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Invention relates to high-voltage instrument-making industry. The vacuum load-break switch contains: frame, with installed insulators, double-loop contact system, made as a circuit of main contacts and shunting circuit of arcing contacts; vacuum arc quench chamber; and lever shaft with a drive. According to the given invention the second additional break as a wedge device including a wedge segment, installed on nc contact, and splitting mechanism, is entered into a shunting circuit of arcing contacts. While the splitting mechanism has a retainer, rigidly connected with fixed arcing contact, and double-arm lever, pivotally connected with the named retainer and effecting the mobile arcing contact. |
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Internal gripping and blocking device for cut-out switch or circuit breaker Invention relates to gripping and blocking device for cut-out switch and circuit breaker. The device coupled with cut-out switch or circuit breaker, includes a main branch (1) of electrical current circulation containing the sectional switch (4), and additional branch (6) of electrical current circulation as a branching on the main branch. The additional branch (6) contains a fixed part (8), moving part (9) and vacuum bulb (10) in the place of coupling between the fixed part and moving part. Meanwhile the device is made so that the sectional switch actuates the moving part during one passing between the disconnected position and connected position of the device and has a gripping finger (24), designed with the possibility to go be engaged with the moving part of the additional branch and to keep it immovable outside of the mentioned pass section. |
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Electrical isolator comprises a body confining a hole made through it, the first electric contact set at the first end of the hole, the second electric contact set at the second end of the hole and able of moving. Design of the said second contact provides for timely movement through the hole for electrical connection with the first contact or disconnection from it. There are also at least two concave shields controlling the electric field and attached to the body at the respective hole ends and around the hole so that they are laid across the hole and the open ends of each shield are turned to each other. |
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Three-position drive for distribution device Invention relates to a distribution device. The drive comprises: a driving shaft of an opening switch, the first master gear, axially connected with it, the first slave gear engaged with the first master gear, two driving discs, two rotary shafts, a driving shaft of an earthing switch, the second master gear, axially connected with the driving shaft of the earthing switch, the second slave gear engaged with the second master gear, a disc of a Geneva-type mechanism, having a pair of grooves, where the first driving roller or the second driving roller enter and exit; and the main shaft for switching of the opening switch or the earthing switch in accordance with rotation of the disc of the Geneva-type mechanism. |
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Power circuit breaker and switching panel with power circuit breaker Multi-phase, in particular, three-phase, high-voltage power circuit breaker in a metal body with gas insulation comprises one pole (11, 12, 28) of a chamber of the power circuit breaker for each phase, which are jointly placed into one common body (21) of the power circuit breaker, and at least two connecting taps for each phase. The body (21) of the circuit breaker has such number of face ends of its chambers, which corresponds to the number of poles (11, 12, 28) of the circuit breaker chambers, in which poles (11, 12, 28) of the circuit breaker chambers are installed. Open face ends of chambers (29, 29a; 30, 30a; 31, 31a) are closed by means of dome-shaped covers (22, 23) so that gas connection between separate chambers (29, 29a; …) is provided via connection spaces formed by covers (22, 23). Also a switching panel is described with a power circuit breaker. |
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Switching device comprises a cam, a microswitch with two driving elements and a lever, one end of which is hingedly fixed on the microswitch body, and the other one is equipped with a roller capable of interaction with the cam. The end of the lever comprises a cog that may interact with one driving element during lever rotation. In the central part of the lever there is a screw installed rigidly, arranged as capable of acting at the other driving element in process of lever rotation. As the cam acts at the roller, the lever presses first one driving element, which indicates the position, and then the second driving element, which sends a signal to disconnect the electric actuating mechanism. |
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Inertial sensor comprises an inertial body placed in housing with the stop, pressed against one side of the stop and having a tail section at the side of the support surface. The sensor has a fixed contact in the form of the ring located on the other side of the stop and connected to one terminal and a movable contact which is fixed to the tail section of the inertial body and is connected by the flexible current distributor to the other terminal. |
