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How to identify the quality of the merits of the wire

2015-04-02

Wire is an integral part of home life material determines the quality of household electricity wires are secure, and therefore how to identify the quality of the wire is particularly important. How to identify the quality of the merits of the wire? Wire is an integral part of home life material determines the quality of household electricity wires are secure, and therefore how to identify the quality of the wire is particularly important。
Methods / procedures
1, depends. See whether the quality system certification; see certificate whether the norms; to see whether the name and address, test chapter, date of production; see if printed with trademarks, specifications, and voltage on the wires. Copper core of cross section depends on the wire, Excellence for copper color bright, soft color, Tongxin in reddish yellow, indicating better quality of copper used, but the pale yellow is the reaction of low-quality copper. Otherwise it is defective。
2、To try. Preferably the first hand repeatedly bending a wire, all soft, anti-fatigue strength, elastic plastic or rubber handle and no cracks on the wire insulation is excellent products。
3、The interception of a dielectric layer, see its core is located in the middle insulating layer. Is not centered eccentricity phenomenon caused due process is not high, and in the use of small power can live in peace if, once the electricity capacity, thinner side is likely to be current breakdown.

注意事项

Unmissable its length and diameter thickness there is no tricks. Specified in the relevant standard,Error wire length should not exceed5%,Sectional diameter must not exceed0．02%,But the market there is a lot on the length Duanjinshaoliang,Fraud in cross-section(As indicated cross-section6Line square millimeters,Actually only4．5Mm thick)The phenomenon。