The present disclosure relates to a direct current relay, and more specifically, to a direct current relay having a movable assembly with improved contact pressure. The direct current relay according to an embodiment of the present disclosure comprises a pair of fixed contacts, and a movable contact which is moved vertically by an electromagnetic force to contact or be separated from the pair of fixed contacts, wherein an upper yoke and a lower yoke are respectively provided on the upper and lower portions of the movable contact, a contact spring is provided on the lower portion of the lower yoke, and the lower yoke is pressed by the contact spring to move the movable contact.

A circuit interrupter includes: a first fixed terminal including a first fixed contact; a movable contactor which is formed as a separate part from the first fixed terminal and includes a first movable contact; a holding unit configured to hold the movable contactor so that the first movable contact is connected to the first fixed contact; and a squib configured to generate gas by combustion. In the circuit interrupter, pressure of the gas generated by the squib causes movement of the movable contactor in a direction away from the first fixed terminal so that the first movable contact is separated from the first fixed contact.

A medium voltage switching pole includes: a fixed contact of a vacuum interrupter; a movable contact of the vacuum interrupter; a piston; at least one electrical contact; a first terminal; and a second terminal. The fixed contact is fixedly connected to the first terminal. The movable contact is fixedly connected to the piston. The piston moves within the second terminal along an axis. The at least one electrical contact makes an electrical connection between the piston and the second terminal. An outer surface of the piston and an inner surface of the second terminal are arranged such that: when in an open configuration the fixed contact and movable contact are separated, at least one first radial line perpendicular to the axis extends through locations of the at least one electrical contact, and a first distance along the at least one first radial line extends from the outer surface.

An electrical connection device is connected between a main body and a draw-out device of an electrical appliance having a draw-out structure. The electrical connection device includes: a draw-out device connection assembly being fixed on the draw-out device and electrically connected to inlet and outlet ends of the draw-out device; a main body connection assembly including contact pieces with a clamping mechanism, wherein the clamping mechanism makes the contact pieces close to and clamp main body busbars; and a flexible assembly connecting the draw-out device connection assembly and the main body connection assembly to form a conductive path. The contact pieces of the main body connection assembly are offset by adapting to the position deviation of the main body busbars. A linked electrical connection assembly is formed by the described electrical connection devices and an electrical appliance using the described electrical connection devices or the electrical connection assembly.

An electrical connection device is connected between a main body and a draw-out device of an electrical appliance having a draw-out structure. The electrical connection device includes: a draw-out device connection assembly being fixed on the draw-out device and electrically connected to inlet and outlet ends of the draw-out device; a main body connection assembly including contact pieces with a clamping mechanism, wherein the clamping mechanism makes the contact pieces close to and clamp main body busbars; and a flexible assembly connecting the draw-out device connection assembly and the main body connection assembly to form a conductive path. The contact pieces of the main body connection assembly are offset by adapting to the position deviation of the main body busbars. A linked electrical connection assembly is formed by the described electrical connection devices and an electrical appliance using the described electrical connection devices or the electrical connection assembly.

An electrical switch including a frame, an operating shaft, and a bridge member movable in a depth direction relative to the frame by rotation of the operating shaft, wherein the depth direction is parallel with a rotation axis of the operating shaft, and wherein the operating shaft is adapted to exert a first opening force to the bridge member during an opening event. The electrical switch includes an anti-tilting member movable in a lateral direction relative to the frame by rotation of the operating shaft, the lateral direction being perpendicular to the depth direction, wherein the anti-tilting member is adapted to exert a second opening force to the bridge member during the opening event, the second opening force being parallel to the first opening force and spaced apart from it in the lateral direction.

An electrical switch including a frame, an operating shaft, and a bridge member movable in a depth direction relative to the frame by rotation of the operating shaft, wherein the depth direction is parallel with a rotation axis of the operating shaft, and wherein the operating shaft is adapted to exert a first opening force to the bridge member during an opening event. The electrical switch includes an anti-tilting member movable in a lateral direction relative to the frame by rotation of the operating shaft, the lateral direction being perpendicular to the depth direction, wherein the anti-tilting member is adapted to exert a second opening force to the bridge member during the opening event, the second opening force being parallel to the first opening force and spaced apart from it in the lateral direction.

A system for controlling a high-voltage relay of an eco-friendly vehicle includes a high-voltage battery, a plurality of driving devices driven with power supplied from the high-voltage battery, a relay unit including the high-voltage relay and a relay coil, the high-voltage relay being driven based on an amount of current flowing through the relay coil to interconnect the high-voltage battery and the driving devices, a load determiner for determining whether a conduction current load of the high-voltage relay is high or low, and a controller for changing the amount of current flowing through the relay coil based on a result of the determination of the load determiner.

This invention presents an electronically configurable architecture where the plurality of photovoltaic panels can be connected to deliver the maximum power output. This architecture provides maximum power point to the maximum number of photovoltaic panels by connecting them in parallel. Under-rated panels are dynamically coupled with over-rated or maximum-rated panels in a series-connected architecture to utilize the under rated power in the final delivery. Notable efficiency improvements may be observed in contrast to the prevailing optimization with minimum power drop out architecture. The architectural modifications are proposed with bi-stable electromagnetic changeover contacts to minimize the power dissipation in control side. Moreover the rearrangement in connection architecture is proposed to be communicated on instance and regular basis through SMS and SPI protocol for easy fault diagnosis by the service personnel from the proposed data mining firmware.

A busway system including a first electrical busway section, a second electrical busway section, the first and the second electrical busway sections being offset from each other, a busway joint for coupling the first and the second electrical busway sections. The busway joint including a plurality of busbars, a plurality of splice plates electrically coupled to the plurality of busbars, the plurality of splice plates and the plurality of busbars configured to electrically couple the first and the second electrical busway sections, and a pivot shaft passing through the plurality of busbars and splice plates.