84results 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.

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 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.

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.

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.

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 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.

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 present invention relates to an operating mechanism for a switchgear, comprising: a rotatable output shaft (11) configured to perform a circuit breaking or closing operation of the switchgear by rotation; a rotatable energy storage rod (13) and a spring (4), wherein the energy storage rod (13) is configured to rotate by a motor (1) to drive the spring (4) to be compressed to store energy; and a rotatable drive rod (12) connected to the output shaft (11), rotatably connected to the energy storage rod (13) and freely rotatably connected to the spring (4) to allow ≤60° rotatability between the drive rod (12) and the spring (4) for performing a circuit breaking or closing operation of the switchgear, wherein the spring (4) is configured to release energy during at least one period of the circuit breaking and closing operation of the switchgear to rotate the drive rod (12) after passing through the dead position of the spring (4).

A medium-voltage, compact, three-position (closed, open, earthed) switch-disconnector with current interruption in a vacuum-sealed chamber, and insulated between the phases and disconnected in air up to 17 kV or, in a sealed pressure-tight enclosure, insulated between the phases and disconnected in dry air up to 36 kV, said switch-disconnector comprising a three-pole assembly, wherein each pole comprises: a support element (11, 13) of insulating material carrying: - a first male plug-in current-carrying and disconnecting contact in air (23) associated with a fixed upper right-angled contact (21); - a telescopic, movable, current-carrying and disconnecting contact in air (39, 41, 43) arranged on a hollow cylindrical support (37) of insulating material rotatable with respect to the support element (11, 13); and - a second fixed male lower plug-in contact (27) associated with a fixed right-angled earthing contact (25), wherein said support element (11, 13) is T-shaped with curved arms and with a widened hollow base (29) in which said hollow cylindrical support (37) made of insulating material and carrying said movable telescopic contact (39, 41, 43) is rotatably arranged, and wherein said movable current-carrying and disconnecting contact in air (39, 41, 43) is rotatable between a first closed position engaged with said first, male, plug-in current-carrying and disconnecting contact in air (23), a second disconnected position, and a third position connected to earth via said second fixed earth contact (27); said switch further comprising a vacuum extinguishing chamber (57) fixed near one end of the support element (11, 13) near the fixed upper right-angled contact (21), said vacuum-sealed chamber (57) containing two axially aligned contact rods (59, 61), one of which (59) is fixed and connected to said fixed upper right-angled contact (21), and the other (61) is movable for vacuum interruption by means of an electrical connection linkage operatively connected to a free end of said movable current-carrying and disconnecting contact in air (39, 41, 43).

A ground switch is disclosed. The ground switch includes an antenna port, a pair of switching devices coupled with the antenna port and a charge pump coupled with the pair of devices and configured to turn on / off the pair of devices based on an AC input signal received through the antenna port and a DC offset voltage added to the AC input signal. The ground switch further includes a clamping circuit to clamp an output of the charge pump. The ground switch is configured to provide a stable ground to components of devices such that a radio frequency identification (RFID) device.

The invention relates to a direct-acting three-position isolating switch with interlocking protection and a working method thereof. The direct-acting three-position isolating switch comprises a shell, and an isolating operation shaft and a grounding operation shaft are arranged in the shell; the nut is positioned in the shell and is sleeved on the grounding operation shaft and the isolation operation shaft; when the nut is separated from the front and back middle position, the grounding handle interlocking mechanism is triggered, so that the grounding handle interlocking mechanism locks the grounding operation handle, and when the nut reaches the front side position, the grounding handle interlocking mechanism unlocks the grounding operation handle; and when the nut is separated from the front and rear middle positions, the isolation handle interlocking mechanism is triggered, so that the isolation handle interlocking mechanism locks the isolation operation handle, and when the nut reaches the rear side position, the isolation handle interlocking mechanism unlocks the isolation operation handle. The grounding shifting block or the isolation shifting block drives the corresponding lock plate to be inserted into the annular groove of the operation handle, and the defect that the handle can be pulled out when the switch is not in place is overcome.

