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JP2020167089A |
To provide a circuit breaker capable of improving the facility of positioning the resistor while reducing the size.A circuit breaker 1 includes a resistor R1, a holding structure H1, and a body 5. The holding structure H1 has a block-lik...
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JP6759441B2 |
A circuit breaker includes contacts movable between a closed position wherein a line terminal and a load terminal are in electrical communication, and an open position wherein the line and the load terminals are electrically isolated. A ...
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JP6732606B2 |
To provide a DC power supply polarity inversion device capable of preventing a secondary-side circuit from being damaged even when a DC power supply device is connected in reverse polarity.A DC power supply polarity inversion device incl...
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JP6725104B2 |
One embodiment provides an electric leakage detecting device for shutting off an AC electric circuit. A digital comparator generates a detection signal by comparing an output signal corresponding to output signals of a zero-phase current...
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JP2020092541A |
To provide a seismoscopic relay device capable of being installed without interrupting a primary side of an earth leakage breaker.The seismoscopic relay device includes: a seismoscopic sensor 14 for detecting an earthquake; a pseudo leak...
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JP6708463B2 |
The present invention increases noise immunity of an electrical leakage detection circuit. A first comparator COMP1 generates a first comparison signal indicating a comparison result between a voltage corresponding to a detected signal f...
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JP2020080235A |
To attain simplification of configuration.A circuit breaker 20 comprises a zero-phase-sequence current transformer ZCT1, a removal part, and a drive part 5. The zero-phase-sequence current transformer ZCT1 outputs an operation signal S1 ...
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JP6698471B2 |
To reduce the installation work cost of a distributed power source.A construction method of a power system according to an embodiment of the present invention utilizes a 100-V single-phase two-wire distributed power source 14. In this me...
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JP6701967B2 |
To provide a protective cover of circuit breaker which allows for erroneous operation regulation of an operation handle in safety.A protective cover 16 for protecting the lever 13 of a circuit breaker 1 includes protective cover bodies 1...
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JP2020072585A |
To provide a downsized circuit breaker drive system.A circuit breaker drive system 100 is a circuit breaker drive system that is disposed outside of a circuit breaker 20 having a leakage protection function to drive the circuit breaker 2...
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JP6681938B2 |
To provide a low-pressure power three-phase breaker with a built-in phase detection function such that the confirmation of the phase arrangement of the three-phase three-wire power line can be performed easily and safely.A housing 10 of ...
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JP6658360B2 |
To provide a ground-fault circuit breaker which is downsized while securing a suction force of a ground-fault removal device for removing a trip bar.A ground-fault circuit breaker comprises: a base 11; power source side terminals 20 whic...
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JP6658969B2 |
An electronic circuit breaker includes: a make and break contact 2 that makes and breaks a conducting path 1; a current sensor 3 that detects a current through the conducing path 1; a first microcomputer 10 that receives an output signal...
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JP6656087B2 |
To provide a protective relay capable of maintaining operation display without applying any special electromagnetic noise countermeasures to the protective relay which does not require power for maintaining operation display and comprise...
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JP6650874B2 |
A system for diagnosing circuit protection device field issues includes a remote computer system (58) and a diagnostic circuit protection device (2) installed at a customer location, wherein the circuit protection device includes a proce...
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JP2020013688A |
To provide an earth leakage breaker that increases the possibility of detecting an electric leakage, and a charging cable having the earth leakage breaker.An AC current path 12 passes through a zero-phase current transformer 15. A detect...
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JP6631868B2 |
To provide an electric leakage detection circuit that can prevent malfunction caused by electromagnetic wave noise.A zero-phase current transformer 21 through which a main electrical path ML (main trunk lines L1D, ND, L2D) is inserted is...
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JP6629292B2 |
A protective device is provided comprising a microswitch which is serially connected to a fuse or a circuit breaker, a current measuring unit, a storage unit, and a control unit. At least one current value range is stored on the storage ...
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JP6623097B2 |
To provide a portable earth leakage operation tester capable of reducing the time and labor required by an operator for inputting operating current information during a test, improving accuracy of input data, and obtaining lower-limit va...
