Circuit breaker mechanical characteristic test assisting instrument

Abstract

A circuit breaker mechanical characteristic test assisting instrument is disclosed and comprises a connecting line. The circuit breaker mechanical characteristic test assisting instrument is characterized by comprising an assisting instrument box body. A voltage selection change-over switch, a switch opening and closing selection change-over switch and fifteen wire connection terminal plug openings are arranged on the assisting instrument box body; the voltage selection change-over switch and the switch opening and closing selection change-over switch are respectively in electric connection with the fifteen wire connection terminal plug openings, and the wire connection terminal plug openings are connected with wire connection terminals of a switch terminal box via connecting lines. The circuit breaker mechanical characteristic test assisting instrument is advantaged by elimination of hidden safety trouble of electric shocks, prevention of damages on a gypsum board on a bottom part of the terminal box, improved working efficiency, lowered safety risks, reduced test personnel, and stable and reliable connection.

Description

technical field [0001] The invention relates to the technical field of a circuit breaker detection instrument, in particular to an auxiliary instrument for testing the mechanical characteristics of a circuit breaker. Background technique [0002] Circuit breakers are the most common electrical equipment in substations. Circuit breaker low-voltage operation tests and mechanical characteristic tests are routine test items for circuit breakers, which need to be tested regularly according to the test cycle. During the mechanical characteristic test of the circuit breaker, four mechanical characteristic tests of closing, opening, re-opening and closing are required for the circuit breaker, and three tests of closing, opening and re-opening are required for the low-voltage action test of the circuit breaker And these seven tests all need to change the wiring mode to connect the circuit breaker switch mechanical characteristic tester and the terminal of the circuit breaker, and the...

AI Technical Summary

Problems solved by technology

In this way, there are the following problems: first, there is a hidden danger of electric shock. During the test, the terminal is with a voltage of 220V. Or touching the conductive parts will cause personal electric shock accidents; second, it is easy to damage the gypsum board at the bottom of the switch terminal box. During the switch test, people need to stand inside the terminal box to fix the conductive pins, and the gypsum board at the bottom of the terminal box has no load-bearing capacity. , it is very easy to damage the bottom of the terminal box; third, changing the wiring is cumbersome. A switch test needs to change the wiring method at least 48 times. Frequent repetitive labor can easily cause fatigue and slack in the human brain. The equipment may be damaged or the personnel may be damaged. Fourth, personnel redundancy. During the switch test, one person is required to monitor, one person to operate, and two people to fix the pins. A total of 4 people are required, but the labor intensity is not high, and there is a large number of redundant personnel; Fifth, if the test goes well and the switch operates correctly, each switch needs to be opened and closed 4 times, and because the wiring is unstable, the switch often cannot operate correctly according to the instruction, and the correct action rate of the switch is low. On average, it needs to be opened and closed 6 times to complete the test. The number of opening and closing times in the entire life cycle of the circuit breaker is certain, so the service life of the switch is shortened

To sum up, the existing circuit breaker mechanical characteristics and low-voltage tests are unstable due to unstable wiring. The presence of conditions such as poor wiring

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