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公开(公告)号：EP4024431A1
公开(公告)日：2022-07-06
申请号：EP20857000.2
申请日：2020-04-07
发明人： PARK, Jinhee , YOO, Jungwoo
摘要： Disclosed are an arc path forming unit and a direct current relay comprising same. The arc path forming unit according to an embodiment of the present invention comprises a single magnet unit disposed on one side of a magnet frame, and a plurality of magnet units disposed on another side opposite to the one side. The plurality of magnet units are sequentially arranged in the longitudinal direction. One side of a magnet unit positioned between at least two of the plurality of magnet units and facing the single magnet unit is magnetized with the same polarity as that of one side of the single magnet unit facing the magnet unit. As such, magnetic fields in the direction of exerting repulsive forces on each other are formed in the central portion of the direct current relay. Accordingly, since the arc does not move to the central portion, damage to components disposed in the central portion can be prevented.
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公开(公告)号：EP3955013A1
公开(公告)日：2022-02-16
申请号：EP20786853.0
申请日：2020-03-25
发明人： KANG, Sunghee
IPC分类号： G01R31/26 , G01R19/165 , G01R19/32
摘要： The present invention relates to a monitoring system for a plurality of power devices that are serially connected in a main circuit of a current transmission path, the monitoring system comprising: a first power device and a second power device which respectively include a semiconductor element; a first sensor which is connected to each of the first and second power devices, and which senses information related to a first current flowing in the first power device; a second sensor for sensing information related to a second current flowing in the second power device; a third sensor for sensing information related to a third current flowing between the first power device and the second power device; and a control unit for comparing the first current and the second current on the basis of the third current measured by the third sensor, and determining whether the state of each power device is abnormal on the basis of a difference with the third current.
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公开(公告)号：EP3930183A1
公开(公告)日：2021-12-29
申请号：EP19916289.2
申请日：2019-07-11
发明人： RYU, Hyun Gyu , YANG, Chun Suk , JEON, Jong Wook , CHI, Min Hun
摘要： The present invention relates to an interface circuit of a motor driving apparatus, the interface circuit comprising a power circuit unit for controlling driving of a motor, and a control panel unit which controls the power circuit unit and provides a user interface, wherein the power circuit unit further comprises a second MCU which controls a relay and an additional device unit and detects an operation state of the additional device unit, and the second MCU can communicate with a first MCU of the control panel unit via a communication line.
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14.发明公开
公开(公告)号：EP3929957A1
公开(公告)日：2021-12-29
申请号：EP19915821.3
申请日：2019-09-10
发明人： AHN, Kwang-Hyeon
IPC分类号： H01H33/666 , H01H33/662
摘要： The present invention relates to a motion sensing device for a vacuum circuit breaker and a vacuum circuit breaker comprising same. A motion sensing device for a vacuum circuit breaker, according to one embodiment of the present invention, comprises: a sensor module, installed adjacent to a main shaft, for sensing an operation state of the main shaft; and a bracket, coupled to the sensor module, for supporting the sensor module.
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公开(公告)号：EP3905287A1
公开(公告)日：2021-11-03
申请号：EP19902184.1
申请日：2019-09-18
发明人： CHUNG, Han-Baek
摘要： 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：EP3846195A1
公开(公告)日：2021-07-07
申请号：EP19856393.4
申请日：2019-08-06
发明人： YOO, Jungwoo
IPC分类号： H01H33/59
摘要： The present invention 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 invention, comprising 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：EP3846194A1
公开(公告)日：2021-07-07
申请号：EP19855431.3
申请日：2019-08-13
发明人： YOO, Jungwoo
摘要： The present invention relates to a direct current relay and, more specifically, to a direct current relay having a mover assembly having improved contact pressure. A direct current relay according to an aspect of the present invention, comprising: 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; an upper yoke and a lower yoke disposed above and below the movable contactor to generate an electromagnetic force, respectively; and a contact pressure spring disposed between the lower yoke and the mover support, wherein the upper yoke and the lower yoke form a magnetic path to offset an electron repulsive force generated between the fixed contactors and the movable contactor.
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公开(公告)号：EP3846193A1
公开(公告)日：2021-07-07
申请号：EP19855322.4
申请日：2019-08-13
发明人： YOO, Jungwoo
IPC分类号： H01H33/59
摘要： The present invention relates to a direct current relay, and more specifically, to a direct current relay having a movable assembly with improved contact pressure. The direct current relay according to an embodiment of the present invention comprises a pair of fixed contacts, and a movable contact which is moved vertically by an electromagnetic force to contact or be separated from the pair of fixed contacts, wherein an upper yoke and a lower yoke are respectively provided on the upper and lower portions of the movable contact, a contact spring is provided on the lower portion of the lower yoke, and the lower yoke is pressed by the contact spring to move the movable contact.
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公开(公告)号：EP3734635A1
公开(公告)日：2020-11-04
申请号：EP18897478.6
申请日：2018-11-22
发明人： OH, Kyunghwan , OH, Kihwan
摘要： The present device was conceived in order to resolve the aforementioned problem, and the objective thereof is to provide an arc chamber of a circuit breaker that enhances assemblability and ensures the consistency of the product. An arc chamber of the circuit breaker according to one embodiment of the present device comprises: a plurality of grids arranged at predetermined intervals outside a motion locus of a movable contactor and having a body portion and a leg portion extending from one side of the body portion; and a fixing cap having a receiving portion that is inserted into the leg portion in a press-fitting manner, wherein the fixing cap has a coupling portion extending to a side of the body portion at one side thereof.
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公开(公告)号：EP4439615A1
公开(公告)日：2024-10-02
申请号：EP22898847.3
申请日：2022-10-17
发明人： KIM, Ha Su , PARK, Jin Hee
摘要： An arc inducing part and a direct current relay including the same are disclosed. The arc inducing part and a direct current relay including the same according to one aspect of the present disclosure may include a magnet housing coupled to the outside of an arc chamber, wherein the arc chamber partially accommodates a fixed contactor; and a magnet part accommodated in a magnet space formed in the magnet housing to form a magnetic field inside the arc chamber, and wherein a plurality of fixed contacts are provided and the plurality of fixed contacts are disposed to be spaced apart from each other in one direction inside the arc chamber, and wherein the magnet part may be disposed along the other direction that forms a predetermined angle with the one direction.
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