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Magnetic threshold device comprises a permanent magnet, magnet cores adjacent to its poles and forming a working gap to place the anchor in it, the stop of the initial position of the anchor and the rod of magnetically soft material mounted in one of the magnetic cores with the ability to move parallel to the magnetisation direction of the permanent magnet. Each magnetic core is formed with a projection facing into the working gap, and the rod is made with the end part of the variable cross section and is mounted with the ability to move inside the opening made in the other magnetic core. |
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Supporting bracket (1) is designed for supporting of insulating rods (2) inside an insulating tube (3) of a hollow insulator. The bracket (1) comprises a cylindrical ring (4) with outer surface (5) for adjoining the inner surface (6) of the insulating tube (3), with inner surface (7) for supporting of insulating rod and two opposite end sides (8a) and (8b). The bracket (1) comprises an extension unit including a block made so that to be able of actuation in order to extend the cylindrical ring in at least one radial direction at the installation of the supporting bracket (1) into the insulating tube of a tank's active circuit breaker. |
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Vacuum switch comprises a steel base with vertical ribs and horizontal racks on which at least two identical phase modules divided by vertical ribs are installed in the upper and middle part of the casing. In the lower part of the casing there are blocking and synchronising shafts common for all modules and at least one deflecting electromagnet. The blocking shaft is connected to the shaft of the deflecting electromagnet and is fitted by a lever to which one spring end is attached. The second end of the spring is fixed on the base. Each of the phase modules comprises the following units installed in the upper casing part: a vacuum chamber with a stationary contact and a movable contact, current leads, supporting and traction insulators set vertically along the central axis of the module, a rod, an opening spring and a loading spring mounted coaxial to the rod, and a separate-phase linear electromagnetic drive mounted in the middle part of the casing. A drive armature is placed in the inner cavity of a stator and is fixed on the rod. The stator is fitted by an axial vertical slot. A fixing pin fixed on the rod is set in the slot and is able of moving. Each rod is coupled to the traction insulator by its upper end. The lower end of the rod is equipped by a rolling bearing and rests against an eccentric installed on the common blocking shaft. Rods of all phase modules are fitted by linear gear rims made so that to be able of engagement with the gears installed on the common synchronising shaft. |
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High-voltage power circuit-breaker with contact gap equipped with elegas-diverting elements Invention is related to a system of switching device with a contact gap (6), which is surrounded by an insulating nozzle (7) at least partially. The insulating nozzle (7) has a nozzle passage (8) included into the gas heating volume (10). Inside of the gas heating element (10) there is a deflector element (14a, 14b), which has support inside the defector channel (15a, 15b). |
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Invention is aimed at recording of applied linear accelerations in automatic systems of aircrafts and safety systems of vehicles. An inertia switch comprises a casing, an axial guide, an inertia block with radial projections set on the guide, a drive for contacts, movable rotary bushes set coaxially in each other and in respect to the inertia block which are fitted by inclined grooves in the side walls for the interaction with radial projections of the inertia block at its translational motion. The inclined grooves are inclined to the opposite sides. Permanent magnets are installed on the one of the bushes, and the bushes are made from nonmagnetic metal with high electric conductivity. |
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Invention is aimed at measurement of applied linear accelerations in the automatic systems of flying objects. An inertia switch comprises the following units set on the axis: a basic inertia block held by a magnetic system, and a movable rotary drive with a groove in the side wall and a bridging unit set on it and intended for switching of contacts of the contact system, a casing with a sloped groove with its angular length exceeding the angular length of the groove in the movable rotary drive by the angle sufficient for contact switching, two projections set diametrically on an additional inertia block made as a bush interacting with the casing groove and the movable rotary drive groove, the bush is mounted on the basic inertia block and is pressed by a spring in the axial direction with the possibility of mutual axial movement, the axial stroke of the basic inertia block in respect to the bush is not less than its possible axial stroke up to full stop, the force produced by the spring exceeds the force produced by the basic inertia block at the operating acceleration set point for which the inertia switch is adjusted, and the diametrical projections are fixed on the bush, the prominent inner ends of the projections are inserted in the circular grooving made on the basic inertia block. |
