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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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Mechanism of movable spring for knife switch Device with movable contacts for a circuit breaker comprises a rotary shaft that moves support rods. In the upper part of each support rod there is a vertical hole, and in the lower part there is a transverse hole. Support rods are connected as capable of rotation with a rotary shaft with the help of a shaft stretching via transverse holes. In the device there are also Y-shaped contact levers, every of which has contacts and an axial lever, installed into a vertical hole of the appropriate support rod for connection with the possibility of rotation with the support rod. Number of Y-shaped contact levers is equal to number of support rods. Besides, in the device there are elastic elements, one end of which is connected to the axial lever of the appropriate Y-shaped contact lever or the appropriate support rod, and the other end of which is connected to the rotary shaft that drives the support rods by means of elastic elements. |
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Circuit breaker for low-voltage networks According to the invention, a circuit breaker includes outer casing (2) that contains for each pole at least one fixed contact (10) and at least one movable contact (20), which are capable for mutual connection and disconnection. The device also includes control mechanism (30) containing support frame (31) that supports a kinematic chain that is in-line connected to the movable contact so that the latter can be connected to or disconnected from the fixed contact. The support frame includes a pair of sides (134) connected by means of the first transverse connection section (21) and an additional connection device, which determines an additional transverse connection section in the position that is different from the position of the first transverse connection section. |
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Low-voltage switch (1) for opening and closing electrical contacts with thermal protection system (3) of bimetallic type is provided with uncoupling lever (5) that actuates forced contact opening device (2), bimetallic element (4) with restrained part (4a) and free part (4b) capable of intercepting uncoupling lever (5), as well as calibration device (6) of position of bimetallic element (4), which includes pusher (7) borne against bimetallic element (4). With that, pusher (7) is movable under action in axis direction and under action in circumferential direction. |
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Bistable miniature high-capacity relay Bistable miniature high-capacity relay includes a housing from insulating material, which has the first chamber (1b) of the housing, in which single-phase contact unit (4) with two current buses (8a, 8b) and contact spring (13) is located. One end of spring is constantly connected to one current bus (8a), and the other free end containing at least one movable contact has the possibility of interacting at least with one fixed contact (21) located on the second current bus (8b). In the second chamber (1a) of the housing there located is bistable electromagnetic drive (3) with swinging armature (11), which has the possibility of moving spring (13) by means of drive mechanism (6, 23) installed in the housing to close or open an electrical circuit passing through current buses (8a, 8b). Contact unit (4) and drive assembly (3) are located in the housing from insulating material in one or two planes. Contact unit (4) includes multiplate contact spring (13) having U-shape and forming a current circuit, in which electrodynamic forces act. Drive assembly (3) includes one-piece U-shaped yoke (14) with at least one excitation coil (17) on each magnetic rod of the yoke, as well as a central rod of yoke (16) that is supported from a flat constant magnet supporting in its turn swinging armature (11) having V-shape. |
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Invention relates to modular electric apparatus. Modular electric apparatus (2) includes the following: the main box-like housing with two opposite walls; distance between them has modular size (W2; connecting lever (3) projects to the side from the main housing (10, 11) on the side of one (13) of the above side walls to connect electric apparatus (2) to the additional electric apparatus; connecting lever (3) includes the first section (20) kinematically connected to the above main housing (10, 11) and the second section (21) intended for detachable connection to the first section (20) to provide the possibility of elongation of the above first section (20) to adjust the length of the above connecting lever (3) according to the modular size of the above auxiliary electric apparatus (4). |
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Invention relates to electrical engineering. Switchgear features magnetic opening system (1) including at least one armature (2), one coil (3), one yoke (4) and one yoke bushing (5). Armature (2) and yoke bushing (5) are almost coaxial, and coil (3) is located almost around armature (2) and/or yoke bushing (5). Yoke (4) is positioned around coil (3), and armature (2) is intended at least for indirect opening of switchgear opening device. The result is achieved by yoke busing (5) consisting of at least one first bent part (6) positioned inside second bent part (7). |
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Charge for production of material for high-current contacts and method of its production Proposed composition contains the following substances, in wt %: copper particles - 20-85, titanium hydride particles - 1-10, graphite particles making the rest. To make material billet, this charge is sintered by feeding electric current pulses there through, current density making 200-500 A/mm2, with simultaneous single-axis reduction. |
