The present invention relates to a semiconductor circuit breaker comprising: a semiconductor switch unit which is arranged at an input electric circuit through which current is supplied from a power source to a load, and which includes at least one semiconductor switch for opening or closing the input electric circuit; a control unit, which controls a gate driver of the at least one semiconductor switch so as to control the opening or closing of the input electric circuit; and at least one inductor which is a separate electric circuit from the input electric circuit having the semiconductor switch unit arranged thereon, and which is arranged at a feedback electric circuit through which the current that is output from the load is fed back to the power source.
H02H 7/20 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
H02H 9/00 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
H03K 17/693 - Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
The present disclosure discloses a mold transformer which is capable of further relaxing the ambient electric field distribution thereof, the mold transformer comprising: a winding part; a shield member formed in a columnar shape having a hollow space formed therein and formed of an electrically conductive material, wherein a part of a lead wire of the winding part is inserted through and coupled to the hollow space; and a mold part disposed to surround the winding part and the shield member and formed of an electrical insulation material.
A smart feeding system is disclosed. According to an aspect of the present invention, the smart feeding system comprises: a component supply unit for receiving a component supplied from the outside; and a component receiving unit positioned below a part of the component supply unit and configured to receive the component transferred from the component supply unit and to provide the received component to the outside. The component receiving unit comprises: a receiving conveyor extending in the longitudinal direction so as to support the component transferred from the component supply unit; and a stopper member for delimiting the inner space of the receiving conveyor into a plurality of spaces along the longitudinal direction. The component transferred from the component supply unit is positioned in one of the plurality of spaces, is moved to another space among the plurality of spaces along the longitudinal direction, and is provided to the outside. The stopper member can be coupled to the receiving conveyor to be able to move upwards/downwards such that the one space and the other space are fluidly connected or blocked.
B65G 37/00 - Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
B65G 47/88 - Separating or stopping elements, e.g. fingers
B65G 27/04 - Load-carriers other than helical or spiral channels or conduits
B65G 47/14 - Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding
B65G 27/16 - Applications of devices for generating or transmitting jigging movements of vibrators, i.e. devices for producing movements of high frequency and small amplitude
B65G 43/08 - Control devices operated by article or material being fed, conveyed, or discharged
Disclosed is a superconductor fault current limiter. A superconductor fault current limiter according to one aspect of the present invention comprises: a housing accommodating a cryogenic fluid; first superconductor modules accommodated in the cryogenic fluid; second superconductor modules vertically stacked with the first superconductor modules; a first conducting unit connecting one side of the first superconductor modules; a second conducting unit connecting the other side of the first superconductor modules and the other side of the second superconductors; and a third conducting unit connecting one side of the second superconductor modules.
The present invention discloses an arc path formation unit and a direct current relay including the same, which can effectively guide a generated arc to the outside, including a magnet holder unit disposed between the outside of an arc chamber and the inside of a frame and including a first holder and a second holder different from each other; and a magnet unit attached to one surface of the magnet holder unit facing the arc chamber and forming a magnetic field in the arc chamber, wherein the first holder and the second holder are each bent at a predetermined angle and extended, the magnet unit is attached to both ends thereof, and a magnetic field formed in the magnet unit forms an electromagnetic force together with the electric current energizing through the direct current relay to guide the arc in a direction away from a fixed contact.
A communication device according to an embodiment of the present disclosure comprises: a communicator; and a processor configured to: if a network composed of a first topology including a star topology or a line topology is included on a communication path connecting the communication device and the other communication device, configure data to be transmitted to the other communication device through a first interface for accessing a RAPIEnet (Real-time Automation Protocol for Industrial Ethernet)-based upper layer and an Internet Protocol (IP)-based lower layer, and transmit the data to the other communication device through the communicator using the communication path.
The present disclosure relates to a solid state circuit breaker, comprising: a semiconductor switch unit including a semiconductor switch that electrically connects or disconnects a power system and a load according to a voltage applied to a gate terminal; and a control unit that, when the semiconductor circuit breaker is turned on, controls the semiconductor switch to repeat turn-on and turn-off operations for a predetermined initial driving time so as to gradually alleviate the magnitude of inrush current caused by an initial connection between the power system and the load.
H02H 9/00 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
H02H 3/02 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details
H02H 3/093 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current with timing means
The present disclosure relates to a temperature measurement device, comprising: a housing having, formed therein, a space through which a power line and an optical cable penetrate, wherein the housing extends in one direction in which the power line extends; and a cable winding part which is disposed in the space of the housing and supports the power line penetrating through the housing. The cable winding part is composed of: a column member which is connected to the inner surface of the housing and extends in the space such that the optical cable penetrating through the housing is wound thereon; and a support member for at least partially supporting the outer circumference of the power line penetrating through the housing. Accordingly, a temperature measurement device having a structure that is easy to install on and separate from a power line can be provided.
G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
An inverter device is disclosed. The present invention according to one aspect comprises: a power conversion module for converting one from among direct current power and alternating current power into the other; a first cooling module in contact with the power conversion module so as to receive the heat generated from the power conversion module; and a second cooling module in contact with the first cooling module so as to at least partially receive the heat transferred to the first cooling module, wherein the first cooling module and the second cooling module can utilize, as cooling media, fluids of different phases.
An inverter device is disclosed. The inverter device, according to one aspect of the present invention, comprises: a power conversion module which converts one of direct current power and alternating current power to the other; a cooling module which is coupled to the power conversion module, so as to receive heat generated therefrom; and a cover member which accommodates the power conversion module and is coupled to the cooling module to exchange heat therewith, wherein the cooling module is in direct contact with a portion of the power conversion module to exchange heat therewith, and the cover member accommodates an other portion of the power conversion module to receive heat generated by the other portion thereof, and may be arranged to be in direct contact with the cooling module.
A brazing system according to an embodiment of the present invention, which is for brazing an object to be bonded to a base material, comprises: a turntable provided with a reception part for receiving the base material and rotatable clockwise or counterclockwise; a base material supply device for supplying the base material to the reception part; a brazing filler metal supply device for supplying a brazing filler metal to an upper side of the base material; a first heating device for bonding the brazing filler metal to the base material; a bonding object supply device for supplying the object to be bonded to an upper side of the brazing filler metal bonded to the base material; a second heating device which is in contact with opposite sides of the base material to fix the base material and is provided with electrodes for supplying electric current to the base material so as to bond the object to be bonded to the base material; and a cooling device which comes into contact with the object to be bonded to cool the object to be bonded.
B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
B24B 41/06 - Work supports, e.g. adjustable steadies
13.
COOLING MODULE AND BRAZING APPARATUS COMPRISING SAME
A cooling module, according to an embodiment of the present disclosure, for cooling an object to be brazed comprises: a body part having a contact part in contact with the object to be brazed, and cooling the object to be brazed; a first nipple connected to one side of the body part, and having a first supply flow path for receiving fluid from the outside; and a second nipple connected to the other side of the body part, and having a first discharge flow path for discharging the fluid to the outside, wherein the body part includes: a second supply flow path formed inside the body part so as to be connected to the first supply flow path; a second discharge flow path formed inside the body part so as to be connected to the first discharge flow path; and a connection flow path positioned to be adjacent to the contact part of the body part, and connecting the second supply flow path and the second discharge flow path.
