Abstract: Disclosed embodiments include a miniature circuit breaker that adopts a double breaking point design, which can increase the arc voltage, and has excellent current limiting capability and high short-circuit breaking performance. Some embodiments include a clapper-type electromagnet to realize magnetic tripping, which can not only drive the movable iron core to trigger the tripping of the miniature circuit breaker through the clapper magnetic circuit to cut off the short-circuit current, making the protection of the miniature circuit breaker more reliable, but also drive the electric arc generated when the moving and stationary contacts are separated to move rapidly toward the arc extinguishing chamber through the arc-blowing magnetic circuit, improving the breaking capacity of the miniature circuit breaker.

Abstract: A method for processing a current transformer signal is provided, the method including: obtaining a current transformer signal with a cycle; in each cycle of the current transformer signal, for each time point, calculating a ratio between an amplitude of the current transformer signal at the time point and an amplitude of the current transformer signal at the previous time point; determining, in each cycle of the current transformer signal, that a tailing exists in the current transformer signal based on the ratio being equal to a tailing threshold and lasting for a threshold time; and in each cycle of the current transformer signal, removing the tailing.

Abstract: An integrated power distribution apparatus includes a rack including a receiving cavity formed in the rack and adapted to extend from an operation side of the rack toward a wiring side of the rack and a plurality of functional modules arranged in the receiving cavity and coupled to the rack. The plurality of functional modules are arranged in an arrangement direction. A busbar is arranged on the wiring side of the rack and coupled to and electrically connected to the plurality of functional modules. A communication bar is arranged on the wiring side of the rack and coupled to the plurality of functional modules.

Abstract: The present disclosure provides a solid state breaker and a power supply system. The breaker includes: a first port and a second port configured to connect a first external system; a third port and a fourth port configured to connect a second external system; a first electronic switch connected between the first port and the third port; a second electronic switch connected between the second port and the fourth port; and a control unit configured to control the first electronic switch and the second electronic switch to be turned off in a case of detecting an electricity leakage occurs in the second external system. The breaker is provided with electronic switches at both poles, so that it can provide effective protection for the human body by quickly turning off the electronic switches provided at both poles, in a case of an electricity leakage of the prosumer to the ground.

Abstract: A miniature circuit breaker includes a tripping mechanism, a magnetic trip assembly, and an electronic trip unit. The tripping mechanism includes a moving contact support, a moving contact, and a first and second actuation input parts which are adapted to drive the moving contact support to move to drive the moving contact. The magnetic trip assembly includes a coil and an actuation part. when a main circuit current is greater than a first predetermined short-circuit current threshold, the actuation part acts to apply an external force to the first actuation input part. The electronic trip unit includes a current sensor, a controller, and an action actuator. The controller is configured to control the action actuator to apply the external force to the second actuation input part in response to the main circuit current being greater than a predetermined overload current threshold and less than a second predetermined short-circuit current threshold.

Abstract: A pre-charging circuit is disclosed, including: a first switching device connected between a power supply and a load, configured to turn on and off the power supply and the load to control power supplying and pre-charging of the load by the power supply; and a pre-charging device connected to the first switching device, configured to, in a pre-charging mode: obtain a magnitude of a pre-charging current for the load, compare the magnitude of the pre-charging current with a first current threshold and a second current threshold, wherein the first current threshold is less than the second current threshold, and control the first switching device to be turned on or turned off based on a comparison result.

Abstract: Embodiments of the disclosure provide a circuit breaker. Each of a first switch module and a second switch module of the circuit breaker includes a driving component, a plurality of connecting members coupled to the driving component, and a plurality of first contacts and a plurality of second contacts disposed corresponding to the plurality of connecting members. A circuit board assembly is electrically connected to the driving component of the first switch module and the driving component of the second switch module. A test button assembly is disposed on the circuit board assembly.

Abstract: The disclosure relates to a solid-state circuit breaker with negative temperature coefficient NTC temperature data acquisition, wherein the solid-state circuit breaker includes: a plurality of first NTC temperature data acquisition circuits, each connected with an input end and an output end of power supply terminals and configured to acquire a first resistance value indicating temperature data of the power supply terminals; a plurality of second NTC temperature data acquisition circuits, each connected to both ends of a switch and configured to acquire a second resistance value indicating temperature data of the switch; a voltage follower, configured to output a voltage value corresponding to the second resistance value; a voltage/frequency V/F conversion circuit, configured to output an amplitude-frequency converted voltage value; an isolator, configured to output a digitally isolated voltage value; and a microcontroller MCU, connected to the first NTC temperature data acquisition circuit and the isolator.

Abstract: The present disclosure provides a solid state breaker and a power supply system. The breaker includes: a first port and a second port configured to connect a first external system; a third port and a fourth port configured to connect a second external system; a first electronic switch connected between the first port and the third port; a second electronic switch connected between the second port and the fourth port; and a control unit configured to control the first electronic switch and the second electronic switch to be turned off in a case of detecting an electricity leakage occurs in the second external system. The breaker is provided with electronic switches at both poles, so that it can provide effective protection for the human body by quickly turning off the electronic switches provided at both poles, in a case of an electricity leakage of the prosumer to the ground.

