Conductive contact surface performance online diagnosing and repairing system and using method thereof

Abstract

The invention discloses a conductive contact surface performance online diagnosing and repairing system and a using method thereof. The system comprises an impedance detecting part and an electric grinding part, wherein the impedance detecting part and the electric grinding part are connected in parallel to a relay contact to be detected, connecting ends are respectively connected with an external circuit through an isolation switch, and two ends of the impedance detecting part are respectively connected with a relay coil to be detected so as to control the relay contact to be closed and detect the relay coil to be electrified. Compared with the prior art, the invention has the advantages of realizing the online detecting and the online grinding of a conductive contact surface, eliminating overhaul and decomposition maintenance of equipment parts, greatly increasing repairing efficiency and reliability, reducing coefficient of losses and cost expenses, and being simple and compact in integral structure and convenient and easy to operate.

Description

technical field [0001] The invention relates to an on-line diagnosis and repair system and a use method thereof, belonging to the technical field of electrical automation, in particular to an online diagnosis and repair system for the conductive contact surface performance of electrical switches, relays and other contacts and electrical joints and a use method thereof. Background technique [0002] In the field of electrical automation, various switching components are widely used, which has an important impact on the reliability of many key circuits that operate continuously online. At present, preventive maintenance measures such as regular inspection and maintenance are mainly adopted for this type of critical circuit, but the effect is not significant, and frequent downtime and dismantling for a long time are required, which reduces the availability of equipment. [0003] In the process of use, the failure or performance degradation of the contact surface of the switch e...

AI Technical Summary

Problems solved by technology

In the existing technology, the traditional repair method is to disassemble the switch element and disassemble it, take out the pin of the contact or connector, and manually grind the conductive contact surface, but for some fully sealed switchgear, it can only be scrapped replace

This traditional grinding method needs to disassemble and reassemble the switch elements, which is complicated and labor-intensive, and it is difficult to ensure that the fit clearance after reassembly can be restored to the original best state; on the other hand, grinding will also damage the contact copper surface There is additional wear and tear, and usually the contacts need to be scrapped after only one or two grinding repairs; at the same time, contact grinding has higher technical requirements for operators

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