2014年12月18日星期四

Optional elements of cable

Wire and cable as the main carrier of power transmission, are widely used inelectrical equipment, lighting, household appliances and other lines, its quality directlyaffects the quality of the project and the life and property safety of consumers. There are a lot of wire varieties on the market, want to use the appropriate wire according to the power load your.
On the market sell wire some cheap and some more expensive, some people oftenbut to relatively cheap, cheap, wires, often have many did not reach the performancethat he shows, there may bring many security hidden trouble to yourself. Productiontechnology content of wire is not too high, the raw material is not much difference, if cheap too much, or cut corners, or the number of not giving enough. How to identify it. I give you several micro usb cable for easier identification:
1, to look at the packaging, GB wires tend to do relatively well, neat, hand up have asense of quality.
2, to open the package to see the inside of the wire, the wire GB 1.5 - -6 square wirerequirement is thick skinned (insulation thickness) is 0.7mm, too thick is non-standard, corresponding to his inner core is sure enough, line skin you can force pull,not easy to tear is general is the national standard of
3, with the fire, extinguished within 5S after leaving, have certain flame retardant function for GB line.
4, look at the inner core, the inner core material (copper) brightness higher copper is better, and photometric uniform, shiny, no sense of hierarchy. The national standard requirements within the core must use oxygen free copper. Non standard such asblack rod copper, there may be hidden dangers of accidents.
5, the thickness of inner core countries have certain requirements, but not very strict.But not a lot of mistakes, only a very small a little bit error generally with the eyes of the.
6, length, no compulsory must play fiber optic cable , but there are many manufacturers alsoplayed meters, not necessarily GB dozen meters, but the General GB generally notdozen meters. Non standard dozen meters that is only a kind of means.
7, the provisions of the state on the wires must play a certain identity, the maximumnot more than 500mm have identified the same next play out, above the generalproduct trademark, factory name, the implementation of standards

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