61results about "Switch operated by excess currents" patented technology

This invention provides a bimetallic strip circuit disconnection control method and system, relating to the field of circuit protection technology. By acquiring the bimetallic strip deformation signal and calculating the difference, and combining different thresholds and durations for judgment, it distinguishes between instantaneous large fluctuations and continuous small faults, achieving accurate tripping and early warning. It has the advantages of effectively distinguishing between normal instantaneous fluctuations and continuous electrical faults, avoiding false tripping, and providing early warning, thereby improving the accuracy and reliability of circuit protection.

Machine learning-based arc fault detection and nuisance trip avoidance includes (i) obtaining data representing properties of an electrical signal sensed by an arc-fault circuit interrupter, (ii) interpreting the properties of the electrical signal as indicating an arc fault, the interpreting being based on application of an initial artificial intelligence (AI) model, (iii) based on the interpreting, opening a switch of the arc-fault circuit interrupter to interrupt the conduction of a supply of power to a load output terminal, (iv) receiving an indication that the properties of the electrical signal do not reflect an arc fault, such indication being that the arc-fault circuit interrupter is to refrain from arc-fault-based opening of the switch, (v) obtaining an updated AI model, where the updated AI model undergoes training using the data representing the properties of the electrical signal as an example of the absence of an arc fault, and (vi) deploying the updated AI model in place of the initial AI model.

The object of the present invention relates to an electromechanical system for interrupting (1) an electric current exhibiting an overload anomaly and / or a short circuit and / or a residual current, comprising - at least one set (2) of current input connection terminals comprising at least, on the one hand, a connection terminal (2a) dedicated to the phase current and, on the other hand, a connection terminal (2b) dedicated to the neutral current, - at least one thermal relay (3) and / or an electromagnetic relay (4) and / or a differential current measuring device (5) coupled to a switch, characterized in that the interruption system (1) also comprises at least two sets (6) of current output connection terminals, each comprising at least one connection terminal (6a) dedicated to the phase current and one connection terminal (6b) dedicated to the neutral current, so that, on the one hand,Each output phase current connection terminal (6a) is connected to the input phase current connection terminal (2a) at a common node (7a), and, conversely, each output neutral current connection terminal (6b) is connected to the input neutral current connection terminal (2b) at a common node (7b).

A circuit breaker protecting an electric low-voltage circuit includes a housing with grid-side and load-side connections and a series circuit of a mechanical isolating contact unit on the grid side and an electronic interruption unit on the load side. The mechanical isolating contact unit has a handle opening and closing contacts. A current sensor unit is disposed in a conductor between the isolating contact unit and the interruption unit, for ascertaining a current level of the low-voltage circuit. A control unit is connected to the current sensor unit, electronic interruption unit, and mechanical isolating contact unit. When current and / or current / time thresholds are exceeded, prevention of a current flow in the low-voltage circuit is initiated. A power supply unit supplying energy to the circuit breaker is connected to conductors of the low-voltage circuit between the isolating contact unit and the interruption unit.

Embodiments of the present disclosure disclose a method for improving a performance of a pulsed-ultraviolet (PUV) device. The method includes monitoring an input current across a circuit breaker in communication with a UV lamp, where the input current is delivered by a power signal and is interrupted by the circuit breaker upon exceeding a predefined cut-off current; generating a pulse signal having a set of frequencies based on the power signal for driving the UV lamp, where the pulse signal is associated with a predetermined cut-off frequency that increases the input current beyond the cut-off current; determining a predefined threshold current less than the cut-off current; and configuring the pulse signal with multiple distinct pulse frequencies per second for a predefined configuration period based on the input current exceeding the threshold current. The distinct pulse frequencies per second include at least one pulse frequency greater than the cut-off frequency.