Disclosed herein is a switching device comprising switching means. The switching means comprises a vacuum interrupter and a disconnector switch connected in series. The switching device also comprises an operating mechanism configured to open and close the switching means and an actuating shaft configured to rotate about an axis to actuate the operating mechanism. The actuating shaft is configured to rotate in a first direction about the axis from a first position to a second position to cause the operating mechanism to close the switching means, wherein the operating mechanism is configured to close the disconnector switch before closing the vacuum interrupter. The actuating shaft is also configured to rotate in a second direction about the axis from the second position to the first position to cause the operating mechanism to open the switching means, wherein the operating mechanism is configured to open the vacuum interrupter before opening the disconnector switch. A method of operating the switching device is also disclosed.

The invention relates to the technical field of electrical switch equipment, and discloses an electrical cabinet and an integrated three-position isolation grounding switch mechanism thereof. In the switch mechanism, an isolation operation assembly and a grounding operation assembly are symmetrically arranged on a frame structure, each operation assembly comprises an operation shaft, an input transmission part, an output transmission part and a middle transmission part, and a first pin is arranged on the middle transmission part. The two ends of the spring are connected with the first pins on the two sides respectively, when the operation shaft on any side rotates, the corresponding first pin moves to enable the spring to store energy, and when the first pins on the two sides and the axis of the spring are collinear and then cross a dead point, the spring releases energy to drive the corresponding output transmission piece to rotate rapidly. According to the invention, two functions of isolation and grounding are simultaneously realized in a single module through the symmetrical double-operation assembly and the over-dead-point quick energy release mechanism, and the device has the advantages of compact structure, quick and reliable action, good symmetry and perfect safety protection.

The invention relates to the technical field of switch equipment, in particular to a three-phase common box type isolation grounding switch and a GIS (Gas Insulated Switchgear). The three-phase common box type isolation grounding switch comprises a three-way shell, two opposite openings of the three-way shell are distributed in the first direction, a middle phase and a side phase which are arranged in a triangular mode are arranged between the two opposite openings, and each of the middle phase and the side phase comprises a phase conductor and an isolation static contact. A moving contact seat is further arranged on one side of the middle phase and the side phase in the second direction in the three-way shell, the second direction is perpendicular to the first direction, the moving contact seat and the first direction form a set included angle and are obliquely arranged, a direct-acting moving contact is arranged in the moving contact seat, the middle phase is located on one side, close to the moving contact, of the side phase, and the second direction is perpendicular to the first direction. The conductor of the middle phase is provided with a bending section which is recessed towards the space between the two side phases, and the part, corresponding to the corresponding moving contact seat, of the bending section in the second direction is far away from the moving contact seat by being recessed. According to the invention, the middle phase is arranged close to the moving contact seat, so that the overall size is reduced to the maximum extent.

The invention is suitable for the technical field of isolation switches, and particularly relates to a closed ice melting isolation switch which comprises a base, a first supporting column, a second supporting column, a third supporting column, a closed shell, a heating plate, a temperature monitor, a vibration monitor, a temporary power supply and a control device. The closed ice melting isolation switch switching method comprises the following steps: detecting a first ice melting request or a second ice melting request at any time; after the first ice melting request or the second ice melting request is detected, monitor information is obtained, and whether the disconnecting switch is frozen or not is judged according to the monitor information; when the isolating switch is frozen, sending a self-ice-melting instruction; when the isolating switch is not frozen, sending an ice melting path switching instruction; and when the detected signal is a second ice melting request, the voltage of the line on the first static contact is monitored, and when the line on the first static contact is detected to be grounded, the temporary power supply is controlled to supply direct current to the line. The method can solve the problems that an existing closed ice-melting isolation switch depends on manpower too much, and the ice-melting efficiency is low.

A switching system includes a vacuum breaker, a driving plate, a main switch, and a contact-maintaining element. The vacuum breaker includes a fixed electrode, and a mobile electrode configured to move between a closed position and an open position. The driving plate is connected to the mobile electrode. The main switch is configured to move between a first position allowing electrical current to pass in a main circuit and a second position preventing electrical current from passing in the main circuit. The main switch is configured to drive the driving plate during a transition from the first position to the second position to cause the mobile electrode to make a transition from the closed position to the open position. The contact-maintaining element is configured to maintain contact between the driving plate and the main switch and limit acceleration of the driving plate.

