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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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Discharger for overvoltage protection and electric device with gas isolation Discharger for overvoltage protection includes switching unit connected to electric equipment with gas isolation where isolating gas is sealed, and switching limit voltage of discharger for overvoltage protection to lower limit voltage than defined critical voltage for low temperatures, indicating permissible voltage causing breakdown when isolating gas becomes liquefied. |
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Gas-insulated switchgear and control gear Invention relates to electrical engineering and may be used in gas-insulated high-voltage switchgear and control gear. Switchgear and control gear kit includes devices and double system of three-pole tapped connecting buses. The taps are located in two adjoining cells of at least one three-pole connecting bus and are not parallel to each other. Bus of one phase of three-pole connecting buses features bends and veers around taps of adjoining phases. |
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Sealed module with disconnectors for distribution device with gas insulation Invention relates to distribution devices. Distribution device module has housing (4) forming common gas chamber for storage of insulating gas for distribution device module, collecting buses conductors, three sections (110, 120 and 130) of collecting buses conductors located in common gas chamber; unit for connecting outgoing conductors with three holes for outgoing conductors, sections of conductors pass from inside of housing to one of holes for outgoing conductors; and three disconnectors (151, 161, 171) which connect one of sections (110, 120, 130) of collecting buses conductors with one of sections of outgoing conductors via separation point (152, 162, 172). Outgoing normal plane is parallel to median perpendiculars of holes for outgoing conductors. Separation points (152, 162, 172) are located in space so that separation point (152, 162) of one of the first disconnectors (151, 161) is located on the first side of outgoing normal plane, and separation point (172) of one of the second disconnectors (171) is located on the second outgoing normal plane opposite to the first side. |
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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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Gas-insulated switchgear and control gear Invention relates to electric engineering and may be used in gas-insulated high-voltage switchgear and control gear. Gas-insulated switchgear and control gear contains cubicles, a circuit breaker, switches connected to the first terminal leads of the circuit breaker, disconnectors and collecting buses connected to the circuit breaker through disconnectors and the second terminal leads of the circuit breaker. The above connection of the collecting buses with the circuit breaker is located in the axis of the vertical circuit breaker and at least two switches are stacked along the circuit-breaker case in direction to its second terminal leads. |
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Switching mechanism for distribution device with sf6 gas insulation Invention relates to electrical engineering and may be used in distribution devices with SF6 gas insulation. The switching mechanism for distribution device with SF6 gas insulation contains a fixed contact having an area of arcing contact and an area of the fixed main contact. A movable arcing contact and main contact can be moved in a straight-line motion. A cylindrical rod transfers driving force to the movable main contact and the movable arcing contact in order to start their straight-line motion. A joint bar is connected to the cylindrical rod. The fixed cylinder has a section of a hollow tube directing straight-line motion of the cylindrical rod and the joint bar. A spring accumulates elastic energy when the movable main contact and the movable arcing contact are moved to the contact position and it releases energy when the movable main contact and the movable arcing contact are moved to the separating position. |
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Package transformer substation Invention relates to electrical engineering, power engineering and power transmission lines, and can be used in transformer substations. The package transformer substation is connected to an overhead power line through a fuse-disconnecting switch mounted directly on the housing of the substation by a suspension structure with the possibility of controlling the fuse-disconnecting switch from the earth using a bar. The lower end of the bar is locked onto the housing of the substation. Protection of the busbar bridge and automatic devices is in form of an opening panel using support communication. |
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Distribution cabinet having busbar configured for plug-in connection Distribution cabinet for holding electrical and electronic components has at least one current-conducting busbar (8) having a contact element (10, 10') for connection with another busbar (9) of another distribution cabinet. That contact element (10, 10') branches from the longitudinal end (11) of the busbar (8) and includes gripping means (12, 12') for two-way gripping of the other longitudinal end (13) of the other busbar (9). |
