179results about "Earthing switches" patented technology

The invention discloses a reverse operation limiting structure for a slow-acting double-shaft three-station mechanism, which relates to the technical field of accessories of medium-voltage gas insulated metal-enclosed switchgear and comprises a mechanism bracket, a locking part and a limiting part. The mechanism support is rotatably connected with an indication shaft, a grounding operation shaft and an isolation operation shaft, and linkage is realized through a gear set. The locking part is matched with the elastic pin assembly through the locking disc, and locking of the indicating shaft is achieved. The limiting part is of an elastic locking structure, is arranged at the ends, penetrating out of the mechanism front plate, of the grounding operation shaft and the isolation operation shaft, is in an unlocking state when no external force is applied to the operation handle, and can limit the rotation angle of the operation shaft after the external force is applied. The limiting part is arranged at the foremost end of the operation shaft, so that timely and reliable mechanical limiting of reverse misoperation is realized, damage to a mechanism transmission part and a switch body is effectively prevented, and operation safety is guaranteed. The structure is ingenious, the number of parts is small, the occupied space is small, the reliability is remarkably improved, and the cost is reduced.

The application provides a control circuit for an isolating switch or grounding switch and GIS equipment, and belongs to the field of GIS equipment, comprising a disconnecting control branch and a closing control branch, wherein the disconnecting control branch is connected with a disconnecting contactor coil in series, is connected with a disconnecting signal input end, and is further connected with a disconnecting holding branch, and the disconnecting holding branch is connected with a positive pole of a control power supply through a normally open contact of a protection relay; the closing control branch is connected with a closing signal input end, is further connected with a closing holding branch, and the closing holding branch is connected with the positive pole of the control power supply through the normally open contact of the protection relay. A protection relay coil and a switch module are connected in series between positive and negative poles of a motor power supply, and the switch module comprises a disconnecting contactor first normally open contact and a closing contactor first normally open contact which are connected in parallel with each other. The starting time of the protection relay is greater than the reset time of the disconnecting contactor and the closing contactor.

A method for assembling a switching apparatus for medium voltage electric systems characterized in that it comprises the following steps: - for each electric pole of said switching apparatus, providing a mounting assembly, said mounting assembly comprising: - providing a first semi-finished structure of said switching apparatus, wherein said first semi-finished structure comprises, for each electric pole of said switching apparatus, a first pole terminal and a first fixed contact electrically connected to said first pole terminal; - for each electric pole of said switching apparatus, installing said mounting assembly on said first semi-finished structure.

A visual indicator for an electrical assembly, the electrical assembly including a housing, and an electrical discharge mechanism arranged within the housing; the electrical discharge mechanism configured such that movement of the electrical discharge mechanism from a first position to a second position allows electrical components of the electrical assembly to electrically discharge. The visual indicator includes a display component arranged to display a visual indication external to the housing; and a mechanical coupling means configured to mechanically couple the display component to the electrical discharge mechanism, such that movement of the electrical discharge mechanism causes movement of the visual indication of the display component. When the electrical discharge mechanism is in the first position, the display component displays a first visual indication, and when the electrical discharge mechanism is in the second position, the display component displays a second visual indication.

Apparatus (1) for grounding a bay (10) of an electrical substation (100) comprising: - a first conductor element (2) electrically connectable to the bay (10); - a second conductor element (3) electrically connectable to ground; - a third conductor element (4) comprising a rod (43), extending between a first and a second end (41, 42), having an electrically conductive core (43a) and a stiffening coating (43b), said rod (43) being switchable between: - a first configuration in which the first and second end (41, 42) are respectively engaged with the first and second element (2, 3), - a second configuration in which the first end (41) is disengaged from the first element (2) and the second end (42) is engaged with the second element (3), - a third configuration in which the first and second end (41, 42) are respectively disengaged from the first and second element (2, 3) - kinematic members (5) configured to move the third element (4) with respect to the first and second element (2, 3) so as to switch the rod (43) between the first and second configuration; - hooking / unhooking members (7) switchable between a hooking configuration, in which they hook the second end (42) of the rod (43) to the second element (3) so as to retain it engaged with the latter when the rod (43) is in the first and second configuration, and an unhooking configuration, in which they unhook the second end (42) of the rod (43) from the second element (3) so as to allow the disengagement thereof from the element (3) and switch the rod from the second configuration to the third configuration.

