99results about "Switches with unconnected briding contacts" patented technology

A loadbreak connector system and methods for visible break include first and second mating connector assemblies configured to make or break an electrical connection under energized circuit conditions, the first and second mating connectors selectively postionable relative to one another. One of the first and second mating connectors includes an arc follower, and the other of the first and second mating connectors includes an arc interrupter. The arc interrupter is configured to receive the arc follower, and the first and second meting connectors are positionable in an disconnected position wherein the arc follower remains engaged to and is located within the arc interrupter. Arc energy is distributed among multiple locations to reduce arc intensity.

For providing a power-circuit breaking device, which can easily mount a fuse and has a small number of component and a simple structure, the power-circuit breaking device includes a first connector housing having a pair of circuit terminals connected with a power circuit, and a second connector housing closing the power circuit by fitting with the first connector housing. The second connector housing includes a fuse having a pair of terminals to be connected with the pair of circuit terminals, a housing having a lock arm engaged with a cutout provided at the terminal and a cover an entry opening of a receiving section of the housing. The cover includes a limiter limiting the lock arm to move to disengaging the terminal.

The circuit breaking device 10 includes a plug box 20 including circuit terminals 21 and 22 respectively connected to the respective open ends of two electric circuits, and a plug main body 30 including short-circuit terminals 31, 32 and disposed in such a manner that it can be shifted by a given amount with respect to the plug box 20; in particular, the plug main body 30 is structured such that not only it can bring the short-circuit terminals 31 and 32 into fit with the circuit terminals 21 and 22 of the plug box 20 to thereby close the two electric circuits, but also it can remove the short-circuit terminals 31 and 32 from the circuit terminals 21 and 22 to thereby open the two electric circuits and thus cut off the circuit currents thereof. The plug main body 30 is allowed to shift with respect to the plug box 20 between the actually securing position where the short-circuit terminals 31, 32 can be fitted with the circuit terminals 21, 22 and the temporarily securing position where the short-circuit terminals 31, 32 can be removed from the circuit terminals 21, 22.

A loadbreak connector system and methods for visible break include first and second mating connector assemblies configured to make or break an electrical connection under energized circuit conditions, the first and second mating connectors selectively postionable relative to one another. One of the first and second mating connectors includes an arc follower, and the other of the first and second mating connectors includes an arc interrupter. The arc interrupter is configured to receive the arc follower, and the first and second meting connectors are positionable in an disconnected position wherein the arc follower remains engaged to and is located within the arc interrupter. Arc energy is distributed among multiple locations to reduce arc intensity.

The invention discloses an intelligent high-pressure dual power supply shift switch, comprising a gas seal box, three primary power supply terminals disposed on the gas seal box, three standby power supply terminals and three load terminals, and a power supply shift mechanism set in the gas seal box; characterized that: the switch also comprises a three-phase vacuum breaker device, the three-phase vacuum breaker device comprises three vacuum interrupters, three moving contacts, three static contact and a operation mechanism; each of the moving contact / static contact is connected with the corresponding primary power supply terminal / standby power supply terminal via the power supply shift mechanism, each of the static contact / moving contact is connected with a corresponding load terminal. The invention has the advantages of simple structure, low costs, suitable for eliminating potential security hazard effectively.

A contact assembly comprising a plurality of pairs of spaced apart fixed contacts supported in an electrically insulating body, an actuator displaceable relative to the body between first and second positions, and a plurality of movable contacts mounted on the actuator. Each movable contact is positioned on the actuator so as to interconnect the contacts of one of the pairs of fixed contacts only when the actuator is in one of the first and second positions. Each fixed contact has two limbs defining an L-shape, one limb defining a single leg which extends through an aperture formed in a partition defined by the body and the other limb extending to one side of the leg to define a head supporting a terminal for gripping a wire. Each movable contact is displaceable into contact with the leg of each of the respective pairs of fixed contacts on the side of the leg from which the head extends and on the side of the partition remote from the head.