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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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Sealed body has the first tubular section (2) and also the second tubular section (3). Tubular sections (2, 3) are arranged as capable of displacement relative to each other and limit at least a partially changed sealed volume (12). The channel (11) connects the sealed volume (12) with a compensation volume (13), having a piston and a cylinder, each connected to one of tubular sections. Change of the sealed volume (12) causes inversely proportionate change of the compensation volume (13). Thus pressure during relative movements of tubular sections is compensated for. |
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Quick-insert modular electric equipment Quick-insert modular electric equipment comprises a device (10) with a box body (11) holding electrical devices, the specified equipment is made as capable of detachable installation on a support guide and is adapted to connect to one of multiple parallel electric distributing buses. To provide for modularity of design and safety, there is an additional accessory (20), which is connected to the box body (11) in a detachable manner and carries the first connection element (23A), connected with electric devices, and the second connection element (23B), electrically connected with the first connection element (23A) and adapted for connection to the specified electric distributing bus. |
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Condensation thermoelectric cabinet In a device consisting of a tightly packed sealed housing, two and more injectors serving for injection of a mixture to an internal cavity of the cabinet; a highly heat-conducting plate with an installed heat-emitting equipment; a thermoelectric unit; a pin fin heat sink; a fan unit; a control unit (CU); a condensate flowdown chute; a pump serving for supply of condensate to injectors; a temperature sensor; a protective casing, it is proposed to use an evaporation and condensation cooling principle. The temperature sensor supplies a signal to CU that includes a pump for liquid supply to injectors located on the cabinet ceiling. The mixture is injected to the internal cavity of the cabinet and deposited on heat-emitting elements; its evaporation process takes place, therefore, cooling of heat-emitting elements is achieved. When vapours of the mixture go upwards, they are condensed on the ceiling (upper part of the cabinet) that is technically inclined to the rear part of the cabinet for directed condensate flowdown onto a special chute located throughout the length of the rear wall. Then it enters CU, in which the pump is installed. The mixture is supplied again to the injections through liquid channels under action of the pump. In order to amplify condensation properties of the evaporated liquid, the thermoelectric units are used, the cold junctions of which are in close contact with the upper cover of the cabinet, and the installed pin fin heat sink that is in the same close contact with the junctions of the thermoelectric units, but is on the hot side, performs heat removal. The fan unit consisting of four fans is controlled by the control unit (CU) that provides the possibility of their paired actuation for the purpose of electric energy saving. |
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Overhead tank with expansion bellows Invention refers to electric engineering, to overhead tanks with deformable expansion bellows. Overhead tank (1) has the first connection point (2) and the second connection point (3). Both connection points (2, 3) are flexible towards each other. Expansion bellows (17, 17a) packs telescopic carrier (12, 15). |
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Invention relates to a sealed dispensing apparatus, having a housing (4) which forms an insulating space (6) and an electrical active part (8, 9, 11a, 11b, 11c) situated in the insulating space (6), said insulating space (6) having an insulation medium. The dispensing apparatus is characterised by that the insulation medium contains a dielectric compound with boiling point higher than -25°C, which is a fluoroketone having 4-12 carbon atoms. |
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Modular electrical apparatus (10) has a connecting device (50, 60) for connection with an additional modular electrical apparatus (70). The apparatus (10) has a closed housing (20), and the connecting device (50, 60) comprises: a driven element (80) which can slide along a direction (M1, M2) between a working blocking position and a working opening position for electrical apparatus (10, 70); and a connecting element (90) which can slide along a direction (A1, A2) of the connection between a working connection position and a working disconnection position for electrical apparatus (10, 70). The direction (A1, A2) of connection is transverse relative the direction (M1, M2) of movement. The connection device (50, 60) also includes guide means (92, 94), having at least a first (92) guide plane for interaction with the connecting element (90) so as to cause the element (90) to slide along the direction (A1, A2) of connection. The first guide plane (92) is inclined relative the direction (M1, M2) of movement and the direction (A1, A2) of connection. |