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 a circuit breaker for an electrical circuit. The circuit breaker (100) is arranged between a power supply (302) and a load (304), wherein the circuit breaker (100) comprises control means (104) configured to switch switching means (106) of the circuit breaker (100) between an ON-mode in which a current i is fed to the load (304), and an OFF- mode in which no current is fed to the load (304); wherein the control means (104) is configured to obtain a value of the current i fed to the load (304) when the switching means (106) is in the ON-mode; keep the switching means (106) in the ON-mode if the value of the current i is smaller than a switching current is of the circuit breaker (100); switch the switching means (106) into the OFF-mode if the value of the current i is larger than the switching current is of the circuit breaker (100); and switch the switching means (106) from the OFF-mode back into the ON-mode after a first time interval Furthermore, the invention also relates to a circuit and a method.

The invention relates to a circuit breaker for an electrical circuit. The circuit breaker (100) is arranged between a power supply (302) and a load (304), wherein the circuit breaker (100) comprises control means (104) configured to switch switching means (106) of the circuit breaker (100) between an ON-mode in which a current i is fed to the load (304), and an OFF-mode in which no current is fed to the load (304); wherein the control means (104) is configured to obtain a value of the current i fed to the load (304) when the switching means (106) is in the ON-mode; keep the switching means (106) in the ON-mode if the value of the current i is smaller than a switching current iS of the circuit breaker (100); switch the switching means (106) into the OFF-mode if the value of the current i is larger than the switching current iS of the circuit breaker (100); and switch the switching means (106) from the OFF-mode back into the ON-mode after a first time interval T1. Furthermore, the invention also relates to a circuit and a method.

A circuit breaker (105) for active detection of an arc fault is provided. The circuit breaker (105) includes a set of power electronics (110) configured to activate an arc fault detection, a current limiting resistor (125) in series with the set of power electronics (110) and a sensing and control circuitry (115) coupled to the set of power electronics (110) and storing in a memory for execution a detection algorithm code (135) with a detection logic (140). The sensing and control circuitry (115) monitors a load current of at least one device connected to the circuit breaker (105). The sensing and control circuitry (115) detects an arc-like signal in the load current, and by monitoring a change of the arc-like signal during a short on / off period of the set of power electronics (110), the detection algorithm code (135) determines an arc.

Arc fault protection for a digital power distribution system powering a device. The system includes an arc fault circuit interrupter ("AFCI") and a controller. The controller is connected to the AFCI. The controller is operable to control the AFCI to disable power to the device. The controller includes a processor and a memory. The controller is configured to send a digital power energy packet through the AFCI to the device, measure an error quantity associated with the digital power energy packet, evaluate the error quantity associated with the digital power energy packet, determine whether an arc fault condition exists based on the evaluation of the error quantity associated with the digital power energy packet, and control the AFCI to disable power to the device when it is determined that an arc fault condition exists.

The invention relates to a protective switching device for a low-voltage circuit, in which the magnitude of the current and voltage of the low-voltage circuit is determined periodically. On the one hand, the magnitude of the current determined in a first cycle is compared with a first current threshold value, in the case of which the first time window with a first duration is started, in which the effective value of the determined voltage is compared with a first voltage threshold value, in the case of which, in the case of undershooting the first voltage threshold value, a first information display is carried out. On the other hand, the effective value of the magnitude of the current determined in a second cycle is compared with a second current threshold value, in the case of which the second time window is started, in which, after the start of the second time window and after the first duration has elapsed, the effective value of the determined voltage is compared with the first voltage threshold value, in the case of which, in the case of undershooting the first voltage threshold value, a second information display is carried out.

An electrical protection device (14) comprises a housing (330), which can be mounted on the rail of an electrical panel; a main module (300) and two auxiliary modules (400, 500), each module comprising a conduction path (470, 570) including an input terminal (472, 572) at an upper end (340) of the housing, an output terminal (474, 574) at a lower end (338) of the housing, and a moving contact (476, 574) movable between a conduction position and an isolation position; a switching mechanism (450, 550) for switching the moving contact; a trip unit for switching the switching mechanism under the effect of an electrical fault; and a switching handle. The main module includes a breaking chamber (100). The device includes a functional component (350, 352), selected from a second trip unit and a monitoring system.The triggers and the cut-off chamber are adjacent to the input terminals, so as to be arranged between the input terminals and the functional component, the functional component being adjacent to the output terminals and extending over the entire width of the housing.

