Abstract: A method for a first communication device transmitting data to a second communication device, according to one embodiment of the present invention, comprises the steps of: the first communication device generating a safety unique identifier by using a unique identifier of the first communication device and a unique identifier of the second communication device, in order to confirm the validity of connection between the first communication device and the second communication device; the first communication device calculating a data error detection code for detecting an error by using the safety unique identifier and the data; the first communication device generating a packet comprising the data and the data error detection code; and the first communication device transmitting the packet to the second communication device.

Abstract: The present disclosure relates to a vacuum interrupter that is installed within a vacuum circuit breaker to break a circuit. The vacuum interrupter includes an insulated container, a seal cup, a fixing electrode, a diaphragm, and a movable electrode. The insulated container is formed in a cylindrical form. The seal cup is installed on an upper end of the insulated container. The fixing electrode includes a fixing shaft and a fixing contact member installed on the other end of the fixing shaft. The diaphragm is installed on a lower end of the insulated container. The movable electrode includes a movable shaft having one end fixed to the diaphragm and the other end disposed within the insulated container and formed to be linearly movable, and a movable contact member installed on the other end of the movable shaft to be selectively contacted to the fixing contact member.

Abstract: A first support member and a second support member are provided in a rotation support device and a worm gear is rotated in a state that the second support member is inserted in the first support member, whereby the worm gear is prevented from being shaken through the first support member and the second support member and heat transmission to a housing due to rotation of the worm gear to damage the housing is prevented.

Abstract: Disclosed embodiments relate to power supply systems for supplying power. In some embodiments, a power supply system includes: a plurality of power conversion systems configured to receive and convert DC power from a power generator which generates power or an energy storage system which discharges stored energy; and a system controller configured to transmit a control instruction to control the plurality of power conversion systems based on a transmission protocol depending on an attribute of the control instruction.

Abstract: The present disclosure relates a terminal assembly for a vacuum contactor switch which is connected to a terminal of a cradle with electricity applicability to protect a power system by breaking circuits in the event of a dangerous situation such as a short circuit or an overcurrent. The terminal assembly includes a body portion, a connecting member, a contactor and a bush. The body portion is inserted into a terminal hole formed in the terminal of the cradle and provided with first fastening holes formed in opposite side surface thereof. The contactor is connected to one end of the body portion through a connecting member. The bush has a pair of pieces disposed to surround a periphery of the body portion with both ends of one of the pieces facing both ends of the other piece.

Abstract: Disclosed embodiments relate to a charger body of a charger for electric vehicles. In some embodiments, a charger body may include an internal line resistor disposed between the wall outlet and the first connector, one end of internal line resistor being connected to the wall outlet and the other end of the internal line resistor being connected to the first connector; a switch, one end of the switch being connected to the first connector and the other end of the switch being connected to one end of the internal line resistor; relays, one end of each of the relays being connected to the first connector and the switch and the other end of each of the relays being connected to the second connector; and a controller controlling operation of the switch and the relays depending on a predetermined operation mode.

Abstract: The 3-way disconnector and an earth switch for a gas insulated switchgear includes: a movable portion including a disconnector movable portion and an earth switch movable portion; a disconnector mover and an earth switch mover installed in the disconnector movable portion and the earth switch movable portion so as to be linearly movable; a driving lever rotatably installed between the disconnector mover and the earth switch mover; and a first lever and a second lever rotated by receiving a rotational force of the driving lever, and configured to move the disconnector mover and the earth switch mover, respectively, wherein a driver is protruded at one side of the driving lever, and a driving pin is provided at an end of the driver, and wherein the driving pin is configured to selectively move one of the first and second levers.

Abstract: An A/D converter includes: an input unit configured to receive an analog input signal, a preprocessing unit configured to convert the input signal into a digital preprocessing signal based on a dynamic range of the input signal and a first resolution corresponding to a predetermined first bit number, a first conversion unit configured to convert the preprocessing signal into a first output signal based on a second resolution corresponding to a second bit number smaller than the first bit number, and a second conversion unit configured to convert the preprocessing signal into a second output signal based on a third resolution corresponding to a third bit number which is smaller than the first bit number and is different from the second bit number.

Abstract: A controller for confirming the contact status of a latch relay embedded in an electric power meter according to the invention includes a microcomputer unit that is electrically connected to the latch relay for reading and providing the contact switching status information of the latch relay during a power failure, and read the contact switching status information stored during the power failure when a power recovers, and configured to output an opening control signal to the latch relay when the read contact switching status is an open state, and configured to output a closing control signal to the latch relay when the read contact switching status is a closed state; and a non-volatile memory that stores the contact switching status information of the latch relay provided by the microcomputer unit or provides the contact switching status information of the latch relay to the microcomputer unit during a power failure.

Abstract: An output adjustment device of an analog output module may include: a microprocessor unit (MPU) performing an arithmetic operation on a digital signal, an analog output module including an analog signal output unit receiving a signal output from the MPU to output an analog signal, and an output signal adjustment unit outputting a control signal for controlling a magnitude or amplitude of the output analog signal to the MPU.

