Abstract

The present disclosure discloses a method and apparatus for controlling redundancy of a valve control system of a converter valve. The method includes: for each FPGA: in a case that the FPGA receives the on-duty state representing the active state: outputting a high-level control signal to a data selector through the FPGA; in a case that the FPGA receives the on-duty state representing the standby state: outputting a low-level control signal to the data selector through the FPGA, and maintaining a control signal output state of the FPGA and the other FPGA; and in a case that running state information of the other FPGA received by the FPGA through a monitoring output channel is a crash state: outputting a low-level signal to a control port of the other FPGA through the monitoring output channel by the FPGA.

IPC Classes  ?

• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

Disclosed in the present invention is an integrated switchgear, comprising a device housing, a three-phase circuit breaker, and three-phase switch assemblies. At least two three-phase switch assemblies are comprised; the three-phase switch assemblies are electrically connected to the three-phase circuit breaker; the three-phase circuit breaker and the three-phase switch assemblies are located in an inner cavity of the device housing; the three-phase switch assemblies each comprise a three-phase movable side conductor; and the projections of the three-phase movable side conductors overlap in the arrangement direction of the three-phase movable side conductors. In the integrated switchgear provided by the present application, the three-phase circuit breaker and the three-phase switch assemblies are integrated in the device housing, and the projections of the three-phase movable side conductors overlap and the projections of three-phase stationary side conductors overlap in the arrangement direction of the three-phase movable side conductors, so that the movable side conductors and the stationary side conductors of the three-phase switch assemblies, and a movable side conductor and a stationary side conductor of the circuit breaker can be shared without considering the shape and the mounting order, thereby improving the manufacturing efficiency (the number of molds is reduced in casting, and the number of tool replacements is reduced in machining) and the assembly efficiency of parts of the integrated switchgear, and reducing the production cost.

IPC Classes  ?

• H02B 13/00 - Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
• H02B 1/20 - Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards

Abstract

The present application discloses a non-linear metal oxide rod-shaped resistor and a preparation method therefor. The shape of the non-linear metal oxide rod-shaped resistor is a cylinder, an elliptical column or a polygonal prism, and has a large aspect ratio. The main steps of the preparation method comprise: S100, forming a rod-shaped resistor blank by isostatic pressing and/or dry pressing along the radial direction of the blank; S200, sintering the rod-shaped resistor blank to obtain a semi-finished rod-shaped resistor; and S300, spraying aluminum electrodes on both ends of the semi-finished rod-shaped resistor to obtain a non-linear metal oxide rod-shaped resistor. The preparation method can be used for fabricating a non-linear metal oxide resistor having a large aspect ratio. In comparison with existing round or toroidal resistor sheets, the workload of molding, grinding, aluminum spraying and the like is reduced, the utilization rate of raw materials is enhanced, and raw materials are saved; meanwhile, lightning arrester structures and assembly work are simplified, production efficiency of lightning arresters is improved.

IPC Classes  ?

• H01C 7/108 - Metal oxide
• H01C 7/12 - Overvoltage protection resistorsArresters
• H01C 17/30 - Apparatus or processes specially adapted for manufacturing resistors adapted for baking

Abstract

Disclosed in the present invention is a lightning arrester, comprising a resistor and an insulating sleeve sleeved outside the resistor. The resistor is made of a zinc oxide mixture. The zinc oxide mixture has characteristics such as excellent nonlinear coefficient, wide pressure-sensitive voltage range, and high mechanical strength. Compared with resistors composed of a plurality of laminated resistor pieces in series in the prior art, the applicant inventively presents configuring the resistor made of a zinc oxide mixture to be a long rod shape, such that the connection interface is reduced, thereby significantly improving the electrical performance of the lightning arrester. In addition, the zinc oxide mixture has excellent mechanical properties, the long rod-shaped zinc oxide ceramic resistor can be directly connected to a wire or an external support, without relying on any insulating support, such that the use of the insulating support is canceled, thereby reducing the structure size of the lightning arrester, and increasing production efficiency of the lightning arrester. Also disclosed in the present invention are a processing method for the lightning arrester.

