371results about "Overvoltage arrestors using spark gaps" patented technology

An overvoltage protection device having a casing with an internal space, an earth branch, a positive branch, and a negative branch that join. The device also has an earth connector, n1 positive connectors, n1 being greater or equal to 3, and n2 negative connectors, n2 being greater than or equal to 3.

The invention relates to a signal wall box with strong electromagnetic pulse combined protection and high shielding effectiveness, which belongs to the field of shielding square cabins of electronic equipment and comprises a shell, an out-cabin panel, an in-cabin panel and a filter. The peripheral shell wall of the shell penetrates through a cabin plate of the square cabin, and an outer cabin panel and an inner cabin panel are installed at the outer end and the inner end of the shell respectively. A plurality of connector sockets are arranged on the out-cabin panel and the in-cabin panel in a one-to-one correspondence mode, and a signal interface is formed by a group of corresponding connector sockets. The plurality of filters are installed in the shell, each signal interface corresponds to one corresponding filter, and the filters are connected in series in a signal loop of a group of connector sockets. The filter comprises a combined filter, a radio frequency protection filter and a short wave protection filter. The signal wall box has lightning protection, high-altitude nuclear explosion electromagnetic pulse protection and high shielding effectiveness at the same time, and provides reliable protection for a signal window of an electronic equipment shielding square cabin in a strong electromagnetic pulse environment.

The invention relates to a surge protection device intended to be installed on an electrical installation, in parallel with one or more items of equipment to be protected, said electrical installation comprising at least one first phase line (L1), a neutral line (N) and an earth line (T), the protection device comprising a casing; and a current measurement toroid, which is housed in the casing and which comprises a central opening, through which a detection portion passes that is disposed in a surge current diversion path.

The invention discloses a 35kV suspension type line discharge gap lightning arrester doubling as an insulator discharge gap, and relates to the technical field of lightning arresters, the lightning arrester assembly comprises a lightning arrester assembly, an adjusting assembly and a state detection assembly, the lightning arrester assembly comprises a first support plate and a second support plate, the first support plate is rotatably connected with the second support plate, the lightning arrester assembly further comprises a lightning arrester main body, and the lightning arrester main body is rotatably connected with the adjusting assembly. An adjusting assembly is arranged at the bottom of the second supporting plate and comprises a fixed arc plate and a protective shell, and a rotating arc plate is installed at the bottom of the first supporting plate. According to the lightning arrester, the adjusting assembly is installed, the position of the arc striking block is adjusted through the first telescopic rod, the first gear drives the rack to move, a rotating arc plate drives the first supporting plate to rotate, the first supporting plate drives the lightning arrester body to rotate, the position of the lightning arrester body is adjusted, and then the discharging gap is adjusted; the purpose of conveniently adjusting the discharge gap of the discharge gap lightning arrester is achieved, the arc extinguishing effect of the gap lightning arrester is improved, and the application range of the gap lightning arrester is expanded.

The invention relates to a monitoring device (14) for detecting a leakage current in a surge protection device (12). The monitoring device (14) has a connection (15) for series connection with the surge protection device (12). The monitoring device (14) has a short-circuit current-quenching and / or overvoltage-switching component (20). The monitoring device (14) has a detection circuit (22) connected in parallel to the short-circuit current-quenching and / or overvoltage-switching component (20). The detection circuit (22) comprises at least one measuring capacitor (24) with a measuring capacitance, which is connected in series with the surge protection device (12). The detection circuit (22) comprises measuring electronics (26) configured to detect a leakage current-relevant parameter. Furthermore, an assembly (16) and a method for detecting a leakage current in an overvoltage protection device (12) are described.

The invention provides a line arrester gap distance correction method and a gap structure thereof, and relates to the technical field of power transmission and distribution primary equipment of a power system. The method for correcting the gap distance of the line lightning arrester comprises the following specific steps: S1, calculating the series gap distance of the lightning arrester according to the 50% discharge voltage of the positive polarity lightning impulse of the lightning arrester with the gap at the altitude of 1000mm and the gap power frequency withstand voltage when the lightning arrester breaks down, and taking the series gap distance as a reference value for correcting the gap distance at different altitudes; by calculating and testing the series gap distance of the line lightning arrester under atmospheric pressure at different altitudes, a correction method for the series gap distance of the line lightning arrester at different altitudes is obtained, reliable action of the series gap distance of the line lightning arrester under lightning overvoltage at different altitudes is ensured, a line insulator is protected, and the service life of the line lightning arrester is prolonged. Line insulator breakdown or flashover is prevented, and the line trip-out rate is reduced; and meanwhile, the maximum power frequency overvoltage occurring in the system can be tolerated.

