272results about "Switches with movable electrical contacts" patented technology

Present disclosure relates to a parallel breaking load switch, which includes: - a stationary contact; - a moving contact, wherein the moving contact is configured to be capable of rotating around a pivot axis among a closed position, a commutation position and a breaking position; - a vacuum interrupter, wherein the stationary contact is electrically connected with a fixed switch contact in the vacuum interrupter; and - a cam assembly, wherein the cam assembly is provided with a small contact capable of rotating around the pivot axis; wherein a moving end of a movable switch contact can be guided and operatively connected to the cam assembly, and a travel of the linear movement is not less than 7 mm. Thus, a relatively long breaking distance can be realized, and technical requirements such as over-travel can be set flexibly. Present disclosure also relates to a medium-voltage switchgear with the parallel breaking load switch.

The present application relates to a high-voltage AC disconnector, and relates to the technical field of disconnectors, which includes a base and a conductive mechanism, two insulating columns are arranged on the base, and the two insulating columns are respectively arranged on the left and right sides of the top of the base, and the installation positions of the two insulating columns are provided with installation grooves, and the installation grooves are provided with easy-to-disassemble fixing mechanisms, and the easy-to-disassemble fixing mechanisms include installation components and clamping components, and the installation components include installation sleeves and connecting columns, and the installation sleeves are fixedly arranged in the installation grooves, and the connecting columns are fixedly arranged at the bottom of the insulating columns, and the connecting columns are adapted to the connecting columns. The present application has a reasonable structure, and the present application has a simple and convenient disassembly process, avoids the need to use external tools for operation, and improves the practical effect.

The present invention discloses a three-position switch. An innovative fast direct-acting three-position switch is used, so that a moving grounding contact is separated from a moving isolating contact, and contact ablation after closing of a grounding short-circuit current does not affect flow of a main circuit, thereby improving closing capacity. During opening, the moving isolating contact and the moving grounding contact are respectively shielded by a shielding cover, and arc ablation of the contact does not affect insulating performance of a clearance. A three-phase moving isolating contact and a three-phase moving grounding contact are simultaneously driven by a transmission shaft, thereby ensuring synchronization of three phases. A linear motion of the moving grounding contact and the moving isolating contact is implemented through rotation of a three-position insulating spindle, and switching of actions such as closing, opening, and grounding of the three-position switch is implemented. The present invention further discloses a gas box using the switch.

The invention relates to the technical field of circuit breaker isolation switch equipment, and discloses a circuit breaker isolation switch of a primary and secondary fusion ring main unit, which comprises a mechanism box body, an installation space is arranged in the mechanism box body, and the top of the mechanism box body is fixedly connected with a plurality of airtight insulators. According to the invention, when the contact piece is arranged and the disconnecting switch part needs to be switched on, the operation switch is firstly rotated reversely, the rotating shaft rotates to drive the connecting contact at one end of the isolating rod at one end of the operation insulator to approach, and the connecting inclined block is arranged to be inclined, so that the collision phenomenon caused by inaccurate alignment of the isolating rod and the connecting contact can be avoided; the isolating rod is aligned and connected with the connecting contact, so that the connecting contact is protected from being damaged due to collision between the connecting contact and one end of the isolating rod on one hand, and the butt joint accuracy of the connecting contact at one end of the isolating rod on the other hand is improved on the other hand.

An embodiment of the invention discloses an integrated environment-friendly gas-insulated three-position isolating switch, which comprises a mechanism mounting plate, an operating mechanism, a contact mechanism and an insulating support arranged on the inner side of the mechanism mounting plate, and is characterized in that the contact mechanism comprises a grounding static contact, a middle static contact, a high-voltage static contact, a moving contact, an insulating screw rod and a magnetofluid dynamic sealing device; the grounding static contact, the middle static contact and the high-voltage static contact are sequentially arranged on the insulating bracket, the moving contact is correspondingly arranged in the middle static contact, and the magnetofluid dynamic sealing device is arranged on the mechanism mounting plate; one end of the insulating screw rod is connected with a rotating shaft of the magnetofluid dynamic sealing device, and the other end is correspondingly in threaded connection with the moving contact; and the operating mechanism is arranged on the outer side of the mechanism mounting plate. According to the invention, an integrated preassembly design concept is adopted, and the whole GIS is installed in the compartment after being installed and debugged, which is different from the traditional GIS which is assembled and debugged in a narrow compartment, so that the whole production efficiency is effectively improved, and the labor cost is saved.