The present invention relates to a manual motor starter and, more specifically, to a trip device for a manual motor starter. A trip device for a manual motor starter according to an embodiment of the present invention comprises: a trip unit body forming the base of a trip unit; a fixed contact coupled to the lower portion of the trip unit body; a heater assembly inserted and coupled to the trip unit body and detecting the heat variation; a coil coupled to the upper portion of the trip unit body; a core unit inserted into the coil; a terminal rod coupled to the core unit and the trip unit body, and having one end portion forming a terminal unit; and an instant trip lever which is rotatably coupled to the trip unit body and is operated by the core unit, wherein a coil attachment portion in which the coil is inserted and installed protrudes from the trip unit body.

Arc fault protection for a digital electricity distribution system that provides power to a device. The system includes an arc fault circuit interrupter ("AFCI") and a controller. The controller is connected to the AFCI. The controller is operable to control the AFCI to disable power to the device. The controller includes a processor and a memory. The controller is configured to transmit a digital electricity energy packet through the AFCI to the device, measure an amount of error associated with the digital electricity energy packet, evaluate the amount of error associated with the digital electricity energy packet, determine whether an arc fault condition is present based on the evaluation of the amount of error associated with the digital electricity energy packet, and control the AFCI to disable power to the device when the arc fault condition is determined to be present.

An electric vehicle supply equipment (EVSE) using a solid-state circuit breaker (SSCB) with an integrated Electric Vehicle (EV) charging interface disposed within a distribution panel allows power to and from an electric vehicle. The EVSE solid-state circuit breaker further detects arcing on EV load connections or leakage current through ground and disengaging based on an arcing signature or leakage levels through ground. It uses proven materials and technologies that are produced at high volumes, hence taking advantage of economies of scale. Product will be compact in nature and housed in a standard building load center, eliminating the need for an external housing.

A circuit for a circuit interrupter is provided. The circuit may in include a first SCR configured to receive a first trigger signal at a gate of the first SCR, a second SCR configured to receive a second trigger signal at a gate of the second SCR, and a third SCR configured to receive a third trigger signal at a gate of the third SCR. A cathode of the first SCR may be connected to an anode of the third SCR. A cathode of the second SCR and a cathode of the third SCR may be connected to a ground. Methods of operating a circuit interrupter and a circuit are also provided.

The invention relates to a circuit breaker for protecting an electric low-voltage circuit, having: - a housing with grid-side connections and load-side connections for conductors of the low-voltage circuit; - a series circuit consisting of a mechanical separating contact unit and an electronic interruption unit, wherein - the separating contact unit is paired with the grid-side connections, and the interruption unit is paired with the load-side connections, and - the mechanical separating contact unit has a handle for closing and opening contacts; and - a current sensor unit, which is arranged in a conductor between the separating contact unit and the interruption unit, for ascertaining the level of the current of the low-voltage circuit. The circuit breaker is designed such that when current thresholds and / or current / time thresholds are exceeded, a process for preventing a current flow in the low-voltage circuit is initiated, and a power supply unit for supplying energy to the circuit breaker is provided, said power supply unit being connected to conductors of the low-voltage circuit between the grid-side connection and the separating contact unit.

An automatic recloser device and a method for operating the device are provided for use with a residual current device (RCD), the RCD comprising a contactor that can be opened or closed by rotating a first controller of the RCD. The automatic recloser device comprises a housing that at least partially encloses a piezoelectric motor and a mechanical linkage arranged between the piezoelectric motor and the first controller. The mechanical linkage is coupled to the piezoelectric motor and comprises a first rigid element configured to engage with the first controller.The piezoelectric motor is configured to apply a force in a first linear direction to move the mechanical linkage, and the movement of the mechanical linkage causes the first controller to rotate in a first direction of rotation, thereby closing the contactor.