An arc chamber and a direct current relay including the same are disclosed. The arc chamber may include a chamber space for accommodating a fixed contactor and a movable contactor that are electrically connected to an external power source or an external load; and a plurality of walls surrounding the chamber space from outside, wherein the plurality of walls include a first wall extending in one direction; a second wall extending in the other direction while forming a predetermined angle with the first wall from an end of the first wall; a third wall extending in the one direction while forming a predetermined angle with the second wall from an end of the second wall; and a fourth wall extending in the other direction while forming a predetermined angle with the third wall from an end of the third wall to the end of the first wall.
A sub contact part and a direct current (DC) relay including the same are disclosed. The sub contact part according to one aspect of the present disclosure may include a body part having spaces spaced apart from each other therein and; and a plurality of sub connectors each accommodated in the spaces of the body part and electrically connected to an external control power source and a core part, wherein the body part includes a plurality of legs each having the spaces spaced apart from each other therein and extending in one direction; and a bridge extending between the plurality of legs and coupled to each of the plurality of legs.
H01H 33/72 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
H01H 33/02 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means Details
H01H 33/53 - CasesReservoirs, tanks, piping or valves, for arc-extinguishing fluidAccessories therefor, e.g. safety arrangements, pressure relief devices
The present invention relates to an arc detection device comprising: a high frequency signal detection unit for detecting a high frequency signal from a current flowing through a power line; a signal strength detection unit for detecting the strength of the detected high frequency signal; a voltage detection unit for detecting a change in the voltage of the power line; and a control unit for detecting zero crossing points, which are time points having a reference voltage according to phase alternation of the voltage from the change in voltage, detecting a preset number of peaks from changes in the strength of the high frequency signal detected at intervals between the detected zero crossing points, and determining whether arcs occur in the intervals by comparing signal strength values of the detected preset number of peaks to a preset reference value.
The present disclosure discloses an arc path formation unit and a direct current relay including the same, which can effectively guide a generated arc to the outside, including a magnet holder unit disposed between the outside of an arc chamber and the inside of a frame and including a first holder and a second holder different from each other; and a magnet unit attached to one surface of the magnet holder unit facing the arc chamber and forming a magnetic field in the arc chamber, wherein the first holder and the second holder are each bent at a predetermined angle and extended, the magnet unit is attached to both ends thereof, and a magnetic field formed in the magnet unit forms an electromagnetic force together with the electric current energizing through the direct current relay to guide the arc in a direction away from a fixed contact.
An insulation monitoring device comprises a signal generation unit generating a measurement signal having a preset voltage and applying the measurement signal to the ground; a signal detection unit including a coupler resistor connected to a transmission line and a detection resistor provided between the coupler resistor and the other end of the signal generation unit, and detecting the voltage of the measurement signal distributed to the internal resistance of the insulation monitoring device according to the voltage difference across the detection resistor; and a control unit detecting a transient voltage, due to the charging and discharging of a system capacitor and generated by parasitic capacitance between the transmission line and ground, from the voltage detected by the signal detection unit, and checking the connection state of the insulation monitoring device to the transmission line and ground based on the result of detecting the transient voltage.
The present invention relates to a distribution board, comprising: an enclosure forming a breaker chamber in which a breaker is accommodated; a breaker chamber door for opening and closing the breaker chamber; a power device chamber formed at the breaker chamber door to accommodate a power device; and a power device chamber door rotatably provided at the breaker chamber door so as to open and close the power device chamber, and forming the power device chamber cooperatively with the breaker chamber door. Accordingly, it is possible to check and maintain/repair the power device without opening the breaker chamber.
The present invention relates to an input counting device of a circuit breaker, and to an input counting device of a circuit breaker, the device counting the number of inputs of the circuit breaker, which includes a fixed contact, a movable contact and an opening/closing device having a rotary shaft, and comprising: a driving arm coupled to the rotary shaft; an indicator for displaying the number of inputs; a counting lever which is rotatably provided at one side of the indicator and which counts the number of inputs; an action pin which can come in contact with the driving arm and which is disposed so as to be liftable/lowerable; an operating lever having one end portion disposed to be able to push the counting lever; and a buffer spring extendably interposed between the action pin and the operating lever, wherein the driving arm is disposed to be capable of pressing the action pin during the input of the opening/closing device. Therefore, the number of inputs (on) can be counted during input, and driving force can be buffered and transmitted.
G06M 1/08 - Design features of general application for actuating the drive
G06M 1/27 - Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
The present invention relates to a flux gate-type residual current detection device comprising: an oscillation unit which generates a pulse current having a preconfigured frequency; a core unit in which at least one first core has at least one first coil wound thereon and is thus magnetized according to the pulse current, a second core has a second coil wound thereon, a third coil wound on the first and second cores is applied, one end of the at least one first coil is connected to the oscillation unit, one end of the second coil is grounded, and a compensation current is applied to the third coil; and a control unit which determines a frequency of the pulse current according to at least one of characteristics of the at least one first core, detects a DC component leakage current of a conductor to be measured, by filtering out a component having the frequency from a voltage signal of a current induced in the at least one first core, and applies, as the compensation current, a reverse current corresponding to the detected DC component leakage current to the third coil.
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
G01R 31/52 - Testing for short-circuits, leakage current or ground faults
G01R 19/14 - Indicating direction of currentIndicating polarity of voltage
G01R 23/02 - Arrangements for measuring frequency, e.g. pulse repetition rateArrangements for measuring period of current or voltage
G01R 23/165 - Spectrum analysisFourier analysis using filters
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
G01R 29/027 - Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
G01R 19/252 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency
G01R 23/15 - Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements
Provided is a device for moving a circuit breaker for an electric power device. A device for moving a circuit breaker for an electric power device, according to one aspect of the present invention, may comprise: an actuator for generating driving force to move a circuit breaker disposed inside a cradle of the electric power device; a support frame that can be removably coupled to the outer portion of the cradle to support the actuator; a distance-measuring sensor provided on one side of the support frame to measure the distance from the circuit breaker; and a controller configured to control the actuator on the basis of information obtained by the distance-measuring sensor.
An insertion and withdrawal device is disclosed. The insertion and withdrawal device according to one aspect of the present invention comprises: a bracket unit detachably coupled to a distribution frame in a first direction; and a power unit which is detachably coupled to the bracket unit in the first direction and which provides power for inserting and withdrawing a circuit breaker accommodated in the distribution frame, wherein the bracket unit includes: a bracket body detachably coupled to the distribution frame; and a guide profile, which is coupled to the bracket body and extends in the first direction, and the power unit can include a power bracket coupled to the guide profile so as to be movable in the first direction.
