should be used; Under the condition of meeting the provisions of article 5
1
16 of this specification, it can also be composed of two core cable and another protective wire conductor 2
2 if the grounding of the exposed conductive part of the power receiving equipment and the grounding of the power supply system are independent, two core cables shall be used 3 for circuits with large working current or underwater laying, single core cable can be used when the technology and economy are reasonable 4 in addition to the provisions of articles 1, 2 and 3 of this specification, three core cable should be used for AC power supply circuit 5
For DC power supply circuit, two core cable should be used; Single core cables can be used when required