The invention relates to an ignition device (100) for a spark gap arrangement (200) comprising at least one first and one second ignition capacitor (C1, C2) for voltage division between a first and a second electrode of the spark gap arrangement, a first trigger spark gap (Tgr1) arranged in a first parallel branch to the first ignition capacitor, and a second trigger spark gap (Tgr2) arranged in a second parallel branch to the second ignition capacitor. The invention is characterized in that a first ignition resistor (P1b) is provided in the first parallel branch, wherein a first potential point (101) between the first ignition resistor and the first trigger spark gap is connected to an ignition electrode (ZE2) of the second trigger spark gap.The invention further relates to a spark gap arrangement with the ignition device, an arrangement with a high-voltage device and the spark gap arrangement for protecting the high-voltage device, and a method for igniting the spark gap arrangement.

The present disclosure relates to a high voltage bypass device, comprising a cavity, a trigger element arranged in the cavity, a reservoir filled with a conductive, flowable material, and a shutter separating the cavity and the reservoir. The trigger element is connected to a first terminal and a second terminal of the high voltage bypass device. The shutter is configured to open a passage between the cavity and the reservoir in case the trigger element is triggered by an overvoltage condition, such that the conductive, flowable material at least partially fills the cavity, thereby forming a conductive path from the first terminal to the second terminal. The present disclosure further relates to a voltage source converter (VSC), in particular a modular multi-cell converter, and an operating method for a high voltage bypass device.

To provide a transient voltage protection device capable of restraining degradation of transient voltage protection characteristics.SOLUTION: A transient voltage protection device ED1 includes an external electrode 10 disposed on an end face 1a and a plurality of side faces 1c, an external electrode 20 that are spaced apart from the external electrode 10 and disposed on an end face 1b and side faces 1d, an internal electrode 30 that is disposed inside an element body 1 and connected to the external electrode 10, and an internal electrode 40 that is disposed inside the element body 1 and connected to the external electrode 20. The internal electrode 30 includes an end 33 that is exposed to the end face 1a and the side faces 1c and connected to the external electrode 10. The internal electrode 40 includes an end 43 that is exposed to the end face 1b and the side faces 1d and connected to the external electrode 20.SELECTED DRAWING: Figure 2

The present invention discloses a lightning arrester, comprising an insulating tube, both ends of which are sealed with conductive seals, the insulating tube is filled with quartz sand, the quartz sand wraps an arc-starting wire and electrically connects the conductive seals at both ends, one end of the lightning arrester is fixedly connected to a grounding end or a live end via a connector, and the other end forms a discharge gap with the live end or the grounding end, the discharge gap is smaller than the air gap of the insulator, when a lightning overvoltage breaks through the discharge gap, the arc-starting wire fuses to induce an arc to discharge lightning, the arc is suppressed and extinguished by the quartz sand, and line tripping is avoided; compared with the prior art, the lightning arrester has the advantages of small cross-section, light weight, and the length can be manufactured and assembled according to the needs of the installation site, and the overall cost is greatly reduced, so that the lightning arrester can be installed on overhead transmission lines with a large area or even full coverage, thereby greatly reducing the lightning tripping rate and having technical and economic feasibility and practicality.

The present application relates to the field of lightning arresters, and specifically discloses a single-column multi-parallel independent unit lightning arrester, comprising a first unit and a second unit; the first unit comprises a first upper hardware, a first insulating jacket, and a first lower hardware connected in sequence, a first resistor, a first metal pad, and a first electrode are sequentially arranged inside the first insulating jacket along the direction from the first upper hardware to the first lower hardware, a wire is connected between the first upper hardware and the first lower hardware, the wire is passed between the first resistor, the first metal pad, and the first electrode, and a second insulating tube is arranged on the outside of the wire; the second unit comprises a second upper hardware, a second insulating jacket, and a second lower hardware connected in sequence, a second resistor, a second metal pad, and a second electrode are sequentially arranged inside the second insulating jacket along the direction from the second upper hardware to the second lower hardware. The present application sets up multiple parallel independent unit lightning arresters in one place, which is suitable for places with high protection performance requirements and difficult maintenance.