Abstract: In the present disclosure, a link part is connected to a worm wheel rotated according to rotation of a worm gear and a movement member is connected to the link part, whereby a rotational motion of the worm wheel is changed to a translational motion in a horizontal direction through the link part and the movement member. Thus, although an indicator is positioned on an upper side of a handle insertion part, a position according to movement of a circuit breaker body may be easily indicated, while using a simple structure.

Abstract: A reactive power compensator includes a plurality of phase clusters each including a plurality of cells, and a controller configured to control the plurality of phase clusters. When an energy error is generated in each of the plurality of phase clusters, the controller performs control to compensate for the energy error by generating an offset signal having a zero sequence component based on an error energy value of each of the plurality of phase clusters.

Abstract: A redundant control device of a high voltage direct current (HVDC) transmission system is provided. The redundant control device includes a first system and a second system that performs a function corresponding to that of the first system; and a first change over logic (COL) and a second COL that determine whether to switch between the first system and the system, wherein there are optical communication modules between the first system and the first COL, between the first COL and the second COL, and between the second system and the second COL to transmit and receive data, and the first COL and the second COL includes a monitoring control unit that checks a connection or wiring state of the optical communication modules and validity of transmission data.

Abstract: A fuse case and a case cover of a vacuum contactor including a truck, a main circuit unit, and a front cover covering a front side of the main circuit unit include a fuse connected to an upper terminal of the main circuit unit and blowing, when a fault current is generated in a circuit, to break the circuit, a fuse case opened in an upper side, accommodating the fuse, and having an insertion coupling part formed on a side surface thereof, and a case cover coupled to an upper side of the fuse case, coupled to the insertion coupling part in an insertion coupling manner, and covering a rear end portion of the fuse, wherein the case cover includes an upper surface portion and side surface portions, and the side surface portions include a first side surface portion and a second side surface portion.

Abstract: The present disclosure relates to a hardware protocol stack, and more particularly, to a hardware protocol stack to which a user-defined protocol is applicable. The present disclosure compares header information stored in a register unit with header information of a received frame, and determines a processing of the received frame on the basis of a comparison result. Also, according to a determined frame process method, data of the received frame is processed based on a logic according to the header information, it is stored at a designated position, or a response frame is transmitted.

Abstract: Disclosed embodiments relate to a communications interface apparatus that may include: a physical layer interface configured to receive first data from an external device and output the received first data; a relay configured to create first transmit data based on processing condition information of received data; and a medium control access (MAC) layer interface configured to receive the receive data output via the physical layer interface, transmit the received data to an upper layer, and receive second data in response to the transmitted data. The relay may store the processing condition information corresponding to the data received from the external device, and create the first transmit data based on the processing condition information corresponding to the received data when the received data is output via the physical layer interface.

Abstract: Disclosed is a direct current (DC) circuit breaker including a first line in which a first high-speed switch and a power semiconductor switch are connected in series; a second line in which a plurality of second high-speed switches, a plurality of pairs of a first non-linear resistor and a power fuse connected in parallel, and a resistor are connected in series; and a third line including a second non-linear resistor. The first line, the second line, and the third line are connected in parallel.

Abstract: The present disclosure relates to an apparatus for recognizing a pulse signal, and more particularly, to an apparatus for recognizing a pulse signal, which maintains the pulse signal being input for a scan time until an end time point of the scan time, and stores the pulse signal in a pulse signal storage area as pulse input data. The apparatus for recognizing a pulse signal according to one embodiment of the present disclosure includes a signal maintaining unit configured to maintain and output the pulse signal, which is input for the scan time, as a pulse maintaining signal; a signal transmission unit configured to receive the pulse maintaining signal from the signal maintaining unit and transmit the input pulse maintaining signal; and a control unit configured to output the transmission control signal to the signal transmission unit to receive and store the received pulse maintaining signal.

Abstract: A power management system is provided. The power management system includes a battery energy storage system (BESS) configured to obtain a state of charge (SOC) information, the state of charge (SOC) information including a charge state of the battery and a charging control unit configured to control charging or discharging of the BESS. The charging control unit is configured to compare a desired SOC and a measured SOC based on the obtained SOC information, and regulate a charging power value of a battery and a discharging power of the battery to match with the desired SOC, when as a result of comparison, the desired SOC and the measured SOC are different from each other.

Abstract: Disclosed herein is a method for displaying a monitoring viewer in an HMI system. The method includes, upon receiving a request to display a monitoring viewer from a user, acquiring screen data to be displayed in the monitoring viewer; displaying a control area of the monitoring viewer on a display; displaying a view area of the monitoring viewer on the display; and displaying a monitoring screen in the view area by using the screen data. The view area includes one or more taps. Monitoring performance and efficiency of the HMI system can be increased.