公开(公告)号：US11810709B2

公开(公告)日：2023-11-07

申请号：US17414002

申请日：2019-09-18

Applicant: LS ELECTRIC CO., LTD.

Inventor： Han-Baek Chung

IPC: H01F38/30 ,  G01R15/18 ,  H01F27/42 ,  H02H1/00

CPC classification number: H01F38/30 ,  G01R15/185 ,  H01F27/427 ,  H02H1/0007

Abstract: A current transformer according to the present invention may comprise a magnetic core, a secondary coil, and a magnetic flux compensation member. A main circuit of an air circuit breaker penetrates the magnetic core. In addition, the secondary coil is arranged to be adjacent to the magnetic core, and a secondary current is induced through a current flowing in the main circuit. In addition, the secondary coil supplies the induced secondary current to a relay. The magnetic flux compensation member may be coupled to the magnetic core so as to correct magnetic flux of the secondary coil.

公开(公告)号：US12080502B2

公开(公告)日：2024-09-03

申请号：US17916710

申请日：2021-03-29

Applicant: LS ELECTRIC CO., LTD.

Inventor： Sang-Chul Lee ,  Young Kim ,  Han-Baek Chung

IPC: H02B11/127 ,  H01H9/16 ,  H01H71/04 ,  H01H71/52

CPC classification number: H01H71/04 ,  H01H9/161 ,  H01H71/522 ,  H01H2071/046

Abstract: The present disclosure provides an entrance and exit position detection device for a power device. The entrance and exit position detection device for a power device comprises: a cradle which is open on one side and has an arrangement space formed therein; a power device body which may be in the arrangement space and has a guide plate formed on one side portion thereof; and a position detection part which linearly detects the displaced position of the power device body while the cradle enters and exits the arrangement space. Also, the present disclosure provides an entrance and exit monitoring system which has the above-described entrance and exit position detection device for the power device.