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Three-stage method of electrical switching Electrical switching is made by a vacuum circuit-breaker by means of three-stage contact breaking of the vacuum circuit-breaker. The maximum contact breaking rate is set for the first stage, at the second stage the breaking rate is decreased by at least five times and at the third stage the contact breaking rate is increased by at least twice. Duration of the first stage is set to 5-6 ms, duration of the second stage is set to 10-12 ms, and the third stage lasts till completion of the contacts travel. |
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On-off and switching mechanism Main structural component of a mechanism is a parallelepiped-shaped case square in its cross-section reacting to the atmospheric pressure. The case is made by moulding of an air-tight elastic resilient material, and it has four solid faces, fours elastic edges and two elastic domes instead of two end faces. The case is sealed and when vacuum is created it acts as a four-bar linkage deformed by the atmospheric pressure force into a rhomboidal parallelepiped with a sharp angle of 45°. Current-carrying rods and contacts are moulded into four edges of the parallelepiped. When the rectangular parallelepiped is deformed to the rhomboidal one, the contacts of the four rods are closed by pairs and switch on two electric circuits. The parallelepiped is switched off or reswitched by hand deforming back to the rhomboidal parallelepiped with an angle of 45°. Due to the variable volume of the parallelepiped the atmospheric pressure acts on it as a spring making its jump-like turning to 90°. At that the other two pairs of contacts are closed and the other two electric circuits are switched on. Thus, the atmospheric pressure force ensures required contact pressing, follow-through and roll, large velocity of contacts separation and a large gap between them. |
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Feed line circuit breaker with vacuum switching chamber Circuit-breaker includes a parallel branch (4) with coupled vacuum chamber (6) for current switching. The branch does not function in normal conditions, at that current passes through it only when the circuit-breaker (2) starts its breaking action due to increase of current transfer from the main power line (1) to the branch (4). Thus the vacuum switching chamber (6) remains at rest in normal operating conditions. |
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Hybrid gas-blast circuit breaker for switchgear with sf6 gas insulation Circuit breaker comprises fixed part with arc contact part, and moving part with cylinder. It incorporates piston fitted in cylinder, blow chamber and heat expansion chamber composed by separation wall. Besides, it includes working electrode extending through piston inner part and cylinder. Besides, moving part comprises arc contact part of moving part to be displaced right up to fixed part arc part. One side surface of separation wall is equipped with moving valve including tight-contact part and moving part. Tight-contact part is displaced by pressure difference and tightly pressed against the separation wall. Moving part extending from tight-contact part allows working electrode passage there through and expansion chamber opening/closure. |
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Invention relates to controlling an electrical switch having two breakers, such as an earthing disconnector and a bus disconnector. According to the invention, the switch includes a common actuator (22) for movable contacts of breakers, which is designed to open one of the breakers while leaving the other closed and vice-versa. In the mechanism, the shape, size and arrangement of movable contacts (200, 210) and actuators thereof (22, 220, 221, 2210, 2211, 2220, 2221, 222, 223) enable the movable contacts to cross on rectilinear paths. |
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Switchgear with sf6 gas insulation Invention is related to electric engineering, to switchgears with SF6 gas insulation. The device contains a movable contact in the upper wire so that is can be moved linearly in regard to the upper contact; a fixed contact in the lower wire. The movable contact is made as a strip contact. The protective means for the movable contact is fixed to the upper wire, it contains a strip contact of the movable part and has an open end that ensures passing of the movable contact through it. The fixed contact is made as a strip contact and it can be connected optionally to the strip contact at the movable part by the movable contact. The protective means for the fixed contact is fixed to the lower wire, it contains the fixed strip contact. An isolating screening element can lock the open end of the protective device for the movable contact optionally and close the end of the movable contact when the movable contact is separated from the fixed contact. |