Embodiments of the invention provides a smart outdoor switchgear for control and protection of connection and disconnection of a medium-voltage microgrid, which includes: a current transformer, an isolating switch mechanism, an outdoor circuit breaker, an electric isolating driving mechanism and an outdoor jet type fuse. The current transformer is installed on an outlet end of the outdoor circuit breaker. The isolating switch mechanism is connected to the current transformer, and the isolating switch mechanism is connected to the outlet end of the outdoor circuit breaker through the current transformer. A top of the isolating switch mechanism on a side away from the current transformer is connected to a top of the outdoor jet type fuse, and a bottom of the isolating switch mechanism on the side away from the current transformer is connected to a bottom of the outdoor jet type fuse. The electric isolating driving mechanism is installed on the bottom of the isolating switch mechanism.

The embodiment of the invention relates to a three-position switch and a corresponding switch cabinet. The three-position switch generally comprises an isolating contact, a grounding contact and a moving contact. The moving contact includes a first end and a second end. The first end is connected with the base, the second end is opposite to the first end along the longitudinal extension direction of the moving contact, rotates around the first end along with the moving contact, and is switched among a switching-on station in contact with the isolating contact, a grounding station in contact with the grounding contact and a switching-off station out of contact with both the isolating contact and the grounding contact. The second end is provided with a first protrusion and an arc-resistant component. The first protrusion protrudes from the main surface of the moving contact and makes contact with the isolation contact when the second end is located at the switching-on station. An arc resistant member is disposed proximate the first protrusion and configured to withstand an arc when the first protrusion is proximate the ground contact. According to the embodiment of the invention, the moving contact is correspondingly modified, so that the consistency of the contact resistance before and after the experiment can be ensured.

The invention discloses a primary and secondary fusion pole-mounted circuit breaker and a use method thereof, and belongs to the technical field of circuit breakers, two handles are extruded to enable a sliding block to drive a clamping rod to be separated from a clamping groove so as to release the locking state between a moving contact and a static contact, a sliding column is supported through a first spring, the sliding column jacks up an isolation switch through a pin shaft, and the isolation switch is fixed through a second spring. When the isolating knife switch is not stressed, the moving contact and the static contact are always in a separated state, the isolating knife switch is prevented from deflecting to be in contact with the static contact due to external force, and when the isolating knife switch and the pillar insulation assembly are connected, the moving contact or the isolating knife switch is pressed down, and the moving contact is in close contact with the static contact, the static contact is in close contact with the pillar insulation assembly. The sliding block is supported through the elastic force of the second spring, so that the sliding block drives the clamping rod to be clamped into the clamping groove, the purpose of locking the static contact and the moving contact is achieved, the situation that the static contact and the moving contact are separated due to external force collision is prevented, and the working stability of the primary and secondary fusion pole-mounted circuit breaker is guaranteed.

The present invention relates to the technical field of disconnectors, and discloses an assembly stand for an outdoor 220KV high-voltage disconnector, comprising an assembly stand, an insulator disposed on the assembly stand, a metal rod disposed at the bottom of the insulator, and a correction assembly disposed on the assembly stand, comprising an adjustment member, the adjustment member comprising a fixing box fixed to the top of the assembly stand, a threaded sleeve rotatably connected within the fixing box. The beneficial effect of the present invention is that when the assembly stand is deformed and causes the insulator to deviate, the position of the insulator can be automatically corrected by the correction assembly, and the insulator is automatically returned to its normal position by the automatic correction, thereby restoring the contact connection portion of the disconnector to a normal state, ensuring uniform contact pressure and stable contact area, keeping contact resistance within a normal range, avoiding problems such as heating, oxidation, and wear caused by increased contact resistance, and ensuring stable conductive performance of the disconnector.

This invention relates to a switchgear, comprising: a cabinet; an external busbar connection structure disposed on the cabinet; a busbar located within the cabinet and electrically connected to the external busbar connection structure; a three-position switch disposed within the cabinet, having a grounding position, an isolation position, and a conducting position electrically connected to the busbar; the switchgear further comprising: a busbar grounding switch, including a grounding stationary contact and a grounding moving contact disposed within the cabinet; the grounding stationary contact is electrically connected to the busbar; the grounding moving contact is used for grounding connection and is driven by a corresponding drive mechanism to reciprocate, thereby connecting and disconnecting with the grounding stationary contact. When maintenance of the switchgear is required, the switch of the three-position switch is first rotated to the grounding position to de-energize the entire switchgear, and then the grounding moving contact of the busbar grounding switch is made conductive with the grounding stationary contact. At this time, the busbar is grounded to eliminate the charge carried in the busbar, ensuring the safety of maintenance personnel.