The three-position, gas-insulated, metal-clad electrical switch inside a metal casing comprises first and second break contacts, a fixed grounding contact, and a switching element that is movable in an axial direction to interconnect said break contacts. The first and second break contacts and said fixed grounding contact are superposed in said axial direction, and the switching element is moved by means of a drive rod which passes through the fixed grounding contact, thereby enabling said switching element to occupy each of the three switching positions including a grounding position in which it connects the first break contact to the fixed grounding contact.

A mechanical operation counting apparatus for counting the number of times a circuit of an air circuit breaker is closed, while performing a closing or opening operation of a switching unit, is provided with a driving apparatus to prevent an impact caused by a momentarily large force applied by a closing spring or opening spring, including: a cam having an outer circumferential surface formed with a cam profile with a varying radius of curvature, a working lever having one end portion contacting the cam surface and pivoting according to a contact position thereof on the cam surface, a counter operating lever having one end contacting the working lever and pivoted by engagement with the working lever, and the counter being driven by the pivoting of the counter operating lever and counting and displaying the number of times the circuit of the air circuit breaker is closed.

A power-circuit breaking device, which can easily mount a fuse and has a small number of component and a simple structure. The power-circuit breaking device includes a first connector housing having a pair of circuit terminals connected with a power circuit, and a second connector housing closing the power circuit by fitting with the first connector housing. The second connector housing includes a fuse having a pair of terminals to be connected with the pair of circuit terminals, a housing having a lock arm engaged with a cutout provided at the terminal and a cover an entry opening of a receiving section of the housing. The cover includes a limiter limiting the lock arm to move to disengaging the terminal.

A remotely controlled, motorized drive system for a disconnector used in switchgear. An operator pushes a button on a remote control, which signals a receiver in the disconnector to engage a motor that is coupled to a drive shaft. The drive shaft causes movable contacts of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts in the switchgear that are connected to the line supply and to the circuit breaker that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.

The invention discloses a + / -1100kV high-voltage direct current disconnecting switch, which comprises two static side strut insulators with top parts being provided with static contacts, and a middle strut insulator arranged between the two static side strut insulators, wherein an operation insulator is arranged at a central position in the middle strut insulator; an electric conduction knife switch is arranged on an upper end of the operation insulator; and moving contacts matched with the static contacts are arranged on two ends of the electric conduction knife switch. The direct current disconnecting switch is of a three-column horizontal opening dual-fracture structure, and the electric conduction knife switch is arranged on the operation insulator, so that the electric conduction knife switch is rotated around a center of the middle strut insulator, and the aim that switching-on is formed when two ends of the electric conduction knife switch enter into the static contacts on upper parts of the struts on two ends, and switching-off is formed when the two ends of the electric conduction knife switch are separated from inner parts of the static contacts on the two ends and are rotated at a certain angle is realized. The high-voltage direct current disconnecting switch can meet the requirements on insulation capacity, flow capacity, bore terminal tensile force, standards of wireless interference, and usability.

The invention discloses a combination right-angle isolating switch with a rapid ground switch, comprising a right-angle isolating switch part and a rapid ground switch part; the switch is characterized in that: the rapid ground switch part is combined with the right-angle isolating switch part in a same shell through the flange interface at one level side of the isolating switch shell, and connects the fixed contact of the rapid ground switch with a fixed contact of an isolating switch through a conductor; the conductor is vertically arranged on the flanged interface on upper and lower ends of the isolating switch shell. The invention compositely places the rapid ground switch at the side end of the GR type isolating switch shell, thereby enlarging the interface of the GR type isolating switch, so as to cause the connecting mode of the GR type isolating switch to be more flexible, has more plenty and diversified structure arrangement; because a base type insulator is removed, which saves material cost and has cabinet volume.