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Vacuum circuit breaker with terminal clamps rigidly fixed to buses at both sides Vacuum circuit breaker contains a vacuum chamber (2) with a switch contact consisting of a fixed contact element that is in contact with a terminal clamp (11) of the fixed contact, as well as a movable contact element and a drive unit (7). A switching mechanism (4) is connected to a drive unit (7) and the movable contact element. Connective means in contact position connect electrically a terminal clamp (13) of the movable contact with the movable contact element. The connective means have a screw terminal (16, 17) consisting of an input screw terminal element (16) connected to an electroconductive section of the switching mechanism (4) and the matching screw terminal element (17) connected rigidly to the vacuum chamber (2) and electrically to the terminal clamp (13), which are located so that the input screw terminal element (16) in result of a driven motion is clamped with the electroconductive section by the matching screw terminal element (17). |
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Repeatable high-current contactor Invention is related to repeatable high-current switching equipment operated in direct and alternating current circuits and can be used in power supply systems of electrophysical installations. High-current contactor contains the inner and outer coaxial and fixed contact electrodes, a movable disc-shaped contact electrode with a circular contact and an inductor coil placed in a dielectric casing with casing cover installed on the top, above the inductor coil. The circular contact is made of separate independent lamellae and fixed at the turntable of the movable contact electrode. Resilient members are inserted between the turntable and lamellae. The fixed contact electrodes are removable and equipped with cooling channels. Plates made of high-conductive material are fixed to contact surfaces of the movable and fixed contact electrodes. The casing cover installed above the inductance coil has an inner cavity and is connected via a number of openings made in the inductor case with space above the movable contact electrode. At that in the fixed inner contact electrode there is a cavity increasing the gas space over the movable contact electrode and in the inductor case there is a gas valve installed in the case axial part. |
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Method of locating object made of magnetic material and apparatus for realising said method Invention relates to switching equipment and specifically to methods and apparatus which enable to locate an object made of magnetic material and control a constant magnetic field in three planes. The method of locating an object made of magnetic material, which involves using a housing made of nonmagnetic material, a magnet which generates a constant magnetic field for at least one magnetically controlled element located in at least one plane, facilitating interaction between the magnetically controlled element and the magnetic field in at least one plane, further forming a chamber with a cover in the housing made of nonmagnetic material, followed by filling with a damping fluid, and the permanent magnet is made in form of a body of revolution with diametrical magnetisation and is placed in the chamber in a free state, capable of rotating in at least one plane, providing the object with access to the housing in three planes, recording change in orientation of the permanent magnet in at least one plane, and the body of revolution is made in form of a sphere or a cylinder or a disc or a ring. |
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Inspection window and earthing terminal for high-voltage system Invention relates to a high-voltage system (10), having at least one switching device (20), a housing (300) and a drive (200) for the switching device. According to the invention, the housing (300) has a first housing opening (320) an a second housing opening (330), both openings being suitable to accommodate an inspection window (350) or an earthing lead (50), as chosen. Both housing openings (320, 330) and the inspection window (350), fitted in one of said openings, have such dimensions and are directed such that the inspection window allows recognition from the outside of both the position of a first electrical contact of an element (110) of the switching device (20), which enables to connect the first terminal lead (30) and the second terminal lead (40) to each other, and the position of a second electrical contact of the element (120) of the switching device (20), which enables to connect the first terminal lead (30) and third terminal lead (50) to each other. |
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Gas interrupter of a circuit includes a fixed part, a movable part, a piston and a double compression mechanism. The fixed part comprises a fixed arc-quenching contact and the first fixed closer. The movable part comprises a movable arc-quenching contact, which selectively contacts with the fixed arc-quenching contact, a cylinder, where the movable arc-quenching contact is located, and the second fixed closer, which guides motion of the cylinder. The piston is arranged in the second fixed closer. The double compression mechanism is made to move the piston in direction opposite to the direction of movable part motion, when the movable part moves to separate the fixed arc-quenching contact and the movable arc-quenching contact for interruption of the damage current. |
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Invention relates to a vacuum switching lamp (1) with a body, which has two sections (16, 17) of the body from insulating material that are placed and made symmetrically relative to the middle plane (S). Each of both sections (16, 17) of the body from insulating material includes several parts (9, 10, 11, 12, 13, 14) of the body from insulating material. A part (9, 12) of the body from insulating material of each section of the body from insulating material placed most distantly from the middle plane (S), has length (L1), which is more than the length (L2, L3) of other parts (10, 11, 13, 14) of the body from insulating material. |