IPC Classes  ?

• H01C 7/12 - Overvoltage protection resistorsArresters
• H02H 1/04 - Arrangements for preventing response to transient abnormal conditions, e.g. to lightning

Abstract

Disclosed are a switching device and an arc extinguishing chamber thereof. The arc extinguishing chamber comprises a first contact, a second contact, arcing rings provided between the first contact and the second contact and forming an arc gap, and a third contact moving axially between the first contact and the second contact. The arc distinguishing chamber further comprises: a circumferential thermal expansion chamber for collecting circumferential arc energy, the circumferential thermal expansion chamber circumferentially surrounding the arc gap between the arcing rings; and an axial thermal expansion chamber for collecting axial arc energy, wherein during an opening motion, the third contact moves from the first contact towards the second contact, the axial thermal expansion chamber is arranged on the side of the first contact away from the second contact, and the axial thermal expansion chamber is communicated with the arc gap. A portion of the generated arc energy enters the axial thermal expansion chamber by means of an axial flow, and the other portion of the arc energy enters the circumferential thermal expansion chamber from the arc gap by means of gas convection and radiation, such that all arc energy is utilized, thus avoiding waste and improving the arc energy utilization rate.

IPC Classes  ?

• H01H 33/74 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas

Abstract

Disclosed are a capacitor apparatus and a manufacturing method therefor, and a capacitance type voltage transformer provided with the capacitor apparatus. The manufacturing method for a capacitor apparatus is: an inner wall of a barrel-type housing (1), an inner wall of a cover plate (3) and an outer wall of an expander (2) constituting an enclosed space, wherein the cover plate (3) covers a top opening of the barrel-type housing (1), the expander (2) is provided with a first through hole (4) and is provided in the barrel-type housing (1) to be connected to the cover plate (3), moreover, the expander (2) is an enclosed element, and is in a natural non-contracted state or in a contracted state where some air or all air has been extruded; performing a vacuuming treatment on the enclosed space; enclosing the enclosed space after injecting oil in the enclosed space; and pumping air into the expander (2), so that pressure in the enclosed space reaches a preset positive pressure value, and then enclosing the expander (2) to form the enclosed element. During a manufacturing process of the capacitor apparatus, the expander (2) can be mounted firstly, and then process treatment processes, such as vacuuming, oil injection and pressuring, are completed in one step, so that there are fewer processing procedures, and the expander (2) does not tend to be damaged.

IPC Classes  ?

• H01G 13/00 - Apparatus specially adapted for manufacturing capacitorsProcesses specially adapted for manufacturing capacitors not provided for in groups
• H01G 4/224 - HousingEncapsulation

Abstract

A circuit breaker and a double-action transmission device thereof. The double-action transmission device (2) of the circuit breaker comprises a connection rod (21), a connection plate (22), and a connection plate transmission assembly. The connection plate transmission assembly comprises a first connection plate (24) and a second connection plate (25) hinge-connected to the first connection plate (24). An end of the first connection plate (24) away from the second connection plate (25) is hinge-connected to the connection rod (21) by means of a first rotary pin (23). An end of the second connection plate (25) away from the first connection plate (21) is hinge-connected to a driven-side connection member (3) by means of a second rotary pin (26). A first guide hole (221) for the movement of the first rotary pin (23) and a second guide hole (222) for the movement of the second rotary pin (26) are provided on the connection plate (22). In the double-action transmission device, the connection plate transmission assembly comprises the first connection plate (24) and the second connection plate (25), and the length of the first connection plate (24) and the length of the second connection plate (25) are adjusted according to transmission speed requirements, such that the movement speed and the transmission of the connection plate transmission assembly are not affected by the distance between the driven-side connection member (3) and a driving-side connection member (1). Therefore, the invention is applicable to performing breaking at a high voltage level, and the versatility of the double-action transmission device is improved.

IPC Classes  ?