The application discloses an external circuit breaker assembly of an electric energy meter, which comprises an electric leakage protection module, a controller and a plurality of circuit breakers. The plurality of circuit breakers are spliced along a linear direction, the electric leakage protection module is spliced at one end of the plurality of circuit breakers, and the controller is spliced on the same side of the plurality of circuit breakers and the electric leakage protection module. A plurality of rigid first conductive plates are arranged at one end of the electric leakage protection module, and rigid second conductive plates in conductive connection with the first conductive plates are arranged at corresponding ends of the circuit breakers. One end of the electric leakage protection module is provided with a plug or a slot, and one end of the plurality of circuit breakers is provided with a slot or a plug. The slot or the plug is formed by splicing adjacent circuit breakers. When splicing, the first conductive plates and the second conductive plates are longitudinally overlapped and fixed by screws. The conductive plates are provided with connecting holes for the screws. An opening for the operation of a screwdriver is arranged above the splicing position, a plurality of openings are communicated and provided with a cover plate, continuous side grooves are formed on both sides of the opening, and the cover plate is in guided plug-in connection with the side grooves. The application has the advantages of compact structure, convenient installation and reliable connection.

A wiring device including an enclosure including a front cover and a rear cover, a first printed circuit board (PCB) disposed within the enclosure, a first direct current (DC) port, a plurality of power electronics supported by a surface of the first PCB and configured to provide power to the first DC port, and a heat sink in direct contact with at least one of the plurality of power electronics and disposed within an interior of the rear cover.

The invention relates to the field of electrical engineering and power engineering and can be used for the timely emergency shutdown of electrical equipment under the effect of high temperatures, for example in the event of fire, as well as in the event of arcing. The technical result consists in improving the timeliness of an initial fire-extinguishing action and more effectively impeding the spread of fire in an enclosed space such as, in particular, an electrical control panel, while simultaneously interrupting an electrical circuit. The proposed device, which acts like a standard arc-fault circuit interrupter (AFCI) for single-phase or three-phase connections, includes a module containing an aerosol-forming or gas-forming composition (aerosol module), which projects beyond a housing of the device, a self-combusting heat-sensitive igniter disposed on the projecting portion, and a heat-sensitive shutdown device that is connected by conductors to a mechanism for the automatic shutdown of neutral and phase A in the case of a single-phase embodiment and of any phase in the case of a three-phase embodiment.

Embodiments of this application provide a switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact. When a circuit is faulty, the power supply system can automatically drive the switch provided in this application to be switched off without a manual operation.

A module of an AM / PD device including a PCB and a bus bar including one or more bus bar contacts. The module further including one or more contact arms having one or more moveable contacts configured to be in a first position and a second position, wherein when in the first position the one or more moveable contacts are in physical contact with the one or more bus bar contacts and when in the second position the one or more moveable contacts are physically separated from the one or more bus bar contacts. The module further including a coil assembly coupled to an actuating device, the actuating device coupled to the one or more contact arms. Wherein the coil assembly, via the actuating device, moves the one or more moveable contacts from the first position to the second position.

A virtual electronic circuit breaker having an electrical relay and a control circuit, the control circuit including a load and wire protection ("OC") detection unit, a microprocessor and a driver. The OC detection unit is configured to monitor a power flow and the electrical relay is effective to control it. The driver is effective to cause the relay to stop the power flow upon receipt of a deactivation command. The OC detection unit is effective to cause the driver to receive a deactivation command if the OC detection unit senses that a short circuit condition or an overload condition exists. The microprocessor of the control unit is configured so as to be capable of, at least, receiving input from the OC detection unit and sending output to the driver.