Insulating bus with external sheath

The utility model relates to an insulating bus with an external sheath, belonging to the field of manufacturing of electric elements. The conductor of the insulating bus is externally wound with an insulating layer; furthermore, capacitance voltage-sharing screens are arranged in the insulating layers at two ends at intervals; the insulating layer is externally provided with a grounding electric screen and a protective layer; two ends of the conductor are connected with terminals; and a metal external sheath is arranged at the most external layer of the insulating bus. The insulating bus has the advantages of high safety, long service life, attractive appearance and the like.