The present invention relates to a hybrid ground protection device for a modular voltage power converter for converting a primary AC voltage having one or more phases into a secondary AC voltage. The hybrid ground protection device includes input and output contacts connected to the voltage input and voltage output of a single module of the converter. The input and output contacts connected to the same single module are connected to varistors that are energized when the voltage drop across the varistor exceeds a first threshold. A non-conductive switch bar having a bridging contact can be moved from an operating position to a grounding position. In the grounding position, the bridging contact connects the input and output contacts of the single module to each other and to a ground terminal. In the operating position, the input and output contacts are not connected by the bridging contact and are not connected to the ground terminal (FIG. 2).

The application discloses a three-position mechanism position signal operating mechanism and an isolated grounding switch. The mechanism comprises a top plate and a bottom plate, the top plate is provided with a second position signal device, and the bottom plate is provided with a first position signal device; a transmission device is connected with a driving device at one end and connected with the first position signal device and the second position signal device at the other end; after the operating mechanism receives an operation instruction, the driving device drives the transmission device to drive the first position signal device and the second position signal device to displace respectively, and double signal confirmation is performed. The double signal confirmation mechanism effectively avoids the possible misjudgment of a single signal, improves the accuracy of the position signal, and ensures that the background control system and the protection equipment can perform logical judgment based on accurate data.

The invention discloses an electric grounding switch operation interlocking device, and belongs to the technical field of switch cabinet equipment. The device comprises a hexagonal operation shaft, and further comprises an interlocking mechanism which comprises a fixing piece and a transverse sliding plate; the driving mechanism comprises an eccentric front interlocking driving plate and an eccentric rear interlocking driving plate which are fixed on the hexagonal operation shaft; and the crank arm connecting rod mechanism comprises a crank arm, and a vertical connecting rod and a transverse connecting rod which are respectively hinged with the crank arm. When a motor of the electric grounding switch drives the hexagonal operation shaft to rotate clockwise to be switched on, the rear interlocking driving plate and the front interlocking driving plate which are installed on the hexagonal operation shaft press and drive the transverse sliding plate to slide in the direction away from the rotating axis, and the front interlocking driving plate finally abuts against and locks the transverse sliding plate, so that when the electric grounding switch is switched on, the transverse sliding plate is locked. And a vertical connecting rod of the crank arm connecting rod mechanism drives the guide rail interlocking mechanism downwards to lock the circuit breaker handcart, so that the interlocking requirement that the circuit breaker handcart cannot be pushed into a working position when the grounding switch is switched on is met.

The invention relates to a fast earthing switch including two contact members of which at least one contact member is movable along an actuation direction in relation to the other contact member between a closed position, in which the contact members are electrically connected, and an open position, in which the contact members are electrically unconnected, the contact members defining an arcing region in which an arc is generated during a current interrupting operation and in which an arc-quenching medium is present; and an insulating member that is electrically insulating; wherein the movable contact member includes a first channel that at least sectionally extends along the actuation direction, the insulating member includes a second channel that at least sectionally extends along the actuation direction, the insulating member and the movable contact member are coupled to each other and the channels are in fluid communication to direct the arc-quenching medium.

A ring main unit load switch mechanism comprises a front plate, a middle plate and a rear plate, the rear plate is provided with a grounding operation assembly and an isolation operation assembly, the grounding operation assembly comprises a grounding operation main shaft, one end of the grounding operation main shaft extends to the middle plate and is connected with a pushing part, the middle plate is provided with an indicating piece linked with the pushing part, and the indicating piece is connected with the isolation operation assembly. And when the grounding operation main shaft is switched from the opening state to the closing state, the grounding operation main shaft rotates to drive the indicating piece to be switched to the closing indicating state. The indicating piece is not directly installed on the grounding main shaft, but is linked with the indicating piece of the middle plate through the pushing part at the end part of the main shaft, so that the action of the indicating piece is matched with the actual rotation stroke of the grounding main shaft. Only when the grounding operation main shaft really rotates in place, the pushing part can drive the indicating piece to be switched to the corresponding station, so that the misjudgment condition that the indicating piece indicates in advance but the grounding shaft is not completely in place in the prior art is avoided.