• H01H 33/12 - Auxiliary contacts on to which the arc is transferred from the main contacts
• H01H 33/02 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means Details

Abstract

A circuit breaker, comprising a jet (9), an active side first connection member (13), an active side second connection member (14), an insulating connection member (10), an arc extinguishing chamber mounting frame (11), an insulating pull rod (7), and a protective plate (8) disposed on the arc extinguishing chamber mounting frame (11) and used for isolating an insulating section of the insulating pull rod (7) from an inner cavity of an arc extinguishing chamber (4). Both ends of the insulating connection member (10) are connected to the active side first connection member (13) and the active side second connection member (14), respectively. The insulating connection member (10) is provided with a cavity in the shape of a through hole where the jet (9) is mounted. The jet (9) and the insulating connection member (10) are limited and coaxially fixed by means of the active side first connection member (13) and the active side second connection member (14). An end portion of the protective plate (8) slidably matches a side wall of the insulating pull rod (7). The service life of the circuit breaker is prolonged.

IPC Classes  ?

• H01H 33/91 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by, or in conjunction with, the contact-operating mechanism the arc-extinguishing fluid being air or gas

Abstract

A short-circuit breaking test system for marine appliances. A maritime swinging environment is provided for a marine appliance under test (13) by simulating the movements of in degrees of freedom, i.e., rolling, pitching and yawing, of a ship body by means of a swinging test device (12); moreover, required electric energy is supplied to the marine appliance under test (13) by means of a power supply device (11) for implementing a short-circuit breaking performance test. Short-circuit breaking tests for marine appliances under a maritime swinging environment are implemented, and the accuracy of test results is improved.

IPC Classes  ?

• G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
• G01M 7/06 - Multidirectional test stands

Abstract

An industrial device intelligent control system and method. The system comprises: an RT module (101), an AI module (102) and an APP module (103), wherein the RT module (101) is connected to an industrial device by means of an interface, acquires field data of the industrial device, processes the field data, and transmits processing result data to the AI module (102) and the APP module (103); the AI module (102) carries out an intelligent analysis on the received processing result data and transmits an intelligent analysis result to the APP module (103) connected to the AI module; the APP module (103) comprises multiple APPs having multiple functions, determines and controls the analysis result, sends a feedback signal to the RT module (101) to achieve a closed-loop control strategy, and sends the feedback signal to the AI module (102) to implement parameter adjustment of an artificial intelligence model; and the APP module (103) further comprises an APP interface for data transmission. By means of the industrial device intelligent control system and method, data collection, monitoring and interaction of an industrial device, data-based model learning and optimization, and real-time update response of a control strategy can be implemented.

IPC Classes  ?

• G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]

Abstract

Provided in the present invention is an industrial Internet architecture, comprising: one or a plurality of physical entities, digital images, a search cloud, and a user application; the digital images are respectively connected to each physical entity, mapping the physical entities in the digital world, and reflecting the state, parameters, and behaviour of the physical entities; the search cloud is connected to the digital images, snapshots the digital images to form an index, manages a related app based on the digital images, and provides a search interface for the user application; and the user application implements the specific service application of the physical entities and digital images by means of the app in the search cloud. The present invention has an open architecture, and can break the information islands of private systems, promote the interconnection of physical entities in the Internet, implement real sharing of industrial data, transform industrial data into commercial value, promote the operational efficiency of existing devices in industry and industrial innovation, and activate the scaling of industrial apps. Also disclosed in the present invention is an industrial Internet architecture implementation method.

IPC Classes  ?

• H04L 29/08 - Transmission control procedure, e.g. data link level control procedure

Abstract

A method for distributing current in parallel resistor columns, comprising the following steps: 1) placing resistors into n resistor columns; 2) exerting inrush current which has an amplitude of In on each resistor column, and recording inrush current waveforms on each resistor column; 3) evenly selecting m points on the inrush current waveforms of each of the resistor columns, and acquiring a current value at each point on the inrush current waveforms of each of the resistor columns; 4) calculating a current distribution coefficient for each point on the inrush current waveforms of each of the resistor columns; and 5) calculating the divergence between the current distribution coefficients of each point on the inrush current waveforms of each of the resistor columns, then controlling the volt-ampere characteristics of each parallel resistor column according to the divergence between the current distribution coefficients of each point on the inrush current waveforms of each of the resistor columns so as to cause the volt-ampere characteristics of each of the parallel resistor columns to be consistent, such that the consistency of the volt-ampere characteristics of each of the parallel resistor columns may be guaranteed, and the divergence characteristics of the volt-ampere characteristics of each of the parallel resistor columns may be reduced.

