US 11,942,292 B2
Contact point monitoring module device for vacuum circuit breaker and vacuum circuit breaker comprising same
E-Jae Choi, Anyang-si (KR)
Assigned to LS ELECTRIC CO., LTD., Anyang-si (KR)
Appl. No. 17/602,158
Filed by LS ELECTRIC CO., LTD., Anyang-si (KR)
PCT Filed Mar. 9, 2020, PCT No. PCT/KR2020/003287
§ 371(c)(1), (2) Date Oct. 7, 2021,
PCT Pub. No. WO2020/209507, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 10-2019-0040647 (KR), filed on Apr. 8, 2019.
Prior Publication US 2022/0199341 A1, Jun. 23, 2022
Int. Cl. H01H 33/664 (2006.01); G01R 31/327 (2006.01); H01H 33/666 (2006.01)
CPC H01H 33/6642 (2013.01) [G01R 31/3274 (2013.01); H01H 33/666 (2013.01); H01H 2033/6667 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A contact monitoring module for a vacuum circuit breaker, capable of monitoring a wear amount of a contact inside a vacuum interrupter, wherein the vacuum circuit breaker includes a push rod assembly coupled to a movable electrode of a vacuum interrupter to raise up or lower down the movable electrode to bring the movable electrode into a contact closed or inserted state or a contact open or withdrawn state, the contact monitoring module comprising:
a linear sensor coupled to a bottom of the push rod assembly to detect a displacement according to a moving direction of a push rod; and
a sensor holder installed adjacent to the bottom of the push rod assembly, wherein the sensor holder is coupled to the linear sensor to process a signal transmitted from the linear sensor,
wherein the linear sensor is coupled to a bottom of a main lever transmitting a driving force generated from a mechanism assembly to the push rod assembly.