55 results about "Arc flash" patented technology

The invention relates to the technical field of power distribution network overhead line pole-mounted switches, and discloses an all-insulation vacuum circuit breaker which comprises a circuit breaker body, a plurality of sets of pole columns are arranged above the circuit breaker body, the top of each set of pole column is provided with an all-insulation quick-connection wire inlet terminal, and the side edge of each pole column is provided with an isolation knife static end. The front end of the isolation knife static end is provided with an isolation knife moving end, and the tail part of the isolation knife moving end is connected with an all-insulation quick-connection outgoing line terminal. According to the scheme, the condition of inter-phase short circuit or inter-phase flashover is eliminated, the problem that the isolation knife is bounced off or virtually closed due to the fact that instantaneous current is too large is avoided, and a key effect is achieved on effective closing of a circuit. Compared with a common inner cavity assembly type pole, the integrated casting solid-sealed pole has the advantages that the electrical performance is more stable and reliable, and the partial discharge capacity under rated voltage is greatly reduced. And the embedded electricity taking capacitor can be configured with controllers with different powers, a potential indicator and a temperature sensor, so that problems of the circuit or the circuit breaker body can be found in time and maintained in time.

The invention provides a pantograph supporting insulator, which relates to the field of pantograph accessories and comprises a flange base, a core column is mounted at the upper end of the flange base, a plurality of umbrella skirts are arranged on the outer side of the core column, a cavity quadrangular cone is arranged in the core column, and an insulating gas pipe of a straight pipe section and a spiral pipe section which are communicated together is further arranged in the core column. Wherein the spiral pipe section is arranged on the cavity quadrangular cone, the free end of the spiral pipe section is connected with a lower air pipe joint arranged on the outer wall of the flange base, the lower air pipe joint can be connected with an air source air pipe in a motor train unit body, and the free end of the straight pipe section is connected with an upper air pipe joint on the outer wall of the core column. And the upper air pipe joint can be connected with an air pipe of the pantograph. According to the gas channel with a special shape, the pantograph rising response speed of the motor train unit is increased, and meanwhile, the arc flash distance in the insulating gas pipe is effectively increased, so that the insulator can still meet the technical requirement of rated lightning impulse withstand voltage of 185kV after being broken down by lightning impulse voltage.

The application discloses a high-energy extremely-short-pulse-width incandescent light source system based on argon, and relates to the field of air flow tests.The high-energy extremely-short-pulse-width incandescent light source system comprises a high-voltage electrode for performing arc flash when high voltage is applied, the high-voltage electrode comprises a high-voltage anode and a high-voltage cathode capable of performing arc flash when high voltage is applied, and the high-voltage anode and the high-voltage cathode have a predetermined distance; an argon supply device for supplying argon between the high-voltage anode and the high-voltage cathode; a light device and a condenser lens group oppositely arranged on both sides of the high-voltage electrode; a power supply for supplying power to a high-voltage energy storage device, wherein the high-voltage energy storage device is electrically connected with the high-voltage electrode; a control module for performing time sequence control on the high-voltage anode and the high-voltage cathode; and an input and output module connected with the control module and the power supply.The application uses argon instead of conventional air as an ionization medium in the high-voltage electrode, so that the extremely-short-pulse-width can be realized when arc flash occurs, and the electrode can be prevented from being oxidized and damaged.

This utility model relates to the field of arc flash protection technology and discloses an arc flash protection device for use in a power distribution cabinet. The device includes a mounting frame, an externally fixed mounting plate, a top cover, a connecting plug, an internally inserted optical fiber body, an arc flash probe, a rotatably connected winding roller, a limiting collection mechanism, and an externally mounted auxiliary installation mechanism. During use, the opening and closing degree of the clamping block can be adjusted by pressing a button to accommodate optical fiber cables of different sizes. The movement of the limiting roller ensures constant contact and limiting between the limiting roller and the optical fiber cable. Rotation of the bidirectional threaded rod allows for adjustment of the mounting block position to accommodate different pre-drilled mounting holes in the power distribution cabinet.