IPC Classes  ?

• G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Abstract

Provided is a coupling structure for a tail part of a valve-side sleeve, the coupling structure comprising a conical shielding tube (1), a coupling sleeve (5) and a valve-side sleeve (7), wherein an inner side of the conical shielding tube (1) is provided with a bracket (2), a connection plate (8) is circumferentially arranged at one end, used for being connected to the conical shielding tube (1), of the coupling sleeve (5), the coupling sleeve (5) is connected to the bracket (2) on the inner side of the conical shielding tube (1) via the connection plate (8), and one end, used for being connected to the conical shielding tube (1), of the coupling sleeve (5) is connected to a valve-side lead (3) via a terminal (4), and the valve-side sleeve (7) is inserted into the other end of the coupling sleeve (5). The coupling structure for a tail part of a valve-side sleeve is simpler and is more conducive to the installation of the valve-side sleeve, effectively reducing the entire mounting operation procedure, saving on the mounting time, and having relatively good economic benefits and social benefits. The installation of the valve-side sleeve is easier and faster.

IPC Classes  ?

• H01F 27/32 - Insulating of coils, windings, or parts thereof

Abstract

Provided are a gas insulated switchgear (GIS) internal video monitoring system and a GIS internal video monitoring method. The GIS internal video monitoring system includes a GIS video sensor installed on a GIS enclosure and configured to acquire an open/close state of a GIS internal conductor in a real time manner, an intelligent power source module, a video server, and a video monitoring background system configured to control the intelligent power source module to supply power to the video sensor, where the GIS video sensor is connected with the video monitoring background system through the video server.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• H04N 5/225 - Television cameras
• H02B 1/30 - Cabinet-type casingsParts thereof or accessories therefor
• H04N 5/3745 - Addressed sensors, e.g. MOS or CMOS sensors having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components

Abstract

A self-energy arc extinguishing chamber for increasing a thermal expansion effect, comprising a movable arc contact (4), an insulating cylinder (8), a static contact base (1) arranged on an upper end of the insulating cylinder (8) and used for mounting an upper arc contact (9) and an upper arc-strike ring (7), and a movable arc contact base (6) arranged on a lower end of the insulating cylinder (8) and used for mounting a lower arc-strike ring (5) and a lower arc contact (3). A thermal expansion chamber (2) is formed inside the insulating cylinder (8). Fractures of an arc extinguishing chamber are formed at two ends of the insulating cylinder (8). The movable arc contact (4) axially runs through the insulating cylinder (8), the upper arc-strike ring (7) and the lower arc-strike ring (5), and is in contact with the upper arc contact (9) and the lower arc contact (3) at a switch-on position. With regard to the upper arc-strike ring (7) and the lower arc-strike ring (5) distributed at two ends of a fracture, an upper arc-strike surface (121) and a lower arc-strike surface (122) are respectively formed on adjacent surfaces in a fracture direction. The upper arc-strike surface (121) and/or the lower arc-strike surface (122) are radially provided with a plurality of penetrating slots. Slot openings (101) of the penetrating slots are connected to inner rings of the arc-strike rings (5, 7) where same are located. Slot tails (102) of the penetrating slots are not connected to outer ring edges of the arc-strike rings (5, 7) where same are located. Connection straight lines between the slot openings (101) and the slot tails (102) do not go through the centres of the arc-strike rings (5, 7) where same are located, and inclination directions of the connection straight lines are consistent.

IPC Classes  ?

