Abstract: A disconnector and a method for manufacturing the disconnector are disclosed in the present application. The disconnector includes conductive arms pivotally coupled with each other, and finger contacts. The finger contacts have two opposite ends and an elastic portion between the two opposite ends, each of the finger contacts being fixed to the respective conductive arm by fasteners at the two opposite ends such that the elastic portion presses against the conductive arm. In response to the conductive arms being pivoted toward each other and clamping an electrical contact hanged at a bus-bar above the disconnector, the conductive arms are electrically coupled with the electrical contact via the respective finger contacts. A method of manufacturing a disconnector is also disclosed.

Abstract: A spring arrangement for operating a high and medium voltage circuit breaker comprising a cylindrical housing having a main axis, an actuation rod, a coil spring arranged in the cylindrical housing, coupled with the rod, and a coupling arrangement coupling an end of the spring with an end of the rod, wherein the coupling arrangement comprises an articulation for guiding an end of the rod in rotation with respect to the second end of the spring around a second axis perpendicular to said main axis and comprises sliding means for the translational guiding of the second end of the rod along said main axis.

Abstract: A door latching system provides an arc resistant door for a power electronics cabinet. The door latching system includes a six point latch to secure the door in place against the frame of the cabinet. The door latching system includes two vertical linkages coupled to a door handle mechanism, the door handle mechanism being able to impart a vertical motion to the vertical linkages as the handle is turned. The latching system allows for this vertical motion to then become horizontal motion for closing several latches between the vertical frame of the cabinet and the door.

Abstract: The invention relates to the use of a gas as a medium for electrically isolating and/or extinguishing electric arcs, said gas comprising a hexafluorobutene. The invention also relates to an electric device comprising a sealed chamber inside which electric components and said gas are located.

Abstract: An electrical contact for a vacuum switching apparatus. The vacuum switching apparatus includes a second electrical contact. The electrical contact includes a hub portion and a plurality of petal portions each extending from the hub portion. Each of the plurality of petal portions has a first surface and a second surface. The first surface faces in a first direction and is structured to engage the second electrical contact. The second surface faces in a second direction generally opposite the first direction. At least one of the plurality of petal portions further has a grooved portion extending inwardly from the second surface toward the first surface.

Abstract: A particle extraction system for an electrical interrupter is disclosed in the present application. The particle extraction system includes a support bay configured to hold an electrical interrupter in position during a particle extraction event. An actuator system is operable for cycling the interrupter to dislodge and release foreign particles internal to the interrupter. A fluid source and pumping system is in fluid communication with at least one internal flowpath within the interrupter to entrain and transport the released particle from the interrupter. A vacuum slot is operable for receiving a fluid flow with entrained particles and transporting the particles to a particle capture device.

Abstract: Circuit breakers are configured with line terminal geometry that drives the current from a terminal input in a direction that can reduce electromagnetic forces and that can also or alternatively include an arc chute assembly that can reduce repulsive electromagnetic forces to improve the operating level of withstand current (Icw).

Abstract: In a gas circuit breaker, arc-extinguishing gas is filled in a container. A movable portion housed in the container includes a movable arc contact. The movable portion includes a pressure accumulator that increases pressure of an arc-extinguishing gas. An opposing portion housed in the container includes an opposing arc contact, an exhaust pipe, and a shielding portion. The shielding portion includes a first shielding wall intersecting with an axial direction of the pipe and a second shielding wall having a cylindrical shape extending from the first shielding wall toward the movable portion along the axial direction of the pipe. The second shielding wall includes through-holes. Lengths of the respective through-holes along the axial direction are from 18 millimeter's to 55 millimeters inclusive. An arc-extinguishing gas whose pressure has been increased in the pressure accumulator flows into a space to extinguish arc discharge, and flows into the second shielding wall.

Abstract: An improved electrical contact alloy, useful for example, in vacuum interrupters used in vacuum contactors is provided. The contact alloy according to the disclosed concept comprises copper particles and chromium particles present in a ratio of copper to chromium of 2:3 to 20:1. The electrical contact alloy also comprises particles of a carbide, which reduces the weld break strength of the electrical contact alloy without reducing its interruption performance.

Abstract: Various embodiments may include a coupling element for an electrical switching device comprising: a first switching contact at a first end of a winding body; a second switching contact; and a rotating body through which the winding body extends. The rotating body rotates on the winding body and the winding body translates along its longitudinal axis. A cord is arranged on each of the two sides of the rotating body between the rotating body and the winding body so that winding and unwinding of the cord is caused by opposite rotational movements of the rotating body driving a translational movement of the winding body. The rotating body is coupled to two springs so that a spring force always acts on the rotating body in both directions of rotation. A lock blocks the rotating body in at least two extreme positions of the translational movement of the winding body.

Abstract: A gas circuit breaker that includes: a first tank filled with an insulating gas; a fixed contact provided inside the first tank; a movable contact provided inside the first tank; a nozzle that ejects the insulating gas toward the fixed contact when the movable contact moves in a first direction; a cylindrical body that guides the gas ejected from the nozzle in a second direction; and a second tank connected to the first tank in the second direction. The movable contact is movable between a position in contact with the fixed contact and a position separated from the fixed contact. The first direction is a direction in which the movable contact moves from the position in contact with the fixed contact to the position separated from the fixed contact. The second direction is a direction opposite to the first direction.

