Cable joints are a basic process for electrical work and they are also a very important process. The quality of the cable connector is directly related to the long-term safe and reliable operation of the entire line. The basic requirements for cable joints are: strong and reliable connection, small joint resistance, high mechanical strength, corrosion resistance and oxidation resistance, and good electrical insulation performance. The following small series introduces the use of cable joints and cable connector purchase points.
Cable connector tips
1, the use of simple technology, rubber viscosity is moderate, easy to mix and inject, can be used to fill small holes or components.
2, high and low temperature resistance, cable waterproof joint products after vulcanization in the -50 °C ~ +250 °C temperature range to maintain flexibility, long-term use.
3, muddy water moisture, salt spray resistance, ozone resistance, weather aging performance.
4, high dielectric strength, low dielectric loss, excellent arc resistance, corona performance. Even in water, it has waterproof, anti-corrosion and insulation functions.
5, vulcanized rubber moderate strength, can be opened by hand, easy to clear and repair. After overhaul, the re-injected silicone rubber can be integrated with the front rubber to maintain good sealing performance.
6. Insert the probe of the circuit probe into the hose connector and test it at any time. After the probe is pulled out, the rubber will quickly fill the gap.
Cable connector purchase points
1, look at the "CCC" certification mark. Cable joint products are national compulsory safety certification products. All manufacturers must obtain the “CCC†certification from the China Electrotechnical Product Certification Committee, and have the “CCC†certification mark on the certificate or product.
2, see the inspection report. As a product that affects personal and property safety, cable joints have been listed as the focus of government supervision and inspection. Regular manufacturers accept inspections by the supervisory departments on a periodic basis. Therefore, the seller should be able to provide the inspection report of the quality inspection department, otherwise, the quality of the wire and cable products is lack of evidence.
3, see the packaging. All the regular enterprises that produce products that meet the national standards are very careful about the product packaging. Pay attention to the exquisite packaging, the printing should be clear, the model specifications, the name of the factory, and the complete site.
4, look outside. Product appearance smooth and round, uniform color. The wire and cable enterprises whose products meet the requirements of the national standards shall strictly control the purchase of raw materials, production equipment, and production techniques in order to improve product quality and ensure that the products meet the requirements of the national standards. Therefore, the appearance of wire and cable products produced meets the requirements of the standard, smooth and round, uniform color. The appearance of fake and shoddy products is rough and dull. For the rubber-insulated flexible cable, the appearance is required to be round and the sheath, insulation, and conductor are not easily peeled off. The appearance of counterfeit and shoddy products is rough, the ellipticity is large, and the insulation strength of the sheath is low, and it can be torn by hand.
5, see the conductor. The conductor is shiny, and the DC resistance and conductor structure dimensions meet the requirements of national standards. The wire and cable products that meet the requirements of national standards, whether aluminum conductors or copper conductors, are all brighter and free from oil pollution. Therefore, the DC resistance of conductors is in full compliance with national standards, with good electrical conductivity and high safety.
6, the amount of wire and cable length. The length is the main intuitive method of distinguishing between compliance with national standards and counterfeit and shoddy products. Do not try to buy cheap, cheap, buy the actual number of meters below its nominal number of wire and cable. The length must match the nominal meter number. The national regulations allow an error of ±0.5 meters per 100 meters.
7, to buy wire and cable joints to try: You can take a wire head repeated bending by hand, all feel soft, good strength, good sense of insulation material, no cracks on the surface are mostly superior products.
Editor's summary: The use of cable joints and cable connector purchase points are introduced here, I hope to be helpful to everyone. If you want to know more about yourself, you can follow the information on this site.
Cables, wires, cables, cables, brand cable connectors
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