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JP6613752B2 |
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JP6610191B2 |
To provide a current detection device capable of detecting a wide range of currents from a minute current to a large current, and an earth leakage circuit breaker using the same.The current detection device comprises: a first current det...
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JP6610173B2 |
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JP6605058B2 |
To provide an insertion type connection unit having a function for making a circuit breaker operate even if a normally-operable wiring state is not secured, in a receptacle to which the insertion type connection unit is connected.An inse...
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JP6605905B2 |
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JP2019170106A |
To provide a wiring structure capable of stopping energization by detecting a fault with an earth leakage breaker before a fire breaks out if a sheathing of a power cable is broken and a distribution board using the same.The wiring struc...
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JP6586505B1 |
To provide an electronically programmable AC circuit breaker having a protection configuration for inoperating a breaker when a failure occurs in an electronic monitoring circuit. In a circuit breaker, a trip coil (32) is connected to a ...
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JP2019160678A |
To provide a circuit breaker with improved operational reliability during an on/off operations, which checks whether an on/off operation is being performed with a circuit breaker by counting the state signals generated during the on/off ...
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JP6573571B2 |
To provide a leakage relay or the like capable of preventing a malfunction of the leakage relay in more simplified configuration and more reliably compared to the prior arts.A leakage relay issues a warning by determining the presence/ab...
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JP6569489B2 |
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JP6566261B2 |
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JP2019135683A |
To provide a circuit breaker than can be downsized.A circuit breaker 100 comprises: a stator 10 in which a stationary contact is provided; a movable element 20 in which a movable contact is provided; and a movable element case body 31 ho...
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JP6532956B2 |
A power distribution system for connection to an AC voltage network, having a UPS power supply unit for uninterruptible power supply with a network-side input and with at least one output to which a number of loads are connected or can b...
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JP2019067704A |
To provide a built-in type outlet device that shuts down an electric path when a house tilts even in a case in which the seismic intensity does not reach seismic intensity set for shut-off operation.A built-in type outlet device includes...
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JP6477170B2 |
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JP2019013118A |
To provide a vehicular control device capable of heightening detection accuracy of a ground fault; and to provide a ground fault detection method.A vehicular control device 1 has a detector 16, a voltage adjustment section 17 and a contr...
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JP6456154B2 |
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JP6440108B2 |
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JP6425061B2 |
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JP6423115B2 |
An arc generation detector and a switch, the arc generation detector being capable of detecting arc generation at an electrical connection portion such as a terminal belonging to a power supply line and having a relatively simple configu...
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JP6402918B2 |
To provide a leak current detecting circuit of an improved leak circuit breaker which is arranged so that electric power economization and the reduction in power consumption can be achieved by reducing an amount of power consumed by the ...
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JP6403404B2 |
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JP6399442B2 |
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JP6400358B2 |
A detection device that detects resetting of an electric circuit breaker. The electric circuit breaker comprises fixed and moving contacts, the moving contact being movable between an open position and a closed position, a mechanism for ...
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JP6392928B2 |
The present invention provides a trip control circuit for a circuit breaker capable of breaking a circuit when a fault current occurs due to a DC current component, as well as an AC current. The trip control circuit comprises a current t...
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JP6385291B2 |
To provide a highly reliable protective relay device in which disconnection of a fuse for VT is never detected erroneously, even when a special fault of power system, such as step-out, occurs.In a protective relay device, a first relay e...
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JP6369775B2 |
An electrical leakage detector (1) is provided with a zero phase current transformer (11) through which an AC system passes, a calculation unit (12) for calculating a calculated value using the output current from the zero phase current ...
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JP6367218B2 |
An interface for cutting off the power supply for any fault current Id≦300 milliamperes such that: Id≧IPE+k·Ih where IPE represents the current returning to the power source via the protective conductor connecting the exposed conduc...
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JP6362832B2 |
A contactor unit includes an input lead 12 connectable to a first lead of an energy output device 20, an output lead 14 connectable to a first lead of a voltage bus, a contactor 100 that connects and disconnects the input lead 12 from th...
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JP6355217B2 |
A circuit breaker (such as a miniature circuit breaker) that wirelessly communicates state and fault information to a main energy monitoring module. The wireless circuit breaker includes a transceiver and a power supply that harvests ene...
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JP6351312B2 |
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