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WO/2020/065646A1 |
A protection circuit provides a control voltage to a 3 -phase contactor, where the three phases of the 3 -phase power supply are inputs to the 3 -phase contactor. The protection circuit includes: four input terminals, configured to be co...
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WO/2020/069384A1 |
A protection circuit is disclosed. The protection circuit includes a direct current (DC) blocking component electrically connected between a neutral of the transformer and a ground, and an overvoltage protection device electrically conne...
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WO/2020/061547A1 |
Various examples are provided related to direct current circuit breakers and their control methods. In one example, among others, a hybrid direct current circuit breaker (DCCB) includes an ultrafast mechanical switch (UFMS) connected in ...
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WO/2020/056908A1 |
Embodiments of the present application provide an overvoltage protection method, an overvoltage protection apparatus, and a display apparatus. When a voltage value of an output signal is greater than a first preset voltage threshold, whe...
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WO/2020/052222A1 |
A protection circuit for automatically adjusting an abnormal external signal and an LED driving power source. The protection circuit comprises an input end connected to an external signal circuit, a signal abnormality protection circuit ...
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WO/2020/053918A1 |
This overcurrent relay (30) is provided with: an overcurrent detection unit (100) that compares the effective value of input current input from a power system with a set value, thereby detecting overcurrent; a lowering detection unit (11...
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WO/2020/052663A1 |
Embodiments of the present application disclose a control and protection system for a mechanical high-voltage direct current circuit breaker, and a control method for the same. The system comprises: an electrical current acquisition and ...
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WO/2020/055997A1 |
A high voltage power supply apparatus includes: a comparator, a transformer, a rectifier, and a detector. The comparator is to control output of a basic voltage. A high voltage based on the basic voltage is used to perform an image formi...
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WO/2020/054751A1 |
[Problem] To simplify circuitry of a charging cable and a safety circuit. [Solution] A charging cable 50 according to the present invention is provided with: a leakage circuit breaker 15 that is connected to a power line 13 between a pow...
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WO/2020/055461A1 |
Distance protection of electric power delivery systems are disclosed herein where a fault within a zone of protection is detected using time-domain fault detection supervised by frequency-domain fault detection. The distance fault detect...
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WO/2020/048009A1 |
Disclosed are an overcurrent protection driving circuit and a display device. The overcurrent protection driving circuit comprises a power supply circuit, a current feedback circuit, a current detection circuit, a level output circuit an...
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WO/2020/044139A1 |
The invention provides a converter arrangement that couples an AC power system with a DC power system. The converter arrangement includes a converter, a filter and a control unit. The converter is capable of operating as an inverter and ...
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WO/2020/043544A1 |
The invention relates to controlling a high-voltage or medium-voltage switching device (10), by means of which an operating circuit is switched, for which purpose the high-voltage or medium-voltage switching device (10) comprises at leas...
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WO/2020/045842A1 |
The present invention relates to a fuse control system and method using defective mode detection, the system and method integrating an overcurrent prevention fuse with a signal fuse, for circuit protection, capable of performing function...
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WO/2020/042341A1 |
Disclosed are a correction method, a correction apparatus and a display apparatus. A current value of a current signal output by a chip (10) is detected, and a set overcurrent value of the chip (10) is corrected if the current value is l...
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WO/2020/042309A1 |
Embodiments of the present application provide a current limiting circuit, a current limiting device, and a display device. A first voltage signal is output by means of a current detection module according to a first current signal outpu...
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WO/2020/038119A1 |
Disclosed are a novel anti-lightning and over-voltage protection circuit and a protection apparatus. The protection circuit comprises a first piezo-resistor, a second piezo-resistor, a transient voltage suppressor diode, a positive tempe...
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WO/2020/038796A1 |
The present disclosure relates to an electronic valve apparatus for a high voltage direct current, HVDC, power transmission system. The electronic valve apparatus comprises a first device chain (301) including a plurality of first device...
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WO/2020/037385A1 |
The invention relates to a single-phase, equipotential, self-powered recloser with a load life of more than 20 years, for installing in 15KV medium-voltage networks, directly on Matthews-type fuse bases, using hooksticks, and without req...
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WO/2020/035296A1 |
In an AC/DC conversion arrangement, it is proposed that an input of an AC circuit breaker (1), which is formed as a hybrid circuit breaker (2) or as a semiconductor circuit breaker, forms an AC input (8) of the arrangement, wherein an ou...
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WO/2020/031369A1 |
[Solution] This device, which specifies a generation point of corona discharge in a power transmission and distribution line, includes: a sound detection device which detects a sound in an ultrasonic frequency band; and an image-capturin...
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WO/2020/026258A1 |
The present invention relates to a low voltage domestic board Fig-3 [12] integrated with multilevel protection system Fig-3 [1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 20, 25, 26] and multiple sources Fig-3 [A, B] to minimize electrica...
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WO/2020/025241A1 |
The invention relates to a circuit breaker device (14) for an electrical machine (12), in particular a single-phase or multi-phase electrical machine, having a power switching apparatus (16) and a monitoring system (18) for monitoring at...
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WO/2020/021656A1 |
A semiconductor circuit breaker and a circuit breaking device that suppress the generation of a surge voltage when a current is cut off using a semiconductor switch that is controlled to be conductive or non-conductive by a control signa...
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WO/2020/023589A1 |
A wiring device including an interrupting device, a fault detection device, and a controller. The interrupting device is configured to place the wiring device in a tripped condition in which the flow of power between one or more line ter...
