What is mineral insulated fireproof cable?

Copper core copper sheath magnesium oxide insulated cable, called MI cable abroad, domestic referred to as mineral insulated cable or fire cable. First by the Swiss research and development, France in 1934 took the lead in mastering the production technology of the product, Britain, the United States in 1936, respectively, began to develop in 1945, the Soviet Union in 1951 developed a three-core following the copper-core copper sheathed magnesium oxide-insulated fire protection cables, our country in 1962 began to develop the product for nuclear reactors. Now not only the fire prevention system, emergency lighting system, alarm system, automatic fire sprinkler system, evacuation system (security doors, elevators), high temperature occasions, military facilities and installations and explosion-proof places in the use of power lines, many ordinary occasions have also begun to use. Mineral insulated cable is the use of high conductivity of copper as a conductor, inorganic magnesium oxide as insulation, seamless copper tube for the sheath, made by a special process of modern building wiring cables and special industries (metallurgy, chemical industry, petroleum, etc.) with cable. Due to the special nature of its materials and structure, the product has the electrical properties, mechanical properties, environmental performance and environmental performance that cannot be compared with organic cables (plastic cables).

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