A printed circuit board (PCB) assembly for electrostatic discharge (ESD) protection is disclosed. The assembly includes a top layer comprising at least one signal track and configured to support at least a portion of a plurality of electronic components mounted thereon. A middle layer disposed beneath the top layer. The middle layer comprises at least one ground tack configured to receive electrostatic discharge currents from adjacent layers. A bottom layer disposed beneath the middle layer. The bottom layer comprising at least one power track and configured to support another portion of the plurality of electronic components. A plurality of metal discharge elements disposed on at least one of the top layer or the bottom layer. Each of the metal discharge element is electrically connected to the at least ground track of the middle layer.

The invention relates to a protective device (11) for an electronic component (10), wherein the protective device (11) can be arranged to at least partially encompass the at least one electronic component (10) and an electronic component (10) with such a protective device (11).

A protection device against pulsed currents intended to transmit signals having frequencies lying in a transmission frequency band. The protection device has a signal conduction path and a shielding disposed around the signal conduction path. The signal conduction path has two spark gaps mounted in series and an inductor element linking a portion of the signal conduction path situated between the spark gaps. The inductor element is linked to the shielding. The protection device is configured as a high-pass filter allowing passage over the signal conduction path of the signals having frequencies lying within the transmission frequency band.

A surge protection device (200), SPD, for protecting electrical circuits from transient overvoltage events is disclosed. The surge protection device includes an SPD base (220) comprising a set of terminals and a set of slots electrically coupled to the terminals, and an SPD module (230)comprising a housing, a set of pins configured to engage the slots, and a printed circuit board (PCB) bus contained within the housing. The PCB bus includes a first suppression circuit path and a second suppression circuit path. A suppression component is coupled to the first suppression circuit path. A switch is configured to automatically reconfigure the SPD from the first suppression circuit path to the second suppression circuit path upon failure of the suppression component. The SPD module may include a user-operable switch or jumper configured to select between a fail-open mode and a fail-closed mode. Redundant surge protection modules may be connected through a dual SPD base.

The invention relates to an electrode (100) for a horn spark gap, comprising a connection part (1) with a first connection point (1a); and a load part (2) with at least a second connection point (2a), wherein the second connection point (2a) is connectable to the first connection point (1a) and thereby the load part (2) is mechanically and electrically conductively connectable to the connection part (1); the load part (2) comprises a burn-resistant material; and the load part (2) forms an ignition area (10) for an arc, wherein the first connection point (1a) comprises at least a first contact surface (K1) and a second contact surface (K2) and the second connection point (2a) comprises at least a third contact surface (K3) and a fourth contact surface (K4), wherein when the first and second connection points (1a) are connected,2a) the first contact surface (K1) is in contact with the third contact surface (K3) and the second contact surface (K2) is in contact with the fourth contact surface (K4) and then within a region of the first connection point (1a) and / or within a region of the second connection point (2a) there is an axis of rotation (P) which runs perpendicular to a longitudinal direction of the load part (2) and the first contact surface (K1) and the third contact surface (K3) support a rotation of the connection part (1) against the load part (2) in a first direction of rotation about the axis of rotation (P) and the second contact surface (K2) and the fourth contact surface (K4) support a rotation of the connection part (1) against the load part (2) in a second direction of rotation about the axis of rotation (P), the first direction of rotation being opposite to the second direction of rotation.

The invention relates to a surge protection element comprising a housing (2), a surge protection component (3), an overcurrent protection element (4), and an indicator device (5, 6), wherein the indicator device has a force-absorbing portion (51) and an indicator portion (61), and wherein, when the overcurrent protection element is triggered, an actuating element (7) moves into a second position in which it applies a force to the force-absorbing portion, thereby initiating a movement of the indicator portion. A receptacle (8) for the overcurrent protection element is formed in the housing of the surge protection element, wherein the receptacle has an opening (81) through which the movable actuating element protrudes, and wherein a stop (82) is formed in the receptacle and an edge (91) is provided on the overcurrent protection element, by means of which edge the overcurrent protection element rests against the stop, wherein the stop is at a distance a from the force-absorbing portion and the edge is at a distance b from the front face of the actuating element such that the front face of the actuating element, in the first position, is at a predetermined distance x from the force-absorbing portion of the indicator device.