• H01H 33/72 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
• H01H 33/70 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid

Goods & Services

Converters, electric; high and low voltage switch boards; power switches; electric reactors; on load tap changer (switches, electric); off circuit tap changer (switches, electric); control cabinet, electric, for electrical control and signal input and output; gas insulated metal enclosed switchgear used for high-voltage power system (electric); electric transformers; circuit breakers; semi-metal enclosed composite apparatus used for high-voltage power system (electrical switching equipment); air insulated open composite apparatus used for power system (electrical switching equipment); regulating apparatus, electric; current rectifiers; power plant DC systems consisting of large battery chargers and dischargers and DC operating power supplies; rectifier device for chemical electrolysis (high-power DC power supply with rectification); semi-conductor devices; current converters; industrial power supplies (DC power); high voltage direct current transmission converter valve for transferring electric energy; static dynamic reactive power compensation device used for transferring power, enhancing power of industrial power grid and improving voltage fluctuation; power compensation device used for transferring power, enhancing power of industrial power grid and suppressing harmonic wave; reactive power compensation device for improving power grid capacity of power system; compensation sets for improving power grid capacity of power system; filter sets for filtering harmonic wave of power system; filters; capacitors; lightning conductors [rods]; fuses; surveying apparatus and instruments; wires, electric; cables, electric; electric power converters; navigational instruments; coolers for transformers; radiators for transformers; sensors; power chargers for industrial purposes; electric installations for the remote control of industrial operations. Electrical insulators made of ceramic materials; insulating materials; insulating materials; insulating paint; insulating fabrics; mica, raw or partly processed; insulators; insulating tape; insulating paper; insulating coatings; condenser-type terminal (terms too vague in the opinion of the International Bureau - Rule 13(2)(b) of the Common Regulations).

Abstract

Provided are an internal video monitoring system and method for a GIS device, which is characterized by comprising a video sensor, a video server, a smart power supply module and a video monitoring background system. The video sensor is installed on a GIS housing and used for monitoring an opening and closing state of an internal conductor in the GIS in real time, converting monitored data to a digital network signal and sending same to a far-end video monitoring system for unified management.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A high-power switch with a current limiter, comprising a main conducting loop consisting of a hollow tubular main conductor, an interior and exterior connecting body, a fixed main contact and an annular movable main contact (4), and an arc extinguishing branch circuit consisting of a break device (5) having an arc extinguishing function and a current limiter (6); the arc extinguishing branch circuit is connected to the main conducting loop in parallel; the current limiter (6) serves as a switch constituent element, and is located in the main conductor; and when a switch breaks a short-circuit current, the main conducting loop breaks first, and the current is transferred to the arc extinguishing branch circuit, and the current limiter (6) limits a short-circuit current to within a breaking capacitance of the break device (5).

IPC Classes  ?

• H01H 33/16 - Impedances connected with contacts

Abstract

A seamless switching method and system for a micro-grid system. The method comprises: a first voltage collection module collecting values of various phase voltages at a grid side connected thereto; a PCS determining the power-loss ratio of the current voltage value of each phase voltage relative to a standard value, and counting the sum of the number of times of the power-loss ratios of various phase voltages being lower than a predetermined value; and if the PCS judges that the value of the sum is larger than a threshold value, executing V/F switching, and at the same time, triggering a PCC switch between the grid connected thereto and a micro-grid to be disconnected. By means of the manner of switching from on-grid to off-grid, the current impact is very small, and the smooth switching from on-grid to off-grid can be achieved.

IPC Classes  ?

• H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks

Abstract

A clutch device of a gear transmission system of a circuit-breaker spring operating mechanism includes an energy storage shaft, a large gear, and a small gear. At an energy storage holding position of the large gear, a toothless and special teeth area is arranged corresponding to the small gear. A clutch cam is provided in a cavity in the large gear at the area and a backward extended part and may be reset by a resetting spring. In the area, the large gear includes a first special tooth, a second special tooth, and a space between the first and second special teeth. When energy storage is completed, the small gear pushes the first special tooth to push the large gear and energy storage shaft to the energy storage holding position that is away from a friction dead zone, and the small gear is automatically disengaged from the large gear.