A duct module and a power conversion module including the same are disclosed. The duct module according to an aspect of the present disclosure may include: a duct body formed to extend in one direction and communicating with a flow path member respectively; and a flow path coupling part coupling the duct body to the flow path member respectively and, wherein the duct body includes a duct space that is formed inside the duct body, extends in the one direction, and is formed to be open at each end in the extending direction to communicate with the flow path member; and at least one surface surrounding the duct space in an outer circumferential direction.
A smart distribution board according to an embodiment of the present disclosure comprises a module expansion device mounted on each of a plurality of modules and connecting the plurality of modules with each other, wherein the module expansion device comprises: a PCI slot for connecting the module of the plurality of modules, on which the module expansion device is mounted; and at least one expansion connector for connecting the module on which the module expansion device is mounted and at least another module.
The present disclosure discloses an arc path formation unit and a direct current relay including the same, which can effectively guide a generated arc to the outside, including a magnet holder unit disposed between the outside of an arc chamber and the inside of a frame and including a first holder and a second holder different from each other, and a magnet unit attached to one surface of the magnet holder unit facing the arc chamber and forming a magnetic field in the arc chamber, wherein the first holder and the second holder are each bent at a predetermined angle and extended, the magnet unit is attached to both ends thereof, and a magnetic field formed in the magnet unit forms an electromagnetic force together with the electric current energizing through the direct current relay to guide the arc in a direction away from a fixed contact.
The present invention relates to an apparatus and a method for controlling a flying capacitor voltage of a direct-current to direct-current converter. The present invention may change a voltage control value for controlling a switch according to a sign of an inductor current of the direct-current to direct-current converter, to thereby stably control a voltage of a flying capacitor even if the direction of the current is changed, and may reduce a control error even when the direct-current to direct-current converter has a light load.
H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
29.
CIRCUIT BREAKER GUIDE RAIL AND DISTRIBUTION BOARD INCLUDING SAME
The present invention relates to a circuit breaker guide rail and a distribution board including same. The circuit breaker guide rail of the present invention is provided at the front of a circuit breaker compartment in which a circuit breaker is accommodated, so as to guide the movement of the circuit breaker, and comprises: a guide rail body having a rear end coupled to the circuit breaker compartment; and an interlock device including an interlock body provided at the front end of the guide rail body and arranged at any one of a permitted location at which movement of the circuit breaker placed on the upper surface of the guide rail body is permitted and an inhibition location at which movement of the circuit breaker is inhibited. Therefore, the circuit breaker can be easily moved, and the circuit breaker can be prevented from falling.
The present invention relates to a modular PLC device, and provides a modular PLC device comprising: a network adapter connected to a CPU module for a control command; an extension module including a plurality of input/output modules which control input/output of a sensor or actuator according to the control command transmitted through the CPU module or the network adapter and which are attachably/detachably coupled to a DIN rail so as to be extendably arranged in the lateral direction along the DIN rail; and a slide module formed on surfaces facing each other between the extension modules such that one extension module can slide along the side of at least one neighboring extension module so as to be attached to or detached from the DIN rail.
The present disclosure relates to a circuit breaker having an energy releasing mechanism of an opening/closing mechanism part, and a circuit breaker according to an embodiment of the present invention comprises: an input latch locking device rotatably formed to restrict or release an input latch according to rotating angles thereof; an interlock movement rail which is installed on a cradle and in which an inspection position, a preparation position, and a driving position are configured; an interlock member for operating at least one among the input latch and a trip latch in a section excluding the inspection position, the preparation position, and the driving position while vertically moving in association with a relative movement of the interlock movement rail; and at least one link member connected between the interlock member and the input latch locking device and switching a linear movement in a vertical direction of the interlock member to a rotation movement, thereby rotating the input latch locking device.
H01H 71/52 - Manual reset mechanisms actuated by lever
32.
INSULATION MONITORING SYSTEM COMPRISING MULTIPLE INSULATION MONITORING DEVICES, AND A METHOD FOR CONTROLLING INSULATION MONITORING DEVICES CONSTITUTING SAME SYSTEM
The present invention comprises multiple insulation monitoring devices, each of which: maintains, in a deactivated state, a signal generation unit for applying a pulse signal to one of at least one internal line connected to a power line via a transformer; detects the reception of a notification signal from at least one other insulation monitoring device that is communicatively connected; activates the deactivated signal generation unit to apply a pulse signal to the one internal line when the notification signal is received as a result of the detection; calculates the insulation resistance between the internal line and a ground on the basis of the pulse signal applied from the activated signal generation unit; and transmits a notification signal to the at least one other insulation monitoring device that is communicatively connected; and switches the activated signal generation unit to a deactivated state.
The present invention relates to a distribution board equipped with a rotation preventer, and more specifically to a distribution board equipped with a rotation preventer, by which a coupling force between a busbar and a branch busbar is enhanced. According to the distribution board equipped with a rotation preventer, according to one embodiment of the present invention, a coupling force between a busbar and a branch busbar is enhanced by means of a rotation preventer which is coupled to the busbar and the branch busbar.
The present invention relates to an intelligent human-machine interface (HMI) time synchronization device and method, which are capable of synchronizing HMI time with a programmable logic control (PLC) time, and comprises: a communication unit communication-linked to at least one PLC; and a control unit for synchronizing the PLC time to the HMI time, wherein the control unit identifies, when communication-linked to the PLC, whether datatime address information is present in the database of the PLC, reads, when the datatime address information is present, the current time value of the PLC on the basis of the datatime address information, and sets the read current time value of the PLC as the current time value of the HMI so as to synchronize the PLC time to the HMI time.
The present invention relates to an initial starting apparatus and method for a solid-state transformer, the initial starting apparatus comprising: a plurality of power conversion unit modules connected in series with each other; and a synchronization controller that provides a synchronization signal of a set cycle to the plurality of power conversion unit modules so that the plurality of power conversion unit modules operate according to the synchronization signal, wherein each of the plurality of power conversion unit modules may be started by determining a detected synchronization signal as a start signal when not in operation.
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 1/36 - Means for starting or stopping converters
H02M 5/453 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal
H02M 7/04 - Conversion of AC power input into DC power output without possibility of reversal by static converters
36.
DIGITAL CONTROL APPARATUS CAPABLE OF HIGH-SPEED SAMPLING AND METHOD THEREFOR
The present invention relates to a digital control apparatus capable of high-speed sampling and a method therefor. According to the present invention, current or voltage sampling for controlling a PWM module of a power conversion device that is to be controlled is performed multiple times during a period of current or voltage, and thus it is possible to accurately control the digital control apparatus without considering a circuit or device delay of the digital control apparatus unlike the prior art.
