Title:
CONTACT MONITORING DEVICE FOR VACUUM CIRCUIT BREAKER AND VACUUM CIRCUIT BREAKER COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/204377
Kind Code:
A1
Abstract:
The present invention relates to a contact monitoring device for a vacuum circuit breaker, which can compensate for errors of a contact monitoring device capable of monitoring a contact wear amount in a vacuum interrupter, and to a vacuum circuit breaker comprising same. According to the present invention, the contact monitoring device for a vacuum circuit breaker can determine an appropriate time for maintenance and repair by monitoring in real time a contact wear amount using a photosensor. Moreover, the contact monitoring device for a vacuum circuit breaker, by using two photosensors, minimizes position errors with respect to the photosensors or a push rod that may be present inherently in the sensors or occur due to an installation state, and thus, can detect the contact wear amount with precision.
Inventors:
CHOI WOO-YOUNG (KR)
LEE HYUN-WOOK (KR)
LEE HYUN-WOOK (KR)
Application Number:
PCT/KR2020/003286
Publication Date:
October 08, 2020
Filing Date:
March 09, 2020
Export Citation:
Assignee:
LS ELECTRIC CO LTD (KR)
International Classes:
H01H33/664; H01H33/668
Foreign References:
| JP2006310133A | 2006-11-09 | |||
| US7417554B2 | 2008-08-26 | |||
| CN101813750A | 2010-08-25 | |||
| US9378901B2 | 2016-06-28 | |||
| KR100907952B1 | 2009-07-16 |
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
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