IPC Classes  ?

• H01H 3/30 - Power arrangements internal to the switch for operating the driving mechanism using spring motor
• H01H 3/58 - Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
• F16H 33/00 - Gearings based on repeated accumulation and delivery of energy
• H01H 3/40 - Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
• H01H 3/42 - Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
• F16H 3/00 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion

Goods & Services

Transformers; high voltage/low voltage switchboards; power switchgear; reactive power compensation apparatus; on load tap-changer switchgear (power switchgear); non-excitation tap-changer switchgear (power switchgear); electrical control apparatus (screens) for use in the control of electricity; gas insulated metal-enclosed switchgear (electricity) for the high voltage power systems; transformers; circuit breakers; semi-metal sealed combination electric appliances (power switchgear) for the high voltage power system; gas insulated opening combination electric appliances (power switchgear) for the power system; electric regulating devices; current rectifier systems for power stations namely large-scale accumulators for electrification as well as for discharge and supply of electricity; rectifier equipment for use in chemical electrolysis; semi-conductors; converters; power supplies (direct current supply); high-tension thyristor valves for DC transmission and used in the transmission of electrical energy; static and dynamic VAR power compensation equipment used in the transmission of currents and for enhancing the power of industrial power grids and for adjusting voltage waves; undulance power compensation equipment for the transmission of currents and for enhancing the power of industrial power grids and suppressing overtones; static VAR power compensation equipment for electric power systems and for enhancing the power of the power grids; compensation equipment for electric power systems and for enhancing the power of power grids; filtering equipment for electric power systems and for filtering overtones; filters; capacitors; arresters; fuses; measuring apparatus and instruments; electric wire; cables; electric power converters; navigation instruments; transformer coolers; transformer radiators; instrument components and special materials included in this class; transducers; power chargers for industrial electricity; electric installations for the remote control of industrial operations.

Abstract

A clutch device of a gear transmission system of a circuit breaker spring operating mechanism comprises an energy storage shaft (1), a large gear (4), and a small gear (5). At an energy storage holding position of the large gear, a tooth missing and special teeth area is arranged corresponding to the small gear. In a cavity in the large gear in the area and a backward extended part, a clutch cam (6) whose resetting is driven by a resetting spring (3) is disposed. In the area, the large gear comprises a first special tooth (4a), a second special tooth (4c), and a space (4b) between the first and second special teeth. When energy storage is completed, the small gear pushes the first special tooth to push the large gear and energy storage shaft to the energy storage holding position that is separated from a friction dead zone, and the small gear and large gear automatically disengage from each other. When the energy storage holding position is reached during energy storage, the small gear rotates due to inertia and stops at any possible position. When the large gear is quickly rotated after switch-on, the small gear and large gear can reliably and stably reengage with each other. In any situation, phenomena such as jamming of the large and small gears and a switch-on failure are not likely to occur.

IPC Classes  ?

• H01H 3/58 - Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch

Abstract

A single-phase four-post iron core structured electric transformer compensation winding system, comprises a left compensation winding (3) and a right compensation winding (4) wound on a left side column and a right side column, and a left compensation winding (10) and a right compensation winding (11) wound on an iron yoke, wherein the outlet end of the left compensation winding (3) wound on the left side column is connected with the outlet end of the left compensation winding (10) wound on the iron yoke, and the outlet end of the right compensation winding (4) wound on the right side column is connected with the outlet end of the right compensation winding (11) wound on the iron yoke. With the compensation winding system, according to the Faraday law of electromagnetic induction, a main magnetic flux generated by windings, an additional magnetic flux generated by window-penetrating current and an induction magnetic flux generated by compensation windings can be generated in the iron core, wherein the directions of the induction magnetic flux and the additional magnetic flux are always opposite, so the additional magnetic flux generated by the window-penetrating current is effectively inhibited.

IPC Classes  ?