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 3/157 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
The present invention relates to an intelligent electronic device comprising: a sensor unit including a sensor that measures the current and voltage of power supplied from a line to power equipment; an output unit for outputting a control signal for driving a circuit breaker; a plurality of IED modules that are each connected to the sensor unit so as to receive measurement results of the sensor unit, and that each determine whether there is overvoltage or overcurrent according to an accident situation on the basis of the received measurement results, wherein the plurality of IED modules are formed such that any one of the plurality of IED modules has output authority to control the output unit to output a control signal, and are formed such that a first module having the output authority controls, according to a self-diagnosis result on the basis of the measurement results of the sensor unit, the output unit according to its own accident situation determination result, or the output authority is transferred to a second module such that the second module controls the output unit according to its own accident situation determination result.
The present invention relates to a soft start control method for multiple motors, and an inverter using same. The inverter according to an embodiment of the present invention is an inverter which converts supplied alternating current into three-phase (U, V, W) alternating current and outputs same, the inverter comprising: 2n relays which operate on/off of respective output switches; and a control unit which controls the respective relays to operate the on/off of the respective output switches so as to control respective motors to be connected to the three phases (U, V, W) of the inverter or connected to three phases (R, S, T) of an alternating current power source unit.
H02P 5/74 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
H02P 1/54 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors
H02P 1/10 - Manually-operated on/off switch controlling relays or contactors operating sequentially for starting a motor
H02P 25/18 - Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
H02P 27/04 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
H02M 5/45 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
A cable connector is provided. The cable connector according to an aspect of the present disclosure is a cable connector for connecting a lug, which is formed at one end of a cable and includes a protrusion with a greater diameter than the cable, to a circuit board provided within a case, the cable connector comprising: a first member fixed to the case and having a through-hole into which the cable can be inserted; and a second member provided at one side of the first member and having a coupling hole to which the protrusion of the lug can be coupled, wherein the second member includes a first lug fixing portion formed at the inlet side of the coupling hole, adjacent to the first member, to protrude inward into the coupling hole.
The present disclosure discloses an arc path formation unit and a direct current relay including the same, which can effectively guide a generated arc to the outside, including a magnet holder unit disposed between the outside of an arc chamber and the inside of a frame and including a first holder and a second holder different from each other, and a magnet unit attached to one surface of the magnet holder unit facing the arc chamber and forming a magnetic field in the arc chamber, wherein the first holder and the second holder are each bent at a predetermined angle and extended, the magnet unit is attached to both ends thereof, and a magnetic field formed in the magnet unit forms an electromagnetic force together with the electric current energizing through the direct current relay to guide the arc in a direction away from a fixed contact.
The present disclosure relates to an overvoltage suppression unit provided in a semiconductor circuit breaker using a semiconductor switch for power, the overvoltage suppression unit comprising: an overvoltage suppression element unit disposed on a first surface of a printed circuit board and including at least one overvoltage suppression element; a pattern fuse connected to the overvoltage suppression element unit and patterned on the first surface of the printed circuit board; a first case forming a housing and covering the first surface of the printed circuit board on which the pattern fuse and the overvoltage suppression element unit are disposed; and a lead wire connected to the pattern fuse, wherein the lead wire is formed so as to connect the first surface of the printed circuit board and a second surface of the printed circuit board.
H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
A sub-module is disclosed. The sub-module, according to one aspect of the present invention, comprises: an IGBT which is connected to an external power source or load in an electrically conductive manner and of which a surface in one direction has a greater surface area than a surface in another direction; a heat-dissipating member coupled to one surface of the IGBT in the one direction, so as to cool the heat generated by the IGBT; and a capacitor member which is connected to the IGBT in an electrically conductive manner and is arranged to face the other surface of the IGBT in the one direction, wherein the heat-dissipating member comprises a heat-dissipating body coupled to the one surface of the IGBT in the one direction, a heat-dissipating support part which continuously extends from the heat-dissipating body to the capacitor member and is coupled to each of the heat-dissipating body and the capacitor member, and an IGBT-accommodating part which accommodates the IGBT and is defined by being partially surrounded by each of the heat-dissipating body and the capacitor member.
A junction module for a fault current limiter is provided. A junction module for a fault current limiter, according to one aspect of the present invention, is a junction module for a fault current limiter for electrically connecting an external wire through which an operating current flows and a current limiting module for a fault current limiter which detects and limits a fault current, and may comprise: a junction module housing; a plurality of terminal sets each including an input terminal and an output terminal provided in the junction module housing so as to be electrically connected to any one of the external wire, the current limiting module, and another junction module; and a junction wiring unit provided inside the junction module housing such that the plurality of terminal sets are electrically connected.
The present disclosure discloses an arc path formation unit and a direct current relay including the same, which can effectively guide a generated arc to the outside, including a magnet holder unit disposed between the outside of an arc chamber and the inside of a frame and including a first holder and a second holder different from each other, and a magnet unit attached to one surface of the magnet holder unit facing the arc chamber and forming a magnetic field in the arc chamber, wherein the first holder and the second holder are each bent at a predetermined angle and extended, the magnet unit is attached to both ends thereof, and a magnetic field formed in the magnet unit forms an electromagnetic force together with the electric current energizing through the direct current relay to guide the arc in a direction away from a fixed contact.
The present disclosure relates to a heat sink for an electric machine and, more specifically, to a heat sink for an electric semiconductor element used in an electric module, and the present invention is characterized by; comprising a cooling plate having an inlet and an outlet; having a tank which is formed in a plate shape inside the cooling plate and forms a coolant flow path connected to the inlet and the outlet, and having multiple collision pillars continuing from the top surface to the base surface of the tank formed in the tank.
The present disclosure relates to a semiconductor circuit breaker, and more particularly, to a semiconductor circuit breaker having excellent heat dissipation. The semiconductor circuit breaker according to one embodiment of the present invention comprises: a switching device provided in an upper space of an enclosure; an air gap switch (mechanical switch) provided in the upper space and disposed forward of the switching device; an electric circuit disposed on an upper portion of the switching device; a heatsink provided in a lower space of the enclosure and coupled to a lower portion of the switching device; and a cooling fan provided in the lower space and disposed in a front portion of the enclosure.
A distribution board having a drawer-type device panel according to an embodiment of the present invention comprises: a distribution board in which a power device is installed; a drawer part outer case plate which is installed on one surface of the distribution board and has an accommodation part; and a drawer plate inserted into the drawer part outer case plate so as to be able to be opened or closed, wherein a rear surface part of the drawer plate is formed to have a height lower than the height of a front surface part thereof so as to enable the drawer plate to rotate downward in a state where a part of the drawer plate is withdrawn therefrom. By a distribution board having a drawer-type device panel according to an embodiment of the present invention, a drawer-type panel for a low-voltage device is provided and thus occupies a small inner space in a distribution board. Particularly, the height of a space, in which the low-voltage device is installed, can be reduced. Accordingly, the height of the distribution board can be reduced.
The present invention relates to a superconducting fault current limiter and, more specifically, to a superconducting fault current limiter having a weight sensing unit, and a method for measuring a refrigerant level using same. The superconducting fault current limiter having a weight sensing unit, according to one aspect of the present invention, comprises: a tank unit; a superconducting element; a cooling unit; and a weight sensing unit. The method for measuring a refrigerant level using a superconducting fault current limiter having a weight sensing unit, according to one aspect of the present invention, comprises: a standard weight measurement step; a minimum level measurement step; a maximum level measurement step; and an appropriate level range identification step.
