NH-RVS is the full name of refractory polyvinyl stranded flexible wire and cable, commonly known as twisted pair, twist wire, fancy wire, multi-strand flexible wire, flexible wire for twisted connection, etc., and the outside of the wire also increases the insulation layer and protective layer, is a movable cable.

What are the working characteristics of NH-RVS wires

The rated voltage is 300/300V and the execution standard is JB/T 8734.3-2012. Common product colors: red, yellow, blue, green, black, two-color, etc. Working temperature: the long-term normal working temperature of the conductor shall not exceed 70℃, and the laying temperature of the wire shall not be lower than 0℃.

Scope of application: Ordinary insulated wires, household wires (such as: access cables, lighting cables, air conditioning cables, etc.) Allowable bending radius: The allowable bending radius of cables with an outer diameter (D) less than 25mm should not be less than 4D, and the allowable bending radius of cables with an outer diameter (D) of 25mm and above should not be less than 6D.

NH-RVS wire features

It has good insulation, certain acid and alkali resistance, oil resistance and moisture resistance. The use of PVC materials, hardness, wear resistance and impact resistance are improved.

NH-RVS wires are commonly used

Because the NH-RVS wire has the characteristics of fire resistance, it is very suitable for some high-rise buildings, including large power stations, the fire safety level that needs to be achieved is a safe cable, which is divided into ab two types according to national standards. Grade a fire resistance temperature 900℃~1000℃, fire resistance time up to 90 minutes. Grade b adaptation temperature is 75℃0~800℃, fire resistance time is 90 minutes.

Common copper core PVC insulated twisted-pair flexible wire; zr-rvs: copper core polyvinyl chloride insulated flame retardant twisted pair flexible wire. wdzn-rvs: Copper core polyvinyl chloride insulated low smoke halogen-free flame retardant type twisted pair flexible wire.


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