Electrical connection device with safety fuse element The invention relates to an electrical connection device (10), comprising a first (12) and a second (14) electrical connector; the first connector comprising an upper tab (24) and a lower tab (26), the upper tab being arranged above the lower tab; the second connector comprising a central blade (34). In a connection configuration, the central blade (34) of the second connector is arranged between the upper (24) and lower (26) tabs of the first connector and in contact with each of said tabs.The device further comprises: - a reservoir (16) having a lower opening, said reservoir and said opening being arranged above the central blade (34) of the second connector; and - a quantity of solid-state fusible material (18), received in the reservoir above the lower opening, the fusible material being electrically conductive. Figure for the abstract: Figure 1.

A switch includes: a circuit breaker; a disconnector; a grounding switch; and a manipulator that drives the disconnector and the grounding switch. The manipulator includes: a motor; a plurality of drive pulleys (33) installed on an output shaft of the motor; and a controller that controls rotation of the motor. Each of the disconnector and the grounding switch includes a switching manipulator that performs a switching action according to rotation of a driven pulley. A wire (4) for transmitting torque of the motor is stretched around each of the drive pulleys (33) and corresponding one of the driven pulleys. Each of the plurality of drive pulleys (33) includes: a mover (332) having a catch (334) that engages with the output shaft (32); and a chuck (331) having a mover (332) and a driver, the catch (334) being engaged with the output shaft (32) in the engaged state, and being out of contact with the output shaft (32) in the disengaged state. The controller exclusively brings one of the plurality of drive pulleys (33) into the engaged state.

An electrical assembly comprises a grounding mechanism (54) and an electrical device (52), the grounding mechanism (54) including a support longitudinal member (56) and a switch contact member (58), the switch contact member (58) arranged in or on the support longitudinal member (56), the switch contact member (58) configured to be connected in use to ground, the electrical device (52) including an electrical terminal, wherein the support longitudinal member (56) is configured to be slidable between: a first position in which the switch contact member (58) is separated from the electrical terminal so that the switch contact member (58) is electrically disconnected from the electrical device (52); and a second position in which the switch contact member (58) is in contact with the electrical terminal so that the switch contact member (58) is electrically connected to the electrical device (52).

Load break switch for controlled interruption of an electrical current, comprising: a switch blade for switching the electrical current; a blade support for supporting and operating the switch blade; a vacuum interrupter for controlled current interruption; and an actuator cam rotatable about a cam axis for operating the vacuum interrupter; wherein the switch blade is electricallyconductive and rotatable at a first blade end about a blade axis and wherein a second blade end is rotationally displaceable, in sequence, to electrically: connect the first blade end to a primary blade contact, connect the first blade end to a secondary blade contact, and disconnect the first blade end; wherein the vacuum interrupter is connected between the primary and secondary blade contacts to provide a shunt circuit for controlled current interruption; wherein the blade support is arranged, at the second blade end, to cause the rotation of the actuator cam to open the vacuum interrupter.

The application discloses a switch room interlocking mechanism and a ground knife interlocking mechanism and belongs to the field of power distribution equipment. The switch room interlocking mechanism comprises a contactor cabinet and a first interlocking mechanism arranged in the shell. The first interlocking mechanism comprises a ground knife operation shaft and a linkage shaft in mesh transmission with the end bevel gear of the ground knife operation shaft. The linkage shaft is fixed with a linkage plate one in a triangular structure. The linkage plate one serves as a transmission center and drives the second and third interlocking mechanisms through a connecting rod assembly to convert the state of the ground switch into mechanical locking of front and rear doors. The application further comprises a locking assembly two. The locking assembly two directly drives a locking rod to deflect and rise to block a handcart by using the movement of a ground knife operation hole shielding plate. The switch room interlocking mechanism and the ground knife interlocking mechanism are divided by a bevel gear rigid reversing and a triangular linkage plate. The forced synchronization of the ground switch and the locking of front and rear cabinet doors is realized. The active linkage of the shielding plate and the locking rod forms a safe logic of operation and locking. The safety of the equipment is improved.

