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JP2008305680 |
To provide an electromagnet device of a circuit breaker preventing a beat by notifying a use at a current near a rated current value generating a beat by an alarm.The electromagnet device 1 of the circuit breaker is equipped with an almo...
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JP2008305764 |
To provide a connection failure detecting circuit capable of detecting a connection failure of an electric wire in an initial stage.The connection failure detecting circuit is equipped with a pair of voltage sensors 6a, 6b detecting wave...
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JP2008305595 |
To provide a circuit breaker which can prevent an unnecessary operation and can comprehend visually a ground fault current occurring at present by operating with the ground current flowing in the ground due to insulation failure of an AC...
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JP2008305596 |
To provide a ground-fault circuit interrupter which can prevent an unnecessary operation and can comprehend visually a ground fault current occurring at present by operating with the ground current flowing in the ground due to insulation...
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JP2008298753 |
To provide a leakage current sensor, capable of detecting current over a wide range, of which the size can be reduced significantly.Two electric wires 1a, 1b are arranged in paralel to structure an electrical path and a pair of magnetic ...
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JP2008288100 |
To provide a molded-case circuit-breaker with a current alarm, capable of outputting a current alarm and displaying the current alarm without oppressing a wiring space, and a distribution board using it.This molded-case circuit-breaker w...
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JP2008288096 |
To provide a ground-fault interrupter in which a thyristor or a trip coil neither generates heat nor is deteriorated even if a test button is repeatedly operated when connected reversely.The thyristor 10 and the trip coil 4 are connected...
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JP2008277167 |
To provide, with a product cost and a development period on development suppressed, a ground fault interrupter capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and ...
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JP2008278569 |
To provide a power distribution system which can reduce a risk that a full power interruption state occurs due to the block of a main breaker.The main breaker 2 includes a power line transportation communication circuit 23 which transmit...
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JP2008277165 |
To provide a ground fault interrupter capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and equipment increases, preventing unnecessary movement and adequately preve...
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JP2008277228 |
To provide, with a product cost and a development period on development suppressed, a ground fault interrupter capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and ...
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JP2008277168 |
To provide, with a product cost and a development period on development suppressed, a ground fault interrupter capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and ...
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JP2008277166 |
To provide, with a product cost and a development period on development suppressed, a circuit breaker unit capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and equi...
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JP2008277227 |
To provide, with a product and a development period on development suppressed, a circuit breaker unit capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and equipment...
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JP2008277164 |
To provide a circuit breaker unit capable of, even if a leakage current component out of a leakage current flowing through alternate current electric paths and equipment increases, preventing unnecessary movement and adequately preventin...
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JP2008270135 |
To provide a circuit breaker without causing adhesion even when lightning surge intrudes therein; and an SPD protection system using the circuit breaker.This circuit breaker is provided with: a housing; a switching means housed in the ho...
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JP2008269921 |
To obtain an inexpensive ground fault interrupter capable of immediately making trip at double voltage impression despite being an appropriate surge suppressor to a rated working voltage.The ground fault interrupter, provided with a zero...
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JP2008262935 |
To safely carry out a voltage-withstanding test by separating a ground fault detecting circuit from a main circuit by a simple switch operation for a ground fault breaker of a single structure having a body case with a shared component w...
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JP2008243564 |
To provide a test circuit of a leakage sensor in which conduction of a radial electromagnetic wave noise to a grounding line of the leakage sensor is suppressed without inducing a common mode noise to a test winding of a zero-phase curre...
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JP2008220024 |
To provide a distribution line system capable of displaying and transmitting an interrupting current when a circuit breaker of a branch circuit performs circuit opening operation.The distribution line system includes: a main circuit 1 ha...
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JP2008210745 |
To provide a ground-fault interrupter capable of surely detecting a short-circuit accident and a ground-fault accident having occurred in the vicinity of a switching part of the ground-fault interrupter, and capable of preventing burnout...
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JP2008211865 |
To provide a remote monitoring system for breaker for wiring, which suppresses drop of workability and increase of construction cost.The system is equipped with: a breaker 2 for wiring, which is equipped with a breaking circuit which ele...
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JP2008204714 |
To achieve space saving of a unit case and to improve assemblability while protecting earth-leakage functional components housed in the unit case from an arc gas.In this leakage tripping device composed by mounting respective functional ...
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JP2008204630 |
To enable the content of abnormality to be known when energization abnormality occurs in an electronic breaker.The electronic breaker is equipped with a current detecting part 41 to detect a current, a voltage, and electric leakage or th...
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JP2008204631 |
To display current-carrying information at current-carrying normal time, at current-carrying abnormal time, and at the time of power supply off by one display tool in an easy-to-understand way, and downsize it in an electronic breaker.Th...
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JP2008198579 |
To display abnormality even when power is turned off by the occurrence of abnormality, in an electronic breaker.This electronic breaker 1 is provided with: a current detection part 41 detecting a current flowing to a load 3; an abnormali...
