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How to distinguish the quality of insulated cables

2022-08-19 09:04
​If you want to buy insulated cables, how to distinguish their quality needs to be considered from many aspects.

If you want to buy insulated cables, how to distinguish their quality needs to be considered from many aspects. After all, it is also a matter of our own interests.

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Methods for distinguishing good and bad insulated wires:

  • Look at the appearance and certificate: we look at the certification certificate of the quality system required by the cable manufacturer to see whether the certificate is standard; Whether there is factory name, address, inspection seal, production date, etc. It also depends on whether the cable itself has a trademark, specification, voltage, etc.

  • Weighing: wires of good quality are generally within the specified weight range. For example, the commonly used plastic insulated single strand copper core wire with a cross-sectional area of 1.5 square meters has a weight of 1.8-1.9kg per 100m, and the plastic insulated single strand copper core wire with a cross-sectional area of 2.5 square meters has a weight of 3-3.1kg per 100m. The cable with poor quality has insufficient weight, or the length is insufficient, or the copper core impurities of the wire are too much.

  • To try: take a section of electric wire and bend it repeatedly. The wires with soft feel, good resistance, high elasticity of plastic or rubber and no crack on the wire insulation are generally national standard wires.

  • Look at the price: because poor wires are generally produced with poor materials in order to reduce the cost, the price is generally one of the important means to distinguish.

  • Look at the wire core: the qualified wire core has luster and good feel. There are many low-quality impurities, poor mechanical strength and insufficient flexibility, and it will break with a little force.


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