The utility model relates to a zero flying arc arc extinguishing chamber structure of circuit breaker, a zero flying arc arc extinguishing chamber structure of circuit breaker, including the casing formed by the upper cover, middle cover and base screw connection, install arc extinguishing chamber in the base, the upper and lower both ends of middle cover are equipped with corresponding several wiring terminals, the arc extinguishing chamber includes contact head support, the arc extinguishing grid piece of several connected in the both sides of contact head support and the peripheral baffle connected in the end of arc extinguishing grid piece, the peripheral baffle is equipped with the air outlet matched with the position of arc extinguishing grid piece, the base still is equipped with the baffle groove and the arc baffle of interference connection in baffle groove, the position of arc baffle corresponds with air outlet, is equipped with several through -holes on this arc baffle, the through -hole array forms the net -like structure, has realized arc baffle alignment air outlet, the arc baffle on the physical isolation blocks arc extinguishing chamber and does not completely extinguish the arc, the through -hole on arc baffle further separates arc, accelerates the remaining arc to extinguish, avoids the short circuit of circuit breaker because of the arc that sprays.

1. The name of the design product: electric arc flashlight. 2. The use of the design product: for lighting. 3. The design points of the design product: in appearance. 4. The picture or photo that best shows the design points: perspective view.

An arc flash protective hood device. The protective hood is fitted with a passive blackbody radiation shield device formed with facing plates, each plate having a plurality of slots therethrough, the slots in one plate being in offset registration with the slots in the other plate, thereby creating a semi-tortuous path for fluid flow through the device. The semi-tortuous path for air flow is so formed to prevent arc-flash energy from passing through the shield device. Alternatively, the shield device may be a single, integral element, or each plate may be made in two or more segments. The blackbody radiation shield device may be mounted in an opening in a hood, and several such shield devices may be mounted in several openings in the hood.

The utility model relates to a high-voltage plastic shell isolation switch. The high-voltage plastic shell isolation switch comprises a contact assembly and an arc extinguishing assembly. The contact assembly comprises a fixed contact and a moving contact, the fixed contact is fixedly arranged, the moving contact can be movably arranged relative to the fixed contact, and the moving contact and the fixed contact are electrically connected when being in contact; the arc extinguishing assembly comprises an arc extinguishing shell and gas generating parts, an arc extinguishing space is arranged in the arc extinguishing shell, the moving path of the moving contact is located in the arc extinguishing space, the two gas generating parts are located in the arc extinguishing space and arranged at intervals, the static contact and the moving contact are located between the two gas generating parts, and the spacing distance between the two gas generating parts is 8-12 mm. According to the scheme, when the moving contact and the static contact are disconnected, the exhaust speed is increased, airflow is equally divided, arc extinguishing is efficient, and then zero flashover is achieved.

A vehicle charging system (10) for an electric vehicle (14) comprises a housing (102) with a plug end for connecting to a charging device (40) and a charging connector (107) held by the housing and connected to a current conductor (105) to form a current transmission line. The vehicle charging system includes a charge controller (140) for controlling the vehicle charging along the current transmission line. The vehicle charging system includes a current sensor assembly (34) coupled to the charge controller, which monitors the current transmitted via the current transmission line and generates a current output signal (178) that is transmitted to the charge controller. The current sensor assembly is configured to detect an arc signature from an arcing event and generates an arc output signal (188) that is transmitted to the charge controller based on the arc signature detection.

A method of protecting individuals working at an electrical circuit includes: acquiring image data about an area of risk with an image acquisition device; identifying a human who is in or is about to enter the area of risk based on the image data; determining whether each identified human is wearing personal protective equipment (PPE) based on the image data; and permitting operation on the electrical circuit upon concluding that the each identified human is wearing the PPE. The electrical circuit poses a risk of physical injury to a human in the area of risk from an arc flash.

A device includes an electro-mechanical switching device having an open-circuit and closed-circuit conditions and a path of least resistance having a path input and a path output with the switching device between the input and the output. The device includes a bypass power switch device that comprises a solid-state circuit interrupter and that is configured to conduct current between the input and the output in response to an open-circuit condition of the switching device. The device includes a current sensor that is connected to the output and configured to detect a fault current event. The device includes an actuator that is coupled to the switching device and a controller that is configured to generate a trigger signal to activate the actuator to cause the open-circuit condition of the switching device and to interrupt the fault current event by the power switch device, based on the detected fault current event.

