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公开(公告)号：US20230411096A1
公开(公告)日：2023-12-21
申请号：US18034632
申请日：2021-10-27
Applicant: LS ELECTRIC CO., LTD.
Inventor： Jung Woo YOO , Han Mi Ru KIM
Abstract: Disclosed are an arc path forming part and a direct current relay including the same. An arc path forming part according to an embodiment of the present disclosure comprises a plurality of magnet parts. Each magnet part is located on one side and the other side of the arc path forming part, respectively, to form a magnetic field inside an arc chamber. The arc generated inside the arc chamber is extended in a direction away from the center of the arc chamber by receiving electromagnetic force from the magnetic field. Thus, damage to each component located at the center can be prevented.
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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
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.
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公开(公告)号：US20230353041A1
公开(公告)日：2023-11-02
申请号：US18035474
申请日：2021-11-03
Applicant: LS ELECTRIC CO., LTD.
Inventor： Paul HAN
Abstract: A short circuit regulating device and a modular multi-level converter comprising the same are disclosed. The short circuit regulating device according to each embodiment of the present disclosure includes an energization block energizably connected to the capacitor assembly and a shorting block contacting or spaced apart from the energization block. Each face of the energization block and the shorting block facing each other is in contact with each other or separated from each other.
The shorting block is coupled to the support portion. A cam member is rotatably coupled to the support portion, and an elastic member elastically supports the energization block and the shorting block. Therefore, contact and separation between the energization block and the shorting block can be performed by rotation of the cam member.-
公开(公告)号：US11791081B2
公开(公告)日：2023-10-17
申请号：US17638587
申请日：2020-04-28
Applicant: LS ELECTRIC CO., LTD.
Inventor： Jongkug Seon , Woojin Jo , Jaehyeong Ko
CPC classification number: H01F7/1844 , H01F7/064 , H01H1/54 , H01H47/22 , H01F2007/1888
Abstract: The present disclosure provides a coil driving device comprising: an input voltage sensing unit for sensing an input voltage; a switch unit configured to make a switching operation to supply a driving current to a coil; a PWM circuit unit for outputting a pulse width modulation (PWM) signal for the switching operation of the switch unit; an impedance adjustment unit for varying an impedance value such that the PWM signal is adjusted, thereby limiting the driving current; and a control unit for causing the impedance adjustment unit to vary the impedance value on the basis of the input voltage, thereby adjusting at least one of the duty ratio of the PWM signal and the frequency thereof.
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公开(公告)号：US20230298841A1
公开(公告)日：2023-09-21
申请号：US18020553
申请日：2021-03-10
Applicant: LS ELECTRIC CO., LTD.
Inventor： Byoungchul KIM
IPC: H01H71/02 , H01H33/666 , H01H71/08
CPC classification number: H01H71/0264 , H01H71/0214 , H01H33/666 , H01H71/08
Abstract: The present disclosure relates to a circuit breaker having a main circuit unit cover and, more particularly, to a circuit breaker having a removable main circuit unit cover so as to be applicable to a change in rated capacity. A circuit breaker according to one embodiment of the present disclosure comprises: a main circuit unit connected to a power source and a load; a main circuit unit cover which insulatively covers the rear surface of the main circuit unit; a main circuit unit terminal connected to the main circuit unit and exposed to the outside through the main circuit unit cover; and a terminal protection member detachably coupled to the main circuit unit cover and insulatively covering the main circuit unit terminal.
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Patent Agency Ranking
公开(公告)号：US11735388B2
公开(公告)日：2023-08-22
申请号：US17269476
申请日：2019-08-06
Applicant: LS ELECTRIC CO., LTD.
Inventor： Jungwoo Yoo
Abstract: The present disclosure relates to a direct current relay and, more particularly, to a direct current relay including a mover assembly having improved support force with respect to a movable contactor. The direct current relay according to an embodiment of the present disclosure comprises a pair of fixed contactors and a movable contactor which is moved up and down by an actuator to come into contact with or be separated from the pair of fixed contactors, comprises a mover support disposed below the movable contactor and connected to the actuator by a shaft; a mover holder disposed above the movable contactor and fixed to the mover support; a contact pressure spring disposed between the movable contactor and the mover support to provide a contact pressure to the movable contactor; and a supporting pin installed to extend through the movable contactor and the mover holder.
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公开(公告)号：US11677880B2
公开(公告)日：2023-06-13
申请号：US16971928
申请日：2019-01-10
Applicant: LS ELECTRIC CO., LTD.
Inventor： Ji-Hyun Choi
CPC classification number: H04M7/0093 , G05B23/0283 , H02J7/0047 , H04L65/40 , H04M3/4228 , H04M3/42314 , G05B2219/37337 , H05B47/28
Abstract: A switchboard management system according to an embodiment of the present disclosure comprises: at least one gateway connected to at least one from among a plurality of circuit breakers in a switchboard panel; and a server connected to the at least one gateway, wherein the at least one gateway comprises an environment sensing unit for acquiring environment data on the at least one circuit breaker connected thereto, and the server receives, from the at least one gateway, driving information on the plurality of circuit breakers and the environment data and predicts the remaining lifespan of each of the plurality of circuit breakers on the basis of the received driving information and environment data.
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公开(公告)号：US20230144848A1
公开(公告)日：2023-05-11
申请号：US17916715
申请日：2021-03-29
Applicant: LS ELECTRIC CO., LTD.
Inventor： Young KIM , Min-Kyu SEO
IPC: H02B1/36 , H02B11/133 , H02B11/167
CPC classification number: H02B1/36 , H02B11/133 , H02B11/167
Abstract: The present disclosure relates to a power device for continuously detecting entry and exit positions. The power device comprises: a cradle having a cradle terminal formed therein; a breaker main body mechanically and electrically connected to or separated from the cradle terminal; and a girder and a truck which are transfer devices for moving the breaker main body to a connection or separation position, wherein the power device comprises: a position detection area portion formed on a side surface of the breaker main body; and a sensor module provided with a non-contact sensor which faces the position detection area portion and detects the position of the breaker main body by sensing a moving position of the position sensing area. portion, the sensor module being fixedly coupled to the inner surface of the cradle.
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公开(公告)号：USD985403S1
公开(公告)日：2023-05-09
申请号：US29804954
申请日：2021-08-24
Applicant: LS ELECTRIC CO., LTD.
Designer： Sungman Kim
Abstract: FIG. 1 is a front perspective view of a wireless thermal sensor for electric power device showing the new design:
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left-side elevation view thereof;
FIG. 6 is a right-side elevation view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.-
公开(公告)号：US20230120215A1
公开(公告)日：2023-04-20
申请号：US17909626
申请日：2021-02-26
Applicant: LS ELECTRIC CO., LTD.
Inventor： Yong Ik PARK
Abstract: The present disclosure relates to an arc extinguishing assembly including a sealing member and a circuit breaker including same. The sealing member is pressed and elastically deformed between coupling surfaces of the arc extinguishing assembly and the circuit breaker, and accordingly, a gap between the coupling surfaces of the arc extinguishing assembly and the circuit breaker is sealed. Accordingly, when an arc is generated, a temporary pressure increase in the circuit breaker increases and the arc can be smoothly extended.
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