Wire and cable knowledge national standard for wir

2022-07-22
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In order to obtain huge profits, fake low-quality wire and cable producers, regardless of the interests of consumers, produce a large number of low-quality wire and cable products, disrupt the wire and cable market and damage the interests of users. Therefore, it is very important to choose wires and cables correctly. What kind of products meet the national standards of wires and cables? Let's follow the editor below

in order to obtain huge profits, fake low-quality wire and cable producers, regardless of the interests of consumers, produce a large number of low-quality wire and cable products, disrupt the wire and cable market and damage the interests of users. Therefore, it is very important to choose wires and cables correctly. What kind of products meet the national standards of wires and cables? Let's follow the editor below

national standard for wire and cable

first, the characteristics of wire and cable products that meet the requirements of national standards

first, there are " CCC" Certification mark. Because wire and cable products are closely related to the lives of consumers, their quality and safety directly affect the personal and property safety of consumers. Therefore, wire and cable products are national compulsory safety certification products, and all production enterprises must obtain the certification of China National Electrical Product Certification Commission " CCC" Certification, obtain " CCC" Certification mark, with "e on the certificate of conformity or product; CCC" Certification mark

secondly, the package is exquisite. The packaging of wire and cable products is the same as other products. Large and medium-sized formal enterprises that produce products that meet the requirements of national standards pay great attention to product packaging

third, the appearance of the product is smooth and round, and the color is uniform. Wire and cable enterprises whose products meet the requirements of national standards, in order to improve product quality and ensure that products meet the requirements of national standards, strictly control the purchase of raw materials, production equipment, production technology and other aspects. Therefore, the appearance of the produced wire and cable products meets the standard requirements: smooth, round and even color. The appearance of fake and inferior products is rough and lusterless. For rubber insulated flexible cables, the appearance is required to be round, and the sheath, insulation and conductor are tight and not easy to peel off. The fake and inferior products have rough appearance, large ovality and low insulation strength of the sheath, which can be torn off by hand

fourth, the conductor is glossy, and the DC resistance and conductor structure size meet the requirements of national standards. The products of wires and cables that meet the requirements of national standards, whether aluminum conductors or copper conductors, are relatively bright and oil-free, so the DC resistance of the conductor fully meets the national standards, with good conductivity and high safety

fifth, the length is accurate. Length is the main intuitive method to distinguish between products that meet the requirements of national standards and fake and inferior products. The length of wire and cable products that meet the requirements of national standards meets the national standard 100± 0.5m (taking 100 meters as the standard, with an allowable error of 0.5 meters) to protect the interests of consumers

sixth, the certificate of conformity is clearly marked. Is the product certificate of wire and cable that meets the requirements of national standards printed clearly? quot; CCC" The certification mark, trademark, model specification, rated voltage, length, inspection, manufacturing date, certification number, executive standard, factory name, address, telephone and other marks are clear and consistent with the product, and some enterprises mark " on the certificate of conformity; Inform users " And so on, so that consumers can choose and install them correctly

II. Correctly choose wire and cable products that meet the requirements of national standards

first, recognize the identification of the certificate of conformity. When purchasing, be sure to check whether there is "e on the certificate of conformity; CCC" Whether the certification mark, model and specification, rated voltage, length, manufacturing date, certification number, inspection, executive standard, factory name, factory address and other identifications are clear

secondly, pay attention to packaging. When purchasing, pay attention to exquisite packaging, clear printing, complete models and specifications, factory name, address, etc

third, check the appearance of the product. When shopping, pay attention to check that the appearance should be smooth and round, with uniform color and good hand feeling. For rubber wires and cables, the sheath and insulation can be burned with cigarette butts, and the surface is completely free of damage

fourth, check the conductor. The conductor shall have a certain gloss and moderate softness, and the structural size of the conductor shall meet the requirements of national standards

fifth, check the length. When shopping, don't be greedy for cheap prices. Choose wires and cables with 90m or 80m, or even without length marks. The length must meet 100± 0.5m standard requirements

at present, in the wire and cable sales market, some manufacturers, in order to attract users and mislead consumers, have made products (especially plastic wires) 90 meters per lap regardless of the national standard products, damaging the interests of consumers and disrupting the wire and cable sales market. Why do these manufacturers sell their products in 90 meters? The reason is that less than 10 meters, lower prices, misleading consumers. For example, the PVC insulated copper core plastic wire bv2.5 mm2 produced by a wire factory has a length of 90 meters printed on the certificate, and the actual length is 82 meters; The sales price of such a circle of bv2.5 mm2 is more than 50 yuan, which is 20-30 yuan less than the market price of a circle of 100 meters of bv2.5 mm2 qualified products that meet the standard production of 70-80 yuan. It violates national standards, seriously damages the interests of consumers, and disrupts the sales market of wires and cables

editor's summary: the above is the relevant content of the national standard for wires and cables. I hope it can help you. More decoration information is available. Please look forward to it

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