Phone:15988845546

Contact Us

Company Name: Hangzhou Linyou Technology Co., Ltd
Address: The Taihu Lake Yuan Zhen, Lin'an District, Hangzhou City, Zhejiang Province
Mobile/WeChat: 15988845546
Email: yeva@linksutech.com
Contact Person:Yeva Zheng

News

Position > Home > > News
Introduction to the difference between the national standard cable and non-standard cable
Published:2016-02-24     readings:     glyph:【big middle small

When choosing cables, you should choose cables according to your site use, do not be greedy for cheap. Thought the cable price is cheap and can guarantee that it is the national standard, nine times out of ten are playing ball. Lying to users who are not professional and do not understand the industry. In order to enable the majority of users to more clearly recognize the quality standards of cables and wires and self-judgment of the difference between the national standard and non-standard. Here we combine engineering users and cable industry often encountered in the actual situation, so that we can do a simple understanding.

Cables and wires are generally used in engineering users and construction projects mainly these three kinds of cables appear:

1, the national standard cable: according to the state introduced the relevant cable standard technology produced by the cable referred to as the international line.

2, line standard cable: according to industry standards, mainly with less jerry-built, but does not affect the performance of the large use.

3, non-standard cable: in order to adapt to the needs of the city should be born of the product. Nowadays, the application of wire and cable is more and more widely, and with it, the types of wire and cable sold on the market is also more and more.

So, how to distinguish between wire and cable "national standard" and "non-standard" it?

Suggest that you look at, two test, three weighing, four than the price, five look at the copper, six quality testing, six strokes to see the difference.

A look: to see whether the wire and cable products have quality system certification, to see whether the certificate of conformity is standardized, to see whether there is a factory name, address, inspection stamps, date of production, to see whether the wire is printed on the trademark, specifications, voltage, etc.. Also look at the cross-section of the copper core of the wire, superior copper color bright, soft color, otherwise it is inferior.

Second test: you can take a wire head with a hand repeatedly bending, where the feel of soft, good fatigue strength, plastic or rubber feel elastic and no cracks on the wire insulator, is superior.

Three weighing: good quality wire and cable, generally per 100m weight are within the specified weight range. Such as the commonly used cross-sectional area of 1.5mm2 plastic insulation single-stranded copper core wire, per 100m weight of 1.8-1.9kg; 2.5mm2 plastic insulation single-stranded copper core wire, per 100m weight of 3-3.1kg; 4.0mm2 plastic insulation single-stranded copper core wire, per 100m weight of 4.4-4.6kg and so on. Poor quality wire weight is not enough, either the length is not enough, or the wire copper core has too many impurities. If the cable, especially large-size cables, weighing the earth's way is the most reflective of the cable whether the copper content of the standard and conductor cross-section of the simplest method of whether the standard is sufficient, generally have to steal copper to do a small cross-section of the cable, if the cable's copper content after the weighing of the weight is not up to the weight of the state regulations allow for error within the scope of the weight, can be basically identified as non-standard.

Four than the price: due to the low production cost of counterfeit and shoddy wire, therefore, traders in the sale, often in the guise of inexpensive and good quality low-priced sales, so that people are fooled. Therefore, when buying, beware, don't for the merchants boasted "cheap and good value" to the mind, and ultimately cheated. Five look at the copper. Qualified copper wire copper core should be purple-red, shiny, soft touch.

  Five look at the copper material: shoddy copper core wire copper core is purple-black, yellowish or whitish, more impurities, poor mechanical strength, poor toughness, a little force that will break, and the wire is often broken within the phenomenon. Check, you just peel off a section of the wire, and then use a piece of white paper on the copper core slightly rubbed, if the white paper on the black material, indicating that more impurities in the copper core, can be identified as "non-standard" wire and cable.

Six quality testing: there are differences in the quality of the cable, can be sent to a third-party testing organization for testing. Based on the authority of the test report is qualified.

 
Previous:Environmental cable performance and technical requirements
Next:Introduction to the practice of dry-wrapped wire and cable head and heat-shrinkable cable head