An Energy Reducing Maintenance Switch (ERMS) connected to an electrical circuit includes: a switch that activates the ERMS upon being closed or turned-on; a normally-open first contact that closes to activate an instantaneous trip setting of a relay upon activation of the ERMS; and a second contact. The instantaneous trip controls an arc flash in the electrical circuit, and the activated instantaneous trip setting of the relay reduces time of the arc flash in the electrical circuit. Upon activation of the ERMS, the second contact closes to initiate ERMS activation alert in two or more forms.

The utility model discloses an embedded zero-flashover device, which comprises a plurality of zero-flashover modules embedded in a plurality of wiring ports of a wiring end of a circuit breaker and an outer casing fixed on the wiring end, each zero-flashover module comprises an arc-extinguishing inner casing, an arc-extinguishing assembly and an insulating partition plate, the arc-extinguishing inner casing is inserted in the wiring port, and the insulating partition plate is inserted in the arc-extinguishing assembly. The bottom of the zero-flashover module is provided with a plurality of jack structures communicated with the arc-extinguishing cavity at intervals, the arc-extinguishing assembly is inserted into the arc-extinguishing cavity through the jack structures, the insulating partition plate is inserted into the arc-extinguishing cavity and shields the jack structures, and the zero-flashover module plays roles in secondary arc extinguishing, metal particle adsorption and free gas neutralization in the wiring port of each phase. According to the zero-flashover module, the embedded installation is realized at the wiring end by utilizing the position space of the existing wiring port, so that the size of the outer casing can be reduced, the installation size of the whole zero-flashover device is reduced, the modular assembly effect is realized, and the use performance of the product is improved.

Circuit breaker (100', 100'') for a conductor system with a neutral conductor and at least one other conductor, and with a housing (10'a, 10''a; 10b) in which space is provided for each conductor, in which two separable contact elements are arranged, by which a switching contact for the respective conductor is formed, and with a unit (20) for detecting an arc and a tripping unit (22) coupled to this unit (20) for causing the switching contact for the neutral conductor to open in the event of an arc being detected according to a predetermined criterion, characterized in that the unit (20) for detecting an arc and the tripping unit (22) are arranged in the space (10'a) for the neutral conductor.

An arc flash protective headgear includes a transparent protective screen that is connected to an immobile frame part acting as supporting structure. A protective function for a foldable visor is ensured under all conditions, including in particular in the event of a power failure. The movable visor can be locked with respect to the immobile head protection part in at least one position by an electrically actuatable locking mechanism. The locking mechanism is automatically locked using a sensor and electronics module, the energy supply of which is provided by an energy store or energy generator.

The invention discloses a high-energy ultra-short pulse width incandescent light source system based on argon, and relates to the field of air flow tests, the high-energy ultra-short pulse width incandescent light source system comprises a high-voltage electrode for performing arc discharge flash when high voltage is applied, and the high-voltage electrode comprises a high-voltage anode and a high-voltage cathode which can perform arc discharge flash when high voltage is applied, a preset distance is formed between the high-voltage anode and the high-voltage cathode; the argon supply device is used for conveying argon between the high-voltage anode and the high-voltage cathode; the focusing device and the condensing lens group are oppositely arranged on the two sides of the high-voltage electrode; the power supply supplies power to the high-voltage energy storage device, and the high-voltage energy storage device is electrically connected with the high-voltage electrode; the control module is used for performing time sequence control on the high-voltage anode and the high-voltage cathode; and the input and output module is connected with the control module and the power supply. Argon instead of conventional air is used as an ionization medium in the high-voltage electrode, so that extremely short pulse width can be realized during arc flash, and the electrode is prevented from being oxidized and damaged.

The invention relates to an aircraft electrical cable (9) comprising an arc flash protection sheath, said sheath comprising: a first sheath (1) positioned around said electrical cable (9) and configured to electrically insulate said electrical cable (9) by absorbing the energy of an electric arc originating from a defective portion of said electrical cable (9) and enveloping said defective portion; a second sheath (2) positioned around said first sheath (1), said second sheath (2) being configured to contain said first sheath (1) and to electrically insulate said first sheath (1) by absorbing residual energy from said electric arc having passed through said first sheath (1). Figure 1.

