How to simply understand flame retardant cables?

I. How to briefly understand the flame retardant cable? Flame retardant cable refers to the specified test conditions, the sample burning, flame spread only within a limited range, residual flame or combustion can be extinguished within a limited time of the cable. Flame retardant cables are widely used in large buildings, tunnels, petrochemical industry, power stations, mines and other places with high fire protection requirements. When a fire occurs, it can prevent the fire from spreading on the cable, avoiding the expansion of the fire accident and reducing losses. The long-term allowable working temperature of flame retardant cables is the same as that of ordinary products of the models in the corresponding standards, and a comprehensive and correct understanding of flame retardant fire-resistant cables is the first condition for correct selection. In the case of fire, the fundamental characteristics may be burned, but can not work, but can prevent the spread of fire. Generally speaking, if the cable is on fire, the combustion can be limited to a localized area without spreading, retaining other equipment to avoid greater losses, the structural characteristics of flame-retardant cables are basically the same as ordinary cables. The difference is that its insulation, sheath, outer protective layer and auxiliary materials (packaging and filling) are flame retardant materials.

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