Abstract: The present disclosure provides an electrical device, including: a first sub-mechanism, capable of switching between an electrically conductive state and an electrically isolated state; a second sub-mechanism, capable of switching between an electrically conductive state and an electrically isolated state; when one of the first sub-mechanism and the second sub-mechanism is electrically isolated, the other of the first sub-mechanism and the second sub-mechanism is electrically conductive.

Abstract: A protection device against overvoltages includes a housing and an electrical module arranged in an internal volume of the housing. The electrical module includes a phase terminal, adjacent to one end of the housing, a location, adjacent to an opposite end of the housing, and a fuse and a varistor, connected in series to the phase terminal and distributed along a length axis so that the fuse is arranged between the phase terminal and the varistor and the varistor is arranged between the fuse and the location. The electrical module further includes a gas spark gap and a ground terminal, which are connected in series with the varistor and arranged in the location.

Abstract: A power distribution terminal provided with a display module, a wireless power distribution display system and a wireless power distribution display method are disclosed. The wireless power distribution display system includes a local gateway, and at least two power distribution terminals which are communicated with the local gateway in a short-distance wireless communication mode and send their terminal identification data to the local gateway; at least one of the at least two power distribution terminals is provided with a display module; the local gateway outputs the terminal identification data in a short-distance wireless communication mode; and the at least one power distribution terminal provided with a display module receives the terminal identification data of other distribution terminals from the local gateway in a short-distance wireless communication mode, and displays the terminal identification data.

Abstract: A magnetic connector for connecting an electrical unit to an electrical consumer unit includes at least one magnet, a conductive metal part secured to this magnet, a connecting cable fixed to the conductive metal part, and a cap made of plastic material overmoulded on the connecting cable, the conductive metal part and the magnet, except for a contact surface of the magnet intended to make contact with a metal part of the electrical consumer unit.

Abstract: A power distribution terminal provided with a display module, a wireless power distribution display system and a wireless power distribution display method are disclosed. The wireless power distribution display system includes a local gateway, and at least two power distribution terminals which are communicated with the local gateway in a short-distance wireless communication mode and send their terminal identification data to the local gateway; at least one of the at least two power distribution terminals is provided with a display module; the local gateway outputs the terminal identification data in a short-distance wireless communication mode; and the at least one power distribution terminal provided with a display module receives the terminal identification data of other distribution terminals from the local gateway in a short-distance wireless communication mode, and displays the terminal identification data.

Abstract: A module for detecting an electrical fault includes a housing; a first conductor and a second conductor; a first measurement toroid, positioned around the first conductor and around the second conductor, for measuring a differential current flowing between the first and second conductors; a second measurement toroid, positioned around the first conductor, for detecting an electric arc signal flowing through this conductor; a relay; an electronic processing circuit configured to switch the relay according to the current measured by the measurement toroids. The measurement toroids are aligned with one another and the first toroid takes the shape of an elongated tube and allows the differential protection to operate with its own current.

Abstract: A magnetic connector for connecting an electrical unit to an electrical consumer unit includes at least one magnet, a conductive metal part secured to this magnet, a connecting cable fixed to the conductive metal part, and a cap made of plastic material overmoulded on the connecting cable, the conductive metal part and the magnet, except for a contact surface of the magnet intended to make contact with a metal part of the electrical consumer unit.

Abstract: A method that tests a differential protection device having a first and a second differential protection chain includes: a step of controlling the flow of a test signal for a duration smaller than a no-trip time, and steps of determining the state of the two differential protection chains after the flow of a test signal, of monitoring the conformity of the evolution of the protection chains, and of determining the state of the test. The differential protection device includes two differential protection chains and controls the flow of a test current for a duration smaller than a no-trip time. It includes modules for monitoring the evolution of the protection chains and determining the state of the test in order to control the opening of an electrical unit if the test is good. The device can be included in the electrical unit.

Abstract: A method that tests a differential protection device having a first and a second differential protection chain includes: a step of controlling the flow of a test signal for a duration smaller than a no-trip time, and steps of determining the state of the two differential protection chains after the flow of a test signal, of monitoring the conformity of the evolution of the protection chains, and of determining the state of the test. The differential protection device includes two differential protection chains and controls the flow of a test current for a duration smaller than a no-trip time. It includes modules for monitoring the evolution of the protection chains and determining the state of the test in order to control the opening of an electrical unit if the test is good. The device can be included in the electrical unit.

Abstract: A module for detecting an electrical fault includes a housing; a first conductor and a second conductor; a first measurement toroid, positioned around the first conductor and around the second conductor, for measuring a differential current flowing between the first and second conductors; a second measurement toroid, positioned around the first conductor, for detecting an electric arc signal flowing through this conductor; a relay; an electronic processing circuit configured to switch the relay according to the current measured by the measurement toroids. The measurement toroids are aligned with one another and the first toroid takes the shape of an elongated tube and allows the differential protection to operate with its own current.

Abstract: In this method, the voltage outage load-side is an opening of the circuit breaker, and the circuit breaker is able to interrupt the flow of electric current in an electric connection including an electric conductor. The auxiliary unit comprises a current sensor for measuring the intensity of the current flowing in the electric conductor and a first detection means for detecting the voltage outage load-side from the circuit breaker. The method comprises the following steps: measuring the intensity of the current flowing in the electric conductor, detecting the voltage outage load-side from the electric circuit breaker, determining a cause of the detected voltage outage load-side from the circuit breaker, said cause being selected from the group consisting in: an electric overload, a short-circuit and a voltage drop.