Introduction to the hazards of three common types of unqualified cables

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Introduction to the hazards of three common types of unqualified cables

Author：Henan Shenghua Click： Time：2019-10-26 00:00:00

Wire and cable play an important role in transmitting electricity and information in various industries, and the quality of cables is extremely important. It is related to whether production and work can proceed smoothly. If the quality of cables is poor, there will be serious safety hazards in power systems, communication systems, and so on.

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1. First of all, when purchasing cables, you need to look at the logo of the cable. The logo usually contains basic information about a manufacturer, and the logo of a qualified cable generally includes information such as product model, standard number, specification, factory name, site, etc. These information are all within a certain distance between the labels. However, if the logo is not qualified, it may cause operators to misidentify it during use, leading to accidents.

2. The second point is to check whether the size of the cable is qualified. The size mainly refers to the thickness of the cable sheath and insulation thickness. If the size of the cable does not meet the standard, the electrical strength of the cable will seriously fail to meet the standard, resulting in shortened service life and inadequate protection of the insulation layer. These are all very serious problems. Therefore, when selecting a cable, it is important to pay attention to the problem of not meeting the standard size.

3. The third point is conductor resistance, which is an important testing indicator of cables. When the conductor resistance exceeds the standard, it will increase the consumption of current transmission on the cable, increase the power cost of the enterprise, and the heating of the cable will also become serious, posing a safety hazard. Some manufacturers cut corners, use conductors with unqualified cross-sectional area, or use copper materials with low purity, resulting in excessive conductor resistance.

The above three categories are common and unqualified cable problems. Through the above learning, when purchasing cables, it is important to pay attention to:

Observe the appearance of the cable, check if the insulation layer is soft, tough, and smooth enough, and then look at the cross-section. Qualified copper cores have a very good metallic luster, while those with blackened surfaces may have problems.

The last and most important point is that when purchasing cables, you must pay attention to checking the quality certificate or purchasing a trustworthy brand. For example, the cables produced by Henan Shenghua Cable Group comply with Chinese standards (GB) and advanced standards of developed countries such as the International Electrotechnical Commission (IEC). They have multiple technical patent honors and are sold both domestically and internationally, making them your excellent choice.

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Introduction to the hazards of three common types of unqualified cables

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