• Selection of cable cross-sectional area

    Selection of cable cross-sectional area

    19-10-2018

    The selection of the cable cross-sectional area is related to the amount of capital contribution, the loss of the line and the voltage quality, and the service life of the cable. If the cross-sectional area is too small, the voltage quality will be reduced, the line loss will be too large, and the cable will be overheated and burnt. If the cross-sectional area is too large, the initial investment ...

  • What are the advantages of XLPE cable and oil-paper cable?

    What are the advantages of XLPE cable and oil-paper cable?

    13-10-2018

    Answer: (1) Easy to install because it allows a small minimum bending radius and is light in weight; (2) Not subject to line drop; (3) Good thermal performance, allowing high operating temperature and large transmission capacity; (4) The cable accessories are simple and all are dry structures; (5) Simple operation and maintenance, no oil leakage problem; (6) the price is lower; (7) High reliabilit...

  • What are the requirements for clips for fixed AC single-core cables?

    What are the requirements for clips for fixed AC single-core cables?

    30-09-2018

    What are the requirements for clips for fixed AC single-core cables? why? Answer: The clamp should be free of iron to form a closed magnetic circuit. This is because when the cable core passes current, magnetic flux is generated around it. The magnetic flux is proportional to the current passing through the core. If a magnetic material such as iron is used, according to Electromagnetic induction k...

  • What kinds of insulated wires are there?

    What kinds of insulated wires are there?

    21-09-2018

    Answer: There are commonly used insulated wires: polyvinyl chloride insulated wire, PVC insulated wire, nitrile polyvinyl chloride mixture insulated cord, rubber insulated wire, agricultural underground direct buried aluminum core plastic insulated wire, rubber insulated cotton yarn Textile cords, PVC insulated nylon sheathed wires, PVC insulated cords for power and lighting, etc.

  • What regulations should be followed when selecting the cross section of a power cable?

    What regulations should be followed when selecting the cross section of a power cable?

    14-09-2018

    A: The choice of power cable should follow the following principles: (1) The rated voltage of the cable is greater than or equal to the rated voltage of the power supply system at the installation point; (2) The continuous allowable current of the cable shall be equal to or greater than the maximum continuous current of the power supply load; (3) The core section must meet the stability requiremen...

  • How to distinguish between

    How to distinguish between "national standard" and "non-standard" of wire and cable?

    08-09-2018

    It is recommended that you look at it, two tests, three weighs, four price, five copper, six quality tests, and six strokes. A look: look at the wire and cable products with or without quality system certification, see if the certificate is standardized, see if there is a factory name, site, inspection chapter, production date, and see if the trademark is printed on the wire, specifications, volta...

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