The present invention relates to a three-position disconnector switch, comprising: an earthing contact (1), a power out contact (2), a power in contact (3), a piston (4), and a threaded rod (5). A length of the piston is such that in a first switch position an outer surface of a wall of the piston makes an electrical contact between the power out contact and the power in contact. The length of the piston is such that in a second switch position the outer surface of the wall of the piston does not make an electrical contact with either the earthing contact or the power in contact. The length of the piston is such that in a third switch position the outer surface of wall of the piston makes an electrical contact between the earthing contact and the power out contact. The piston comprises an inner threaded section (7) configured to engage with the threaded rod, wherein a length of the inner threaded section is less than the length of the piston. Rotation of the threaded rod is configured to engage with the inner threaded section to move the switch between the different switch positions.

Embodiments herein provide a mechanical fuse device (50) for a drive shaft (82) of a switchgear (200). The fuse device (50) includes a first connection portion (42) and a second connection portion (44), and a neck portion (46) connecting the first connection portion (42) and the second connection portion (44). The drive shaft (82) includes a first member (82a) and a second member (82b). The first connection portion (42) is configured to be removably connected to the first component (82a) and the second connection portion (44) is configured to be removably connected to the second component (82b), thereby connecting the first component (82a) and the second component (82b) of the drive shaft (82). The neck portion (46) is a weak link configured to break and thereby disconnect the first component (82a) and the second component (82b) of the driveshaft (82) when subjected to a torque exceeding a predetermined torque value.

To provide an operation mechanism for activating a disconnector or an earthing switch.SOLUTION: A disconnector or an earthing switch for connecting three conductors of different phases to respective switching tubes comprises: a rotatable drive shaft configured for operating the disconnector or the earthing switch; the three respective switching tubes, which are arranged and configured to be axially movable together between a connected position configured for connecting the three conductors and a disconnected position configured for not connecting the three conductors; a partially toothed worm wheel configured for translating a rotation of a worm into the axial movement of the three switching tubes between the connected position and the disconnected position, where the partially toothed worm wheel is disengaged from the worm in the connected position and the disconnected position; and a re-engagement device configured for engaging the partially toothed worm wheel again with the worm in the connected position and the disconnected position.SELECTED DRAWING: Figure 1

Electrical connection device with safety fuse element. The invention relates to an electrical connection device (10) comprising a first (12) and a second (14) electrical connectors; the first connector comprising an upper tab (24) and a lower tab (26), the upper tab being arranged above the lower tab; the second connector comprising a central blade (34). In a connection configuration, the central blade (34) of the second connector is arranged between the upper (24) and lower (26) tabs of the first connector and in contact with each of said tabs.The device further comprises: - a reservoir (16) having a lower opening, said reservoir and said opening being disposed above the central blade (34) of the second connector; and - a quantity of solid fusible material (18), received in the reservoir above the lower opening, the fusible material being electrically conductive. Figure for the abbreviation: Figure 1.

The invention relates to a switchgear (1) for breaking an electrical connection, comprising a first contact structure (10) with a first base (12) and a first contact member (14); a second contact structure (20) with a second base (22) and a second contact member (24) and corresponding to the first contact structure (10); a spring accumulator (30) configured for resiliently mounting the first (14) or the second (24) contact member on the respective first (12) or second (22) base; a drive system (40) configured for at least partially moving the first (14) and the second (24) contact members relative to one another along a switching axis (2) in order to break the electrical connection to ground (GND); and a locking means (50) configured for locking the first (14) and the second (24) contact members along the switching axis (2) in a releasable manner.

The present disclosure relates to a switching apparatus comprising one or more electrical poles, wherein for each electric pole, the switching apparatus comprises a first fixed contact electrically connected to a first pole terminal, a second fixed contact electrically connected to a second pole terminal and a third fixed contact electrically connected to a ground terminal. The switching apparatus further comprises a movable contact, which is reversibly movable about a corresponding rotation axis so that said movable contact can be coupled to or uncoupled from one or more of the above-mentioned fixed contacts, and a vacuum interrupter. An auxiliary contact is electrically connected to said fixed arc contact and a contact lever is electrically connected to said auxiliary contact and reversibly movable about a corresponding second rotation axis. The contact lever is couplable to said movable contact to electrically connect said movable contact to said auxiliary contact.