The present invention relates to a high-voltage load switch with magnetic blowout composite arc extinguishing capability, including a rear fixing plate and a front fixing plate, wherein between the rear fixing plate and the front fixing plate, an upper beam is mounted on the upper right, a lower beam is mounted on the lower right, and a grounding beam is mounted on the lower left; a plurality of upper insulators are arranged at intervals on the upper beam; a plurality of isolation contacts are mounted correspondingly on the plurality of upper insulators; and a copper-tungsten alloy arc-directing pin and an arc-directing closure assembly are provided on a lower side of each isolation contact. In the present invention, permanent magnets and arc chutes are used in combination for arc extinguishing. At the time of moving contact opening, an arc is blown to gaps in an arc-directing closure assembly under the action of magnetism, and the arc-directing closure assembly generates an electromagnetic force perpendicular to a moving trajectory of the arc, such that under the action of the electromagnetic force, the arc is split into multiple segments, lengthened and rapidly cooled, and energy of the arc is absorbed, forcing the arc be to extinguished or preventing its reignition after a zero crossing point, so the arc extinguishing effect is significantly improved. The present invention has the advantages of timely arc extinction response and strong arc extinction capability. The high-voltage load switch has a smaller overall volume and lowered cost, and is safer and more reliable.

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 present invention relates to an isolating switch with stable contact between moving and static contacts, comprising a base, a first wiring screw, a second wiring screw, a static contact rod, a static contact, a moving contact rod, a moving contact, and an opening and closing driving mechanism, wherein the static contact rod is connected to the first wiring screw, and further comprising a conductive mechanism, wherein the conductive mechanism comprises a wiring board and a flexible connection, wherein the rear end of the moving contact rod can be rotatably mounted on the base, the moving contact is mounted on the front end of the moving contact rod, one end of the wiring board is connected to the second wiring screw, and the other end is connected to the rear end of the moving contact rod through a flexible connection, the wiring board and the static contact are respectively located on both sides of the moving contact rod, the opening and closing driving mechanism drives the moving contact rod to rotate so that the moving contact contacts or disconnects with the static contact, and the wiring board has a repulsion generating section located beside the moving contact rod and extending along the moving contact rod; when in a closed state, the angle θ between the repulsion generating section and the moving contact rod is less than 10 degrees, and the current in the repulsion generating section flows in the opposite direction to the current in the moving contact rod.

A compact lower-isolated environmentally friendly ring network cabinet switch includes: a support frame, which is composed of an upper support beam, a lower support beam, a left support plate and a right support plate, and is fixedly matched with each other by fasteners; a circuit breaker, which is arranged on the upper support beam, and the circuit breaker is provided with an insulating operating shaft of the circuit breaker, and the insulating operating shaft of the circuit breaker is provided with a cam; a copper bar connection shield, which is arranged on both sides of the cam, and an upper copper bar connection seat is arranged in the copper bar connection shield, wherein the copper bar connection shield realizes increasing the insulation capacity and protection capacity at the upper copper bar connection seat; a three-station insulating operating shaft, which is arranged between the left support plate and the right support plate, and a three-station knife switch is arranged on the three-station insulating operating shaft, and a three-station protective shield is arranged in front of the three-station knife switch; a grounding static contact, which is arranged below the three-station protective shield; and a lower copper bar connection seat, which is arranged on the lower support beam. The overall structure of the present invention has significant advantages in terms of reliability, operational safety, adaptability and space utilization in terms of structural design.

Disconnect switch arrangement of an electrical power transmission device with a disconnecting section (2) extending along an axis (5) that passes approximately perpendicularly through a first plane (1) and lies in or parallel to a second plane (14), and with an earthing switch (10) for earthing a contact side (3, 4) of the disconnecting section (2) by means of a movable earthing contact piece and a counter-contact piece (13) that is electrically contacted with the contact side (3, 4), characterized in that the earthing contact piece is movable on a path of movement which runs both obliquely to the first plane (1) and obliquely to the second plane (14).

