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JP4852381B2 |
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JP4852380B2 |
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JP2012005193A |
To provide a leakage cutoff unit and a leakage detector capable of detecting leak current resulting from ground resistance by easy and inexpensive configuration, and maintaining an operation sensitivity actual value between rating sensit...
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JP4846149B2 |
A dual-rated current transformer circuit has a first circuit which delivers a first current and a second circuit which delivers a second current. A current transformer is coupled to both the first and second circuits, wherein the transfo...
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JP4845910B2 |
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JP4839772B2 |
The switch (11) has a pair of fixed electrodes (14), for each terminal, placed, in the form of a cassette, in a lower region of a switch case (13) and maintained on a cartridge type fixed electrode holding element (15). Bridge type mobil...
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JP2011253744A |
To provide a circuit breaker which can detect poor contact of a power supply side terminal and a load side terminal with one sensor circuit.A feeder line 7 and a detection line 8 are wired in parallel between a power supply side terminal...
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JP2011250486A |
To reduce the quantity of magnetic shield disposition for the core of a zero-phase sequence current transformer having circular form or non-circular form and restrict the number of components as a whole.An earth leakage breaker comprises...
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JP2011243773A |
To provide a zero-phase-sequence current transformer which can improve the screening effect of a shield member and reduce unnecessary output.A zero-phase-sequence current transformer comprises: a core 11 made up of annular magnetic mater...
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JP4816246B2 |
The circuit-breaker has a megohmmeter testing switch (18) installed in an enveloped case. The switch has an assembling unit including an actuator (21) with an end connected to an actuating rod of a switch body (20) and another end contac...
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JP2011228095A |
To provide an electronic breaker with an electrical leak detection function capable of detecting electrical leak without the necessity of providing a separate space for the detection and without considerably changing the constitution of ...
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JP4811231B2 |
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JP4812012B2 |
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JP2011222210A |
To provide a breaker capable of reporting an erroneous operation if an opening/closing mechanism part is transitioned to an open state when a protective shutdown detection circuit fails to report an alarm signal, and not reporting an err...
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JP4799371B2 |
Astatemonitoring device for a circuit breaker is provided. When a movable contact is opened by electromagnetic repulsive force, in other words, when passed current attains a level at which the circuit breaker is allowed to carry out trip...
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JP4789661B2 |
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JP2011192607A |
To provide an electronic circuit breaker capable of detecting occurrence of a leakage without using a zero-phase current transformer and suppressing large-sizing of a circuit breaker case or the like.Each of current transformers 10 is pr...
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JP4774326B2 |
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JP4769275B2 |
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JP2011171244A |
To provide a circuit breaker including a cord short circuit detection circuit for detecting only cord short circuit.The circuit breaker includes: sensor wiring 9 detecting one circuit voltage of an outlet 4; a peak value detection circui...
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JP4763759B2 |
Disclosed is a frame for a circuit breaker, including: a plurality of unit frames having a plurality of inner spaces, and a connection unit coupled between two adjacent unit frames among the unit frames and connecting the two unit frames...
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JP4760428B2 |
The breaker has a filter-and booster assembly (10) provided between a secondary winding of a summation-current transformer (3) and an error current collecting circuit (4). The assembly has an active filter circuit with an operational amp...
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JP4742232B2 |
The circuit-breaker has a supply circuit (5) supplied with electrical power by all the phases of polyphase alternating current electrical paths (1). A test circuit (7) is constituted of an oscillating circuit (7c) that utilizes the circu...
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JP2011150845A |
To provide an accessory device of a breaker for wiring which allows easy and reliable internal connection without soldering operation in the connection of a terminal to a printed wiring board.The accessory device 100 of the breaker for w...
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JP4740232B2 |
A protection device for circuit-breakers that comprises a wireless communication system for transmitting locally, to a dedicated computerized device, information corresponding to measurements of electrical quantities, to the setting of t...
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JP4736949B2 |
To improve a wiring structure to minimize depth occupied by an assembly of terminal conductors while the components of the terminal conductors are used in common for three poles and four poles, in relation to load-side main circuit termi...
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JP4716809B2 |
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JP4715537B2 |
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JP4696665B2 |
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JP2011108455A |
To provide an electronic breaker having a function which monitors capacity changes of a smoothing capacitor incorporated in a power supply circuit without making an On-Off operation of power supply and detects them when the capacity is r...
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JP4683809B2 |
A current measuring device (15) for a multi-pole low voltage circuit breaker (1). comprises a support body (20) with a through opening for a current conductor (4) for each of the poles and a receiving chamber (22), surrounding the throug...
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JP4683950B2 |
A switching device is provided that includes a switching mechanism unit and a switch drive control circuit. In the switching device, an operating member is maintained in an ON position by the sucking force of a permanent magnet and a yok...
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JP4647821B2 |
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JP4641197B2 |
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JP2011034714A |
To provide a circuit breaker of good assemblability with reduced number of assembling steps and components, for a lower cost, capable of preventing degradation in insulation between phases caused by sticking of arc gas after cutting off....
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JP4631593B2 |
A circuit breaker includes a main case containing a contactor section, an arc-extinguishing device and an overcurrent tripping device; a middle cover laid on the main case, the middle cover having in a central section thereof a recess pa...
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JP2011027589A |
To provide a small-sized power measuring device measuring power highly accurately, and also to provide a breaker using the device.This power measuring device includes main circuit measuring parts 701, 702 for measuring a current and a vo...
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JP4628636B2 |
Data memories are used to represent the characteristic values of the properties of the circuit-breaker and the associated current transformer. A cable harness uses a writeable electronic memory module which is inserted into one of the in...
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JP4625518B2 |
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JP4623560B2 |
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JP4623562B2 |
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JP2011018460A |
To share a component between a voltage trip device and an undervoltage trip device.A trip bar 2 of a switching mechanism 300 in an air circuit breaker 100 is provided with a trip bar cut groove 2a and a trip bar extension 2b, wherein, in...
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JP2011018518A |
To provide a circuit breaker capable of preventing insulation breakdown for secondary winding of a transformer and connector components, and capable of easily showing its connection condition, even though an open state is happened among ...
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JP4620240B2 |
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JP4619101B2 |
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JP2011015583A |
To provide a leakage detection method, a leakage detection device and an earth leakage breaker by which noise resistance performance thereof is improved and only a resistive component of a leakage current is accurately detected.A leakage...
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JP4615571B2 |
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JP4604862B2 |
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JP4606952B2 |
The device has a protection module (20) with a mechanical actuator (32) having a mechanical control connection (33) set in a trip state representing a defect of a varistor and a sparker when a thermal pin (30) and a fuse (31) cause an el...
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JP4600303B2 |
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