Multi-core insulating electric cable

The utility model relates to a multi-core insulating electric cable comprising a plurality of copper wire conductors, a pair twist core which is formed by twisting a phosphatized steel wire and an alloy wire in a paired manner is arranged in each copper wire conductor, a cable core is formed by extruding a wrapping tape around each pair twist core, a halogen-free low smoke filling material is arranged in each cable core, and an armor layer and a protection sleeve are orderly arranged outside the cable cores. Compared with the prior art, the multi-core insulating electric cable of the utility model is simple in structure and low in manufacture cost, two insulating layers are extruded outside the conductors, insulating effects of the electric cable are greatly improved, and safe utilization is realized.