• H01F 27/38 - Auxiliary core membersAuxiliary coils or windings
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof togetherFastening or mounting coils or windings on core, casing, or other support

Abstract

An arc extinguish chamber with high current-carrying capability for high-voltage switch equipment. An outermost layer of the arc extinguish chamber is an insulating support part (4) with metal inserts (4A, 4B) at two ends, and comprises the metal inserts at the two ends thereof; a movable contact system and a static contact system of the arc extinguish chamber are arranged inside the insulating support part, and are coaxial with the insulating support part; and the metal insert (4B) at the static end of the insulating support part is connected with the static contact system of the arc extinguish chamber, and the metal insert (4A) at the movable end is connected with the movable contact system of the arc extinguish chamber. The arc extinguish chamber adopts the metal inserts guiding a current of a main loop to the insulating support part and the method for improving conductive part materials and structures in the main loop, so that the cross section of diversion is increased, the loop resistance is reduced, the radiating condition is improved, and the overall through-flow capability of the arc extinguish chamber is reinforced.

IPC Classes  ?

• H01H 33/91 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by, or in conjunction with, the contact-operating mechanism the arc-extinguishing fluid being air or gas

Abstract

An electric operation mechanism used in gas insulated metal-enclosed switchgear (GIS) adopts a gear/cam combined transmission device with a maximum output turn angle of three turns. In the gear/cam combined transmission device, a main shaft (18) is coaxially fixed with a driving fan-shaped gear (11) and a transmission gear (14). A transmission fan-shaped gear (10) is fixed with a driven cam (9) and sleeved on the main shaft (18) with a clearance for synchronously rotating around the main shaft (18). An output shaft (20) is coaxially fixed with a driven gear (22) which is meshed with the transmission fan-shaped gear (10). A driving cam (8) is fixed with a transmission gear (7) and sleeved on the output shaft (20) with a clearance for synchronously rotating around the output shaft (20). The electric operation mechanism also adopts a pair of cams (15, 16) to drive an auxiliary switch (17) to be switched. The auxiliary switch (17) abuts on a driving shaft such that the size of the mechanism is reduced. The electric operation mechanism has good transmission characteristics, small impact forces during starting and being put in place in switching on or switching off, high accuracy of the output turn angle, accurate and reliable location and preservation of being put in place in switching on or switching off.

IPC Classes  ?

• H01H 3/26 - Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
• H01H 9/20 - Interlocking, locking, or latching mechanisms

Goods & Services

Transformer; high voltage/low voltage switchboard; power switchgear; reactor; on load tap-changer switchgear (power switchgear); non-excitation tap-changer switchgear (power switchgear); control cubicle (screen) for the electrical control and the signal input or output (electricity); gas insulated metal-enclosed switchgear (electricity) for the high voltage power system; transformers; circuit breaker; semimetal sealed combination electric appliance (power switchgear) for the high voltage power system; gas insulated opening combination electric appliance (power switchgear) for the power system; electric regulating device; rectifier direct current system for the power station (large-scale accumulator for the discharge and the electrification and operable direct supply); rectifier equipment for the chemical electrolysis (rectification function and direct supply of high efficiency); semi-conductors; converter; power supplier (direct current supply); high-tension thyristor valves for DC transmission and used in the transmission electrical energy; static and dynamic var compensation equipment used in the transmission of the current and the enhancing the power of industrial electrical net and the refit of voltage wave; undulance compensation equipment for the transmission of the current and the enhancing of the power of the industry electrical net and the suppression for the overtone; static var compensation equipment for the electrical power system and the enhancing of the power of the electrical net; whole set compensation equipment for the electrical power system and the enhancing of the power of the electrical net; whole set filtering equipment for the electrical power system and the filtering of the overtone; filter; capacitor; arrester; fuse; measuring apparatus and instrument; electric wire; cables; electric power converter; navigation instrument; transformer cooler; transformer radiator; instrument components and special materials; transducer; power charger for industrial electricity; electric installations for the remote control of industrial operations.

