It is easy for ordinary people to confuse the concepts of flame retardant cables and fire-resistant cables. A comprehensive and correct understanding of flame retardant and fire resistant cables is the first condition for the correct selection of them. So do you know the differences between flame retardant cables and fire resistant cables?
As a cables supplier, I will share it with you.
Although flame retardant cables have many advantages that are more suitable for chemical companies, such as low halogen, low-smoke and flame retardant. In general, flame retardant cables can replace flame retardant cables, but flame retardant cables cannot replace flame-retardant cables. Fire resistant cables and fire resistant cables have the following differences.
The principle of fire resistant cables is different from that of flame retardant cables. The flame retardant principle of halogen-containing cable is based on the flame retardant effect of halogen, and the flame retardant principle of halogen-free cable is to reduce the temperature of the water to extinguish the fire. Fire resistant cables rely on the fire resistant and heat-resistant characteristics of the mica material in the fire resistant layer to ensure that the cable works normally even in a fire.
The structure and materials of fire resistant cables are different from those of flame-retardant cables. The basic structure of flame retardant cables is:
(1) The insulating layer is made of flame retardant materials.
(2) The sheath and outer sheath are made of flame retardant materials.
(3) The wrapping tape and filling are made of flame retardant materials.
Fire-resistant cables usually add a fire resistant layer between the conductor and the insulating layer, so theoretically, a fire resistant layer can be added to the structure of the flame retardant cable to form a flame retardant and fire resistant cable. Because of the fire resistant layer of the fire resistant cable, a multi-layer mica tape is usually used to wrap the wire directly. It can withstand long-term combustion, even if the polymer at the place where the flame is applied is burned, it can ensure the normal operation of the line.
The characteristic of flame retardant cable is to delay the spread of flame along the cable so that the fire will not expand. Because of its low cost, it is a large number of cable varieties used in fire resistant cables. Regardless of whether it is a single cable or a bundle laying, the flame spread can be controlled within a certain range when the cable is burned, so it can avoid major disasters caused by fire and prolonged combustion and improve the fire protection level of the cable line.
Fire Resistant Cable
The fire-resistant cable can maintain normal operation for a certain period of time under the condition of flame burning, and can maintain the integrity of the line. When the fire resistant cable burns, the amount of acid gas smoke produced is small, and the fire resistant and flame retardant performance is greatly improved. Especially in the case of burning, accompanied by water spray and mechanical blow, the cable can still maintain the complete operation of the line.
Zhuhai Electric Wire And Cable Co., Ltd. is a professional manufacturer with 25 years experience in electrical wires and cables.
If you want to learn more about our products, please contact us.
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