116results about "Switch operated by excess currents" patented technology

The present disclosure 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 disclosure 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.

The present invention describes a molded case circuit breaker, comprising: a trigger device provided with at least one rotating bar; a fixed adjustment bar arranged, in a movable and rotatable manner, on said rotating bar of the trigger device and in the direction of movement of an operating handle; a plurality of bimetals provided, in their upper portion, with transverse distance adjustment elements; wherein said circuit breaker further comprises a variable adjustment disarming bar disposed upon said fixed disarming bar, said variable adjustment disarming bar having concave surfaces; wherein the concave surfaces are arranged, respectively, on the flat contact surfaces; wherein the concave surfaces each comprise an inclined portion projecting frontally to the upper portion of a plurality of bimetals; and wherein the variable adjustment disarming bar extends along the length of the fixed disarming bar; and a circuit test button comprising a first drive bar physically associated with said fixed disarming bar and a second actuation bar physically associated with said variable adjustment disarming bar.

The present disclosure pertains to systems and methods for rapid fault neutralization. An apparatus for managing an electrical fault in an electrical system can include a bridging member configured to establish a conductive pathway between contact points that are at differing electrical phase potentials within the electrical system. The apparatus can include a propulsion system configured to cause movement of the bridging member towards the contact points in response to the electrical fault in the electrical system, thereby initiating the conductive pathway. In this way, the apparatus responds to the electrical fault by initiating a controlled electrical arc through the conductive pathway.

The invention relates to an electrical safety device (30) with a power input (41), at least one power output (42, 43, 44) and a monitoring circuit (45) for monitoring an electrical parameter of the power output (42, 43, 44); wherein the monitoring circuit (45) is configured to activate a triggered state of the safety device (30) as a function of the electrical parameter, in particular when the electrical parameter exceeds a threshold value, in which state the power output (42, 43, 44) is electrically separated from the power input (41); wherein a communication interface (46) with at least one communication pin (pin 4) is further provided.and a control unit (47) which is configured to reset the electrical safety device (30) at the communication pin of the communication interface (46) in the triggered state of the safety device (30) as a function of an electrical reset parameter, in particular as a function of a voltage at the communication pin. The invention further relates to a method for operating an electrical safety device (30).;

Systems and methods are provided for maintaining the functionality of an electronic circuit breaker during a firmware update. The electronic circuit breaker includes at least two microcontrollers. When a first microcontroller of the at least two microcontrollers is updated, a second microcontroller of the at least two microcontrollers remain active and continues to run a safety algorithm allowing the electronic circuit breaker to continuously monitors its load without any disruptions.

The invention relates to a circuit breaker (12) comprising a busbar (36) to which a fixed contact (42) is connected, and a contact bridge (46) movably mounted thereon, to which a moving contact (48) is connected. The circuit breaker (12) further comprises an electric actuator (84) by means of which the contact bridge (46) is driven, a yoke (124) placed around the busbar (36), and a movably mounted slide (102) to which an armature (120) is connected. The circuit breaker (12) is designed such that when a first limit value is exceeded by an electric current carried via the busbar (36), the slide (102) is moved due to a magnetic interaction between the armature (120) and the yoke (124), so that a switching element (96) connected electrically in series with the electric actuator (84) is actuated by means of the slide (102).

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.

The invention relates to a circuit breaker device (SG) for interrupting an electrical low-voltage circuit when current limit values or current time limit values are exceeded, having a housing with terminals (Ne, Na, Le, La) for conductors of the low-voltage circuit, an interruption unit (UB) with contacts (KT) for interrupting the low-voltage circuit within the housing, a bimetal trigger (BM) connected to the interruption unit (UB), and a magnetic trigger (MR) connected to the interruption unit (UB). A resistance-based current measuring device (SH), for periodically ascertaining the level of the current in the low-voltage circuit, is provided and is connected to a measuring unit (ME) which is connected to a communication unit (COM) such that the current values ascertained by means of the resistance-based current measuring device (SH) are emitted in a wired or wireless manner.

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).

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.

In a switch arrangement with at least one electrical switch for overcurrent protection and with another switch, wherein both switches are positioned close to each other and wherein each switch has switching contacts to be opened, each of which is assigned a release mechanism, it is provided that both switches are linked to each other by a coupling element, that the coupling element has sections that trigger the release mechanisms of the switching contacts and that the triggering sections are offset from each other on the coupling element.

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.

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.

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 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.

Coupling element (20) for coupling the poles of a multi-pole protective switching device, wherein the coupling element (20) causes a time-delayed opening of the poles of the multi-pole protective switching device, and a reset device which enables a force-saving reset of the multi-pole protective switching device, wherein the reset device acts on the coupling element (20), and RCBO with a coupling element (20) and a reset device.

Method and system allowing more accurate detection and identification of unwanted arcing include novel processing of signal voltage representing recovered power-line current. In one implementation, arc-faults are detected based on numerical analysis where individual cycles of line voltage and current are observed and data collected during each cycle is processed to estimate likelihood of presence of arc-event within each individual cycle based on pre-defined number of arc-events occurring within pre-defined number of contiguous cycles. In another implementation, fast transient current spikes detection can be done by: computing difference values between consecutive line-current samples collected over a cycle, average of differences, and peak-to-peak value of line-current; comparing each difference value to average of difference; comparing each difference value to peak-to-peak value; and, based on calculation of composite of two comparisons, using thresholds to determine if arcing is present within processed cycle.

The present invention relates to the field of low-voltage electrical appliances, in particular to a 18mm width residual current-operated circuit breaker. In the projection perpendicular to the width direction of a circuit breaker housing, the circuit breaker housing comprises first-to-fifth areas disposed therein; the residual current-operated 18mm-width circuit breaker further comprises an operating mechanism and a leak electricity test mechanism disposed in the first area, a short-circuit instantaneous tripping mechanism, a L-pole contact system and a N-pole contact system disposed in the second area, an arc extinguishing system disposed in the third area, an overload tripping mechanism comprising a bimetallic strip disposed in the fourth area, and a zero-sequence current transformer and a magnetic flux trip disposed in the fifth area; the L-pole contact system and the N-pole contact system are arranged side by side along the width direction of the circuit breaker housing; the zero-sequence current transformer and the magnetic flux trip are arranged side by side along the length direction of the circuit breaker housing, and opposite the second area and the third area, respectively. The residual current-operated circuit breaker has reasonable internal arrangement and compact structure.