This utility model relates to the technical field of arc flash protection devices. It provides a high-voltage busbar arc flash protection device, including a main body with terminals mounted on its side wall, an end cover, a mounting base, an installation mechanism, and an arc flash sensor. The end cover is fixedly mounted on the main body and has a display screen and control buttons. The mounting base is located on one side of the main body and has multiple fixing bolts running through it. The installation mechanism is located between the mounting base and the main body for fixing the main body. The arc flash sensor is mounted on the main body. The main body contains a controller and an arc flash protection main controller. This technical solution addresses the problem of low installation and disassembly efficiency in existing arc flash protection devices.

Vehicle charging system (10) for an electric vehicle (14), comprising charging terminals held in a housing (102) and connected to corresponding conductors (105) to form power transmission lines (166, 168). The vehicle charging system includes a charging controller (140) for controlling the vehicle charging along the power transmission lines. The vehicle charging system includes an arc flash sensor assembly (160) coupled to the charging controller. The arc flash sensor assembly includes a diversity antenna (162) for detecting arc flash signatures along the power transmission lines from an arc flash event. The diversity antenna transmits an arc flash output signal to the charging controller based on the detection of the arc flash signature.

An apparatus for blocking arc flash in an arc welding environment is provided. A roller assembly has a housing and a bottom portion with a first protruding peg element. The roller assembly is configured to be mounted at any of multiple discrete positions on a top portion of a welding table via the first protruding peg element. A handle assembly has a bottom end with a second protruding peg element. The handle assembly is configured to be mounted at any of the multiple discrete positions on the top portion of the welding table via the second protruding peg element. An arc shading curtain is mounted between an internal portion of the housing and the handle assembly. The roller assembly is configured to apply a rolling action to automatically retract the arc shading curtain into the housing. The apparatus is configured to be portable by a human user.

An arc flash protection system includes: an arc flash detection module electrically connected directly to a cord coupled to an electrical load and electrically connected to a ground fault circuit interrupt (GFCI) outlet, the arc flash detection module configured to: measure at least one of voltage and current of the cord; and based on the at least one of the voltage and the current of the cord, determine and indicate whether an arc flash condition is present; and a GFCI triggering module configured to, in response to the arc flash detection module indicating that an arc flash condition is present, output a predetermined current to a ground conductor of the cord.

Arc Flash Protection Device This description relates to an arc flash protection device (50) comprising a first electrically conductive rod (60) having a first pointed end (61), an electrically conductive part (40), the first pointed end (61) being separated from the electrically conductive part (40) by a gap (62), a first electrical conductor (54) connected to the first electrically conductive rod (60), and a sensor (58) configured to detect the passage of an electric current in the first electrical conductor (54). Figure for the abstract: Fig. 1

This invention relates to the field of artificial intelligence and discloses an intelligent welding method and system based on machine learning. The method, through three stages—sparse sensor signal acquisition of the molten pool, embedding of physical prior knowledge, and lightweight temporal feature reconstruction—predicts the width, depth, and oscillation frequency of the molten pool in real time, supporting millisecond-level closed-loop control. The system consists of five modules: sensor acquisition, physical constraint injection, 1D convolutional network reconstruction, PID control execution, and precise synchronous calibration. Through this architecture, the invention achieves sub-millimeter-level prediction accuracy with a low power consumption of 15W, resists arc flash interference, supports online self-learning and multi-process template switching, significantly improving welding stability, adaptability, and deployment convenience, making it suitable for intelligent manufacturing scenarios.

This utility model relates to the field of arc flash protection technology and provides an arc flash protection device, comprising: a main control device, wherein a display part and an operation part are respectively provided at the upper and lower ends of the main control device; an upper protective cover and a lower protective cover, wherein the upper and lower protective covers are arranged in an array on the front side of the main control device to protect the upper and lower ends of the main control device; an upper protrusion and a lower protrusion, wherein the upper protrusion and the lower protrusion are respectively provided at the bottom and top of the upper and lower protective covers; a lifting structure, wherein the lifting structure is symmetrically arranged on the left and right sides of the lower protrusion; and a snap-fit ​​structure. Compared with the prior art, the beneficial effects of this utility model are: during use, by providing upper and lower protective covers at the upper and lower ends of the main control device, the working parts of the main control device are prevented from being contaminated, and cleaning is convenient. Furthermore, the covers can be opened individually or in conjunction as needed for operation and viewing.

