One kind of mineral insulated cable fire temperature of 1300

One kind of mineral insulated cable fire temperature 1300 ℃, which consists of the core, the core insulating sleeve, the metal sleeve, minerals and oxygen barrier, framework support layer, an insulating layer, a halogen-free jacket layer; insulating said core wrapped sleeve on the core, the core is coated with an outer insulating jacket metal sleeve, an outer metal casing wrapped with an oxygen barrier minerals, mineral outer oxygen barrier layer wrapped with a skeleton support layer, the support layer outer wrap bobbin mineral oxygen barrier, an outer oxygen barrier wrapped with a mineral insulating layer, the outer layer is wrapped with a halogen-free insulating jacket layer. And cables made according to the composition formula of the invention has excellent fire resistance, fire-resistant temperature above 1300 ℃, refractory long time.