The present invention relates to a lightning protection system based on Coulomb's law, belonging to the field of lightning prevention technology. It comprises: a lightning conductor and a discharge ground wire for attracting lightning to a predetermined lightning strike object; an energy storage capacitor for charging the lightning conductor; a high-voltage DC power supply for charging the conductor; an electric voltage regulator for adjusting the voltage according to the intensity of lightning; a power supply for providing power to the high-voltage DC power supply and the overvoltage protection trigger controller; and a spherical gap discharge and protection circuit for ensuring the overvoltage safety of the entire circuit. The lightning protection system of the present invention can effectively avoid damage to humans caused by lightning and ensure the safety of people's lives and property. In addition, the lightning protection system of the present invention has a simple structure, is easy to install, and has good social and economic benefits.

The invention relates to an overvoltage protection assembly comprising: a modular circuit breaker (1) including a second phase connection terminal (2), a second neutral connection terminal (3) and a first housing (4), a modular surge arrester (5) including a third phase connection terminal (6), a third neutral connection terminal (7), a first earth connection terminal (8) and a second housing (9), electrical and mechanical connection means including a first phase electrical conductor (10) and a second neutral electrical conductor (11), characterized: in that it includes a connection module (12) including the electrical and mechanical connection means including the first phase electrical conductor (10) for connection to the second phase connection terminal (2) and to the third phase connection terminal (6),the second neutral electrical conductor (11) for connection to the second neutral connection terminal (3) and to be connected to the third neutral connection terminal (7), and a second earth connection terminal comprising an input for connection with the first earth connection terminal (8) of the modular surge arrester (5) and an output (15), and a third box (16), in that the modular circuit breaker (1), the modular surge arrester (5) and the connection module (12) respectively form a first entity delimited by the first box (4), a second entity delimited by the second box (9) and a third entity delimited by the third box (16).

The invention relates to an overvoltage protection device (12) for protecting a low-voltage supply system of a building from overvoltages. The overvoltage protection device comprises a main body (14), on which an interface (16) for coupling the overvoltage protection device (12) to a bus bar system is provided. Furthermore, a holding region (18) for an electrotechnical add-on part is arranged on the main body (14). In addition, a contact tongue (26, 28) is slidably mounted on the main body (14), which contact tongue is designed to electrically contact and mechanically secure the add-on part. The invention further relates to overvoltage protection assemblies having an overvoltage protection device (12) of this type. The invention additionally relates to a method for assembling an overvoltage protection assembly.

The invention relates to an overload protection device (1) for protecting electrical components (2), comprising at least two electrical components (2), comprising a carrier (3), which has a plurality of connecting elements (31) for connecting the electrical components (2), and comprising at least one actuator (4), at least one separating element (6) is displaceably arranged on the carrier (3), which separating element (6) is applied by the actuator (4) with a force (F) such that the separating element (6) can be moved by the actuator (4) from a first position into a second position, and the separating element (6) interacts with the two electrical elements (2) in such a way that the separating element (6) can be moved by the actuator (4) from the first position to the second position. In the event of a thermal overload, the two electrical components (2) can be transferred by the separating element (6) to the second position thereof.

The invention relates to the technical field of direct-current power transmission, in particular to an optimization method of a lightning arrester with a series gap and a related device.The optimization method comprises the steps that the steady-state insulation resistance, the series gap insulation resistance and a first fixed value factor of the lightning arrester with the series gap to be optimized are obtained, and the target maximum resistance value is determined according to the steady-state insulation resistance, the series gap insulation resistance and the first fixed value factor; obtaining action equivalent resistance and a second constant value factor of the lightning arrester with the series gap, and determining a target minimum resistance value according to the action equivalent resistance and the second constant value factor; constructing a target resistor assembly according to the target maximum resistance value and the target minimum resistance value; the target resistor assembly is connected to the two ends of the lightning arrester body of the lightning arrester with the series gap in parallel, the optimized lightning arrester with the series gap is obtained, and the technical problem that an existing lightning arrester with the series gap is difficult to adapt to a pseudo-bipolar direct-current power transmission system is solved.

The present disclosure relates to a high voltage bypass device (10), comprising a cavity (13), a trigger element arranged in the cavity (13), a reservoir (17) filled with a conductive, flowable material (18), and a shutter (19) separating the cavity (13) and the reservoir (17). The trigger element is connected to a first terminal (11) and a second terminal (12) of the high voltage bypass device (10). The shutter (19) is configured to open a passage between the cavity (13) and the reservoir (17) in case the trigger element is triggered by an overvoltage condition, such that the conductive, flowable material (18) at least partially fills the cavity (13), thereby forming a conductive path from the first terminal (11) to the second terminal (12). The present disclosure further relates to a voltage source converter (VSC), in particular a modular multi-cell converter (40), and an operating method for a high voltage bypass device (10).