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
H01B 7/04 - Flexible cables, conductors, or cords, e.g. trailing cables
G01F 23/20 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of weight, e.g. to determine the level of stored liquefied gas
A product inspection system control method is disclosed. The product inspection system control method according to one aspect of the present invention may comprise steps in which: (a) an image sensor unit generates a plurality of pieces of detection information about the exterior, in a plurality of directions, of a product; (b) a detection information storage unit stores the generated detection information; (c) an analysis information calculation unit calculates analysis information by using the stored detection information; and (d) an analysis information storage unit stores the calculated analysis information.
A power apparatus is disclosed. A power apparatus according to one aspect of the present invention comprises: a housing unit having a space communicating with the outside; a purification unit accommodated in the space of the housing unit and configured to centrifugally separate foreign substances mixed in external fluid flowing into the space; a discharge unit fluidly connected to the purification unit and receiving the separated foreign substances; and a flow path unit fluidly connected to the purification part and the discharge part to form a flow path for the foreign substances, wherein the purification unit includes a purification module configured to form a flow of the introduced fluid into a vortex shape, and the discharge unit may include a discharge fan assembly that communicates with the flow path unit and applies suction force to the separated foreign substances.
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
B01D 53/24 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by centrifugal force
The present invention relates to a current measuring device comprising: a plurality of unit modules which are provided with mutually different grounds and are connected in series; a power unit which supplies high-voltage DC or AC power to the plurality of unit modules via a line; and a current sensor which measures a current flowing through the line.
An arc elimination device is disclosed. The arc elimination device according to an aspect of the present disclosure, may comprise: a housing; an arc extinguishing part which is positioned inside the housing and provided with a high-voltage electrode and a ground electrode therein; an operating rod movable to electrify or non-electrify the high-voltage electrode and the ground electrode inside the arc extinguishing part; a steering handle coupled to one end of the operating rod to move the operating rod; a moving plate arranged between the arc extinguishing part and the steering handle to press and move the steering handle; an actuator for providing a driving force for moving the moving plate; and a power transmission unit for providing the driving force of the actuator to the moving plate to move the moving plate in a direction in which the moving plate presses the steering handle.
The present invention relates to a device for lifting a circuit breaker of a switchgear, the device comprising: a rail part that is located above the switchgear and has a plurality of vertically arranged compartments; an elevating part that can be guided and move above the rail part, and lifts the circuit breaker; and a lifting bracket that is fixed to two facing side surfaces of the circuit breaker, is coupled to a hook block of the elevating part, and moves up and down according to the actions of the elevating part.
H02B 11/12 - Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
B66C 1/66 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
B66C 23/20 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes with supporting couples provided by walls of buildings or like structures
The present invention relates to a power equipment room having a ventilation device and, more specifically, to a power equipment room having a ventilation device to be applied to a metal distribution board having arc-resistance performance. According to the power equipment room having a ventilation device, of one embodiment of the present invention, the ventilation device is provided in a circuit breaker room so as to function as a ventilation opening by being open in a normal state, and prevents safety accidents by being closed in the event of an arc accident.
The present invention relates to an instantaneous trip apparatus for a molded case circuit breaker and, more specifically, to an instantaneous trip apparatus for a molded case circuit breaker with improved blocking performance due to increased magnetic attraction. According to the instantaneous trip apparatus for a molded case circuit breaker according to one embodiment of the present invention, a heater is formed in a solenoid shape to generate a circular current. Accordingly, instantaneous suction force is strengthened by matching the direction of the magnetic field generated in a magnet with the direction in which an armature operates.
A transformer and a manufacturing method therefor are disclosed. A transformer according to an aspect of the present invention comprises: a housing having a housing space formed therein; a first winding portion connected to an external power source or a load to conduct electricity and accommodated in the housing space; a shield portion accommodated in the housing space to be spaced apart from the first winding portion, and connected to ground to conduct electricity; and a semiconducting layer formed to partially cover a surface surrounding the housing space, wherein the semiconducting layer is formed to have an area smaller, by a preset ratio, than the total area of the surface surrounding the housing space, the shield portion is positioned to be in contact with the semiconducting layer in the housing space, and the semiconducting layers respectively formed on the plurality of surfaces surrounding the housing space are continuous with each other and may be in contact with the shield portion to conduct electricity.
H01F 27/32 - Insulating of coils, windings, or parts thereof
H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
An arc extinguishing device is disclosed. The arc extinguishing device according to one aspect of the present invention may comprise: a grid unit positioned to be close to a fixed contact and a movable contact so as to extinguish an arc generated when the external fixed contact and movable contact are spaced apart from each other; an arc guide which is coupled to the grid unit so as to generate gas in response to the generated arc, and which extends in one direction; and an arc runner positioned to be close to each of the grid unit and the arc guide so that the generated arc is guided toward the grid unit.
The present invention relates to a switchboard circuit breaker lifting device comprising: a rail part positioned on the switchboard; an elevation part which is guided to move back and forth and left and right on the rail part, and which lifts power equipment; and a lifting bracket which is fixed to two facing side surfaces of the power equipment, and which is coupled to a hook block of the elevation part so as to move upward and downward in response to action of the elevation part, wherein the elevation part can include: a winding roller for winding a wire to which the lifting bracket is fixed; a gearbox for rotating the winding roller; and a rotation lever which is rotated by mean of an operation mechanism and which operates the gearbox.
B66C 17/06 - Overhead travelling cranes comprising one or more substantially-horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forgesOverhead travelling cranes comprising one or more substantially-horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports combined with auxiliary apparatus serving particular purposes
H02B 1/04 - Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
B66C 1/16 - Slings with load-engaging platforms or frameworks
A busbar is disclosed. The busbar according to one aspect of the present invention comprises a support part having lateral sides, and a plurality of plates coupled to the lateral sides so as to form an inner space, wherein heat radiation paths through which heat in the inner space moves toward the outside of the plurality of plates can be formed between the plurality of plates.
The present invention provides an arc chute, which can be provided to make close contact with a curved frame part, and a load switch comprising same, the arc chute comprising: two cover parts, which are arranged to be adjacent to the outer circumference of a frame part, are spaced apart from each other, and overlap each other in the axial direction of the frame part; and an arc grid which is arranged between the two cover parts so as to be coupled to each of the two cover parts, wherein the cover part is formed in a shape in which one side coming into contact with the outer circumference of the frame part corresponds to the outer circumference of the frame part.