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Relay of control system of gearbox switching System includes a gearbox circuit with an actuating mechanism, a control switch of electric current flow via the gearbox circuit, a control circuit, and a control element. The actuating mechanism actuates an electromagnetic valve. The control circuit allows actuation of the switch. The control element has the possibility of performing alternating actuation of the gearbox circuit and the control circuit. The method consists in the fact that the control element is activated. At activation of the control element alternating actuation of the gearbox circuit and the control circuit is performed to control electric current flow in the gearbox circuit. |
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Contact for vacuum interrupter Contact for a vacuum interrupter includes many cutouts passing to outer peripheral surface from many positions distanced relatively from the centre of contact surface; lug formed between a pair of adjacent cut-outs so that to minimise mechanical fragility of the part with small width in the lug inducing arc rotation. Each part of cut-out contains the following: the first end part closed and adjacent to the centre; the second end part open and adjacent to outer peripheral surface; the first part of cut-out passing linear from the first end part; and the second part of cut-out passing linear to the second end part bending from the first part of cut-out at the specified angle which is larger or equal to 30 degrees and is smaller or equal to 60 degrees. Distance from the first peripheral surface of the central recessed part of contact to the first part of cut-out is equal to the specified first distance which is more than zero and less or equal to 5 mm. |
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Switch comprises lever controlled to displace between ON position to actuate said tool and OFF position to stop said tool, ON position locking mechanism, OFF position locking mechanism and interlocking control element. ON position locking mechanism locks switch lever at ON position. OFF position locking mechanism locks switch lever at OFF position. Interlocking control element rests on switch lever to displace therewith in lever displacement. Interlocking control element is controlled in first direction to actuate ON position locking mechanism and in second direction to unlock locking mechanism in OFF position. Note here that first direction differs from second direction. |
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Vacuum interrupter for vacuum circuit breaker Attracting element is provided, made from ferromagnetic material, to form a space between a fixed electrode and a movable electrode to attract a radial magnetic field generated in radial direction between a fixed electrode and a movable electrode by means of an attracting element. On the outer circumferential surface of the isolated container there is a support groove formed in a stepwise manner to support an attracting element inserted in it, in the axial direction, which is a direction for movement of a movable electrode. Height of the attracting element in the axial direction is not less than the maximum distance between the fixed electrode and the mobile electrode. At the same time a component of the radial magnetic field in a common horizontal direction between a fixed electrode and a mobile electrode may be increased. |
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Method to determine moment of time of switching of electric switching device Time characteristic of voltage is determined, established in a gap (1) within the sample time interval (t1). From the time characteristic they determine resonant frequency of an oscillating circuit, and a time window is determined from it (Δt). The moment of switching time is set by definition of a transition via zero of an envelope in the future characteristic calculated on the basis of a time characteristic, after a time interval (t2) following the process of disconnection, in the time window (Δt). In the alternative version of the method the moment of time of switching is set by determination of weighted transition through zero in the time window (Δt) after the time interval (t2) following the process of disconnection. |
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Direct action drive motor is designed to turn a vacuum switch on and off. The drive has an electric motor which, directly or through a reducing gear, rotates a cam in form of a disc which has areas with a narrow and high profile, as well as a disconnection spring, a mechanical latch and a lever mechanism, the levers of which are connected to movable contacts of vacuum arc-quenching chambers and with the disconnection spring, and which performs swinging movements between on and off positions. One of the levers is attached to a roller on which the cam presses with an area with a high profile during its rotation and when performing the turn-on operation. The lever mechanism can be held in an on position by the mechanical latch. The turn-on operation involves coiling the disconnection spring and the turn-off operation occurs upon triggering the mechanical latch and turning the lever mechanism under the action of the recoiled disconnection spring in the off position. The lateral surface of the cam has a protrusion, and the lever mechanism has an additional arm which, during rotation in the on position, interacts with the protrusion and stops rotation of the cam in a position when its area with a narrow profile lies opposite the roller. |
