What is the difference between flame retardant and fire resistant cables?

I. What is the difference between flame retardant cables and fire-resistant cables?1, the principle of the difference between the principle of fire-resistant cables and flame retardant cables are different. Halogen-containing cable flame retardant principle is based on the halogen flame retardant effect, while the halogen-free cable flame retardant principle is to rely on the precipitation of water to reduce the temperature to extinguish the fire. Fire-resistant cables rely on the fire-resistant layer of mica materials in the fire-resistant and heat-resistant properties to ensure that the cable can work properly even in a fire. 2., the structure and material of the difference between the fire-resistant cable structure and material is different from the fire-retardant cable. The basic structure of fire-retardant cables is: (1) the insulation layer is made of fire-retardant materials; (2) the sheath and jacket are made of fire-retardant materials; (3) the wrapping and filling are made of fire-retardant materials. Fire-resistant cables usually add a fire-resistant layer between the conductor and the insulation layer. Theoretically, a fire-resistant layer can be added to the structure of the fire-retardant cable, forming both fire-retardant and fire-resistant cables, but in practice there is no need for this. As the fire-resistant cable fire-resistant layer is usually used multi-layer mica tape wrapped directly around the wire, it can withstand a long period of combustion, even if the polymer at the imposed flame is burned, but also able to ensure that the line operates normally.3, the advantages and disadvantages of flame-retardant cables are characterized by a delay in the propagation of flames along the cable to avoid the spread of the fire, due to its low cost, it is a large number of fire-retardant cable cable varieties used in the cable. Single cable or bunched laying conditions, the cable burning can control the spread of flame within a certain range, thus avoiding the fire and the major disasters caused by prolonged combustion, thereby increasing the level of fire protection of cable lines. Fire-resistant cable in the case of flame combustion can maintain a certain amount of normal operation time, fire-resistant cable in the combustion of acidic gases and smoke produced by less, greatly improving its fire-resistant and fire-retardant properties, especially in the combustion, accompanied by spraying water and mechanical strikes, you can still keep the line running intact.

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