A movable contact part and a breaker including same are disclosed. A movable contact part according to an aspect of the present invention may comprise: a movable terminal conductively connected to an external power source or an external load; a movable cable coupled and electrically connected to the movable terminal and extending outside the movable terminal; and a movable contact bar coupled and electrically connected to the movable cable and rotatably provided. The movable terminal may comprise: an insertion space formed through the inside of the movable terminal to accommodate the movable cable; and a buffer space formed through the inside of the movable terminal, communicating with the insertion space, and positioned between the insertion space and one longitudinal end of the movable terminal. The movable terminal may be configured such that when an external force is applied to the movable terminal, the one end of the movable terminal is pressed toward the insertion space to reduce the buffer space.
A control system and an efficient data processing method therefor are disclosed. The control system for processing a cycle service from among n (here, n is a natural number) stations, according to at least one of various embodiments of the present disclosure, comprises: a master station for making a read or write request for the cycle service; and at least one slave station for transmitting a frame according to the read request from the master station or receiving a frame according to the write request, wherein the master station can request, from the slave station, to read or write only the data that has changed in a period unit, which is a data reading or writing unit for the frame.
H04L 69/00 - Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
G05B 19/414 - Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
A fixed contact part and a breaker including same are disclosed. A fixed contact part according to an aspect of the present invention may comprise: a fixed contact bar conductively connected to an external power source or an external load; a fixed contact coupled to the fixed contact bar and in contact with a movable contact; and an arc runner positioned on one side of the fixed contact bar in the height direction and configured to guide a generated arc. The fixed contact bar may comprise: a first extension part extending in one direction; and a second extension part extending while forming a predetermined angle relative to the first extension part. The arc runner may be seated on and supported by the second extension part.
The present disclosure relates to a cooling control device for a superconducting fault current limiter, the cooling control device comprising a superconducting fault current limiter for cooling a saturated liquid coolant with a freezer to maintain a temperature of a subcooled liquid coolant in which a superconducting element is immersed, a pressure sensor for detecting a pressure of a second container in which the saturated liquid coolant of the superconducting fault current limiter is accommodated, and a control unit for estimating a temperature of the saturated liquid coolant by using a result of detecting the pressure of the pressure sensor, and controlling a temperature of the freezer depending on the estimated temperature of the saturated liquid coolant.
Disclosed are an arc extinguishing unit and an air circuit breaker comprising the same. An arc extinguishing unit according to an embodiment of the present disclosure includes a gassing material that generates molecules that extinguish an arc when heat generated by the arc is applied. Accordingly, the arc can be extinguished quickly. In addition, the arc extinguishing unit includes an outer support plate made of glass fiber and has a mechanically and thermally strong side plate part, so that burnout due to arc heat can be prevented.
09 - Scientific and electric apparatus and instruments
Goods & Services
Switchboards; electric power distribution board; electrical switch cabinets; electric power distribution machines; electrical transformers; uninterruptible electrical power supplies; inverters [electricity]; circuit closers; computer programs for conveying, distributing, transforming, storing, regulating or controlling electric current; programmable logic controllers.
67.
POWER CONDITIONING SYSTEM SUPPORTING HOT SWAPPING AND CONTROL METHOD OF POWER CONDITIONING SYSTEM
The present disclosure relates to a power conditioning system comprising: a converter including a plurality of inverters formed in the form of power electronics building blocks (PEBBs); and a system control unit for: controlling the plurality of inverters such that the plurality of inverters are driven independently of each other; receiving status information from each of the plurality of PEBBs and detecting a specific PEBB requiring maintenance according to the received status information; when the specific PEBB is detected, deactivating an inverter of the specific PEBB separately from the remaining PEBBs; and controlling the driving of the remaining PEBBs such that the power conditioning system continuously operates while the specific PEBB is inactive.
H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 1/36 - Means for starting or stopping converters
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
68.
BREAKER UNIT AND AIR CIRCUIT BREAKER COMPRISING SAME
The present disclosure relates to a circuit breaking unit and an air circuit breaker including the same, and provides a circuit breaking unit, including: a fixed contact; a movable contact moved in a direction toward or away from the fixed contact; a fixed contact terminal having the fixed contact disposed at a lower end thereof and extending upward; a low runner disposed extending upward from the fixed contact, one end thereof coupled to the fixed contact terminal, and the other end thereof spaced apart from the fixed contact terminal; and a magnet unit disposed between the low runner and the fixed contact terminal and forming a magnetic field between the fixed contact and the movable contact to guide a path of an arc generated when the fixed contact and the movable contact are separated, to the outside.
Disclosed are a wind power generation system including a semiconductor transformer module in which a power conversion device and a transformer are integrally formed, and a control method therefor, and more particularly, a wind power generation system including a semiconductor transformer module and a control method therefor, the system including a rotating unit that is rotatable by wind power and a nacelle coupled to one side of the rotating unit, wherein the nacelle includes a generator and a semiconductor transformer module for converting input power of the generator into power of a higher voltage.
The present invention relates to an embodiment of a semiconductor circuit breaker in which different types of current sensors are arranged in series and sense the same current, and whether a failure has occurred is determined on the basis of the sensing result of the different types of current sensors according to the state of current inflow.
G01R 31/327 - Testing of circuit interrupters, switches or circuit-breakers
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
G01R 19/30 - Measuring the maximum or the minimum value of current or voltage reached in a time interval
G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices
A switchboard having a cooling unit is provided. The switchboard having the cooling unit according to an embodiment of the present disclosure may include a housing having an inner space, an air inlet formed at one side thereof, and an air outlet formed at the other side thereof; a heat source disposed at one side of the inner space; a cooling unit for introducing an external air through the air inlet to the inside of the housing and discharging an air of the inner space through the air outlet to the outside of the housing; and a support plate disposed in the inner space and coupled to the cooling unit to allow the cooling unit to enter and exit the inner space.
Disclosed is a vacuum circuit breaker capable of measuring and monitoring the temperature of a specific point, the vacuum circuit breaker comprising a temperature detection sensor located adjacent to an electric conduction pole. The temperature detection sensor includes: a sensor body located adjacent to one side of a plate part of the electric conduction pole; a fixing terminal which can be brought into contact with a specific point of the electric conduction pole to measure the temperature of the specific point; and a connection line which is located inside an electric conduction pole terminal of the electric conduction pole, and has one end coupled to the sensor body and the other end coupled to the fixing terminal.
H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
73.
FEEDBACK CONTROL SYSTEM AND CONTROL METHOD THEREFOR
A feedback control system and a control method therefor are disclosed. A feedback control system according to one aspect of the present invention comprises: a fabrication unit that fabricates a product by reflecting a predetermined factor value; a test unit that is connected to the fabrication unit to receive the fabricated product and is configured to test the product by applying a test current to the product, and detect a result thereof; and a factor value adjustment unit that is configured to adjust the factor value by using the result detected by the test unit, wherein the result includes information about the time taken for the product to perform a predetermined action when the test current is applied, and wherein the factor value adjustment unit may be configured to compare an average value of the results of a plurality of the products with a predetermined boundary value, and adjust the factor value by using the result.
