175results about "Switches with movable electrical contacts" patented technology

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.

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.

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.

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.

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.

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

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.

Provided is an input device capable of easily realizing an improvement in reliability. In an input device according to one embodiment of the present invention, at a contact part, the input device is capable of moving in a first direction in which a drive electrode approaches a fixed electrode, and a second direction in which the drive electrode separates from the fixed electrode. A drive mechanism is located more toward the second direction side than the contact part, and moves the drive electrode by means of movement of a drive shaft. The drive mechanism has a drive part and a closing-side braking part. The closing-side braking part includes a collision part, a braking mass, a closing-side braking part spring, and a closing-side braking part stopper. The closing-side braking part brakes the drive electrode moving in the first direction when the drive part has moved the drive electrode in the first direction during execution of an input operation. During execution of the input operation, the collision part moves in the first direction together with the drive electrode and contacts the braking mass, and thereby the drive electrode is braked. The closing-side braking part spring biases the braking mass so as to impart a returning force toward the second direction, and the closing-side braking part stopper restricts the braking mass from moving in the second direction during a steady state.

A vertical break disconnector for electrical connection or disconnection is described. The vertical break disconnector is provided with a first and second housing unit with one or more contacts for electrical current conduction. The first housing unit supports an engagement mechanism to engage or disengage with the one or more contacts of the first and second housing unit to electrically close or open the vertical break disconnector. The engagement mechanism includes a conducting element pivotably coupled to the first housing unit at a first end of the conducting element over a rotating shaft a rotating lever mounted on the first housing unit and a connecting link mounted on the first end of the conducting element to couple the conducting element to the rotating lever. In operation, the rotating lever causes the conducting element to turn and twist to electrically close or open the vertical break disconnector.

The invention relates to a switching arrangement (1) of a disconnect switch (1) for three-phase alternating current. The switching arrangement (1) comprises an electrical fixed contact (3) for each phase of the alternating current, at least one corresponding electrical moving contact (5, 6) for each fixed contact (3), which is movable between an off position, in which it is separated from the fixed contact (3), and an on position, in which it is in contact with the fixed contact (3), and an insulating element (7) made of an electrically insulating material. The insulating element (7) has a plate-shaped first region (13) which has a recess (19) for each fixed contact (3), through which the fixed contact (3) extends to the at least one corresponding moving contact (5, 6).The first area (13) of the insulating element (7) has a first surface (21) facing away from the moving contacts (5, 6), from which two second areas (15) protrude, between which first sections (25) of all fixed contacts (3) are arranged.

The utility model discloses a moving contact contact seat assembly for a double-break disconnecting switch, which comprises a shell and a moving contact contact seat assembly arranged in the shell in a matching manner, the moving contact contact seat assembly comprises a first mounting cavity, the axis of the first mounting cavity is vertical to that of a second mounting cavity, and the first mounting cavity and the second mounting cavity are arranged side by side along the radial direction to form a communication structure; the axis of the third installation cavity is perpendicular to the axes of the first installation cavity and the second installation cavity in different planes, the third installation cavity, the first installation cavity and the second installation cavity form a through structure, the first moving contact is installed in the first installation cavity, and the second moving contact is installed in the second installation cavity. The third mounting cavity is provided with a transmission shaft for driving the first moving contact and the second moving contact, so that the double fractures of the double-fracture isolating switch are arranged in an angular shape; according to the design of the moving contact seat, the length of the double-break isolating switch is greatly reduced, and the requirement of compact arrangement of GIS intervals can be met.

The present invention relates to a DC disconnector and parts thereof. An aspect of the disclosure provides a DC disconnector comprising: one or more static electrical contacts; one or more corresponding movable electrical contacts connected to a drive bar; wherein the drive shaft is configured to actuate the drive bar between: a first position wherein at least a portion of each of the one or more movable electrical contacts abuts one of the one or more static electrical contacts; and, a second position wherein each of the one or more moveable electrical contacts is vertically displaced by a vertical displacement from each of the one or more static electrical contacts; wherein the drive bar is configured to be operable in an air configuration in a first orientation and a vacuum configuration in a second orientation, wherein the separation between the one or more moveable electrical contacts and the static electrical contacts in the second position is greater in the air configuration than in the vacuum configuration.

The utility model discloses an isolating switch operating mechanism and an isolating switch, comprising an operating frame, an operating shaft, a motor, a transmission gear assembly and a switching fluted disc, the switching fluted disc is in linkage connection with the transmission gear assembly, the operating shaft is connected with a shaft coupling turntable, the switching fluted disc is provided with at least one toggle column, and the operating shaft is connected with the shaft coupling turntable. The shifting column is located on the side, close to the coupling rotary disc, of the switching fluted disc, a transmission groove is formed in the coupling rotary disc, and the shifting column and the transmission groove are located on the same acting plane. When the shifting column rotates along with the switching fluted disc, the shifting column enters the transmission groove and leaves the transmission groove, and when the shifting column enters the transmission groove and acts on the inner wall of the transmission groove, the shaft coupling rotating disc is driven to rotate so as to achieve electric switching-off and electric switching-on of the operation shaft. A plane meshing structure of the shifting column and the transmission groove is adopted to replace a traditional complex clutch assembly, the number of parts is obviously reduced, the mechanical failure rate is obviously reduced, meanwhile, multi-part transmission accumulative errors are eliminated, and the transmission stability is effectively improved.

A switch includes: a vacuum valve (40) electrically connected to a first conductor (10); a linkage (60) fixed to the vacuum valve (40); a unidirectional rotational-transmitter (80) attached to the linkage (60); a fixed contact electrically connected to the first conductor (10); and a movable contact electrically connected to the second conductor, wherein the linkage (60) includes: a first link (61); a second link (62) rotatably fixed to the first link (61); and a third link (63) having one end portion (631) and another end portion (632), the one end portion (631) being rotatably fixed to an intermediate portion (624) of the second link (62), the another end portion (632) being rotatably fixed to a movable-side electrode (43), and the unidirectional rotational-transmitter (80) is electrically connected to the movable-side electrode (43), and is rotatably fixed to the second link (62) and disposed on a movement locus of the movable contact.

The utility model provides a switch contact which comprises a moving contact, the moving contact comprises a first contact and a second contact which are oppositely arranged, two ends of the first contact and two ends of the second contact are provided with clamping gaps used for clamping a static contact, and the moving contact further comprises at least two elastic buckling pieces. The at least two fasteners respectively clamp the first contact and the second contact, each fastener comprises an upper portion, a lower portion and a side portion, the upper portion and the lower portion are oppositely arranged at intervals, the side portion is connected with the upper portion and the lower portion, the side portions are opposite to the side edges of the first contact and the second contact, and the upper portion and the lower portion are arranged on the two opposite faces of the first contact and the second contact. The first contact and the second contact are clamped, the first contact and the second contact are provided with a plurality of elastic buckling pieces, elastic pieces do not need to be arranged independently, cost is saved, and assembling is simple.