Schneider Electric (China) Co., Ltd.

Embodiments of the disclosure provides a reset module for a handle mechanism, a handle mechanism and a switching device. The reset module comprises: a rotary table fixedly coupled to a rotary handle of the handle mechanism and adapted to rotate with the rotary handle about a rotary axis at least between a closed position and an open position; a first driving block arranged at a circumferential edge of the rotary table and adapted to contact a joystick of a circuit breaker during rotation of the rotary table from the closed position to the open position; and an elastic member coupled to the rotary table and adapted to provide an elastic force between the first driving block and the joystick such that the rotary table is held in the closed position. In this way, the rotary handle can accurately indicate the current state of the switching device.

The disclosure relates to a power distribution protection system and a method thereof. The system includes: a main input unit configured to receive an alternating current power input; a electronic switch; a isolating switch; a main output unit configured to output alternating current power; a main-circuit automatic detection unit configured to detect a parameter of output from the electronic switch in a disconnection state of the isolating switch; a main control unit configured to determine whether a state of the electronic switch is normal based on electrical parameter information detected by the main-circuit automatic detection unit; the main input unit, the electronic switch, the isolating switch and the main output unit are connected in series. When the state of the electronic switch is normal, the isolating switch is closed, and then the electronic switch is turned on. When the state of the electronic switch is abnormal, the isolating switch remains disconnected.

A break mechanism for a switching apparatus is described that includes a contact driving assembly including a driving part and coupled to a moving contact to drive the moving contact to move between an open and a closed position; a handle assembly adapted to rotate around a pivot shaft and including a relevant driving part and a telescopic driving part keeping a length unchanged during a rotation of the handle assembly in a first rotation direction to drive the contact driving assembly to rotate in a second rotation direction, thereby driving the moving contact to move to the closed position; and an auxiliary assembly coupled to the relevant driving part, and adapted to move to a second position in a first movement direction during tripping of the switching apparatus, thereby causing the handle assembly to rotate in the second rotation direction.

Embodiments of the present disclosure provide a HEMT device and a method of fabricating the same. The HEMT device includes: a substrate; a buffer layer disposed on the substrate; a channel layer disposed on the buffer layer; a barrier layer disposed on the channel layer; a first electrode and a second electrode coupled to opposite sides of the barrier layer; a first gate disposed on the barrier layer adjacent to the first electrode and surrounded by the passivation layer, and a second gate disposed on the barrier layer adjacent to the second electrode and surrounded by the passivation layer; and one or more floating field plates disposed between the first gate and the second gate and spaced apart from the barrier layer, the one or more floating field plates being surrounded by the passivation layer.

Embodiments of the present disclosure provide a press type mechanical switching mechanism and a circuit breaker. The switching mechanism comprising: a first and a second mechanical contact capable of switching between an on state and an off state; a first pressing member configured to switch the first and second mechanical contacts from the off state to the on state in a case that the first and second mechanical contacts are in the off state and the first pressing member is pressed down; a second pressing member configured to switch the first and second mechanical contacts from the on state to the off state in a case that the first and second mechanical contacts are in the on state and the second pressing member is pressed down; an electromagnetic assembly configured to switch the first and second mechanical contacts from the on state to the off state in a case that the first and second mechanical contacts are in the on state and the first pressing member is not pressed down and in a case that the first and second mechanical contacts are in the on state and the first pressing member is kept pressed down.

Embodiments of the disclosure provide a solid state circuit breaker, including: a first input end and a second input end for receiving a power input; a first output end and a second output end for providing a power supply output; a first On-Off unit including a first switching device and a second switching device connected in series between the first input end and the first output end; a capacitor, a first end of the capacitor being connected to a node between the first switching device and the second switching device and a second end of the capacitor being connected to a node between the second input end and the second output end; and a bidirectional transient voltage suppression diode connected in parallel with the capacitor.

A reverse wiring self-protection circuit is disclosed, including an auxiliary power module configured to provide tripping electric energy for tripping the solid-state circuit breaker to a tripping coil of the solid-state circuit breaker before an isolating switch of the solid-state circuit breaker is closed; a reverse wiring determination module configured to determine whether DC power connected to the solid-state circuit breaker is reversely wired, and output a first driving enable signal enabling a driving circuit module in response to reverse wiring of the DC power; the driving circuit module is configured to, transmit a driving signal indicating tripping operation to the tripping coil, in response to the first driving enable signal. The reverse wiring self-protection circuit according to the present disclosure can protect the elements included in the solid-state circuit breaker itself and improve the personal safety of the DC system to which the solid-state circuit breaker is connected.

A power distribution device is disclosed. The power distribution device includes: a first power source input end for connecting a first power source; a second power source input end for connecting a second power source; a first power source switch for connecting a first power source input end with a bus and switching on and off the power supply of the first power source; a second power source switch for connecting a second power source input end with a bus and switching on and off the power supply of the second power source; the bus for connecting with a load device and supplying power for the load device; and a load device switch for switching on and off the power supply to a relevant load device. Furthermore, A power distribution system is also disclosed.

A leakage current detection circuit and a leakage current protection circuit are disclosed. The leakage current detection circuit includes a mutual inductance module, an excitation module, a signal processing module, a feedback self-check module and a calculation module. The mutual inductance module includes a magnetic core, a first winding and a second winding. The excitation module is configured for producing an excitation current in the first winding. The signal processing module is configured for processing the output voltage signal of the first winding and outputting a processed signal, and the voltage signal corresponding to the excitation current is filtered out of the processed signal. The feedback self-check module includes a feedback circuit and a self-check circuit. The calculation module is configured for analyzing the leakage current according to the processed signals and outputting the self-check signal in the self-check mode.

The present disclosure discloses a solid-state circuit breaker, a mechanical breakpoint of the solid-state circuit breaker adopts a modular layout, which includes: a housing module; a breaking unit module including a stationary contact and a movable contact; a mechanism module configured to drive an action of the breaking unit module; and a transmission module, configured to connect the mechanism module and the breaking unit module, wherein the housing module, the mechanism module, the breaking unit module and the transmission module are independent from each other and are able to be installed and disassembled from each other. The solid-state circuit breaker according to the present disclosure is modularized, the installation process is simple, the switching of different application requirements is facilitated, and the maintenance and replacement of internal components are more convenient.