A power supply apparatus is equipped an assembled battery, a case that accommodates the assembled battery, and a connecting mechanism that is attached to an outside of the case, wherein the connecting mechanism connects two selected cells. The connecting mechanism includes a fixation portion and a disconnection portion. The fixation portion includes a first conductive plate that is directly connected to a positive electrode terminal of one of the two selected cells, and a second conductive plate that is directly connected to a negative electrode terminal of the other of the two selected cells, wherein the fixation portion is attached to the case. The disconnection portion is removable from the fixation portion, electrically connects the first conductive plate to the second conductive plate when attached to the fixation portion, and electrically disconnects the first conductive plate from the second conductive plate when removed from the fixation portion.

A double break disconnect switch with a novel drive mechanism that swings the blade open and closed in a conventional manner but the rotation with respect to its longitudinal axis is unique. This mechanism uses a unique cam to rotate the blade about a hinge axis. The blade bearings are of very small diameter to reduce friction and are offset from the blade center of gravity so as to use the blade's weight to keep the blade in disengagement with the break jaw contacts when the switch is opened. The blade bearings are not around the diameter of the blade, the friction does not increase as current rating increases. A camming mechanism is profiled to give maximum rotational torque to the blade as it compresses the contact fingers as the switch closes to its final position.

The invention relates to a switch, in particular to a high voltage automatic change-over switch comprising a bracket and a control circuit board. Four high voltage contacts are respectively installed on two opposite faceplates on a U-shape insulation support of the bracket; a motor is positioned on the bracket; the output axle of the motor extends inside the U-shape insulation support; two rotors coordinates with the high voltage contacts are respectively at the end section of the motor; a position contact block is positioned on the output axle of the motor; two position limiting switches that coordinate with the position contact block are positioned on the bracket. The beneficial effects of the invention are: capable of resisting the voltage of more than 50KV, allow the passing of pulse current of no less than 500A, excellent contact performance, high stability and capable of automatic change-over. Therefore, the invention, which is able to realize the automatic change-over of power source high voltage in an accelerator system, ensures accelerator to acquire electron flow with different energies, enlarges the application scope of accelerator, thus bringing important significance to the upgrade of industrial non-destructive inspection, customs container detection system and high energy CT system.

The invention discloses a three-position isolating-grounding switch. The three-position isolating-grounding switch comprises a moving end conductor, an grounding insulator, a grounding contact, a sliding contact, a static end conductor, a static end contact, a casing and a transmission rotary shaft. The grounding contact, the sliding contact and the static end contact are arranged on the same axis in sequence. The grounding contact is installed on the casing through the grounding insulator, the static end contact is connected with the static end conductor, the sliding contact is connected with the moving end conductor, and the static end conductor and the moving end conductor are respectively fixed on the casing and are insulated. A rack is embedded into the sliding contact, the transmission rotary shaft is provided with a gear matched with the rack, can drive the sliding contact to perform straight-line reciprocating motion along the axis, enable the sliding contact to be connected with the grounding contact or the static end contact, and can be not contacted with the grounding contact and the static end contact at the middle position. The three-position isolating-grounding switch achieves mechanical interlocking and improves the reliability.

A floating contact assembly is provided. The floating contact assembly includes a substantially rigid first conductive member, a flexible conductive shunt, and a substantially rigid second conductive member. The flexible conductive shunt is coupled to, and is in electrical communication with, the first conductive member. The second conductive member is coupled to, and is in electrical communication with, the flexible conductive shunt. In this configuration, the second conductive member “floats” within the first conductive member.

The invention disclose a 1100kV ultra-high voltage isolating switch for opening and closing switching current of a high-parameter bus, which comprises a mounting base, insulators, a left fixed contact, a main knife switch, a right fixed contact and an operating mechanism, wherein a rotating bearing seat is arranged in the middle of the mounting base, fixed support saddles are arranged at two endsof the mounting base, the insulators are three-column insulators, the lower ends of the insulators are respectively fixed on the rotating bearing seat of the mounting base and the two fixed support saddles, the main knife switch is mounted on the middle insulator, the left fixed contact and the right fixed contact are respectively mounted at the insulators at two ends, and the operating mechanismfor driving the middle insulator to rotate is fixed below the mounting base. The 1100kV ultra-high voltage isolating switch has simple and compact structure, low cost, particularly strong capacity for opening and closing the switching current of the bus, high rated current parameter, excellent thermal stability, excellent dynamic stability and conductivity, high insulation performance, strong radio interference suppression capacity and the like.

