Switchgear circuit breaker circuit resistance test clamp

Abstract

The invention discloses a testing clamp of a switch cabinet breaker loop resistor, and the testing clamp comprises a clamp body, the clamp body comprises a first clamp arm and a second clamp arm which are mutually hinged, ends of the first and second clamp arms are insulating gripping parts, the other ends of the first and second clamp arms are respectively provided with an arc clamping part, the front end of the clamping part is provided with a hook part, the clamp body is provided with a closing device to close the clamping parts at the front ends of the first and second clamp arms, the clamping parts of the first and second clamp arms are closed by the closing device to form an arc jaw which is used to grip plum contacts, and the hook part on the clamping part is inserted into the grids of the plum contacts and mutually fitted with them. The testing clamp has the advantages of simple structure and reliable connection.

Description

technical field [0001] The invention mainly relates to the technical field of circuit breakers, in particular to a clamp for testing the loop resistance of a circuit breaker in a switch cabinet. Background technique [0002] 10kV and 35kV switch cabinets are important equipment for substations to supply power to users. The safe and stable operation of circuit breakers in switch cabinets plays a very important role in the safety and reliability of power supply. If the loop resistance of the circuit breaker is too large, it will cause the contact of the circuit breaker to overheat, and in severe cases, the switch cabinet will be burned. Therefore, it is very necessary to test the loop resistance of the circuit breaker. At present, when testing circuit breaker circuit resistance, it often occurs that the test clamp and the circuit breaker plum blossom contact cannot be tightly connected, resulting in abnormal test results. Therefore, the circuit resistance value of the circuit ...

AI Technical Summary

Problems solved by technology

If the loop resistance of the circuit breaker is too large, it will cause the contact of the circuit breaker to overheat, and in severe cases, the switch cabinet will be burned. Therefore, it is very necessary to test the loop resistance of the circuit breaker

At present, when testing circuit breaker circuit resistance, it often occurs that the test clamp and the circuit breaker plum blossom contact cannot be tightly connected, resulting in abnormal test results. Therefore, the circuit resistance value of the circuit breaker cannot be accurately reflected, resulting in erroneous measurement results. In addition, due to the abnormal results caused by the test clamps, repeated measurements of the circuit breaker circuit will increase the measurement time and workload, affect the progress of the on-site work and bring unnecessary losses to the on-site staff. Trouble

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