Wire and cable is used to transmit power engineering, transmit information content and complete the electromagnetic induction heat transfer of a large class of welder goods. In the whole process of sampling inspection, found a lot of unqualified products, such shoddy goods to the normal operation of the power supply system planted many security risks.

1, the mark does not pass the cable and wire. Mark is the key way to identify the basic information of the cable and wire application, according to the specific content of the standard mark is: product specifications, specification models, standard number, enterprise name, origin, etc., in a certain identification interval, when the mark is not passed, it will lead to incorrect identification of the construction team, and more serious when it will cause electrical equipment safety accidents.

2, the structure of the specifications of the cable and wire. The key problem of the construction specification is that the protective sleeve is thin and thick, and the insulation layer is thin and thick. When the protective sleeve and insulation layer of the cable are not qualified, the compressive strength of the electrical equipment of the cable and wire will be seriously reduced, resulting in a reduction in the service life of the cable and wire. When it is serious, the cable and wire will be penetrated, and the insulation layer (protective sleeve) can not achieve all normal maintenance effects. Then the electrical equipment short circuit failure and fire accidents and other conditions.

3. Cable and wire with the tensile strength and elongation of the sheath insulation layer before embrittlement. The tensile strength and elongation of the insulation sheath before embrittlement immediately greatly shorten the service life of the cable and wire in the work, and in the construction of the project or in the long-term plug-in and high temperature natural environment, it is very easy to break the conductor and insulator, resulting in the exposure of the electric conductor, resulting in the risk of short circuit fault of electric shock accident. The key reason for its failure is the application of recycled particle production and manufacturing to reduce production costs, and the second is not a small and medium-sized enterprise with manufacturing qualifications.

4, electrical conductor resistor does not pass the cable line. Electrical conductor resistor is mainly used to evaluate whether the electrical conductor raw materials and their cross sections of cable and wire are in line with the key index value. When the conductor resistor exceeds the time limit, it expands the loss of the current flow on the route according to the increase of the hot wire and cable. The reason for the failure of the conductor resistor, the key into the company in order to better control costs, will account for 80% of the raw material cost of copper shrinkage, or reduce the cross-section of the conductor, or the application of recycled copper containing residue is too high, which leads to the conductor resistor of the cable and wire is more serious than the standard, in the whole process of application in addition to easy to cause fire accidents, It will also continue to accelerate the embrittlement of the cable sheath that is wrapped outside the cable line.

In the whole process of purchasing cables and wires, customers should pay attention to the following matters:

First, look at the appearance of the cable. The insulation layer of qualified products is soft, ductile and elastic, the surface is close, smooth and smooth. If the plastic of the encapsulated cable is very easy to be peeled off, there is a problem of insufficient compressive strength of the plastic.

Second, look at the cross section of the cable. The copper core or aluminum core surface of qualified products should have a metallic texture, and the blackened copper surface or the white aluminum surface indicates that it has been oxidized.

Third, pay attention to query the quality certificate when purchasing wire and cable. If the quality of the cable meets the standard, then the cable quality should also be tested, and it is not easy to have great problems.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098