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WO/2020/019778A1 |
Disclosed are a main distribution frame terminal block, a safety unit, and a main distribution frame. The main distribution frame terminal block comprises at least one port, wherein at least one of the ports is provided with an anti-cros...
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WO/2020/023579A1 |
A circuit interrupter including a line conductor, a neutral conductor, a printed-circuit board coil, and a test circuit. The printed-circuit board coil has an aperture configured to receive the line conductor. The test circuit is electri...
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WO/2020/015820A1 |
The invention relates to a method for generating an activating signal (A) for a direct current circuit breaker (22), which is arranged between a high-voltage direct current source (11) and a high-voltage direct current transmission line ...
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WO/2020/016277A1 |
The invention relates to a device (EMU) for emulating a bimetallic strip, the emulating device (EMU) comprising a current sensor (CC) able to measure a line current (I P ) flowing through the emulating device (EMU), the emulating device ...
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WO/2020/014161A1 |
Power interruption device and/or method switches, controls, or otherwise interrupts one or more electrical signal, such as AC power or other electrical signal, applied to one or more load preferably via semiconductor or other solid state...
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WO/2020/011329A1 |
The invention relates to a drive circuit (10) for driving an electronically commutated motor (12), having a rectifier (18) with an AC terminal (20) which can be connected to a supply grid (22), an inverter (16) with a motor phase termina...
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WO/2019/149755A9 |
The application relates to a fault detection apparatus (108, 208) of a local substation (100, 200) for detecting a grid fault in at least one low-voltage grid (102, 202) connected to the local substation, comprising at least one recordin...
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WO/2020/011720A1 |
The present invention relates to a method for controlling a DC-to-DC voltage converter in order to drive the current of at least one fuel injector of a motor vehicle thermal combustion engine. The method comprises the steps of, when the ...
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WO/2020/011039A1 |
Disclosed in the present invention is a novel lightning protection overvoltage protection device, comprising a first varistor, a second varistor, a positive temperature coefficient thermistor, and lead-out terminals. The first varistor i...
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WO/2020/007974A1 |
The invention relates to a method for controlling a grid-forming converter, the converier comprising semiconductor switches and a control unit which controls the semiconductor switches. The invention further relates to a computer program...
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WO/2020/008462A1 |
Systems and methods are provided for detecting and compensating for loss of a phase of a three-phase power source, elements of the system including: a sensing unit, which measures current and voltage levels of each phase of the three-pha...
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WO/2020/008019A1 |
The invention relates to appliance circuit breakers having intelligent limit-value determination. In a training phase, the appliance circuit breaker is adjusted for a certain appliance and for the load behavior thereof. In a subsequent m...
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WO/2020/002227A1 |
The invention relates to a secondary-side circuit device comprising a secondary coil (L2) for transmitting and/or receiving magnetic energy of a magnetic field (106) and for converting the magnetic energy into electrical energy, an energ...
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WO/2020/002669A1 |
The present invention concerns a method for protecting a network capable of being isolated from a main network, said network comprising: - a device for producing static electricity supplying the network; - a start protection suitable for...
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WO/2019/244467A1 |
This electronic circuit breaker is provided with: a current transformer 3 for detecting current flowing through an AC electric path 1; a rectifier circuit 4 connected to the secondary side of the current transformer 3 and rectifying the ...
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WO/2019/243470A1 |
There is provided a digital circuit breaker controller (400) for controlling a circuit breaker. The digital circuit breaker controller (400) comprises programming logic configured to handle interlocking functions, configurations, signall...
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WO/2019/245724A1 |
A solid-state circuit breaker and method of use. The circuit breaker includes current and voltage sensors, a power converter, and a digital signal processor. The digital signal processor operates the power converter between three operati...
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WO/2019/244034A1 |
The present invention relates to devices which can be installed in interchangeable bases and which interrupt and subsequently automatically reconnect medium-voltage circuits. The device disclosed herein detects whether there is a fault i...
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WO/2019/243381A1 |
The aim of the invention is to increase the safety from electrical shock of a person (8) working on an electrical installation (10) having at least two different electric circuits (51a, 51b). For this purpose a safety module (22) is prov...
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WO/2019/244292A1 |
This electronic circuit breaker is provided with: a current transformer 3 for detecting current flowing through an AC electric path 1; a rectifier circuit 4 connected to the secondary side of the current transformer 3 and rectifying the ...
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WO/2019/238370A1 |
The invention relates to a protective device (100) for overcurrent- and overvoltage-protected energy transmission from a bipolar voltage terminal (101) to an electrical load (103), said device comprising: a first fuse circuit (105) which...
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WO/2019/238369A1 |
The disclosure relates to a protection device (100) for transferring energy from a two-pole voltage terminal (101) to an electrical load (103). A first fuse circuit (105) is designed to interrupt the flow of a line current from the volta...
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WO/2019/238161A1 |
The invention relates to a device for identifying a fault current in a vehicle actuator comprising a control unit, preferably a clutch or transmission actuator, said device comprising a sensor device (19, 21, 26) for measuring a current ...
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WO/2019/237221A1 |
A solid circuit breaker and a breaking method for a solid circuit breaker, the solid circuit breaker comprising: a semiconductor switch; a control unit (10) connected to the semiconductor switch; and an energy absorber (A), which is conn...
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WO/2019/234927A1 |
This electronic circuit breaker 400 is provided with: an open/close contact 2 for opening and closing an electrical path 1; a current detection device 3 for detecting the current of the electrical path 1; a setting unit 5 for setting an ...
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