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Equipment mounting frame comprises two side support structures of a selected height, wherein each side support structure (a) comprises one or more upright working members defining the width of that side support structure and (b) comprises a foot structure extending from at least one end of the upright working member(s). The foot structure defines the depth of that side support structure and extends across at least one quarter, preferably at least half, more preferably at least three quarters, especially preferably substantially all of the said width, and (c) carries an upright group or row of fixing members, wherein the two side support structures are connectable together at a distance from each other to enable equipment trays or blocks to be mounted in assembled array between the side structures through said fixing members. Each of said side support structures each with the said foot structure(s) extending therefrom is formed to be nested together when disconnected from each other for shipment or storage within a volume less than twice the volume defined by said width, depth and height. |
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Device for installation of circuit breaker or similar apparatus on mounting plate Circuit breaker includes a housing, the upper side of which is installed on a reverse side of a mounting plate; a fastening projection with fasteners and several elastic tongues, on each of which a locking projection is made. The fastening projection and elastic tongues are inserted into a mounting plate hole from behind to perform an installation process. Locking projections are fixed in their places and interact with front edge of the hole. The device includes a fastening element that can be installed on front side of the mounting plate and interacts with fasteners of the fastening projection. Elastic tongues project behind the upper side of the housing in vertical direction and are located at some distance from the fastening projection. The fastening element is formed with a sleeve that can be inserted into the mounting plate hole on its front side. |
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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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Method for implementation of distribution point of energy carriers of elevator type Invention refers to electric engineering, to an electric distribution equipment, and can be used for electric power supply to low-duty distributed and remote consumers of inhabited areas and small industries in town and rural areas, for seasonal installation in agricultural industry, for farms, individual electric power supply to cottages, in places and areas with deep snow cover in complicated and difficult-to-access places. Under urban conditions it is possible to use the invention for supply of liquids or energy: gas, water, electricity, thus performing control of such supply and/or making measurement of supplied quantities, namely for recharging of batteries of an electric traction vehicle, in places for performance of holidays or in market places, in camping places, in harbours for boats and yachts, in exhibition halls, at stadiums and other sports facilities, using a distribution network for liquid under pressure, for example pneumatic or hydraulic ones, where gas or electric meters, and time meters of a parking lot have been used. A shell is installed in a well. A load-carrying duct is equipped with a base, on which rollers are installed. Guides for movement of rollers on them are arranged on inner surface of the shell. A mechanism for vertical movement of the load-carrying duct is made in the form of a screw pair, and the shell bottom is provided with drain openings and arranged on a drain layer. |
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Effective heavy-current bowl-shaped tubular conductors Heavy-current bus includes a pair of bowl-shaped conductors located opposite to each other, the cross-section of each of which resembles a half of a hexagon or an open isosceles trapezoid, which are separated with an air gap, both at horizontal and at vertical layout. The air gap improves cooling efficiency owing to natural convection by enlarging the surface area of conductors, which is blown with air flow inside the casing of electric distribution equipment. As a result, total temperature of the bus system decreases. Shaped conductors have smoother junctions for passage of electric current between bends of conductors. Such smooth junctions improve current distribution throughout the conductor, thus weakening surface effect. Due to better heat dissipation and weakening of surface effect, amount of copper required to provide the same current force is considerably reduced. In order to attenuate proximity effect between adjacent buses, magnetic screens can be installed. |
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Connection comb (100) includes insulating housing (110) of elongated shape, which includes lower wall (120), out of which an external part of each pin, at least. of one bus of electric connection projects; upper wall (111) opposite to the above lower wall; and front (112) and rear (115) walls attaching upper and lower walls. With that, rear wall is located maximum close to external parts of the above pins. According to the invention, on the side of front wall of the insulating housing, upper wall includes part (111A) projecting relative to the lower wall. |
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Complete high-voltage switchgear In compete high-voltage switchgear consisting of separate metal cabinet separated into technological compartments, having the possibility of single-sided and two-sided service and containing switching device, microprocessor protection and protection of main circuits, high-voltage contactor is used as switching device. Microprocessor protection has the possibility of providing simultaneous operation with sensors of temperature, level, dry stroke, sensors of flooding, speed and pressure and possibility of integration to automatic system for commercial measurement of power consumption and automatic process control system. Input and outgoing lines are made in the form of collecting buses or cable connection. Protection of main circuits is made in the form of arc protection device and unloading valves. |