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Method for training of contact gap for vacuum circuit breakers by high voltage Training method is implemented by direct-current high voltage feeding to complete gap between contacts in stages starting from 0.3-0.5 of rated operating voltage. Simultaneously permanent magnet field is created along direction of the gap and its intensity value is increased smoothly from zero up to prebreakdown current moment of about 0.6-0.8 of breakdown current at test voltage. The gap is hold at set voltage equal to 2-3 times of prebreakdown current measured at the beginning till drop, at the first training stage. Magnet field intensity is decreased up to zero and the next stage of training voltage is set. Value of field intensity is increased again from zero up to prebreakdown current available at the first stage. The above cycle is repeated at the next stages. At the last stage training voltage is set as 1.2-1.5 times bigger than testing voltage. The process is repeated at reverse polarity of high voltage applied to the gap and reverse direction of permanent magnet field. |
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Flexible shunt for vacuum circuit breaker Flexible shunt is designed to provide a pathway between movable electrode segment and terminal of the main circuit in vacuum circuit breaker. Flexible shunt contains a pair of conductive plates. Each plate contains the following: connecting area of clamp configured as a flat conductive element connected to clamp; connecting area of terminal segment configured as a flat conductive element connected to terminal segment; flexible arched area capable to connect connecting area of clamp to connecting area of terminal segment. Flexible arched area is configured in the medium part of each conductive plate so that it can protrude outside before installation of a flexible shunt in vacuum circuit breaker. |
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Bimetallic unit for automatic circuit breaker Bimetallic unit comprises the following: a heater, connected with a mobile contact, to which energy is supplied; and a bimetallic element having one end section communicating with the heater and arranged to be located at the distance from the heater. The heater comprises the following: a communicating section, communicating with the bimetallic element; a separated section distanced from the bimetallic element to a certain distance; and a connecting section that connects the communicating section and the separated section. There is at least one ledge that stretches from the separated section in direction to the bimetallic element. |
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SF6 circuit breaker comprises an arc-quenching device made of two coaxially arranged contacts, at least one of which is mobile, and of an electric insulating arc-quenching nozzle arranged coaxially around contacts and made of separate elements made of different materials. The arc-quenching device of the circuit breaker additionally comprises a support tubular element fixed on one of the contacts. The electric insulating arc-quenching nozzle and a support tubular element represent a single device made of separate elements of an arc-quenching nozzle fixed on the inner surface of the support tubular element. |
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High voltage breaker-disconnector High voltage breaker-disconnector comprises at least one pole (1) with a drive (2), a grounding mechanism with grounding knives (4) and a drive (5), a system of pole traction rods (3) and a blocking device (6). The blocking device is installed in a separate body and comprises a lever (8) installed on a shaft and connected with a system of pole traction rods. Besides, the blocking device is equipped with an additional shaft (15) with a slot (16), the lever is made as double-arm with an arch-shaped edge (10). One arm of the lever is connected with the system of pole traction rods, and the additional shaft is connected with the drive of the grounding mechanism. The arch-shaped edge of the lever kinematically interacts with the slot of the additional shaft. In case of connected position of the grounding mechanism the double-arm lever rests against the additional shaft of the blocking device. |
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Contact unit for vacuum interrupter Contact unit for a vacuum interrupter includes a fixed contact; a fixed electrode connected to the fixed contact; a moving contact moved to the first position, in which the moving contact is brought into contact with the fixed contact, and the second position, in which the moving contact is separated from the fixed contact. The moving electrode is connected to the moving contact and moved with the moving contact. A contact supporting element is installed so that it can contact the moving contact in a circumferential direction of the moving electrode and enlarge the contact surface area providing contact of the moving contact together with the moving electrode to reduce the stress applied to the moving contact and to the moving electrode when the moving contact moves to the first position. |
