Special device for transformer bushing tap test

Abstract

The invention discloses a special device for a transformer bushing tap test. The special device comprises a lower base. Upper bases are fixed to the two corresponding sides of the top of the lower base through supporting assemblies. A first internal threaded hole is formed in the center of the top of each upper base; a metal base is screwed and fixed in the first internal threaded hole; a throughround hole is formed in the center of the bottom of the lower base; a testing assembly is installed on one side of the bottom of the lower base; and the supporting assembly comprises through holes, afirst supporting spring, sliding rods and a top plate, wherein the through holes are symmetrically formed in the two sides of the top of the upper base, and the sliding rods are connected into the through holes in a sliding mode. The device is novel in structure and ingenious in conception, the metal base can be easily screwed on the threads of the end screen flange base due to no reaction force,the threads of the end screen flange base cannot be abraded, the grounding lantern ring can be ejected open by pressing the base, the test lamp is turned on after the test is finished and recovered, so that good grounding is visually displayed, and the device is convenient to use.

Description

technical field [0001] The invention relates to the technical field of transformer testing, in particular to a special device for testing the end screen of a transformer bushing. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. The main components are primary coil, secondary coil and iron core (magnetic core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. According to the use, it can be divided into: power transformers and special transformers (electric furnace transformers, rectifier transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers , reactors, transformers, etc.). [0003] During the high-...

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Problems solved by technology

[0003] During the high-voltage test, when measuring the body dielectric loss and insulation test of the transformer bushing, it is necessary to suspend the grounding end of the end screen of the bushing. Now there is no good way to suspend the grounding end of the end screen, and after restoring the grounding end, whether the grounding is good It is difficult to find, and the end screen of the bushing that is not well grounded will affect the safe operation of the transformer, and in serious cases, it will be worse than blowing up the entire transformer, affecting the safe operation of the entire power grid

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