The invention discloses a conducting loop structure. The conducting loop structure is characterized in that the sidewall of one side of a fixed contact, close to a rotating arm, comprises a first wall and a second wall which are distributed up and down; one end of the first wall is fixedly connected with the upper wall of the fixed contact while the other end of the first wall extends into the fixed contact; a first compressing spring is arranged between the other end of the first wall and the upper wall, and two ends of the first compressing spring are respectively connected with the upper wall and the first wall; one end of the second wall is fixedly connected with the lower wall of the fixed contact while the other end of the second wall extends into the fixed contact; a second compressing spring is arranged between the other end of the second wall and the upper wall, and two ends of the second compressing spring are respectively connected with the lower wall and the second wall; a clamping groove used for containing a moving contract is formed between the first wall and the second wall; and the moving contract is specifically a conducting plate which can be arranged into the clamping groove in a clamping manner. By adopting the conducting loop structure, the problem that the low switching-in success rate is generated to further impact the safety and stability of equipment and a power grid in running can be solved. The invention also provides a disconnecting switch comprising the conducting loop structure.

A remotely controlled, motorized drive system for a disconnector used in switchgear. An operator pushes a button on a remote control, which signals a receiver in the disconnector to engage a motor that is coupled to a drive shaft. The drive shaft causes movable contacts of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts in the switchgear that are connected to the line supply and to the circuit breaker that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.

A high-voltage disconnection knife insulated by air for external use in high-voltage electrical transmission and distribution networks, the disconnection knife includes two copper arms for the disconnection or contact, mounted in a parallel relation to each other, a front and rear contact base, a turning support in the vicinity of the rear base such that the arms turn at one of its ends about an axis perpendicular to them, a central copper block for distribution of the current flowing through the copper arms; the distance between the arms is defined by the set of stainless steel axes, the copper block and the turning mechanism. At the ends of the disconnection arms an aluminum spring of with transverse section of gradually reduced thickness is connected to the external surface, said spring being fixed to the ends of the arms by means of a pair of stainless steel axes. The front and rear L-shaped bases are formed by the bending of a copper sill with rounded edges to define an area of contact.

The object of the present invention is to provide an isolating / grounding switch with three phases in one enclosure, which has a simple conductor shape and a higher space utilization rate. Such a switch comprises a housing, three first conductors and three second conductors. The switch also comprises three first static contacts each connected to one of the first conductors, three second static contacts each connected to one of the second conductors, three moving contacts connected by an insulator, and three grounding contacts electrically connected to the housing. Each first static contact and a corresponding first conductor have the same axis as a corresponding second static contact and a corresponding second conductor. Each moving contact can slide on a corresponding first conductor and is electrically connected to this first conductor. Each moving contact is electrically connected to a corresponding second static contact when at one end of a corresponding first conductor, and electrically connected to a corresponding grounding contact when at the other end of this first conductor.

A disconnector, including a crossmember, which has contact pins at its opposite ends, C-shaped contact sockets, which are aligned so as to correspond to the pins in order to receive them by insertion, along a trajectory that is circumferential with respect to a first rotation axis of the crossmember, which is substantially transverse thereto, a support of the crossmember that defines for it the first rotation axis, and a second rotation axis, which is substantially longitudinal to the crossmember, elements for the rotation of the crossmember about the first rotation axis and about the second rotation axis, where fixed contacts are connected electrically, in two separate regions, to supporting arms that belong to the sockets, and have a portion that is intermediate with respect to the two regions, is adapted for contact with the moving contacts, and divides the fixed contacts into two opposite conducting arms.