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Medium voltage switchgear cell Medium voltage switchgear cell is made so that it can be installed between two parts of electric circuit in order to implement at least functions of current passing between these parts, current interruption between these parts, circuit decoupling and grounding. The cell contains switch (or automatic circuit breaker) (1) with vacuum breaking technology which also performs a function of disconnecting switch and selector (2) connected in-series to switch (or automatic circuit breaker) (1). Selector (2) has at least two positions respectively: current flow position and grounding position for one of circuit parts. Switch (or automatic circuit breaker) (1) is connected electrically from line side to bus and from load side to selector (2), which is connected electrically from load side with at least one cable or bus. The cell can be in three positions: closed, open and grounded positions respectively. |
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Controller for overheating protection of vessel purposed for liquid heating Controller contains a control element, monolithic double-acting bimetal actuating mechanism located at the upper surface of control element and two groups of changeover contacts placed at control element; each group of changeover contacts interact with respective actuators. Joint monolithic double-acting bimetal actuating mechanism consists of two joint actuators which are relatively independent and made of bimetal sheet. Edge line of each of two actuators is located partially at inner side of the edge line of another actuator. At that bimetal actuating mechanism has common connecting part, which is located at inner side of edge line of each actuator and forms effectively out of two actuators joint monolithic heat sensitive and bimetal double-acting actuating mechanism. |
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Controller for overheating protection of vessel purposed for liquid heating Controller contains a control element, monolithic double-acting bimetal actuating mechanism located at the upper surface of control element and two groups of changeover contacts placed at control element; each group of changeover contacts interact with respective actuators. Joint monolithic double-acting bimetal actuating mechanism consists of two joint actuators which are relatively independent and made of bimetal sheet; edge lines of two actuators are separated from each other and outside auxiliary connector is located between edge lines of two actuators. At that outside auxiliary connector is located beyond edge lines of two actuators and forms effectively out of two actuators joint monolithic heat sensitive and bimetal double-acting actuating mechanism. |
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Explosion-proof switching device Explosion-proof switching device contains explosion-proof jacket (1) made of magnetically conductive material, matrix (2) with n autonomous magnetosensitive elements (3), signal-processing circuit (4) that includes amplitude selector-shaper (5), coder (6) and decoder (7) and also common portable permanent magnet (8). |
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Column gas-filled circuit breaker Column gas-filled circuit-breaker contains hollow base insulator, the second insulator, arc suppressor placed inside the second insulator, drive connected to arc suppressor by insulating pull-rod passing inside hollow base insulator, exhaust pipe placed in the same insulator and electric heater under its base. The second insulator is fixed at hollow base insulator by means of flanges with current lead located in-between them to arc suppressor. The other current lead to arc suppressor is fixed at the upper flange of the second insulator. Inside the second insulator there is the second exhaust pipe located in-between current leads around arc suppressor. Parts of current leads inside insulators are made with slots and/or channels. |
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Vacuum dead-tank circuit breaker Vacuum dead-tank circuit-breaker contains at least one gas-filled tank with a hollow insulator inside thus forming a sealed chamber and vacuum arc-quenching chamber (VAQC) consisting of insulator with two flanges, at that one flange is connected hermetically to the first flange of the hollow insulator. Inside VAQC insulator there are moving and fixed contacts and bellows connected hermetically to the flange of VAQC insulator; insulation traction is connected to the moving contact; it passes through VAQC bellows and moving unit of the hollow insulator. At that the second flange of the hollow insulator is connected hermetically to gas-filled tank of the circuit-breaker. |
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Capacitance sensor element, method of its manufacturing and capacitance device of contact detection Capacitance sensor element (10) comprises a base (1) in the form of a film or a plate, which is formed from an insulating material and has flexible or spatial shape, an electrode (2) of detection, arranged at least on a part of one surface of the base (1) and formed from a translucent conducting layer, comprising a carbon linear nanostructure, such as a carbon nanotube, and an outlet wire (3), which is an outlet from the detection electrode (2). The capacitance device of contact detection comprises a sensor element (10) and a circuit (60) to detect variation of capacitance, which is electrically connected with the detection electrode (2) via the outlet wire (3) and which determines variation of capacitance caused by approaching of a human body to the contact surface (4) or contact of a human body to the contact surface (4). The detection electrode (2) may be coated with a protective film, and the surface of the protective film may be used as the contact surface. |