To provide a branch busbar device which has higher safety concerning electrostatic and / or electromagnetic fields.SOLUTION: A branch busbar device (1) for high voltage arrangements is provided. The branch busbar device (1) comprises a first electric line (2) with a first electric contact area (3), and a second electric line (4) with a second electric contact area (5). The first electric contact area (3) is connected to the second electric contact area (5). A first field limiting part (6) is arranged at a first place adjacent to the contact areas (3, 5). A second field limiting part is arranged at a second place adjacent to the contact areas (3, 5). The first field limiting part (6) and the second field limiting part are electrically connected to the first electric line (2), the second electric line (4) or a third electric line of the branch busbar device (1).SELECTED DRAWING: Figure 2

A disconnector(100) and a switchgear(200) are provided. The disconnector(100) comprises a contact assembly(107) operable to change a status of a circuit, the disconnector(100) arranged in the circuit; shafts(101,102) adapted to be driven to rotate to operate the contact assembly(107); and a transmission unit(103) arranged between the shafts(101,102) and comprising: a plurality of gears(1031,1032) coupled to the shafts(101,102) to enable the shafts(101,102) to rotate with a mutual engagement of the plurality of gears(1031,1032); and a holding assembly(1033) adapted to hold radial positions of the plurality of gears(1031,1032) to ensure the mutual engagement of the plurality of gears(1031,1032). By arranging the holding assembly(1033) to hold the radial positions of the gears(1031,1032) to ensure the mutual engagement of the plurality of gears(1031,1032), only one input shaft(101) and one transmission unit(103) are enough to transmit large torques sufficient to operate the contact assembly(107), even in a case where the input and output shafts(101,102) are not coaxial. Accordingly, one sealing means is enough to well seal the disconnector(100). In this way, the complexity of assembly and costs are reduced.

The invention discloses a high-voltage metal-enclosed switchgear, which comprises a rotary upper isolating switch, a vacuum arc-extinguishing chamber (circuit breaker or load switch), a rotary lower isolating switch, a combined current transformer and a high-speed grounding switch which are respectively arranged from top to bottom, a moving contact of the vacuum arc-extinguishing chamber is fixedly connected to an eccentric wheel pull ring and an eccentric wheel cover which form a closed notch, the edge of an eccentric wheel is tangent to the inner side wall of the notch, continuous rotating motion is converted into reciprocating linear motion, and three current transformers and various electric conductors are embedded in the combined current transformer. The combined current transformer is provided with a thin-wall area, and pressure in the sealing bin is released in a directional mode. According to the invention, the arrangement of the upper and lower double-isolation switches and the high-speed grounding switch is realized, the multi-turn design of the current transformer is realized, the secondary load capacity and the accuracy level limit value coefficient of the current transformer are improved, the structure is simple, the cost is low, and the size is small.

The present invention relates to the technical field of electrical equipment, and specifically provides a grounding switch device for a high-voltage power distribution cabinet, comprising: a power distribution cabinet, a positioning carrier plate is installed at the inner bottom of the power distribution cabinet; an insulating pillar is provided on the top of the positioning carrier plate; protective covers are installed on both sides of the top of the positioning carrier plate; a servo motor is installed on one side of the protective cover through a bracket, and a guide plate is installed on the inner bottom of the protective cover; a positioning groove is provided at the front bottom of the power distribution cabinet, and a guide groove is provided at the inner bottom of the power distribution cabinet; the bottom of the guide groove is connected to the positioning groove. By using a protective cover to block the water droplets that may drip, and a scraper to collect the condensed water droplets, the water droplets falling on the grounding switch device are reduced, which solves the problem that the moisture in the air in the power distribution cabinet evaporates upward and condenses to form water droplets, and some water droplets fall on the grounding switch device, causing the grounding switch device to have a connected circuit or a short circuit.

A blade assembly for an electrical switch. The blade assembly including a rocker assembly configured to enable rotation of said blade assembly. The rocker assembly including: a first rocker component, said first rocker component having a first rocker pin, and a second rocker component, said second rocker component having a second rocker pin that depresses when said first rocker pin is depressed.