G05B 6/00 - Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral or differential
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
G06Q 10/06 - Resources, workflows, human or project managementEnterprise or organisation planningEnterprise or organisation modelling
An air circuit breaker is disclosed. An air circuit breaker according to one aspect of the present disclosure includes a cradle and a circuit breaker main body drawn-in and drawn-out to/from the cradle; and further includes: an interlock lever connected to an off button of the circuit breaker main body to move vertically; and a transfer device unit provided on the lower side of the cradle, wherein the transfer device unit can include a key interlock assembly, which is provided to be horizontally movable so that, in a state of having moved toward one side thereof, the movement of the interlock lever is restricted and, in a state of having moved toward the other side thereof, the movement of the interlock lever is permitted.
The present disclosure relates to a method for managing a parameter of a communication-based master-slave control system, and has an effect of storing and applying parameters of all slave devices in a non-volatile memory in a master device, thereby enabling the slave devices to be set-up in a position where an operator is difficult to access or dangerous by a parameter stored in the master device, thereby simplifying maintenance of the slave devices and ensuring safety of a user.
Disclosed are a circuit breaking unit and an air circuit breaker including the same. The present disclosure provides a circuit breaking unit, including: a fixed contact; a movable contact that is in contact with or spaced apart from the fixed contact; a fixed contact terminal having the fixed contact disposed at a lower end thereof and extending upward; a movable contact terminal on which the movable contact is disposed and configured such that the movable contact moves in a direction toward the fixed contact or in a direction away from the fixed contact; and a low runner disposed extending upward from the fixed contact, one end thereof coupled to the fixed contact terminal, and the other end thereof spaced apart from the fixed contact terminal, wherein a magnet unit or a U assembly is disposed between the low runner and the fixed contact terminal.
A vibration reduction unit and a transformer comprising same are disclosed. A vibration reduction unit according to one aspect of the present invention comprises: a rod part connected to the outside and extending in one direction; and a mass part coupled to the rod part so as to reduce vibration transmitted to the rod part, wherein the mass part may comprise: a mass member formed to have a predetermined mass; and a mass hollow part formed to penetrate the inside of the mass member and to which the rod part is coupled.
A vibration reduction unit and a transformer comprising same are disclosed. A vibration reduction unit, according to one aspect of the present invention, may comprise: a frame coupled to an external wall part; a partition member positioned inside the frame so as to divide a space formed inside the frame into a plurality of spaces; a resonance space forming one side space opposite to the wall part among the plurality of spaces partitioned by the partition member, and configured to reduce transmitted vibration or noise by means of a resonance phenomenon; and a transmission space forming the other side space facing the wall part among the plurality of spaces partitioned by the partition member; and a pipe member that is coupled through the partition member and allowing communication betwen the resonance space and the transmission space.
G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
F16F 15/02 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system
The present invention relates to a truck device of a circuit breaker and, more specifically, to a truck device of a circuit breaker, which improves operational consistency by reducing product processing errors. The truck device of a circuit breaker, according to an embodiment of the present invention, enables a case to be processed through sheet metal production, reducing processing errors, and thereby improving reliability and operational consistency.
The present disclosure relates to an electrical contact material that is a contact element that plays a role of blocking or allowing the flow of an electric circuit to pass through, and relates to an electrical contact composite material that satisfies the physical properties required to use as an electrical contact while reducing Ag content, and a method for manufacturing the same.
B22F 3/20 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor by extruding
B22F 3/24 - After-treatment of workpieces or articles
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
81.
BATTERY PROTECTION UNIT AND CONTROL METHOD FOR BATTERY PROTECTION UNIT
The present disclosure comprises: a solid-state circuit breaker, which is arranged between a battery system and a line and includes a semiconductor switch for providing an electrical connection or insulation between the battery system and the line according to the voltage applied to a gate terminal; an interrupter switch for providing a physical connection or separation between the solid-state circuit breaker and the line; and a rack battery management system which controls a gate driver applying the gate voltage, so as to provide insulation between the battery system and the line according to the result of sensing a current flowing between the battery system and the line, and which controls the interrupter switch to physically separate the solid-state circuit breaker from the line.
H02H 7/18 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteriesEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for accumulators
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
The present disclosure relates to a superconducting power supply system which may comprise: a superconducting cable connected between terminals; a recovery pipe forming a closed loop with the superconducting cable to recover a liquid coolant of the superconducting cable; a pump for providing a circulating pressure of the liquid coolant through the recovery pipe; a refrigerator for maintaining a temperature by cooling the liquid coolant; and a superconducting fault current limiter for maintaining the temperature of a superconducting element immersed in a supercooled liquid coolant by introducing the liquid coolant recovered through the recovery pipe.
The present disclosure relates to a vacuum circuit breaker in which lift hooks are accommodated, the circuit breaker having accommodated lift hooks mounted therein to allow a user to lift the lift hooks and use same whenever necessary, and accommodating the lift hooks after use, thereby improving user convenience. The circuit breaker according to the present invention may comprise: a circuit breaker main body; a plurality of fixing bolts mounted on and fixed to the circuit breaker main body; and the lift hooks, each having a plurality of moving holes into which the plurality of fixing bolts are inserted, and moving along the plurality of moving holes in a sliding manner.
B66C 1/10 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means
84.
ARC EXTINGUISHING UNIT AND AIR CIRCUIT BREAKER COMPRISING SAME
Disclosed are an arc extinguishing unit and an air circuit breaker comprising the same. The present disclosure provides an arc extinguishing unit, including: side plates spaced apart from each other and disposed to face each other; a plurality of grids disposed between the side plates, spaced apart from each other, and coupled to the side plates, respectively; and a grid cover located above the grid and covering the grid, wherein the grid includes a grid leg extending downward from both ends in the width direction so that an induced magnetic field can be formed by an arc generated when a fixed contact and a movable contact are spaced apart.
An electric motor drive device is provided. The electric motor drive device according to an embodiment of the present disclosure to which an operation module is connected, may comprise: a first case having a first surface formed therein; a second case having an inner accommodation space formed therein and having an outer portion to which the operation module is coupled; a first circuit board disposed at the first surface and having a first connector at one side thereof, a second circuit board disposed within the second case and having a second connector; and a first fixing member formed to protrude from the first surface.
Disclosed is a test device. The test device according to an embodiment of the present invention is operated by a power supply unit provided to be portable, and tests a sensor device using an alternating current of a high frequency. Therefore, the portability and operation reliability of the test device are improved, and the convenience of use can be improved since a separate wire member or the like for the operation of the test device need not be provided.
G01R 31/327 - Testing of circuit interrupters, switches or circuit-breakers
G01R 1/30 - Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
G01R 19/18 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
G01R 33/02 - Measuring direction or magnitude of magnetic fields or magnetic flux
87.
COOLING APPARATUS FOR SUPERCONDUCTING FAULT CURRENT LIMITER
The present disclosure relates to a cooling apparatus for a superconducting fault current limiter, and may comprise a first container for accommodating a super-cooled liquid coolant into which a superconducting element is immersed, a second container disposed in contact with an outer surface of the first container to expose a lower side of a lateral surface of the first container, and for accommodating a saturated liquid coolant, and a freezer inserted into the second container to condense the vaporized saturated liquid coolant.
