35 results about "Arc flash" patented technology

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.

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 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.

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.

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 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.

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.

The utility model provides a kind of safety protection device of power frequency withstand voltage test of arc flash, it is related to power frequency withstand voltage test technical field, including operation plate;The front side of the operation plate is installed with emergency control panel near the position of bottom end, and the front side of operation plate is installed with LED digital display near the position of top end;The inside of table base is installed with high voltage test transformer near the position of right end, and the inside of table base is installed with test instrument control machine near the position of left end, and the inside of table base is installed with electric pressure regulator in central position;Through the setting of test instrument control machine, electric pressure regulator and emergency control panel, after the leakage current of product in test exceeds rated value, automatic or manual mode control test instrument control machine and electric pressure regulator are realized to work in the mode of voltage reduction, solve the problem that traditional power frequency withstand voltage test does not have the function of emergency automatic release of the voltage of the tested product, reduce the personal safety level in the process of power frequency withstand voltage test.

The invention relates to the field of solid-state transformers, in particular to a power electronic transformer which comprises an outer shell, the outer shell is composed of four stand columns and five panels, and the panels on the two sides are provided with shutter structures used for achieving inside and outside ventilation of the outer shell; the right front portion is in an opening state, and lifting lugs are arranged at the corners of the top and used for hanging and conveying of equipment. The converter, the connecting line, the low-voltage direct-current bus and the inverter are all embedded in the outer shell; the converter is used for realizing electrical isolation and voltage level conversion, converting a power frequency alternating current input by a unit level into a direct current through a converter silicon carbide module and then inverting the direct current into a high-frequency alternating current, and the output end of the converter is fixedly connected with the connecting line; according to the power electronic transformer, abnormal signals such as electric arc flashes in equipment are rapidly captured through the visual sensor, the sealing door is automatically triggered to be locked, and the situation that an operator opens the sealing door unknowingly is prevented.

The vehicle charging system (10) for an electric vehicle (14) comprises charging terminals held in a housing (102) which is connected to appropriate conductors to form power transmission lines. The vehicle charging system includes a charging controller for controlling the vehicle charging along the power transmission lines. The vehicle charging system includes an arc detection antenna (160) coupled to the charging controller. The arc detection antenna is positioned near the power transmission lines to detect arc signatures along the power transmission lines from an arcing event. The arc detection antenna transmits an arc output signal to the charging controller based on the detection of the arc signature.

The invention relates to a photovoltaic converter (1) with a plurality of photovoltaic inputs (8) for at least one photovoltaic module (3) or at least one photovoltaic string (4), also called a multi-string photovoltaic converter, and a photovoltaic arrangement (1, 3, 4) with such a photovoltaic converter 1. The photovoltaic inverter (1) is equipped with a feed-in inverter (6), a DC link (7), a plurality of photovoltaic inputs (8) for each photovoltaic module (3) or photovoltaic string (4), an arc fault detector (12), a plurality of DC / DC converter groups (10), and a control unit (13). The feed-in inverter (6) is configured to extract electrical energy stored in the DC link (7), convert the extracted stored electrical energy into an AC, and feed the converted electrical energy into a power supply network (2). The arc fault detector (12) is configured to detect the occurrence of an arc fault at one of the photovoltaic inputs (8).Each DC / DC converter group (10) contains one or more DC / DC converters (11), wherein each DC / DC converter group (10) is connected between a respective subset of the plurality of photovoltaic inputs (8) and the DC link (7) and is configured to extract PV electrical energy available at the respective subset of photovoltaic inputs (8) and feed it into the DC link (7). The control unit (13) is connected to at least the arc detector (12) and the feed-in converter (6). According to the invention, the arc detector (12) is also configured to indicate to the control unit (13) by means of a signal the subset of photovoltaic inputs (8) at which the arcing event occurred.Furthermore, the control unit (13) is designed to interrupt the supply of PV electrical energy to the DC intermediate circuit (7) at only the indicated subset of the photovoltaic inputs (8) in response to the signal from the arc detector (12).

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.

In a method and system, a low-energy protection mode is implemented at a first trip current threshold setting for a circuit breaker(s) of an electrical system to provide arc flash protection and allow for user maintenance on or in proximity to electrical equipment on a protected circuit of the electrical system. If a higher current demand by the protected circuit or electrical equipment thereon is anticipated to exceed the first trip setting under normal equipment operation, the first trip setting is temporarily changed to a second trip current threshold setting for the breaker(s) to accommodate the higher current demand at a high-energy protection mode, and user maintenance is restricted on or near the electrical equipment on the electrical system during operation at the second trip setting. The second trip setting provides a higher allowable current on the protected circuit than the first trip setting.

The present invention relates to an arc flash resistant glove (100, 200). The glove (100, 200) comprises a fire resistant glove liner (2), the glove liner (2) consisting of a palm side (3) and a back side (4), the palm side (3) comprising a palm side finger portion (3A), a palm side center portion (3B) and a palm side cuff portion (3C), the back side (4) comprising a back side finger portion (4A), a back side center portion (4B) and a back side cuff portion (4C). The glove liner (2) is provided with a fire resistant coating comprising a fire resistant material, the fire resistant coating comprising: a back side coating portion (5B) having an area of at least 4 cm 2 and being arranged on the back side center portion (4B), and a palm side coating portion (5A) arranged on the palm side (3) of the glove liner (2); wherein the palm side coating portion (5A) covers at least 90% of the palm side finger portion (3A) and at least 90% of the palm side center portion (3B); wherein the average coating weight of the back side coating portion (5B) is in the range of 5-80% of the average coating weight of the palm side coating portion (5A). Also disclosed is an arc flash resistant glove (100, 200) and a method of manufacturing an arc flash resistant glove (100, 200) or a heat resistant glove (100, 200).

This disclosure relates to relatively thin and light weight multilayer textile composites that can provide a high level of protection from the thermal hazards associated with an electrical are flash. The multilayer textile composites comprise a laminate layer stitched with one or more of a laminate or flame retardant textile layer(s).

The utility model discloses a Roman arc flashing forming device which is characterized in that the two ends of a central shaft are symmetrically and rotatably connected with inner rotating plates, outer rotating plates are rotatably mounted at the positions, located on one sides of the inner rotating plates, of the two ends of the central shaft, and an inner arc plate is fixedly connected between the bottom ends of the two inner rotating plates; according to the Roman arc flashing device, the overall radian of the inner arc plate and the outer arc plate can be adjusted through mutual dislocation of the inner arc plate and the outer arc plate, so that the requirements of different buildings and positions for the radian and the angle of Roman arc flashing are met, forming construction is more accurate, and the construction efficiency is improved. And meanwhile, the outer positioning plate and the inner positioning plate can be fixed through fixing long bolts, then the relative angle and position between the inner arc plate and the outer arc plate are locked, the rigidity of the overall structure is improved, equipment is more stable during construction forming, the forming mode is simple and convenient, demolding is easy and convenient after forming, and follow-up repeated use is facilitated.

A ventilation unit and controller device comprises a ventilation unit with a housing. The housing has an intake port permitting flow of gas into the housing and an exhaust port permitting flow of gas out of the housing. Within the housing, a motorized fan is positioned to direct gas into the housing via the intake port and out of the housing via the exhaust port. A controller capable of controlling the ventilation unit communicates with a sensor capable of detecting an environmental stimulus and responding thereto. A source of electric current provides power to the ventilation unit and controller device. The device is capable of being removably attached via fasteners to an arc flash hood, and the arc flash hood comprises a ventilation opening to permit gas discharged by the device to enter the arc flash hood.