The difference between fire-resistant cable and flame retardant cable

　　The average person is very easy to confuse the concept of flame retardant cables and fireproof cables, although there are many more flame retardant cable applies to the advantages of chemical enterprise, such as low, low smoke, non-halogen, but in general, fire-resistant cable can replace flame retardant cable, and flame retardant cables can't take place of fire-resistant cable. What's the difference between the two? To understand the difference between fireproof cables and flame-retardant cables, it is important to know their respective USES and performances. Let me introduce you.
　　1. Fire-resistant cable
　　Main USES: mainly used in high-rise buildings, underground railways, nuclear power plant and the important industrial and mining enterprises related to fire security and its lifesaving, such as emergency power supply to the indoor fire equipment, fire alarm equipment, lights, ventilation and smoke exhaust equipment, power supply circuit of emergency elevator etc.
　　Use characteristics: fire - resistant cable (wire) is a cable that can still run normally at a certain time in a burning situation. The difference between him and the usual flame retardant wire and cable is that when a fire breaks out, it can still transmit electricity to help evacuate people and rescue important equipment.
　　2. Flame retardant cable
　　Main purpose: widely used in large buildings, tunnels, petrochemical industries, power stations, mines and so on. When a fire breaks out, it can prevent the fire from spreading on the cable, avoiding fire accidents and reducing losses.
　　Using feature: the cable (wire) allows for a long time working temperature is consistent with the corresponding standard models of common products fully correct understanding of the flame-retardant and fire-resistant cable is right to choose their first condition.
　　Although there are many more flame retardant cable applies to the advantages of chemical enterprise, such as low, low smoke, non-halogen, but in general, fire-resistant cable can replace flame retardant cable, and flame retardant cable can't replace fireproof cables, the usability of fire-resistant power cable. Fire-resistant power cable when use, however, there is a certain condition, so to understand these conditions, can reasonable use of fire-resistant power cable, on the other hand, should also be aware of the difference of the fire-resistant power cable with flame retardant cable. The difference between them is mainly:
　　1. Difference of principle
　　The principle of fireproof cable and flame retardant cable is different. The flame retardant principle of halogen cable is the flame retardant effect of halogen. The principle of non-halogen cable flame retardation is to extinguish the fire by lowering the temperature. Fire - resistant cable is the fire resistance and heat resistance of mica material in the refractory layer, ensuring that the cable is also working properly during the fire.
　　The difference between structure and material
　　The structure and materials of the fire-resistant cable are not the same as the flame retardant cable.
　　The basic structure of flame retardant cable is:
　　(1) flame retardant materials are used in the insulation layer;
　　(2) the protective sheath and outer sheath shall be made of flame retardant materials;
　　Flame retardant materials are used for packing and filling.
　　And fire-resistant cable is usually between conductor and insulation layer to add a refractory layer, so in theory, can add a refractory layer in the structure of the flame retardant cable, are formed as flame retardant and fireproof cables, but it is not the necessary.
　　Because of the refractory layer of the fire-resistant cable, the layers of mica tape are usually wrapped directly around the wires. It can be burned for a long time, even if the high polymer is burned down, it can ensure the normal operation of the line.