The invention relates to the technical field of an outdoor AC high-voltage isolation switch, specifically a transmission system of the outdoor high-voltage isolation switch. The system comprises a frame beam, a switch mechanism, a main cutter, an insulation pillar, a connection base, a conductive pipe, a moving contact and a static contact, wherein a drive mechanism is connected with a vertical transmission link, which is connected with a transmission regulation crank of the main cutter arranged in the frame beam; the transmission regulation crank of the main cutter is connected with a first-stage transmission link, which is connected with the transmission regulation crank, which is connected with a main transmission shaft, which is respectively connected with six regulation cranks; two second-stage transmission rods of each phase are connected with the transmission regulation crank; and the two second-stage transmission rods of each phase are connected with the transmission regulation crank below the rotation shaft in a bearing pedestal. The rotation joint of the inventive transmission system is prevented from the direct corrosion of the rain and the snow, and the direct irradiation of the sunlight, thereby improving the anti-rust capacity of the transmission joint, and the six rotation shafts of three phases are applied with uniform force. The inter-phase transmission travel is not influenced by the temperature difference, and the operation is more flexible and reliable.

Disconnector for switchgear, having a first contact position, in which a contact is between main and first terminals, and a second contact position, in which a contact is between the main and second terminal. The disconnector includes a connector body moveable in a first direction between the first and second positions and having an end extendable in a direction substantially perpendicular to the first direction for providing a contact force between the end and the first, second or main terminals, a first operating mechanism arranged to move the body between the first and second positions, and a second operating mechanism arranged to extend the end when the disconnector is in either the first or second contact positions, in which the end includes a conical inside surface and the second operating mechanism includes a first shaft having a first conically shaped end positioned inside the conical inside surface.

The invention relates to a high-current switch (1) comprising a first fixed contact (2), a second fixed contact spaced apart from the first fixed contact (3), and at least one contact bridge (4) that is movable relative to the two fixed contacts. Furthermore, an advancing device is provided for transferring the contact bridge (4) from an open position in which the two fixed contacts (2, 3) are not connected to one another into a closed position in which the contact bridge connects the two fixed contacts electrically to one another. The advancing device is also provided for pressing the contact bridge in the closed position against the two fixed contacts. According to the invention, the advancing device is designed without springs, wherein the rigidity of the contact bridge and the advancing device in the direction of the pressing force corresponds to a value of at least 50 000 kNmm2, and wherein the lowest natural frequency of the system consisting of the contact bridge and the advancing device in the direction of the pressing force is greater than 2000 Hz.

At the junction between a stationary contact (16) belonging to a common part of the network and two stationary contacts (14, 15) belonging to dividing parts of the network, such as busbars, an electrical switch comprises a single moving contact (21), the length of which allows same to enter a recess (22) in one or both of the fixed contacts, depending on the position thereof. The assembly is simplified and reduced in size.

The invention discloses a large current three-position double-fracture disconnecting switch. The large current three-position double-fracture disconnecting switch comprises moving cutters, a ground row, fixed contacts and moving cutter supports, wherein moving contact ends are arranged at the two ends of each moving cutter, each moving cutter comprises two contact pieces, and inner sides of the moving contact ends of the every two contact pieces are respectively provided with a contact face. The outer sides of the moving contact ends of the every two contact pieces are respectively provided with a magnetic locking plate, the moving contact ends and the magnetic locking plates of the every two contact pieces are connected through a bolt, and a belleville spring is arranged on the outer side of each magnetic locking plate. An arc-shaped pulling plate which is taken as a middle transmission component is eliminated, assembling difficulty is reduced, stress-bearing in contact is more even, and meanwhile current-carrying performance of the moving cutters are improved.

A device for sectioning an electrical circuit is provided. The device includes a housing having two main sectioning terminals and, in the housing, a first member for sectioning a first electrical connection between the two main sectioning terminals, an automatic control, under the action of an electrical signal, of the first sectioning member from the closed position to the open position thereof, and a manual control member for resetting the first sectioning member from the open position to the closed position thereof. The device also includes, in the housing, two secondary sectioning terminals and a second sectioning member movable between a position for opening and a position for closing a second electrical connection between the two secondary sectioning terminals, the second sectioning member being coupled to the first sectioning member, commutation of the first sectioning member bringing about commutation of the second sectioning member.