Direct identification of copper stranded wire?

1、First of all: start observing the appearance of copper wire when purchased, generally good copper twist its appearance compared to light copper, copper stranded wire without obvious damage and scratches, there will be no obvious oxidation reaction caused by discoloration.The outside color is more uniform, no black spots, no cracks, even distance uniform.Copper stranded wire that meets the above criteria is a good choice of copper wire.

2、Second: see copper wire specification type.Selection of copper wire needs to comply with the wire size and specifications, copper stranded wire is generally drawn within the specified range, can not exceed the process standards, or is considered invalid stranded wire.The monofilaments that make up the strand must meet the characteristics of uniformity and neatness, and comply with technical regulations.

3、Again: the purchase of copper wire also need to observe the distribution and composition of the structure to see if there is a short-term, leakage, copper strand loose strand phenomenon, these phenomena can generally be observed by the naked eye, you need to carefully check the quality of the copper wire, you can not choose unqualified products for the production of wires and cables, which can lead to serious safety accidents.

4、Finally: when buying copper wire, you should also pay attention to whether the soldering process is reliable, the interface of the soldered part is neat, and there is no unevenness in the copper strand.Welding interface should be neat and tidy, repair leveling, friction round, can not be handled, welding head diameter generally can not exceed 0.2 mm; adjacent two copper wire welding should be maintained at a certain distance, uniform.

Hard and soft copper wires are used in different applications based on their characteristics.Hard copper strand is typically used where electrical conductivity is required and tension is relatively high, such as distribution lines and building conductors, and transmission cables.Soft copper wire is usually thinner than hard copper wire, and copper stranded wire is particularly conductive and ductile.We see it most often in household wire, which is also used in electric motors, such as power cables and communications equipment, conductors.

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