Medium-voltage frequency-conversion environmental-friendly aluminum alloy cable

A medium-voltage frequency-conversion environmental-friendly aluminum alloy cable comprises three main cores and three neutral line cores. Each main core comprises a main core aluminum alloy conductor, and a conductor shielding layer, an insulating layer and an insulating and shielding layer which are arranged outside the main core aluminum alloy conductor in a three-layer co-extrusion dry-type cross-linked manner. The insulating and shielding layer is externally wrapped by a metal shielding layer. Each neutral line core comprises a neutral line aluminum alloy conductor and a neutral line insulating layer which is directly extruded outside the neutral line aluminum alloy conductor. The three main cores are symmetrically arranged in a triangle shape, and the three neutral line cores are embedded into the intervals among the three main cores and are symmetrically arranged in a triangle shape, so that a cabling product is formed. The cabling product is successively wrapped by a low-smoke halogen-free belt, a cop