As one of the most closely related equipment to customers

switchgear occurs an operation failure

which will directly trigger power outage for customers.Combined with the routine maintenance in power outage state

the loop resistance test is conducive to detect hidden troubles of primary equipment in switchgear as soon as possible.Taking KYN28-12 switchgear as an example

it analyzes the internal structure of switchgear and sorts out six key parts that may be involved in the abnormal loop resistance of switchgear.Combined with the problems found in the process of equipment operation and maintenance

it analyzes the common causes of abnormal loop resistance.It puts forward the corresponding preventive measures from three aspects: improvement of processing design

upgrade of installation procedure and strengthening of operation-maintenance management

which contributes to improve the operation reliability of switchgear.