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Retaining device for traverse in electric distribution cubicle, and electric distribution cubicle Retaining device for traverse (28) in electric distribution cubicle is installed on load-carrying channel (10, 30) perpendicular to its longitudinal direction with possibility of being relocated, with holder (13) fixed on load-carrying channel (10, 30) and clamp (25) installed in holder (13) so that it can be moved, and having at least two flanges (24, 26) located perpendicular to each other. First flange (24) of clamp is attached to holder (13) with possibility of stepless control. Traverse (28) is attached to the second flange (26). |
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Pull-out element of switchgear and control gear box Mechanism for moving a power switch bogie consists of a transverse horizontal shaft mounted in sockets of a box on the level of the centre of the entire group of plug-in contacts of the switch, a turning shaft and two pairs of pivotally connected levers, lying on both sides of the switch and connected by one end to the shaft and by the other to the bogie. |
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Earthing device for levelling electric potential at entrances on territory of electric plants Structure of the earthing device employs rod-shaped inclined earthing leads buried in the ground from a trench with a horizontal earthing lead in the directions of the entrance and exit of the territory of the electric plant. The earthing device can be used on territories where there is high-voltage electrical equipment, lightning protectors and at entrances of buildings with high-voltage electrical equipment. |
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Prefabricated electric cabinet Assembly is facilitated due to clamping installation and tightening screws of different elements (10, 12, 14, 40) which ensures additional rigidity of the framework structure without increase of the rear panel thickness (10). Different elements of the cabinet body are optimised for rationalisation of storage, assembly and installation methods and operations applicable to cabinets by way of electric installations modernisation. In particular, the cabinet suspension is facilitated thanks to the shape of its framework structure crosswise elements (14). Thus, the elements of the cabinet assembly set enable change of the shape of the cabinet and other cabinets to be connected to it and/or the tightness degree selectable without modification of assembly or the elements proper. |
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Switch block contains interruption unit and disconnecting unit. The disconnecting unit contains the first and second interruption contacts and the first drive unit. The disconnecting unit contains the first and second fixed disconnecting contacts capable to connect and disconnect respective sliding disconnecting contacts installed at the interruption unit and connected electrically to the first interruption contact. The interruption unit is supported mechanically by the first fixed conductor and the second interruption contact is connected electrically to the first fixed conductor. The interruption unit contains the second drive unit that slides the interruption unit in regard to the first conductor between position of the interrupter when the first sliding contact of interruption is connected to the first fixed interruption contact while the second sliding contact of interruption is isolated from the second fixed interruption contact; position of the interrupter when the first and second sliding contacts of interruption are isolated from the first and second fixed interruption contacts; and position of the interrupter when the second sliding contact of interruption is connected to the second fixed interruption contact while the first sliding contact of interruption is isolated from the first fixed interruption contact. |
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Monitoring and control panel comprises a housing 1, a block of electrical elements 2, a block of connectors 3. The housing 1 at the upper part is equipped with a detachable panel 4 for placement of control elements 5, light signalling hardware 6 and safety devices 7. At the lower part the housing 1 is equipped with a welded bracket 8 for placement of the control panel on the panel 9 of the cabin of the specialised vehicle. The bracket 8 is made in the form of a plate bent with the ability to form two shelves 10 and 11. On the shelf 10 the location holes 12 are made, and in the middle of the shelf 11 the tube 13 is placed on which ends perpendicular to its axis two plates 14 are placed with location holes 15. On the back surface of the shelf 11 a corner 16 with an opening 17 is located. The light signalling hardware 6 is placed in the holders 18 made of a dielectric press material with lobes 19 reinforced into the reinforced press material. |
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Grounding conductor for sf6 insulated switchgear Grounding conductor for an SF6 insulated switchgear comprises an arc quenching device comprising a fixed contact, a movable cylindrical contact arranged coaxially with the fixed contact. Around the fixed contact with a central hole there is a screen arranged. The fixed contact comprises two parts - a cylindrical and an expanding conical parts. At the end of the conical part there is an insulating cylindrical insert. |