The utility model discloses a low-voltage capacitance compensation cabinet with an abnormity monitoring mechanism, which comprises a compensation cabinet body and an upper cabinet cover installed at the opening position of the top end of the compensation cabinet body, and L-shaped blocking feet are integrally formed at the corners of the bottom end of the upper cabinet cover. The upper cabinet cover is slidably connected with the top end of the compensation cabinet body in a sleeving mode through L-shaped blocking feet, a monitoring unit is installed on the top wall of the upper cabinet cover, and longitudinal butt joint beams are fixed to the corners of the top of the upper cabinet cover. The left and right inner walls of the compensation cabinet body are fixedly provided with supporting plates which are used for supporting the longitudinal butt joint beams and are in bolted connection with the longitudinal butt joint beams. According to the utility model, operation and maintenance personnel can directly open the upper cabinet cover to carry out necessary operation, the maintenance process is simplified, and the structural design reduces the risks of electric shock and arc flicker in the operation process and improves the working safety.

The invention discloses an electric arc protection test system and test method for an electric arc prevention hand protection product, and relates to the technical field of electric arc protection performance tests.The system comprises a power supply module used for supplying power to electric arc protection test; the start / stop module is used for controlling the switching-on and switching-off operation of the power supply module according to the start / stop control instruction; the anti-arc hand protection product testing device is used for matching and fixing the anti-arc hand protection product, generating a test arc according to power supply of the power supply module for testing, and collecting arc protection test parameter data; the measurement and control protection module is used for monitoring power supply parameter data in real time, identifying abnormity and generating a start / stop control instruction; and the data analysis and calculation module is used for acquiring test parameter data, dynamically adjusting the power-on duration of the start / stop module, performing multi-data acquisition and protection index calculation, and outputting an arc protection grade result. According to the invention, safe, reliable and accurate evaluation of the protection performance of arc protection hand protection products such as gloves and the like can be realized.

Arc Flash Protection Device This description relates to an arc flash protection device (50) comprising a first electrically conductive rod (60) having a first pointed end (61), an electrically conductive part (40), the first pointed end (61) being separated from the electrically conductive part (40) by a gap (62), a first electrical conductor (54) connected to the first electrically conductive rod (60), and a sensor (58) configured to detect the passage of an electric current in the first electrical conductor (54). Figure for the abstract: Fig. 1

An arc flash protection system and method are used to generate a worst-case arc-flash incident energy for downstream electrical equipment based at least on device information obtained for the downstream electrical equipment, constant arc-flash incident energy curves based upon the parameters of the downstream equipment, and the tripping time / current characteristics determined for a primary electrical protective device associated with the downstream electrical equipment. An arc flash label for the downstream electrical equipment is generated based at least on the worst-case arc-flash incident energy generated for the downstream electrical equipment. In a local hosting embodiment, the primary electrical protective device is configured for determining the worst-case arc-flash incident energy for downstream electrical equipment connected thereto. In an external hosting embodiment, an arc flash labeling computer is configured to provide sophisticated outputs in addition to determining the worst-case arc-flash incident energy for downstream electrical equipment connected to a primary electrical protective device.

A circuit breaker includes a contact system and an arc-extinguishing chamber. An electric arc generated by the contact system enters the arc-extinguishing chamber and is cut by an arc-extinguishing grid assembly within the chamber. The contact system includes a moving contact and a stationary contact. The moving contact includes at least two moving contact pieces arranged side-by-side. Moving main contacts and moving arc contacts are arranged at corresponding positions on the at least two side-by-side moving contact pieces. Stationary main contacts and stationary arc contacts are arranged on the stationary contact at positions corresponding to the moving main contacts and moving arc contacts on the moving contact pieces. At least one partition is arranged in the arc-extinguishing chamber from the separation point between the moving and stationary contacts to the inner side of the arc-extinguishing grid assembly. The at least one partition divides this area into at least two different arc channels. A gap exists between the at least one partition and the end face of the moving contact near the arc-extinguishing chamber. In this circuit breaker, at least one partition can divide the space below the inner side of the arc-extinguishing grid assembly into two chambers, thereby compressing the arc and ensuring that the arc can enter the arc-extinguishing grid. Meanwhile, using the same volume within the arc-extinguishing chamber, the arc-extinguishing grid is made into an "L" shape, with the grid fully arranged. At the same time, two layers of deionization structure are set up to gradually block and deionize the arc, thus achieving the purpose of both extinguishing the arc and eliminating arc flash.