To see the flame retardant cables and fireproof cables little knowledge

Usually people is easy to confuse the definition of flame retardant cables and fireproof cables, today small make up to everyone to make a detailed introduction, looking forward to your help. Despite a lot of flame retardant cable for the advantage of chemical plants, such as low halogen, low smoke, flame retardancy, etc. , but in normal conditions, fire-resistant cable can replace flame retardant cable, and the flame retardant cable can not instead of fire-resistant cable. Flame retardant cable, is refers to under the standards of experimental requirements, the specimen was lit, after remove the fire, the flames spread only within limits, or the flames burning residue mechanical energy independent blows out of the cable in limit time. Essential features are: outside the fire accident condition will be destroyed and can not work, but can stop the spread of the air. M - popularization, wire Fire, can put the light is limited in the range of part, cause no diffusion, save other various machinery and equipment, to prevent the cause more damage. Fireproof cables, it is to point to in a flame lit condition can maintain must time safety operation of the cable, fire-resistant cable used in multi-storey buildings, subway, underground street, large and medium-sized power plants and industrial enterprises of key areas related to fire safety and fire safety rescue. A, the difference of basic principle of fire-resistant cable is different from the basic principle of flame retardant cable. Containing halogen flame retardant cable basic principle is to rely on the halogen flame retardant, halogen-free flame retardant cable basic principle is to blow the baked by Xin water reducing temperature. Fire-resistant cable is to rely on the fireproof material layer biotite of fireproof material, high temperature resistant characteristics of raw materials, to ensure that the cable fire accident based on normal work. Second, the structure and the difference of raw materials of fire-resistant cable structure and raw material with flame retardant cable are not the same. Flame retardant cable structure is the basis of: cable sheath choose fireproofing materials; Convenient set and outer sheath choose fireproofing materials. Package and choose fireproofing material filling. And fire-resistant cable is usually in the middle of the electric conductor and the cable sheath and a fireproof material layer, therefore from the foundation in theory to be able to add in the structure of the flame retardant cable fireproof material layer, creates a flame retardant and fire prevention materials cable, but not a must. As a result of the fire-resistant cable fireproof material layer, generally choose double mica tape around the package immediately to the transmission line. It can long-term lit, even if release the flame in the polymer is damaged, can also be sure to route all normal operation.