A high voltage air disconnect switch having an electrical load interrupter unit responsive to the opening of the high voltage air break disconnect switch. The electrical load interrupter unit including an actuating arm is contacted, during the opening of the switch, by a moving arc horn attached to and in electrical circuit with a switch blade of the high voltage air disconnect switch. The moving arc horn has operatively attached a spring catch which engages the actuating arm with a physical holding force applied to an electric contact point between the actuating arm and the moving arc horn to firmly capture the interrupter actuating arm against the moving arc horn during opening of the switch to prevent any arc burning damage due to arcing between the actuating arm and the moving arc horn as the switch opens.

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.

A switching apparatus comprising one or more electric poles. For each electric pole, the switching apparatus comprises a first pole terminal, a second pole terminal and a ground terminal. In operation, the first pole terminal can be electrically coupled to a first conductor of an electric line, the second pole terminal can be electrically coupled to a second conductor of said electric line and the ground terminal can be electrically coupled to a grounding conductor. For each electric pole, the switching apparatus comprises a plurality of fixed contacts spaced apart one from another. Such a plurality of fixed contacts comprises a first fixed contact electrically connected to the first pole terminal, a second fixed contact electrically connected to the second pole terminal, a third fixed contact electrically connected to the ground terminal. For each electric pole, the switching apparatus comprises a movable contact, which is reversibly movable about a corresponding rotation axis according to opposite first and second rotation directions, so that said movable contact can be coupled to or uncoupled from one or more of the above-mentioned fixed contacts. For each electric pole, the switching apparatus comprises a vacuum interrupter comprising a vacuum chamber, in which a fixed arc contact and a movable arc contact are enclosed and can be coupled or separated. For each electric pole, the switching apparatus comprises a motion transmission mechanism operatively coupled to the movable arc contact of said vacuum interrupter. The motion transmission mechanism is actuatable by the movable contact to cause a movement of said movable arc contact along said translation axis, when said movable contact moves about said rotation axis.

The invention discloses an isolating switch with a novel quartz sand barite toughened glass insulator, and relates to the technical field of electrical switch equipment, the isolating switch comprises a fixed base, the top of the outer wall of the fixed base is fixedly connected with a first insulator, and the top of the outer wall of the first insulator is fixedly connected with a first connecting seat; the outer wall of the first connecting base is rotationally connected with a knife switch, and the outer wall of the knife switch is movably sleeved with a grinding sleeve. By installing the polishing sleeve and the polishing sheet, cleaning of the surface of the movable contact sheet is realized, the problems of sharp increase of contact resistance and closing jamming caused by rusting of the movable contact sheet are solved, and stable and sufficient contact pressure between the movable contact sheet and the movable contact sheet is ensured.

The invention discloses an environment-friendly inflatable cabinet and a use method, and belongs to the technical field of switch equipment. The environment-friendly inflatable cabinet comprises an inflatable part and a non-inflatable part; the inflating part comprises an upper inflating compartment and a lower inflating compartment; a three-station isolating switch is mounted in the upper inflation compartment, a vacuum circuit breaker is mounted in the lower inflation compartment, and the upper inflation compartment is communicated with the lower inflation compartment through an insulator; the three-station isolating switch comprises a switching-on contact, a middle static contact, a moving contact and a grounding contact; the moving contact can be controlled to be in contact with or disconnected from the connection contact by adjusting the left movement of the moving contact, and can be controlled to be in contact with or disconnected from the grounding contact by adjusting the right movement of the moving contact. According to the environment-friendly inflatable cabinet, the problems of uneven electric field distribution and insufficient creepage distance under a low-pressure N2 / dry air insulating medium are solved by optimizing the layout of the inflatable compartments and improving the design of the three-station isolating switch structure and the operating mechanism, and the environment-friendly requirement is met at the same time.

The invention relates to a switch for a medium-voltage or high-voltage switchgear. The switch includes a first fixed contact, a second fixed contact, a movable contact, at least one bendable connector, and a contact drive. In an on state of the switch, the movable contact is in a position connecting the first fixed contact to the second fixed contact. In an off state of the switch, the movable contact is in a position where the first fixed contact is not connected to the second fixed contact. At least one bendable connector is connected to the movable contact. At least one bendable connector is in driving engagement with the contact. The contact drive is configured to pull the movable contact via the at least one bendable connector, and the contact drive is configured to push the movable contact via the at least one bendable connector. In a first mode, activation of the contact drive is configured to move the movable contact to a position such that the switch is in an on state. In a second mode, activation of the contact drive is configured to move the movable contact to a position such that the switch is in an off state.

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