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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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Invention refers to mycrosystem engineering and manufacturing of micromechanical resonators with electrostatic control for transducer and sensor devices and microrelays switching SHF and LF electric analogue circuits. System includes micromechanical actuator, microelectronic DC converter, vibrating element in the form of mini-piezoelectric resonator, self-oscillation resonance circuit, feedback line, phase changer, capacitor, integral logic CMOS elements, hard plate and tensile suspensions. |
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Method of material manufacturing for arc-quenching and electric break contacts and material Method involves mixing graphite particles clad with niobium carbide or chrome carbide and copper or copper allow powder at the following component ratio, wt %: graphite particles 5-20, chrome or niobium carbide 5-20, copper or copper alloy takes up the rest, with graphite to carbide ratio comprising 0.9-1.1, forming a blanc part out of the mix by pressure compression to density of at least 70% of theoretical value, and further blanc part caking by electric current pulses of 100-300 A/mm2 density with simultaneous uniaxial squeezing of the material. |
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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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Proposed tool has motor, case, handle damping material, manual working element mode selector, movable element and resilient element. Damping material is arranged between case and handle to connect them so that both can displace relative to each other in axial direction of bit. Manual working element is driven by motor, arranged at said handle and shifted from ON position to OFF position. Mode selector is arranged and tool case to select between first mode whereat said bit is continuously operated and second mode whereat it is driven selectively. Movable element can shift said bit with the help of said mode selector. Resilient element is arranged at vibration transfer path. Said resilient element prevents vibration transfer to handle with mode selector at first ON mode and locks the working element at movable element IN position. |
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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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Magnetically-operated switchboard Device contains current-carrying elements and magnetic material, a bridging jumper fixed by means of a flexible suspension whereon magnetic material is applied in the form of a thin magnetically soft film at a semiconductor substrate with formed source and drain of a MIS transistor and the current-carrying elements are connected to the source and drain of the MIS transistor. |
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Switch design includes at least two structural members and namely a structural member (20) of the switch and a bearing unit (21). The structural member (20) of the switch with a pivot bearing (36) can rotate in the bearing unit (21). The switch design includes a switch (14) with a contact spring (19). In an inactivated closed position (47) of the switch (14) the contact spring (19) adjoins to a contact (18) of the switch (14). Simple design and self-cleaning effect of the switch are reached when the pivot bearing (36) has a twisted section (35) which allows pressing the switch (14) placing it to the activated closed position (37) through the inactivated closed position (47). At that the contact spring (19) slides along the contact (18) between the inactivated closed position (47) and the activated closed position (37). |
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Lever-type switching device contains: limiting partition (49) which is formed between the first and the second arms (19, 23) and limits displacement of the first and the second arm (19, 23) preventing rotation of the first and the second levers (13, 15) relative to moveable element (31); and engaging walls (45a, 45b, 47a, 47b) which are formed on the first and the second connecting portions (45, 47) and are engaged with the first and the second arms (19, 23) when the first and the second arms (19, 23) are rotating in result of rotation of the first and the second levers (13, 15) shaft to cause the first and the second plates (41, 43) to perform contact action. |
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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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Electric fuse unit (10) is equipped with a fuse component (11) made of metal conducting material that includes a supply connector (12) fixed to the pin (2) of a battery (1) and receives, this connector is placed along the upper part (1a) of the battery (1), terminal connectors (13) with connected terminals (30) and fusible components (14) placed between the supply connector (12) and terminal connectors (13). The electric fuse unit (10) is also equipped with isolating filler (15) which is placed outside the fuse component (11). The fuse component (11) is bended upwards at the point between the supply connector (12) and terminal connectors (13), at that the terminal connectors (13) are placed near the upper part (1a) of the battery (1) and along direction of the battery (1) lateral side. |
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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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Tap charger with semiconductor switching elements Invention is related to an on-load tap charger with semiconductor switching elements for uninterrupted switching between fixed contacts of the tap charger which are connected electrically to the tapped winding of the tapped transformer. Each of the fixed contacts of the tap charger can be connected to the device for charging either directly or through interconnected semiconductor switching elements. According to the invention the tap charger has separated and fixed tapping contacts for electric insulation of the semiconductor switching elements from the transformer winding during the static mode of operation. |