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Frontal unit (3) for an instrument holder (1) comprises a manual valve (5) arranged on the front panel of front unit control, pre-stressed and movable, mainly in parallel to the front panel of control for opening of a hole (9) providing access in order to set two or more positions of the instrument holder (1) connection. According to the invention, the front unit (3) comprises a handle (4) for actuation of the main switch (20) of the instrument holder (1). In the front unit (3) there is a locking device (8) for mutual blocking of the manual valve (5) and the main switch (20). |
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Distribution cabinet for electric wiring distribution Distribution cabinet comprises frame racks (11, 12, 13, 14; 25, 25H), on which lower, upper and rear walls are installed, as well as side walls and a front wall (31, 32; 15, 16; 33, 34; 35), if necessary, with a front door. There are only vertically arranged frame racks (11, 12, 13, 14; 25, 25H), which are retained in their position relative to each other with the help of the lower and upper wall (15, 16). Frame racks have longitudinal grooves (46, 47; 48, 49; 50, 51; 56) to hold in particular vertical edges of side walls (31, 32; 35) and the rear wall (33, 34). |
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DC measurement on a substation is carried out on the basis of the Faraday effect in one or more turns of a measurement optic fibre (7), placed into a base (5a) of a tube bushing (5), stretching via a wall (3a) of a room (3). Such arrangement is used due to the fact that the base (5a) of the tube bushing (5) is at zero potential, which facilitates works of installation and servicing. |
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Connecting electrode in form of rod with flat contact surface Connecting surfaces (12) of a connecting electrode (10) have flat shape. Connecting devices (12, 12') comprise a conducting insert (24) in a crushable insulating elastomer (14), cast and coated with a screen (20). Connecting surfaces (26, 28) of conducting inserts (24) are arranged with displacement relative to connecting surfaces (16, 18) of an insulating support (14). After the connection has been made, insulating surfaces (16, 16') contact with each other, and compression is carried out, making it possible to implement an air impermeable connection, at the same time conducting surfaces (26, 26') enter in contact with each other. The unit is in compressed condition with the help of a central screw (50), which is preferably connected with a locking device (52), for the connecting surface (18), not used for electric connection. |
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Fastening part mechanically joins a rear wall with side walls (11, 12), a lower wall (13) and an upper wall (14) of the cabinet, an electric distribution cabinet. On the inner side of the rear wall (15) in its four angles perpendicularly to it at least one fastening part (25, 25a) is installed, having an extended shape. On the fastening part there are spring-loaded tabs (42, 43, 44; 45, 46, 47) moulded with fixing ledges (42a, 43a, 44a; 45a, 46a, 47a), where side walls (11, 12) may be rigidly fixed, the lower wall (13) and the upper wall (14). |
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Protective profile for establishment of stiff connection to valve unit is equipped with mechanical fasteners. Besides, on its front side, the protective profile includes electric actuators, and control electronics, by means of which sections of face support are controlled on the right or on the left sides using electric actuators, is integrated. Protective profile includes at least one electric connector for connection to left section and adjacent right section of face support. At that, protective profile includes on its rear side built-in electric connectors provided with possibility of being connected to electric connectors of electromagnetic valves. |
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Sliding instrument unit and distributing cabinet with large number of sliding instrument units Invention relates to electrical engineering and may be used in low-voltage distribution devices and distributing cabinets. The technical result consists in reduction of control elements and costs for assembly, and also in higher safety. The sliding instrument unit (1) for an electrical distributing panel comprises a body (2) with a base (3), a front side (FS), and also a rear side (5). It comprises a system (7) moved by means of the first moving mechanism relative to the base (3) in direction (ER) of insertion for movement of disconnecting contacts (8) for power supply. The sliding instrument unit (1) comprises a control jack plug (14), moved by means of the second moving mechanism into a test or disconnected position. According to the invention, in the body (2) of the sliding instrument unit there is an actuating element (30) arranged from two parts driven through a hole (11) providing access by means of the actuating instrument (12, 13). The first part (31) is connected with the first moving mechanism, and the second part (32) - with the second moving mechanism. Both parts (31, 32) are driven by the first actuating instrument (12) jointly. The second part (32) is driven only by the second actuating instrument (13). |