Abstract: This electric arc extinguishing device for a three-phase power distribution system comprises at least one metal strip (6) and at least one insulating support (7) on which the strip is mounted and comprising means for attaching the device between current distribution bars extending from side to side, the support comprising lateral faces (11) bearing against said bars, the strip being mounted on the support in such a way as to be internally offset relative to said lateral faces.

Abstract: The present invention discloses an opposite arc isolation device of a high voltage direct current relay, including a movable contact assembly and a fixed contact assembly, wherein the movable contact assembly includes a movable spring plate and a left movable contact and a right movable contact fixed at left and right ends of the movable spring plate; the fixed contact assembly includes a left fixed contact corresponding to the left movable contact and a right fixed contact corresponding to the right movable contact; an arc isolation member made of insulating material is provided between the left movable contact and the right fixed contact; the front-to-rear dimension L of the arc isolation member is greater than the front-to-rear width M of a joint surface of the movable contacts with the fixed contacts; and, the arc isolation member has a height H that enables the isolation of opposite arcs between the two sets of movable and fixed contacts.

Abstract: A switch includes: switch blades for multiple phases which perform three-position switching among ON, OFF, and ground, using a rotation shaft; and phase-to-phase connection mechanisms which support the switch blades for the phases so as to be insulated among the phases and against the ground, and which connect the switch blades for the phases and cause them to cooperate with each other. The phase-to-phase connection mechanisms include fitting couplings made of an insulating material and each composed of a large-diameter endless frame body and a small-diameter endless frame body which are fitted to each other. The fitting couplings are arranged on the same axial line.

Abstract: A multifunctional capacitive-type sleeve with a vacuum arc-extinguishing chamber comprises a sleeve insulation core covered outside the vacuum arc-extinguishing chamber, wherein one ends of two connection terminals are respectively led out from the two ends of the sleeve insulation core, and the other ends of the two connection terminals can be contacted and separated in the vacuum arc-extinguishing chamber to switch on and off a circuit. The multifunctional capacitive-type sleeve with a vacuum arc-extinguishing chamber according to the present invention not only has the function of a sleeve, but also has the function of a disconnector, the sleeve insulation core is internally provided with a vacuum arc-extinguishing chamber to switch on and off the circuit, which can simplify structures of a high-voltage switch and a control cabinet, reduce the device volume, and decrease the device cost.

Abstract: The invention disclosed is an arc protection system for an electrical switch mounted in an electrical cabinet. The system includes an arc suppression housing pivotally mounted in the electrical cabinet. The housing comprises an arc extinguishing chamber having an opening configured to face separable contacts of an electrical switch mounted in the cabinet when the housing has been rotated about the pivot into a closed position. The arc extinguishing chamber is configured to extinguish an electric arc produced by opening the separable contacts when the housing is in the closed position. The system further includes an interference mechanism mounted on the arc suppression housing. The interference mechanism is configured to prevent closure of an access door of the electrical cabinet, when the housing has been rotated about the pivot into an open position configured to enable operator access to the separable contacts of the electrical switch.

Abstract: Disclosed is a switching device comprising a vacuum tube and an adjustable drive for opening and closing the contacts of the switching device. The switching device also comprises a sensor for detecting physical properties of the operating site of the switching device. The detected physical property adapts the adjustable drive for opening and closing the contacts to the operating site.

Abstract: A switching system, in particular of an on-board electrical system of a motor vehicle having a first disc which has a first, a second, a third, and a fourth stationary contact. The second and the third stationary contact, are electrically contacted by a first contact bar of the first disc. The switching system also has a second disc which has a first, a second, a third, and a fourth movable contact. The first and the second movable contact are electrically contacted by a second contact bar of the second disc, and the third and the fourth movable contact are electrically contacted by a third contact bar of the second disc. The second disc is rotationally mounted about a rotational axis relative to the first disc, wherein all the contacts are electrically connected in series in an angular position. A circuit breaker is also provided that includes a switching system.

Abstract: A switching contact, of a vacuum interrupter including support bodies, includes an additional support body which has the shape of a truncated cone or of a hollow truncated cone or of a partially hollow truncated cone. The additional support body is offset from a first location or region on the bottom of the contact carrier, located in the notional extension of the contact rod and inside the contact carrier, to a second location or region, located on the side of the contact plate facing the contact carrier and on the outer edge of the contact plate in relation to the first region.

Abstract: The present invention provides an arc extinguishing structure for direct current circuit breaker, which comprises a first casing, a second casing, an arc extinguishing chamber, a gas generating hood, a movable contactor and a stationary contactor, with a plurality of arc extinguishing grid-plates installed at an upper part inside the arc extinguishing chamber and having lower slots which are open towards an accommodation space and have a size that gradually decreases along a direction from the second casing to the first casing, wherein the first casing has a first extension plate disposed against the first gas generating plate and a second extension plate disposed against the second gas generating plate, the first extension plate and the second extension plate are arranged to extend into the arc extinguishing chamber so as to form a spacing communicated with the accommodation space and disposed opposite to the arc extinguishing grid-plates.