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Measuring contact sequence in tap changer Tap changer for a transformer comprises a cylinder and a shaft which is rotatably arranged inside the cylinder. The cylinder is provided with fixed contacts and the shaft is provided with a contact circuit facing the cylinder and including mechanical contacts, wherein the mechanical contacts are adapted to selectively mate with the fixed contacts of the cylinder upon rotation of the shaft. The contact circuit also includes at least two measuring points for measuring the characteristics of the contact circuit. The tap changer comprises at least one measuring contact device, which is electrically connected to the respective measuring points in the contact circuit. The measuring contact device is placed inside the shaft. |
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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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Method to produce powdered composite cu-cd/nb for electrocontact application From copper and niobium powders they prepare charge, cold pressing and sintering is carried out. Cadmium is added to a stock by diffusion saturation by means of its soaking in atmosphere, containing cadmium vapours. The sintered stock is exposed to deep treatment with pressure, which is combined with hot extrusion and subsequent cold rolling or drawing. Afterwards additional pressing and annealing is carried out. |
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Blocking device for fast connection key in electrical mechanisms Blocked device for a fast connection key in electrical mechanisms consists of an additional device (2), situated at the bottom end of a fast connection key (1) and connected thereto by a region (4) which gives the connection flexibility and allows displacement of the entire device (2) closer to the key (1) by pressing on or separation therefrom and return thereof to the initial position by ceasing the application of pressure which may be applied to the device (2) or to a hook (3), by which the device (2) ends at its bottom end. During rotary displacement of the key (1) and approach to the outer surface (6a) of the housing (6), the end hook (3) of the device (2), which makes up the blocking device, comes into contact with the bottom outer surface (9a) of the bottom protrusion (9), centrally symmetrical to the housing (6), while sliding thereon until said hook is fixed at the top edge (9b) of the protrusion (9), wherein the entire key (1) is fixed in a connection position. |
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Electrical mechanism for fast connection tandem switch Electrical mechanism for fast connection tandem switch has four blade contacts (4 and 4a), which are set out together with movable contacts (8), which are driven by turning elements (1), situated over the closing cover (12) of a base (1). There are four fast connection keys (2) arranged in pairs at opposite sides of the V-shaped base (1). Lateral cylindrical pins (17) of the keys (2) are axially arranged in the cross direction in the inner region of semicylindrical supports (18) of the base (1) at sides corresponding to guide sockets (3) for each connection key (2). Thus, each key (20) can turn from a horizontal position before moving into the vertical initial position for connecting an electric wire (19). The key (2) is in a vertical position until the wire (19) reaches the bottom of the cylindrical cavity (20) of the key (2), which has the end of its bottom surface (22) in form of a plug, which delimits a top aperture (23) in which the front surface of the corresponding blade contact (4, 4a) is inserted. |
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Electrical three-way switching mechanism with fast connection device Electrical three-way switching mechanism with a fast connection device is designed for use in low-voltage systems. The electrical switching mechanism consists of four fast-connection keys (2), which are arranged in pairs on opposite sides of a V-shaped base (1). Lateral roller pins (17) thereof axially rest on semi-cylindrical supports (18) of the base (1) on the sides of a socket (3) such that the connection keys turn from a horizontal position before arranging an electrical conductor to the vertical initial connection position of the electrical conductor (19), which is pre-inserted into said key (2) which, in that vertical position, will be inserted to the bottom of the cylindrical cavity (20) of the connection key (2), situated on the outer surface (21) of said connection key (2). |
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Electrical mechanism for button/switch or two-way switch with fast connection device Electrical mechanism for a switch/button or a two-way switch with a fast connection device consists of four fast connection keys (2) which are arranged in pairs on sides of a V-shaped base (1). Lateral cylindrical pins (17) are arranged on semicylindrical supports (18) which have a base (1) on sides corresponding to sockets (3) of each key (2), which turns thereto from a horizontal position before fitting an electric wire (19) to the vertical initial position for connecting the wire (19). The key (2) is in a vertical position until the wire reaches the bottom of a cylindrical cavity (20) situated on the outer surface (21) of said key (2). |