The invention relates to a high-speed grounding switch (1), comprising two contact members (2), of which at least one contact member (2) is movable relative to the other along an actuation direction (Z) between a closed position in which the contact members (2) are electrically connected and an open position in which the contact members (2) are not electrically connected, the contact member (2) defines an arc region in which an arc is generated and an arc quenching medium is present during a current interruption operation; and an electrically insulating insulating member (22); wherein the movable contact member (2) comprises a first channel (5, 6) extending at least partially along the actuation direction (Z), the insulating member (22) comprises a second channel (24) extending at least partially along the actuation direction (Z), the insulating member (22) and the movable contact member (2) are coupled to each other, and the channels (5, 6, 24) are in fluid communication for conducting an arc extinguishing medium.

The embodiment of the application provides a longitudinal rotation isolation vacuum circuit breaker, and relates to the technical field of electrical equipment. The longitudinal rotation isolation vacuum circuit breaker comprises a support, an operating mechanism, a pole column assembly and a sensing assembly. The operating mechanism comprises a shell, a switching linkage mechanism, a gear piece and a grounding switch linkage. The pole column assembly is rotationally arranged on the support and the shell. The sensing assembly comprises an acting piece, a closing confirmation sensor and an opening confirmation sensor. The closing confirmation sensor and the opening confirmation sensor are arranged in the shell. The switching linkage mechanism is connected to the pole column assembly and located in the shell. The gear piece is movably arranged in the shell. The shell is provided with a handle channel. The grounding switch linkage is movably arranged in the shell and located on the handle channel. The embodiment of the application simplifies the structure of the interlocking mechanism and improves the intelligence of the isolation vacuum circuit breaker, so as to improve the operation convenience of the interlocking mechanism, the reliability and safety of the circuit breaker.

The invention relates to the technical field of electric power system safety protection, and discloses a friction coupling for a grounding knife-switch and the grounding knife-switch, the friction coupling comprises a fixed seat, an outer rotating shaft and an inner rotating shaft, the outer rotating shaft and the inner rotating shaft are rotatably arranged on the fixed seat, an inner end is arranged at the inner end of the outer rotating shaft, and the inner end is sleeved with an outer friction wheel; the outer friction wheel and the outer rotating shaft are circumferentially clamped and axially connected in a sliding manner; an inner friction wheel is fixedly arranged at the outer end of the inner rotating shaft; an elastic piece is further arranged between the outer rotating shaft and the outer friction wheel, the friction surface of the outer friction wheel and the friction surface of the inner friction wheel are of a multi-stage stepped contact structure, the friction surface of the outer friction wheel is divided into at least two stages of annular areas with different curvature radiuses, and the friction surface of the inner friction wheel is correspondingly arranged; by means of the design, after the disconnecting link plate is in place, the disconnecting link plate slips due to structure limiting, power transmission is automatically cut off, equipment is protected against overload damage, meanwhile, segmented friction force adjustment under different loads is achieved, the transmission efficiency is improved, and accurate control over a plurality of components is achieved through one driving source.

The invention relates to a grounding wire and disconnecting switch anti-misoperation mechanical locking device which comprises a shell, an isolation control panel arranged on the inner side of the shell and a grounding wire base arranged on the rear side of the shell, grounding wire interfaces are arranged in the left end and the right end of the grounding wire base, and cover plates are arranged on the front sides of the grounding wire interfaces. The upper end of the isolation control panel is rotationally connected with the side wall of the shell, the isolation control panel drives the rotating assembly connected with the cover plate to rotate through the rotating-to-straight-line mechanism when rotating, and the cover plate is driven by the rotating assembly to rotate so as to open or close the grounding wire interface; a clamping assembly is arranged below the shell, and the clamping assembly facilitates clamping of the isolation control board on the front side of the lower end of the isolation control board after the isolation control board rotates backwards. The design is reasonable, the operation safety performance is effectively improved, and power leakage caused by long-term use of a grounding wire interface is avoided; the isolation control panel can be further limited, the shell is prevented from being touched by mistake in the operation process, and the safety is further enhanced.