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Actuator of electrical distributing device and electrical distributing device that contains it Actuator of an electrical distributing device comprises a handle (6) of manual control of a movable contact (contacts) (4) and a high-speed closing shaft (7), which comprises the first lever (13), operating in connection with an element forming a cam (14) of the handle (6), and at least one second lever (15), operating accordingly in connection with at least one limiter (16). Each limiter (16) is strongly fixed to a movable contact so that the movable contact (contacts) are retained by the second lever (levers) (15) in the start of the manual closure of the handle (6) and that the cam (14) acts at the first lever (13) after above displacement of the handle (6), in order to remove the above blocking of the second lever (levers) (15) on the movable contact (contacts) (4). Such blocking causes high-speed closure of contacts (4, 5). |
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Screening device for current-distribution unit Screening device (22; 45) for current-distributing unit (17) contains screening means to close facing detail (18, 19) with venting holes (20), door of distribution cabinet in particular. Screening devices are designed so that under normal operating conditions they provide air flow through venting holes (20) inside current-distribution unit or from it, and in case of trouble they close venting holes (20) under blast effect so that air blast and hot gases escape much weakened. In order to improve screening device resistance to mechanical damage at least one screening sheet (25; 49) is provided as screening means installed with possibility of turn between side screens (23, 24, 47, 48), this sheet is confined in inclined position due to its proper weight and under blast effect it moves to vertical position. |
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Device to connect two cabinets with electric equipment Device comprises the first stop ledge (4) with a protruding finger (8, 9), equipped with a hole, and the second stop ledge (5) with a protruding finger (23), also equipped with a hole. It also comprises a bolt (6) designed for fixation of the first ledge (4) on the second stop ledge (5). Stop ledges (4, 5) interact with each other and may occupy a position in process of the specified interaction, in which they are pushed from each other and in which holes are partially imposed onto each other, and also a position, in which stop ledges are pushed to each other, and in which circuits of holes are imposed one onto another. Stop ledges (4, 5) transfer from one specified position into another, pushing the stop bolt (6) inside two specified holes. |
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Grounding plate and cabinet, which uses it Invention relates to electric engineering, to cabinets of a frequency converter or a switching device. A grounding plate comprises the main element, a connecting element, an extension element, the first contact element and the second contact element. The connecting element, the extension element and the second contact element form a half-closed space. The connecting element, the extension element and the first contact element have approximately a Z shape. The first contact element comprises at least one round hole. The end of the specified second contact element comprises at least one arched groove arranged along direction of its extension. |
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Cabinet for radioelectronic equipment Cabinet (1) for radioelectronic equipment in which there are submodules (8) with their own self-contained air-cooling systems is sealed and has two separate ventilation units (9 and 10). Inner partition walls form longitudinal ventilation channels from said self-contained air-cooling systems of submodules (8): on the back cover of the cabinet (2), upper (7) and lower (6) covers and the front door (2), and from the two separate ventilation units (9 and 10), respectively mounted higher and lower than the submodules (8), the inner partition walls form transverse ventilation channels vertically between housings of the submodules (8) and on the side covers (4, 5) of the cabinet. The front door (2) and covers (3,4, 5, 6 and 7) of the cabinet for radioelectronic equipment are corrugated: the front door (2), the back (3) and side covers (4 and 5) have vertical corrugations, and in the lower (6) and upper (7) covers, the corrugations lie in the direction from the front door (2) to the back cover (3), wherein all corrugations to the edges of sheets of the front door (2) and covers (3, 4, 5, 6 and 7) of the cabinet for radioelectronic equipment move into the plane of the sheets. |
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Locking device of plug for vacuum automatic circuit breaker Locking device comprises a control panel with a plug to control capacity and a body of an automatic circuit breaker comprising a connector for capacity control for connection with the possibility of plus disconnection for capacity control, leads for voltage and current acceptance, a frame installed on the control panel and comprising leads connected or disconnected with leads of the automatic circuit breaker body, a carriage comprising the automatic circuit breaker body and installed as capable of sliding along the frame, a limiting unit of the carriage, which comprises a link made as capable of displacement up and down along the insertion direction or plug disconnection to control capacity, and a locking plate connected with the link for interaction with it and configured to restrict displacement of the carriage or to remove the restricted position of the carriage as it displaces in the direction perpendicular to the direction of carriage displacement. |