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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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Luminous key for control system, and control system and household electrical appliance Key (20) for a control system (12) has a profiled body (26) made of light-conducting material, wherein the profiled body (26) has an activation direction (28) in which the profiled body (26) moves when the key (20) is activated; a functional side (30) having a light input area (32) and an activation area (34), wherein the activation area (34) is designed to activate a switching element (24) when the key is activated (20); a control side (36) having a light output area (38), wherein the profiled body (26) is designed to direct at least part of light entering the light input area (32) to the light output area (38); a spring-loaded protrusion (40) which is formed across the activation direction (28) integrated with the profiled body (26) such that upon interacting with part (16) of the housing, it is elastically deformed to provide a return force upon activation of the key (20) in order to move the key (20) back to the original position; a force-limiting element (42), which is formed across the activation direction (28) integrated with the profiled body (26) and designed to receive, upon interaction of the activation area (34) with the switching element (24), an excessive activation force through the spring-loaded displacement of the force-limiting element (42), and a first protrusion (52) which is integrated with the profiled body (26) and is designed to interact with part (16) of the housing to form an end stop for activating the key (20). A control system (12) and a household electrical appliance (10) are also disclosed. |
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Switching over insert of electric installation device Switching over insert (1) of electric installation device (46, 47) with the lower part (3) of the body has at least one switching over chamber. At least one rotatable switching over swinging lever (10, 11, 12) installed at the lower part (3) of the body acts on contact rocker arm (6) of the switching over chamber matched to it. In the upper part (28) of the body there is a longitudinal executive element (33, 34, 35) that can be shifted in direction (A) towards the lower part (3) of the body. In the rotatable swinging lever (10, 11, 12) there is one transversal executive element (20) that can be shifted perpendicular to direction (A) and has at least one wedge surface (21, 22) which is subject to action of at least one executive console (36,37) of the longitudinal executive element (33, 34, 35) during shift in direction (A); in result of this action at first lateral offset of the transversal executive element (20) is actuated and then it leads to rotation of the switching over swinging lever (10, 11, 12) and thereby to turn of the contact rocker arm (6). |
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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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Invention relates to an electric setting device, in particular, a rotary switch or a rotary controller, in particular, a fixed potentiometer comprising a cover (2) and an actuator installed as capable of rotation, which during rotation around a rotation axis passing through the cover (2) causes process of switching or regulation, and also the first and second fixing elements (5, 6), which elastically interact with each other in direction of the axis of rotation, from which the first fixing element (5) is arranged on the actuator, and the second fixing element - on the cover (2). The first fixing element (5) is made in the form of ring-shaped arranged fixing grooves in the actuator, and the second fixing element - in the form of at least one springy tab (6c) with a fixing beak (7c) on the cover (2). |
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Device (13) to interrupt electric current passing via a transmission line (14) or to distribute energy, comprises parallel connection of the main breaker (8) and a non-linear resistor (11). The main breaker (8) comprises at least one powerful semiconductor switch of the first current direction of current. The device (13) additionally comprises a serial connection of a high-speed switch (10), comprising at least one mechanical switch and an auxiliary breaker (9), which has lower resistance in open condition, compared to the main breaker (8) and comprises at least one powerful semiconductor switch of the first current direction. This serial connection is connected in parallel to the parallel connection. In the method to use the device (13) at first the auxiliary breaker (9) is opened, thus switching the current to the main breaker (8), afterwards they open the high-speed switch (10), and then they open the main breaker (8), thus switching current to the non-linear resistor (11). The device (13) may additionally be used in the current limitation layout. |
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Modular circuit device for switching of electric capacities and adapter made for it Modular circuit device (10) for switching of electric capacities comprises a relay panel (40) and an adapter (30), connected in a detachable manner with the relay panel (40). The adapter (30) comprises a semiconductor relay (60) and a control device (50) electrically connected to it. Besides, there is a relay (20), which is connected in a detachable manner electrically and mechanically with the adapter (30) so that in the condition after connection the semiconductor relay (60) is connected in parallel to the mechanical switch (22) of the relay (20), besides, the control device (50) may control the relay (20) and the semiconductor relay (60) at different moments of time. |
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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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Method of coat application on copper contacts of electric switching devices Proposed method comprises ion-plasma spraying of molybdenum on copper contact. Spraying is started at voltage across copper contact of 1100-1500 V and heating to volumetric temperature of 180-230°C.Then, spraying is conducted at reference voltage across copper contact of 110-130 V to make 2-4 mcm-thick coat layer. Then, voltage is increased across copper contact to 1100-1500 V to allows spraying duration of 0.3-0.5 of that for spraying said one mcm-thick coat. Thereafter, spraying is performed at voltage increased many times to said increased voltage and decreased to said reference voltage to produce required thickness. |
Another patent 2513600.