公开(公告)号：US20220206070A1

公开(公告)日：2022-06-30

申请号：US17601535

申请日：2020-03-13

Applicant: LS ELECTRIC CO., LTD.

Inventor： Hyun-Wook LEE ,  Ju-Hyun KIM

IPC: G01R31/327 ,  H01H33/664 ,  G01N21/55

Abstract: The present disclosure relates to a contact point monitoring device for a vacuum circuit breaker, and a correction method performed through same, wherein deviations due to temperature in a sensor for monitoring the amount of wear at a contact point may be compensated for. According to the present disclosure, the amount of wear at the contact point may be accurately detected by correcting a characteristic value of a photosensor according to operation temperature, by taking into consideration the temperature characteristics of the photosensor.