Class I Polyvinyl Chloride (PVC)

PVC plastic is cheap, with good mechanical properties, simple extrusion process, light weight, good oil and corrosion resistance. At the same time, the performance parameters of vinyl chloride (PVC) are generally used to manufacture low-voltage wires and cables of 1KV and below. Polyvinyl chloride (PVC) insulation added with voltage stabilizer is allowed to produce 6KV cables.

Polyvinyl chloride (PVC) has certain fuel resistance, but it will release toxic smoke when burning. It is not suitable for occasions where low smoke and low toxicity requirements need to be met when burning. At the same time, polyvinyl chloride (PVC) cables are not suitable for use in soil containing benzene and aniline, ketones, pyridine, methanol, ethanol, acetaldehyde chemical agents, or in environments containing trichloroethylene, chloroform, carbon tetrachloride, carbon disulfide, and glacial acetic acid.

Class II: Cross linked polyethylene (XLPE)

Cross linked polyethylene (XLPE) has excellent electrical insulation performance. After cross-linking, it becomes a thermosetting material with good mechanical properties and heat resistance. It has become the leading variety of medium and high voltage power cables. Cross linked polyethylene (XLPE) also has simple structure, convenient manufacturing, light weight, convenient laying, corrosion resistance, and simple terminal and intermediate joints. Cross linked polyethylene (XLPE) does not contain halogen and is not flame retardant. It will not produce a lot of toxic gas and smoke when burning. If flame retardant is added, the mechanical and electrical properties will be reduced. Cross linked polyethylene (XLPE) is sensitive to ultraviolet radiation.

Class III fluoroplastics

The outstanding characteristics of fluoroplastics are excellent electrical insulation performance, suitable for high-frequency signal transmission, high temperature resistance, improved current carrying capacity, good flame retardancy, high oxygen index, small flame diffusion range during combustion, less smoke generated, excellent weather aging resistance and mechanical strength, and are not affected by various acids, alkalis and organic solvents. But its ratio is large and the price is expensive. Fluoroplastics are mainly used in high-temperature resistant occasions.

Class IV rubber material

The rubber insulation material adopts natural rubber flange. The voltage grade is mainly 1KV. It can produce 6KV. It has good bending performance and can be laid in cold weather. It is especially suitable for mobile electrical equipment and other circuits that often need to be bent or have high flexibility requirements, and for occasions with large horizontal height difference and vertical laying. It will be damaged quickly when encountering oil and its compounds. Oil resistant rubber sheathed cables should be used in places that may often be soaked in oil.

Class V ethylene propylene rubber insulation

The long-term allowable working temperature of ethylene propylene rubber material is 90 ° C, and the allowable temperature of short-circuit thermal stability is 250 ° C. The temperature range is wide, and it is cold resistant, high temperature resistant, highly adaptable to the environment, weather resistant, light resistant, oxygen resistant, ozone resistant, and moisture resistant. It has been widely used in Europe and America.