The high-voltage static contact comprises a wall bushing, and the wall bushing is arranged in the middle of a contact mounting plate in a penetrating manner; a conducting rod is arranged in the middle of the wall bushing, a mounting notch is formed in the front end of the wall bushing, and the tulip contact is clamped at the front end of the conducting rod; a strip-shaped slotted hole is formed below the mounting notch; the front part of the conducting rod is connected with a grounding knife contact copper bar through a contact connecting rod; the rear end of the wall bushing is provided with a contact copper block, the rear end of the conducting rod penetrates through the wall bushing and is tightly connected with the contact copper block, the rear side face of the contact copper block is fixedly connected with a stud, the stud is movably sleeved with a pressing plate, the rear side face of the pressing plate is provided with a compression nut, and the compression nut is connected with the stud through threads. According to the grounding switch, the defects in the prior art are overcome, the front end of the conducting rod is matched with the grounding switch contact copper bar, so that the outgoing line and wiring static contact and the grounding switch contact are combined into a whole, and the required space for mounting the grounding switch can be obviously reduced; and the cost is effectively reduced.

The application discloses a ground knife middle-placed load switch combined electric appliance, which comprises a rack, which is a shared support frame of a load switch and a ground switch; the load switch comprises a switch body, an upper contact assembly and a lower contact assembly; the lower contact assembly is electrically connected with the switch body; a conductive cylinder of the switch body can be lifted and displaced and is electrically connected with or disconnected from the upper contact assembly to form a closing or opening state of a main circuit; when the opening state is formed, a part of the conductive cylinder close to the upper contact assembly is exposed to form a grounding effect part; the ground switch is arranged between the upper contact assembly and the conductive cylinder; when the opening state is formed, the ground switch is electrically connected with the grounding effect part of the conductive cylinder to form a grounding circuit. The ground switch is arranged on the inner side of the load switch to form a middle-placed structure, the longitudinal length of the switch is shortened, and the application has the advantages of reasonable structure, safety and reliability.

This invention discloses a GIS combined electrical appliance, including a housing, at least one disc insulator, and a conductor assembly. The housing has an external through hole. The disc insulator is detachably installed to the external through hole via an insulator mounting mechanism. The disc insulator has at least two external sockets. The conductor assembly is located inside the housing and includes connecting conductors that correspond one-to-one with the external sockets. When the disc insulator is installed to the external through hole, the connecting conductors and the external sockets are connected by a plug-in structure to achieve a stable conductive connection. The disc insulator can be rotated to at least two set angles and is detachably installed to the external through hole via the insulator mounting mechanism, so that the external sockets can be plugged into different connecting conductors to achieve various connection combinations, thereby realizing the phase switching function. Furthermore, a grounding switch assembly can be configured at the external through hole to realize the grounding switch maintenance function.

The present invention relates to a high-speed earthing switch (1), comprising two contacts (2), at least one of which is movable relative to the other between a closed position in which the contact (2) is connected and an open position in which the contact (2) is not connected, the contact (2) defining an arc discharge region in which an arc occurs during a current interruption operation and in which an arc-extinguishing medium is present, and a cylindrical guide tube (3) in which the at least one movable contact (2) forming a piston (4) is slidably arranged for linear movement between a closed position and an open position, the guide tube (3) being closed at an upper end (5) and / or at an opposite lower end (6), thereby defining a first compression chamber (9) with an upper end (5) and / or a second compression chamber (10) with a lower end (6), thereby slowing down the movement of the piston (4) when moving to the open and / or closed positions.

The invention discloses a bus grounding switch, which belongs to the technical field of power distribution switch devices and comprises a bus seat, and the bottom of the bus seat is connected with a bus board, a bus on-off mechanism and a bus grounding mechanism. Through the arrangement of the bus base, the bus on-off mechanism and the bus grounding mechanism, the bus on-off mechanism can separate a bus board from a power system when downstream power equipment fails, the bus grounding mechanism is used for grounding a bus, and the bus on-off mechanism and the bus grounding mechanism are integrally arranged on the bus side of the PT cabinet and share one cabinet body with the PT cabinet. According to the bus grounding switch, the number of cabinet bodies is not increased, the cost is saved, through the optimal design of the structure, the joint stability is specifically enhanced, and the short-circuit current closing capacity is achieved.