Upper structural member shielding case for high-voltage test of power transformer and reactor

Abstract

The invention relates to the technical field of shielding cases, and discloses an upper structural member shielding case for a high-voltage test of a power transformer and an electric reactor. The shielding case comprises a supporting bottom foot, two grounding parts are arranged on the supporting bottom foot, an annular hollow aluminum pipe is arranged above the supporting bottom foot, the bottom of the annular hollow aluminum pipe is fixedly connected with a first fixing rod, a second fixing rod and a third fixing rod, and the sides, close to each other, of the first fixing rod and the second fixing rod are fixedly connected with the same first connecting rod. The shielding case is simple in structure and convenient to operate, solves the problems of external insulation corona and breakdown hidden dangers of high-voltage tests of transformers and reactors, ensures the safety of lightning impulse tests, induction voltage withstanding tests and induction voltage withstanding tests with partial discharge capacity measurement of power transformers and shunt reactors of kV and above voltage classes, is safe and reliable in sampling, and ensures the correctness of a detection result, so that the sampling work is quick and convenient, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of shielding covers, in particular to a shielding cover for upper structural parts used for high-voltage tests of power transformers and reactors. Background technique [0002] A power transformer is a static electrical device that is used to change an AC voltage (current) of a certain value into another voltage (current) with the same frequency or several different values. Reactors are also called inductors. , when a conductor is energized, it will generate a magnetic field in a certain space it occupies, so all electric conductors that can carry current have inductance in the general sense. [0003] During the high-voltage test of power transformers and reactors, factors such as the tip of the external grounding part of the tested product and the ambient humidity will cause hidden dangers of external insulation breakdown in the high-voltage test, and it is unsafe to sample the test product and cannot preve...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a shielding cover for the upper structure used in high-voltage tests of power transformers and reactors, which solves the hidden dangers of corona and breakdown of the external insulation of transformers and reactors in high-voltage tests, and ensures kV and The safety of power transformers and shunt reactors with above voltage levels, lightning impulse test, induction withstand voltage, and induction withstand voltage test with partial discharge measurement is safe and reliable, ensuring the correctness of test results and making sampling work fast Convenience, improved work efficiency and other advantages, it solves the hidden danger of external insulation breakdown in the high-voltage test due to factors such as the tip of the external grounding part of the tested product and the ambient humidity during the high-voltage test of the power transformer and reactor. Moreover, it is not safe to sample the test product, and it cannot prevent the insulating oil from being affected by the external environment, which makes the test results inaccurate.

Images