Goods & Services

(1) Power transformers; high voltage transformers; electric switch plates; power switches; touch sensitive switches; optical switches; light switches; differential switches; cut-out switches; electric control panels; lighting control panels; fire alarm control panels; circuit boards; electronic circuit boards; electronic circuits; circuit breakers; current converters; electrical converters; uninterruptible power supplies; electric power generators; semiconductor chips; semiconductor diodes; semiconductor integrated circuits; semiconductor transistors; semiconductor wafers; capacitors; lightning rods; electrical fuses; surveying chains; electric wires; electric cables; radiators for motors and engines; gas meters; water meters; sound level meters; automotive battery chargers; camera battery chargers; electrical control systems for heating and air conditioning systems; electrical control systems for lighting systems; electronic control systems for room locking systems.

Goods & Services

Transformer; high voltage/low voltage switchboard; power switchgear; electrical reactor; on load tap-changer switchgear in the nature of power switchgear; non-excitation tap-changer switchgear in the nature of power switchgear; control cubicle screen for the electrical control and the signal input or output of electricity; gas insulated metal-enclosed switchgear for the high voltage power system; circuit breaker; semimetal sealed combination electric appliance, namely, power switchgear for the high voltage power system; gas insulated opening combination electric appliance, namely, power switchgear for the power system; electricity regulating device; rectifier direct current system for the power station, namely, large-scale accumulator for electrical discharge and the electrification and operable direct current supply; rectifier equipment for the chemical electrolysis in the nature of rectification function and direct supply of high efficiency; semi-conductors; converter; power supplier for direct current supply; high-tension thyristor valves for DC transmission and used in the transmission of electrical energy; static and dynamic var compensation equipment used in the transmission of electrical current and the enhancing the power of industrial electrical net and the refit of voltage wave; undulance compensation equipment for the transmission of electrical current and the enhancing of the power of the industry electrical net and the suppression for the overtone; static var compensation equipment for the electrical power system and enhancing of the power of the electrical net; whole set compensation equipment, namely, current converters, for the electrical power system and the enhancing of the power of the electrical net; whole set filtering equipment, namely, low pass inductor filters used in high power electrical applications, for the electrical power system and the filtering of the overtone; filter, namely, low pass inductor filters; capacitor; arrester, namely, lightning arrester, electrical surge arrester; electrical fuse; measuring apparatus and instrument, namely, surveying chains; electric wire; electric cables; electric power converter; navigation instrument, namely, electric navigation instrument; transformer cooler, namely, step-down transformer; transformer radiator, namely, step-up transformer; instrument components and special materials, namely, gas meters/ water meters/ sound level meters; electrical transducer; power charger for industrial electricity, namely, battery charger; electric installations for the remote control of industrial operations

Goods & Services

Transformer; high voltage /low voltage switchboard; power switchgear; reactor; on load tap-changer switchgear (power switchgear); non-excitation tap-changer switchgear (power switchgear); control cubicle (screen) for the electrical control and the signal input or output (electricity); gas insulated metal-enclosed switchgear (electricity) for the high voltage power system; transformers; circuit breaker; semimetal sealed combination electric appliance (power switchgear) for the high voltage power system; gas insulated opening combination electric appliance (power switchgear) for the power system; electric regulating device; rectifier direct current system for the power station (large-scale accumulator for the discharge and the electrification and operable direct supply); rectifier equipment for the chemical electrolysis (rectification function and direct supply of high efficiency); semi-conductors; converter; power supplier (direct current supply); high-tension thyristor valves for dc transmission and used in the transmission electrical energy; static and dynamic var compensation equipment used in the transmission of the current and the enhancing the power of industrial electrical net and the refit of voltage wave; undulance compensation equipment for the transmission of the current and the enhancing of the power of the industry electrical net and the suppression for the overtone; static var compensation equipment for the electrical power system and the enhancing of the power of the electrical net; whole set compensation equipment for the electrical power system and the enhancing of the power of the electrical net; whole set filtering equipment for the electrical power system and the filtering of the overtone; filter; capacitor; arrester; fuse; measuring apparatus and instrument; electric wire; cables; electric power converter; navigation instrument; transformer cooler; transformer radiator; instrument components and special materials; transducer; power charger for industrial electricity; electric installations for the remote control of industrial operations.