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Device contains housing, contact system, bypass device with current-conducting sectors interacting with contacts located in circumferential direction, electromagnetic drive in the form of multi-pole polar relay, rotor in the form of armature and physical parameter sensor, electrically connected to electromagnetic drive. Armature is point-connected to axis via link mechanism, on the axis there rigidly fixed is bypass device. Armature is of disk form with teeth arranged evenly around the perimetre interacting with teeth of housing annular projection. Armature interacts with multi-pole polar relay. Each relay pole has corresponding tooth of housing annular projection. Teeth on annular projection are arranged evenly. Mechanical interaction of one of armature tooth with annular projection tooth corresponding to the pole provide possibility of stepped turn of axis with bypass device. |
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Check method of vacuum circuit breaker of traction current rectifier functioning Invention relates to check method of functioning of vacuum circuit breaker (12) of traction rectifier with at least one four-quadrant actuator (2) of network side and pulsed rectifier (4) of load side, which are electrically connected in parallel via capacitor (CZK) of intermediate loop on the side of steady voltage; and with traction transformer (10) with at least one secondary winding (8), which outlets are connected to outlets (16, 18) of alternating voltage side of actuator (2), and which primary winding has possibility of connection to circuit alternating voltage (u N) via vacuum circuit breaker (12). When circuit breaker (12) is opened, actuator (2) is controlled exactly when circuit alternating voltage (u N) is located in time relative to input voltage (u St) of actuator, so that differential voltage (Δu), determined between circuit alternating voltage (u N) and input voltage (u St) of actuator, complies with predetermined test voltage by amplitude. Then it is checked whether current flows from supply mains to actuator (2). |
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Terminals for vacuum circuit breaker and vacuum circuit breaker with such terminals Terminals for vacuum circuit breaker include: the first terminal with lots of support rings, lots of pin contactors and ring-shaped springs installed with possibility of contact with outer circumferential surface of pin contactors, so as to provide pin contactors with elastic force; the second terminal with outer diameter larger than inner diameter of the first terminal formed by inner circumferential surface of pin contactors of the first terminal and configured by electrical conductor of sleeve type; and insulating guide element fixed with possibility of detachment on leading end of the second terminal, so that electrical-insulating property of the second terminal increases when the first and the second terminals are disconnected from each other, it has electrical-insulating property and narrows, so as to have reduced outer diameter when distance from the second terminal increases. |
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High voltage circuit breaker with blowout chamber (versions) Circuit breaker contains support insulator (20); at least one horizontally arranged disjunctor (10) of prolonged shape placed on support insulator (20); current taps (30) connected to the ends of disjunctor, in some versions there is horizontally arranged capacitor (50) and/or resistor (60) of prolonged shape connected between current taps parallel to disjunctor (10); at least one corona ring (40) located at least partially around one of current taps. Corona ring (40) is located so that vertical distance (d1) between inner surface of lower part of corona ring and the central axis (10a, 50a, 60a) of disjunctor (10), specified capacitor (50) or additional resistor (60), depending on their position, is about 1.5-4 times less than distance (d2) between inner surface of upper part of corona ring and the central axis. |
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Method of making contacts of vacuum arc-quenching chambers Powdered mixture and a workpiece of a high-electroconductivity material are placed in a vacuum chamber, where the powdered mixture is deposited in form of a coat on the workpiece by electron-beam deposit welding in a vacuum. Further electron-beam remelting of the entire volume of the fused coating is carried out in a single process cycle with deposit welding. |
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Circuit breaker of power supply on pressure Circuit breaker of power supply on pressure comprises a housing, in which an elastic element with a rod is located, as well as an electrical contact mechanism, a power spring, an adjusting gear, and it is additionally provided with a locking mechanism and transfer mechanism which are located between the elastic element and the electrical contact mechanism and are connected to the latter via the push rod. |
Another patent 2528756.