Voltage-withstanding testing jig of vertical transformer

Abstract

The invention discloses a voltage-withstanding testing jig of a vertical transformer, wherein the voltage-withstanding testing jig comprises a fixture body and is characterized in that the fixture body comprises a sample bracket for simultaneously putting a plurality of transformers to be tested; a plurality of grooves the same as the transformers to be tested in width are arranged on the sample bracket; a first contact device and a second contact device for being contacted with detection points of the transformers to be tested are arranged on the fixture body and respectively and symmetrically arranged at two sides of the sample bracket; a plurality of sets of thimbles for being simultaneously contacted with the detection points of the transformers are arranged on the first contact device and the second contact device; and the other ends of the thimbles are respectively connected with a detection apparatus through a power line. The voltage-withstanding testing jig of the vertical transformer provided by the invention has the advantages of being simple in structure and convenient for use and is capable of simultaneously testing a plurality of transformers; simultaneously, a plurality of indexes can be tested; and the testing efficiency is increased.

Description

technical field [0001] The invention relates to a vertical transformer withstand voltage test fixture. Background technique [0002] A transformer is a device that transforms AC voltage, alternating current, and impedance. When an AC current passes through the primary coil, an AC magnetic flux is generated in the iron core (or magnetic core), which induces a voltage (or current) in the secondary coil. . The transformer consists of an iron core (or magnetic core) and a coil. The coil has two or more windings. The winding connected to the power supply is called the primary coil, and the remaining windings are called the secondary coil. [0003] The transformer withstand voltage test (externally applied high voltage test) is mainly to check whether the main insulation of the transformer is qualified, that is, the insulation condition between the primary coil and the secondary coil, between them and the iron core and the shell. If it is unqualified, it will not only endanger t...

AI Technical Summary

Problems solved by technology

[0005] Existing voltage withstand test fixtures for transformers generally only have two test contact pens, and each transformer needs to be tested three times. The withstand voltage test between the coil and the iron core is cumbersome to operate and the test efficiency is low

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