Flame retardant cable is, the specimen was burning under specified test conditions, test fire source is removed, the flame spread only within limits, the residual flame or residue burning within the time limit self-extinguishing cable. The fundamental characteristics are: in case of fire may be burned out and can not run, but can prevent the spread of fire. More simply, the wire in case of fire, to burning restrictions in the local area, does not produce the spread, keep a variety of other devices, to avoid greater losses.

Meaning: flame-retardant in the specified test conditions, the sample is burned in the fire source is removed, the spread of flame on the sample only a limited range of self-extinguishing characteristics, namely, to prevent or delay the occurrence or spread of flame capacity.

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Flame retardant cable

Wire and cable burning of flammable gases due to external heating to achieve the purpose of the flame retardant, must contain three elements cause a fire, namely: the combustible gas, heat and oxygen. Therefore, the commonly used flame retardant cable insulation, sheathing and fill material, add a halogen-containing halide and metal oxides, from the point of view of the flame retardant to evaluate, this is an excellent way, but because halide containing these materials, when burned, release a lot of smoke and halogenated hydrogen, therefore, the low visibility of fire, evacuation and fire a great hindrance to the safety of personnel, and people are more toxic gases died of suffocation.

In addition, halogenated hydrogen and air in the water after the reaction, that is generated hydrogen halide acid, severe corrosion of equipment, buildings, resulting in "secondary disasters".

Now, with the continuous improvement of the technological level, fire-retardant issues from the past of halogen flame retardant, has been further developed to a low-halogen, halogen-free flame retardant. Fire retardant flexible cables "in the development and production of communication power cable insulation jacket using a halogen, high decomposition temperature, good mechanical properties of halogen-free polymer materials, because the cable does not contain halide and metal oxides in the combustion does not produce harmful gases and smoke, does not exist will result in the possibility of "secondary disasters", and also has good mechanical properties and electrical performance to meet the requirements of the cable, and completely changed the inadequacies of the past, flame retardant cable.

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ZR-YJV22 copper core XLPE insulated PVC sheathed flame retardant power cable