The invention belongs to the technical field of intelligent power grids, and particularly discloses a high-voltage power distribution cabinet grounding switch device which comprises a partition plate and a support which are arranged in a high-voltage power distribution cabinet, the high-voltage power distribution cabinet comprises a cabinet body and a cabinet door rotationally connected with the cabinet body, the support is located below the partition plate, and an insulator is fixedly installed at the top of the support. A static contact is fixedly mounted at the top of the insulator, a movable contact is arranged at the bottom of the static contact, and a control rod penetrates through the lower part of the movable contact; one end of the control rod is provided with a fixing assembly, the fixing assembly is used for assisting a maintainer to open and close the grounding switch, and the fixing assembly is connected with the cabinet body and the cabinet door; an electricity testing assembly is arranged in the cabinet body in a sliding mode, is used for assisting a maintainer in electricity testing, and is in threaded connection with the cabinet door. Through the arrangement of the electricity testing assembly, electricity testing can be carried out on the grounding switch in the cabinet body without opening the cabinet door, electricity testing can be conveniently carried out by maintainers, errors caused by indirect electricity testing are avoided, and the safety of the maintainers is improved.

A switching apparatus for medium voltage electric systems, said switching apparatus comprising one or more electric poles, wherein, for each electric pole, said switching apparatus comprises: - a first pole terminal, a second pole terminal and a ground terminal, said first pole terminal being electrically couplable with a first conductor of an electric line, said second pole terminal being electrically couplable to a second conductor of said electric line and said ground terminal being electrically couplable to a grounding conductor; - a first contact arrangement including a first fixed contact member and a first movable contact member, said first fixed contact member being electrically connected to said first pole terminal and including a first fixed contact, said first movable contact member being electrically connected to said second pole terminal and including a first movable contact, said first movable contact member being reversibly movable along a translation axis, so that said first movable contact can be coupled with or decoupled from said first fixed contact; - a second contact arrangement including a second fixed contact member and a second movable contact member, said second fixed contact member being electrically connected to said ground terminal and including a second fixed contact, said second movable contact member being electrically connected to said second pole terminal and including a second movable contact, said second movable contact member being reversibly movable about a corresponding rotation axis, so that said second movable contact can be coupled to or decoupled from said second fixed contact; - an actuation assembly for actuating the first and second movable contact members of each electric pole during a switching manoeuvre of said switching apparatus, said actuation assembly including an actuation shaft reversibly movable about a corresponding rotation axis; - a motion transmission assembly for transmitting mechanical forces provided by said actuation shaft to the first and second movable contact members of each electric pole.

An apparatus for use in an electric power delivery system, the apparatus comprising: a DC circuit breaker having a first terminal and a second terminal and configured to automatically switch from a closed state to an open state during an overcurrent condition; a disconnector in series with the DC circuit breaker, the disconnector having a first terminal for connection with a first polarity terminal of a DC power source, a second terminal for connection with a second polarity terminal of the DC power source, and a common terminal connected with the first terminal of the DC circuit breaker, the disconnector having at least a first position in which the first terminal is connected to the common terminal and a second position in which the second terminal is connected to the common terminal; and an interlock mechanism coupled with the DC circuit breaker and the disconnector, the interlock mechanism configured to disable the DC circuit breaker to prevent automatically switching from the closed state to the open state during the overcurrent condition when the disconnector is in the second position.

A switching device (50) for an electrical apparatus (100) is proposed, comprising: a vacuum interrupter (3); a drive element (4) connected to the vacuum interrupter (3); a movable element (20) movable between a position for closing an electrical circuit and a position for opening the electrical circuit, comprising: an electrically conductive blade (11); a support (12) fixed to the blade (11); the movable element (20) is configured to:-drive the drive element (4) via the electrically conductive blade (11) according to a disconnection stroke of the electrical circuit; and-driving the drive element (4) via the support (12) as a function of the closing stroke. The support (12) comprises a drive surface (14) which is in contact with the receiving surface (7) of the drive element (4) during the closing stroke of the circuit. The drive surface (14) of the support (12) and the receiving surface (7) of the drive element (4) are convex.