Withstand voltage test wire telescopic insulating support and safe test method

The invention relates to a withstand voltage test wire telescopic insulating support which comprises a base, a fixed rod, a universal ball support seat, an insulating rod, a telescopic insulating rod and a wire hook. The fixed rod is fixedly installed on the upper end of the base. The universal ball support seat is rotationally installed on the upper end of the fixed rod. A hinged swing rod on the upper end of the universal ball support seat is connected with one end of the insulating rod, the other end of the insulating rod is provided with a lock net, the lock net is internally and coaxially sleeved by the telescopic insulating rod, and an extending end of the telescopic insulating rod is provided with the wire hook. The fixed telescopic insulating rod is adopted, the safety risks in a large-scale electric appliance test process can be completely changed, the method is simple and practical, the customary operation method is changed, the method is the first in the industry, the popularization value is high,