A special contact for high voltage circuit breaker test

Abstract

The invention relates to a test-dedicated contact of a high-voltage breaker. The test-dedicated contact of the high-voltage breaker is mainly composed of a cylindrical body. At least two insertion holes dedicated for overhauling test wires are formed in a side wall of one end of the cylindrical body. An annular-groove-shaped wire clamping groove dedicated for a bare copper wire is formed in an end portion, adjacent to the cylindrical body, below the insertion holes. A wire clamping leaf spring of a short-circuit bare copper wire is arranged at the bottom of the cylindrical body of the wire clamping groove. A hole which axially faces inwards from the end portion is formed in the other end of the cylindrical body. The two insertion holes formed in the cylindrical body are round insertion holes which are axially and sequentially arranged and penetrate through an axis center in a radial mode. The cylindrical body is made of copper materials. The surface of the cylindrical body is plated with a silver layer. The diameter of the cylindrical body is no larger than the outer diameter of a moving contact. The test-dedicated contact of the high-voltage breaker has the advantages of being simple in structure, small in size, convenient and fast to use, capable of being well applied to the testing field of high-voltage breakers of the electric system and the like.

Description

technical field [0001] The invention relates to a high-voltage circuit breaker test special contact, which belongs to the field of electric equipment tools. Background technique [0002] In power system substation installation, maintenance, pre-test, etc., it is necessary to detect the relevant parameters of the trolley-type high-voltage circuit breaker to realize accurate judgment on the working status of the high-voltage circuit breaker. At present, in the test process of high-voltage circuit breaker loop resistance test, insulation withstand voltage test, etc., when high voltage and high current are applied to the equipment, the test line is usually clamped directly and the short wire is wound between the dynamic and static contacts of the circuit breaker. Achieved. Due to the troublesome operation of wiring methods such as winding and clipping, it is also prone to omission of test lines and short wiring. In addition, the test line and the static contact belong to the po...

AI Technical Summary

Problems solved by technology

Due to the troublesome operation of wiring methods such as winding and clamping, it is also prone to omission of test lines and short wiring. In addition, the test line and the static contact are point contact methods, and the resistance is large. During the process of increasing the current It is easy to burn out the contacts and cause damage to the equipment, and this connection method makes the detection status of the equipment different from the actual operating status. The test data cannot truly and accurately reflect the operating status of the equipment. The possibility of misjudgment of the true state of the equipment has hidden dangers to the safe and stable operation of the power grid. Therefore, a new detection method is urgently needed to solve the above-mentioned problems

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