An inverter device is provided. The inverter device according to an embodiment of the present disclosure may include: a main body housing in which an optional module is detachably installed and a first circuit module is disposed inside, and the inverter device may include an optional module installation portion; an opening portion formed in the optional module installation portion; and a connection member insertion portion disposed in the opening portion.
Disclosed are an arc chute and a load break switch including same. The arc chute can be installed so as to be in close contact with a curved frame part, and comprises: two cover parts which are arranged adjacent to the outer circumference of the frame part and spaced apart from each other, and overlap each other in the axial direction of the frame part; and an arc grid which is located between the two facing cover parts and coupled to each of the two cover parts. Each of the cover parts is configured such that one side in contact with the outer circumference of the frame part has a shape corresponding to the outer circumference of the frame part.
Disclosed are an arc extinguishing unit, a circuit breaking unit, and an air circuit breaker including the same. The present disclosure provides an arc extinguishing unit, a circuit breaking unit, and an air circuit breaker, including: side plates spaced apart from each other and disposed to face each other; a plurality of grids disposed between the side plates, spaced apart from each other, and coupled to the side plates, respectively; and a grid cover located above the grid and covering the grid, wherein the grid includes a grid leg extending downward to surround from both sides a protruding contact disposed to extend upward from a movable contact; and a first protective part formed to surround at least a portion of the grid leg at a lower portion of the grid leg.
An arc path forming unit and a direct current relay are disclosed. An arc path forming unit according to an embodiment of the present disclosure comprises: a magnet frame extending in a longitudinal direction; and a plurality of main magnet units disposed in the width direction of the magnet frame. The surfaces, which face each other, of the main magnet units have the same polarity. Therefore, magnetic fields that repel each other are generated in a space between the respective main magnet units. An electromagnetic force in the direction oriented toward the outside of the arc path forming unit is formed by means of the magnetic fields. Thus, a generated arc can move in the direction of the electromagnetic force so as to be stably extinguished. As a result, various members positioned in the center of the direct current relay are prevented from being damaged by the arc.
A lower module of a power electronic device includes a lower module included in a power electronic device that is divided into an upper module and a lower module by an intermediate plate and comprises a blower fan to introduce air into the inner space of the lower module; a plurality of capacitors installed in a suspended form on the intermediate plate and spaced apart from the blower fan; a heat sink having a plurality of heat dissipation fins through which heat generated from a heating component disposed on the upper module is conducted, and disposed adjacent to the capacitors to cool the plurality of heat dissipation fins by air moved from the plurality of capacitors; a DC reactor cooled by the air moved from the heat dissipation fins; and a discharge plate having a vent hole to discharge the air moved from the DC reactor to the outside.
An arc extinguishing device is disclosed. An arc extinguishing device according to one aspect of the present invention comprises: a grid part positioned near an external fixed contact point and a movable contact point so as to extinguish an arc generated as the fixed contact point and movable contact point are spaced apart; and an arc guide which is coupled to the grid part and generates a gas by reacting with the generated arc, wherein the grid part comprises: a grid body which forms the body of the grid part and is spaced apart from the fixed contact point and the movable contact point; a grid arm which is continuous with the grid body and extends towards the fixed contact point and the movable contact point; and an arc extension space which is formed so as to be partially surrounded by the grid body and the grid arm and has the movable contact point movably accommodated therein, the arc guide being arranged to partially surround the arc extension space by being coupled to the grid arm so as to produce a gas by means of the heat of the generated arc.
The present invention relates to a multichannel thermocouple measurement device, which may comprise: a thermocouple-thermistor pair; a terminal to which an analog signal of the thermocouple-thermistor pair is input; and a detection unit which converts the analog signal of the thermocouple-thermistor pair, input via the terminal, into a digital signal.
G01K 7/13 - Circuits for cold-junction compensation
G01K 1/02 - Means for indicating or recording specially adapted for thermometers
G01K 7/24 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
The present disclosure relates to a power device protection apparatus. A power device protection apparatus according to an embodiment of the present invention comprises: a comparator which is connected to a power device, and determines whether an overcurrent of the power device occurs; and a control unit which controls the comparator so as to change, by software, a overcurrent reference value for determining whether the overcurrent occurs, wherein the control unit receives temperature information of the power device, changes the overcurrent reference value on the basis of the temperature information, and performs the overcurrent reference value change according to the temperature information, on the basis of the characteristics of the power device.
H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current
H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
97.
MULTI-LEVEL CONVERTER-TYPE STATCOM SYSTEM AND OPERATION METHOD
A system including a multi-level converter including a plurality of valve sections including a plurality of sub modules, a plurality of VCU controllers connected to each of the plurality of valve sections, and an upper controller connected to the plurality of VCU controllers, wherein the VCU controller is configured to receive status information from each of the plurality of sub modules to transmit the state information to the upper controller, receive a specific sub module control command information from the upper controller, and transmit the control command information to a specific sub module among the plurality of sub modules.
Disclosed is an abnormal temperature detection system in which the amount of temperature information processing for an entire battery cell can be reduced and stability can be improved, the system comprising: a plurality of light guide plates which overlap at least a partial area of one side of a battery cell in one direction, are struck by electromagnetic waves radiated from the battery cell, and change the path of the electromagnetic waves; an image sensor which overlaps at least a partial area of each of the plurality of light guide plates in the one direction, detects the electromagnetic waves reflected from the light guide plates, and outputs temperature spectrum information for the one side of the battery cell on the basis of the detected electromagnetic waves; and a calculation unit which determines that an abnormal temperature has been detected in the battery cell if the temperature of the one side of the battery cell is outside a preset temperature range.
G01J 5/90 - Testing, inspecting or checking operation of radiation pyrometers
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A DC-DC converter can include a driving circuit comprising a switch part and a flying capacitor configured to convert an input voltage of an input side into an output voltage of an output side, and a protection circuit configured to be connected to the output side. The protection circuit can be configured to block the fault current flowing to the switch part by lowering the output voltage step by step when a fault occurs.
H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
100.
ELECTROMAGNETIC CONTACTOR CAPABLE OF EFFECTIVELY EXTINGUISHING ARC
An electromagnetic contactor is disclosed. An electromagnetic contactor according to an embodiment of the present disclosure includes an arc extinguishing unit. The air extinguishing unit is configured to surround a position where a fixed contactor and a movable contactor are in contact with each other. Accordingly, an arc generated between the fixed contactor and the movable contactor can extend toward a grid without arbitrarily flowing in an inner space of the electromagnetic contactor. Further included is an arc box unit according to an embodiment of the present disclosure. An arc outlet is formed passing through the arc box unit. An arc that is extinguished while passing through the grid can be discharged to the outside of the electromagnetic contactor through the arc outlet. Accordingly, the arc can be extinguished and discharged quickly and effectively. As a result, components of the electromagnetic contactor are not damaged by the generated arc.
