Flame and fire retardant control cable

Abstract

The utility model relates to cable technical field, the utility model provides a kind of fire -retardant fire -resistant control cable, including outer protective layer, waterproof layer, rock wool layer, flame -retardant layer, insulating layer, inner protective layer and electric core;The electric core is equipped with three groups, the outside of each group electric core is fixedly connected with aluminium foil layer, three groups electric core are wrapped in inner protective layer, and the inner protective layer is filled with expanded graphite powder;The waterproof layer is ethylene propylene diene rubber material, the outer wall of waterproof layer is equipped with lug, the lug is uniformly fixedly connected in the outer wall of waterproof layer, by setting support block and expanded graphite powder in the inside of inner protective layer, it is favorable to improve the pressure resistance of cable, reduce the cable deformation or damage caused by external pressure and occur, it is favorable to prolong the service life of cable, by setting the flame -retardant layer made of polyethylene and polypropylene mixture, make the equipment have good heat preservation effect, it is favorable to reduce the possibility of electric core cracking, fracture.

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