Multi-conductor twisted insulating sheath cable

The invention discloses a multi-conductor twisted insulating sheath cable, and the cable consists of aluminium alloy conductors, a silicone rubber insulating layer, a polyester fiber layer, a chloroprene rubber sheath layer, and a low-smoke halogen-free polyolefin sheath layer. The cable has seven groups of conductor cores, and each group of conductor cores is formed by the twisting of 19 aluminium alloy conductors. The exterior of the seven groups of conductor cores is wrapped by the silicone rubber insulating layer, and the exterior of the silicone rubber insulating layer is wrapped by the polyester fiber layer. The exterior of the polyester fiber layer is rapped by the chloroprene rubber sheath layer, and the exterior of the chloroprene rubber sheath layer is wrapped by the low-smoke halogen-free polyolefin sheath layer. The cable is good in insulating property, is great in resistance to tear and tension, is high in performance of resisting acid and alkali corrosion, achieves low-smoke halogen-free flame-retardant performances, and has no poison gas during burning.