Device for alternating-current voltage withstanding test of transformer with wires led out of cable warehouse

Abstract

The invention provides a device for an alternating-current voltage withstanding test of a transformer with wires led out of a cable warehouse. The device for the alternating-current voltage withstanding test of the transformer with the wires led out of the cable warehouse comprises an insulation support and an insulation rod. The insulation rod is arranged on the insulation support; electrodes are arranged at the two ends of the insulation rod, and are connected through an internally-arranged insulation test line. Because the insulation rod and the internally-arranged insulation line are adopted, the device for the alternating-current voltage withstanding test of the transformer with the wires led out of the cable warehouse effectively eliminates unsafe factors of original wiring, and accordingly the problem that because the distance between the insulation rod and a barrel wall test wire is not enough, the alternative-current voltage withstanding test of the transformer can not be carried out is effectively solved.

Description

technical field [0001] The invention relates to the field of electric device test devices, in particular to an AC voltage withstand test device for a cable warehouse outlet transformer. Background technique [0002] The AC withstand voltage test is required during the electrical handover test of the transformer, and the structure of the cable warehouse outlet transformer is different from that of the bushing outlet transformer. The bushing of the cable warehouse outlet transformer is installed in the cable warehouse and connected to the cable in oil. At present, the winding insulation test carried out during the handover test of the cable warehouse outgoing transformer includes insulation resistance, leakage current, and overall dielectric loss, but the AC withstand voltage test cannot be carried out. [0003] AC withstand voltage test wiring is as follows figure 1 As shown, the wiring method in the prior art is a soft connection, which is easy to swing; if the insulating r...

AI Technical Summary

Problems solved by technology

At present, the winding insulation test carried out during the handover test of the cable warehouse outgoing transformer includes insulation resistance, leakage current, overall dielectric loss, etc., and the AC withstand voltage test cannot be carried out.

[0003] AC withstand voltage test wiring is as follows figure 1 As shown, the wiring method in the prior art is a soft connection, which is easy to swing; if the insulating rod 2 of the fixed test line 1 is not fixed firmly, it is easy to cause a safety accident; the insulation distance between the high-voltage insulation test line 1 and the cylinder wall 3 D is too close to meet the safety requirements of the test voltage, and the AC withstand voltage test cannot be carried out

Images