Three-core twisted-pair reinforcement cable applied to instrument

The utility model discloses a three-core twisted-pair reinforcement cable applied to an instrument. The cable comprises main wire cores, a flame retardant non-woven belt wrapping layer, an insulating layer, a nickel plated copper wire braided shielding layer and a sheath, wherein the flame retardant non-woven belt wrapping layer, the insulating layer, the nickel plated copper wire braided shielding layer and the sheath successively wrap the main wire cores. Each main wire core is composed of three twisted-pair insulating wire cores. The main wire cores are pairwise circumscribed and are closely arranged. A space between the flame retardant non-woven belt wrapping layer and the main wire cores are wrapped by a reinforcement part. The cross section of the reinforcement part is an equilateral triangle. A waterproof layer is arranged between the nickel plated copper wire braided shielding layer and the sheath. The cable can be widely used, has the advantages of good conductivity, water and moisture resistance, hi