Ⅰ. Introduce
RV is a wire and cable model, the full name is copper core PVC insulated flexible wire and cable. RV-K cable has a wide range of applications in the field of industrial power distribution, especially suitable for flexible installation places with strict requirements, such as electric control cabinets, distribution boxes and various low-voltage electrical equipment. It can be used for power, electrical control signals and switching signals. transmission.
RV-K cable adopts the design of soft structure, the conductor bending radius is small, and it is suitable for installation in wet and oily places. At the same time, the RV cable has obtained the certification of CCC and CE marks, and meets the requirements of HD (EU Harmonized Standard), which can be applied not only to the Chinese market, but also to the European market.
Ⅱ. What is PVC cable
RV-K cable belongs to PVC cable material, and PVC cable is composed of polyvinyl chloride resin, stabilizer, plasticizer, filler, lubricant, antioxidant, colorant, etc.
Polyvinyl chloride, abbreviated as PVC in English, is a polymer formed by the polymerization of vinyl chloride monomer in peroxides, azo compounds and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.
PVC insulated cable and wire products are divided into unsheathed cables for fixed wiring, sheathed cables for fixed wiring, light unsheathed flexible cables for general purpose sheathed flexible cables, installation wires and shielded wires, special-purpose sheathed flexible cables Cables, PVC insulated flame retardant/fire resistant cables and other products.
PVC has many good protective properties that can well protect the inside of wires and cables, such as PVC is not easy to burn, aging resistance, chemical corrosion resistance, impact resistance, simple structure, tensile, wear-resistant, waterproof, oil-resistant, flame-retardant, tensile-resistant High strength, tear resistance and other properties make it have a good insulating effect and protection, so the general wire and cable insulation materials are mostly PVC materials.
In general, the technological transformation and development of PVC materials has played a great role in the cable and wire industry. PVC cable material formula Cable material belongs to the varieties with higher performance requirements in the PVC formula, especially electrical insulation, low temperature resistance and aging resistance have certain requirements. These special requirements must be considered when formulating.
Ⅲ. What is the difference between a wire RV and a cable RVV
What is the difference between indoor decoration wire RV and cable RVV? Both belong to the general insulated cable with simple structure, with excellent conductivity and acid and alkali resistance, and the application can be trusted. So, what’s the difference between the two?
①The naming method is different
CE RV-K cable is generally mainly used for single-core soft electrical conductor without sheath cable, RVV polyethylene insulation layer polyethylene sheath cable and wire.
②The structure of the electrical conductor is different
The RV wire is a single-core copper wire; and the RVV is a multi-core copper wire, which is composed of two or more RV wires. The order of the copper core cable is not particularly specified.
③The structure of the grommet is different
There is no protective sheath on the outside of the RV cable; while there is a layer of PVC sheath on the outside of the RVV cable. effect.
④The rated voltage is different
RV lines are rated at 450V/750V, while RVV lines are rated at 300V/500V.
⑤The main purpose is different
RV-K cable is suitable for flexible installation sites with strict regulations, such as electrical cabinets, power distribution cabinets and various low-voltage electrical machinery and equipment. It can be used for power engineering, electrical control system data signals and power switch data signals transmission. And it is suitable for the installation site that is wet, cold and oily.
RVV line is suitable for operating data signal coaxial cable, electrical equipment, instrument panel, automatic machinery, high-rise residential building intercom system system software, household lighting wiring, etc.
Ⅳ. How to choose RV-K cable
RV-K cables can be used in dry and humid indoor environments. It is especially suitable for tool processing, machinery industry, and measurement and control parts of electronics and computers. Can be applied to moderate mechanical stress and can move freely without tensile stress. The purchase of RV-K cable must be careful.
1.Look at the material of RV-K cable
Usually, some bad wire manufacturers either choose inferior materials or cut corners in order to save some material costs. If it takes some professional knowledge to distinguish the quality of the material, then we can analyze the quality of the insulation layer of the wire from the aspects of the surface thickness, uniformity and flaws of the insulation layer of the wire.
2.Look at the length and wire diameter
The length and wire diameter of the national standard wire are specified.
3.Look at the quality of copper
Most wires are made of copper. If the copper is high quality, it will look reddish purple instead of yellow; in addition, high-quality copper is relatively soft.
4.Look at good quality wires
Good quality wires are generally within the specified weight range. In terms of price, due to the low production cost of counterfeit and shoddy wires, vendors often sell at low prices under the guise of cheap and high-quality products, which makes people fooled.
5.Preferred regular manufacturers
Choose products from regular manufacturers and merchants. The wire packaged in a coil should have a certificate of conformity, and the wire body should be printed with the factory name or trademark, voltage, 3C logo, etc.
كابل Anyte, as a wire and cable manufacturer, is a UL/TUV/CSA/SAA/ISO9000.1 certified company. All materials are RoHS 2.0. During production, inspectors conduct route inspection at every step and conduct 100% testing before delivery. It is a regular manufacturer that you can buy with confidence. If necessary, you can make relevant consultations!