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Blocking device (8) for an instrument carrier (1), in particular, for a pull-put instrument unit (1) is designed for installation in a pull-out compartment of a cabinet of a cubicle switchboard (100). It comprises the main breaker (15) controlled by means of a handle (3) on a face panel (16) of the instrument carrier (1). In the area of the face panel (16) there is a hole of access (9) to a plug connector of an actuating tool for setting of two or more switching positions of the instrument carrier (1). A locking plate (61) is designed to convert rotary motion of the handle (3) and a contact axis (12) of the main breaker (15) connected with it in rectilinear motion. A manual handle (5) arranged on the face panel (16) as spring-loaded and moved in parallel to the face panel (16) in the off position locks an access hole (9). In accordance with the invention a locking plate (61) comprises a slider (6) of the main breaker, which is installed coaxially with the manual handle (5), so that the manual handle (5) with the main breaker (15) switched on may not move to the open position, and the main breaker (15) may not be switched on in the open position of the manual handle (5). |
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Inner space of distribution cabinet (2, 3, 4) is divided into several subspaces (5) located above each other, closed with the corresponding doors (16) with sealing by means of circumferential sealing device (90, 85) acting on their inner side. Doors (16) are installed on one of their vertical sides by means of hinges with possibility of being turned on frame (10) of the corresponding cabinet (2, 3, 4), and on their opposite vertical side they have the possibility of being locked with locking mechanism. The first hinged section (16.1) is fixed by means of attachment section (83) in vertical section of frame (10), and door (16) is hinged with possibility of being turned in articulation section made in the first hinged section (16.1) by means of the second hinged section installed on it. Multi-version breakdown of inner space of distribution cabinets and the corresponding door installation is encouraged with the fact that attachment sections (83), when in closed position, are located inside circumferential sealing device (90, 85), and articulation section (82) is located beyond the limits of sealing device (90, 85). |
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Cabinet for electrical equipment containing plate-base with hatch for cables entry Cabinet contains a plate-base (4) with a hatch for cables entry and it contains a unit (5) protruding from the plate-base (4). There is a hole (46) in upper panel of the unit (5) to attach cable tray (47), and in the side panel there is a through hole against the hatch of the plate-base (4). |
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At least one system distribution cabinet (2, 3, 4) by means of wall sections is divided into several partial compartitions closed from all the sides in the form of rectangular parallelepiped. In order to divide it vertical wall sections with horizontal division are provided. Design of partial compartitions, functional compartition in particular for example for low-voltage plants, is varied due to the fact that wall sections for formation of several horizontally stacked partial compartitions in the form of partitions contain side wall sections (20) matched to the same or different heights of partial compartitions, back wall sections matched and designed as mounting panels (40) and horizontal partitioning bases (3). |
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Discharger, hv insulator with discharger and hv aerial power line using such insulator Discharger for lightning protection of equipment elements or aerial power line contains an insulation body made of a dielectric and a multi-electrode system consisting of m (m≥5) electrodes mechanically related to the insulation body and positioned between the ends thereof so that to enable generation of an eclectic discharge between adjacent electrodes under the impact of lightning overvoltage. The electrodes are positioned inside the insulator body separated from its surface with an insulation layer. Arranged between adjacent electrodes are discharge chambers reaching the insulation body surface. At least several discharge chambers consist of two interconnected parts; the first parts of the discharge chambers the electrodes project into are designed as holes within the insulation body while the second parts of the discharge chambers, connected to the first ones, are designed as slots on the insulation body surface. Additionally disclosed are an insulator containing the said discharge device and an HV aerial power line using this insulator. |
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Distribution cabinet with multiple inner housings Distribution cabinet (1) with a housing (3) contains an inner housing (21) in the form of metal frames (16) and, whenever required, a jacket with screening sheets (13). The outer housing (22), in particular, is designed as the inner housing (21) bracing jacket, preferably - made of plastic. The mounting framework (6) for equipment installation is fixed inside the inner housing (21). The housing (3) contains multiple inner housings (21) positioned close to each other with at least one connector element (12) fixed thereon that ensures usage of parts of the outer housing (22) of an individual distribution cabinet (1). |
Another patent 2513776.