A static electricity elimination component according to the present invention is provided with an element body, a first discharge electrode, a second discharge electrode, and a first lead-out electrode. The element body has a discharge cavity therein. The first discharge electrode is embedded in the element body and has a first exposed section that is exposed to the discharge cavity. The second discharge electrode is embedded in the element body, and has a second exposed section which is exposed to the discharge cavity and faces the first exposed section with a gap therebetween. The first lead-out electrode is embedded in the element body and is connected to the first discharge electrode. The first lead-out electrode has a higher resistance value than the first discharge electrode.

The invention discloses a device for suppressing transient potential difference between rail bars in a non-electrified section, a multi-electrode discharge gap combination formed by connecting a multi-electrode gas discharge tube and a piezoresistor in parallel is designed, and when the transient potential difference between the rail bars is caused by lightning stroke and the amplitude exceeds the action threshold of the multi-electrode discharge gap combination, the transient potential difference between the rail bars is suppressed. The multi-electrode discharge gap combination is switched on instantly, the potential difference between the rail bars is balanced, and the differential mode overvoltage between the rail bars is suppressed, so that trackside equipment is protected, and the fault probability of equipment such as a trackside rail transformer coil, a matched resistor and a circuit breaker is greatly reduced. In addition, the multi-electrode discharge gap combination is fixed in an insulating tube with a plug, is encapsulated by epoxy resin, is mounted in a protection box made of an SMC material, and is connected with the rail bars through rail connecting wires, so that the transient overvoltage suppression requirement between the rail bars can be met, the protection box is fixed at the bottoms of the rail bars, and the mounting mode is simple, convenient and easy to implement; and the device can adapt to the complicated working conditions of trackside temperature, humidity and vibration.

The invention discloses an intelligent nonlinear current-limiting direct lightning protection device, which belongs to the field of direct lightning protection and comprises a current-limiting lightning rod, a multi-gap assembly and a lightning current measurement assembly. By arranging the multi-gap assembly on the current-limiting lightning rod, when the lightning current exceeds the through-current capability of the current-limiting lightning rod, the lightning current is conducted and reduced through the main gap and the multiple gaps on the multi-gap assembly; under the action of the current-limiting lightning rod, the main discharge time of lightning is prolonged from microsecond level to millisecond level, and when the lightning flows through too many gaps, a radial arc spraying effect is generated to further prolong the main discharge time of lightning, so that the lightning waves are changed from continuous waves to discontinuous waves, flashover of the current-limiting lightning rod is avoided, and damage of lightning current to the rod body is avoided; the direct lightning protection device has a self-protection capability; by arranging the lightning current measurement assembly, the device has intelligent functions of lightning current data measurement and transmission, and lightning big data is formed to provide support for follow-up research, product improvement, customer demand meeting and the like.

A spark protection cap plate (20) is disclosed, the spark protection cap plate (20) comprising: a base (22); and two or more spark protection caps (21a, 21b, 21c); each spark protection cap (21a, 21b, 21c) includes a cover portion (24) extending from the base (22), the cover portion (24) defining a cavity (26) inside the spark protection cap (21a, 21b, 21c) within which an end (203) of the fastener (202) may be enclosed. Also disclosed is a fastener joint (200), the fastener joint (200) comprising: a structural member (28); two or more fasteners (202), each fastener (202) having a fastener end (203) protruding from a surface of the structural member (28); and a spark shield cap plate (20), the spark shield cap plate (20) comprising a base (22) and two or more spark shield caps (21a, 21b, 21c), each of the spark shield caps (21a, 21b, 21c) comprising a cover portion (24) extending from the base (22), the cover portion (24) defining a cavity (26) inside the spark shield cap (21a, 21b, 21c), an end (203) of the fastener (202) may be enclosed inside the cavity; and a cured sealing material (27) disposed between the spark shield cap plate (20) and the structure (28), the cured sealing material fixing the spark shield cap plate (20) to the structure (28) in a position such that each end (203) of each fastener (202) is enclosed within the spark shield cap (21a, 21b, 21c).