A special device for transformer bushing end screen test

Abstract

The invention discloses a special device for testing the end screen of a transformer bushing, which includes a lower base, an upper base is fixed on the corresponding two sides of the top of the lower base through a supporting component, and a first internal thread is opened at the center of the top of the upper base hole, the metal seat is screwed and fixed inside the first internal thread hole, a through hole is opened at the bottom center of the lower base, a test component is installed on one side of the bottom of the lower base, and the support component It includes a through hole, a first supporting spring, a slide bar and a top plate. The through hole is symmetrically opened on both sides of the top of the upper base, and the inside of the through hole is slidably connected with a slide bar. The invention has a novel structure and ingenious conception. Since there is no reaction force, the metal seat can be easily screwed on the thread of the base of the flange of the last screen, and the thread of the base of the flange of the last screen will not be worn, and the bottom base can be pushed open and grounded. The collar, when the test is completed and restored, the test light is on, visually indicating that the grounding is good, and it is easy 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-...

AI Technical Summary

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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