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JP2008186592 |
To obtain a circuit breaker capable of supplying power to an internal electronic circuit section by an output current from a current transformer installed in an AC electric circuit, and easily obtaining an AC signal waveform correspondin...
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JP2008181748 |
To provide an electric power limiter that breaks an electric current flowing through an electric path in response to a load current of the electric path to prevent an unnecessary action by a temporary overcurrent.This electric power limi...
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JP2008177140 |
To provide an ampere breaker provided with an alarm sounding function which can prevent a sudden shutdown of a power source due to an over-usage of power by checking correctness of an ampere contracted with a power supply company.In orde...
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JP2008171765 |
To obtain a downsized ground fault interrupter which does not easily display ground fault by impact and vibration at the time of opening operation of a handle without adding a component specifically.The ground fault interrupter is provid...
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JP2008166277 |
To provide a circuit breaker for interrupting current in a line conductor.The circuit breaker (10) includes: a contact (24) which becomes separable when it is activated; a tripping mechanism (26) which is selectively opened; and a serial...
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JP2008166273 |
To provide a rating plug for a circuit breaker in which a single rating plug selected optionally at a time of manufacture is enabled to be used for all of circuit breaker frames and sensors.In the rating plug, an operational amplifier ga...
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JP2008166186 |
To reduce an insulation distance, particularly, between a CR snubber circuit and another constituent component.A ground-fault interrupter 1 includes a zero-phase current transformer 2 for outputting a signal by detecting electric leakage...
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JP2008166187 |
To provide a three-phase ground-fault interrupter that performs interruption operation even if one phase in three phases is interrupted and even when electric leakage occurs on the load side while reducing an interruption operation time ...
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JP2008159456 |
To provide a ground-fault interrupter in which the number of parts of a short circuit protection function parts is reduced, and in which a short-circuit tripping unit is improved so as to attain space saving and cost reduction.This is th...
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JP2008152976 |
To provide a circuit breaker capable of thinning of a zero-phase current transformer part and furthermore thinning of the breaker main body itself.A first to third primary conductors 45, 46, 47 are made to be consisting of the center par...
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JP2008152977 |
To provide a circuit breaker capable of thinning of a zero-phase current transformer part and furthermore thinning of the breaker main body itself.On the inside face of the breaker case 4, the stationary projection 35 which is insertable...
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JP2008152974 |
To provide a circuit breaker capable to meet demand of thinning by forming the right and left width of a zero-phase current transformer thinly without decreasing insulativeness.The zero-phase current transformer is made to be a ring-form...
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JP2008153221 |
To provide a differential protection device comprising a differential current measuring means, processing means connected to the measuring means and including an operation ratio selecting means and time delay selecting means for selectin...
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JP2008128837 |
To provide an electrical leak detector that can test an electrical leak detecting circuit without supplying power supply for loading to a load, and can use low withstanding pressure article as a component used for a circuit for supply/st...
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JP2008130380 |
To provide a circuit breaker capable of housing an electromagnetic tripping device and a printed board in a space-saving manner, and of reducing the lateral width.The printed board 10 to which a circuit that makes the electromagnetic tri...
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JP2008123809 |
To provide a circuit breaker in which a separator, a tripping operation member and a zero-phase current transformer are arranged in a small space to reduce the width of the circuit breaker.An open-close operation member 7 is arranged adj...
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JP2008123808 |
To provide a circuit breaker allowing to shorten wires among a printed circuit board, a test button and an electromagnetic tripping device, or eliminate them.The circuit breaker comprises a circuit breaker case 15 including a power suppl...
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JP2008117602 |
To provide a state monitoring device of a circuit breaker, capable of notifying that a switching mechanism is not operated even though a movable contact is opened by electromagnetic repulsive force, that is, an exciting current reaches a...
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JP2008112691 |
To improve a structure to link and dispose the components of a leakage tripping device so that the device can be miniaturized and made compact.A leakage trip coil is a magnetism holding type electromagnet in which a permanent magnet 8b a...
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JP2008103083 |
To provide a test switch unit in which even if a ground fault test button of a ground fault interrupter is pushed down with a strong force, an excessive load is not applied and a sufficient insulation distance is secured between the test...
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JP2008103085 |
To provide a power supply circuit mounted on a ground fault interrupter in which an assembling structure is improved so as to realize strengthening of an impulse voltage resistance, while securing a sufficient surface insulation distance...
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JP2008097960 |
To obtain an electromotive operation device of a circuit breaker so structured to distinguish an excitation state or a non-excitation state of a UVT if one is built in the circuit breaker, and not to accept ON and OFF operation signals a...
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JP2008091111 |
To provide a circuit breaker capable of downsizing a switching mechanism section to thereby attain the further thinning.Electric supply-side terminals 1 and load-side terminals 2 are disposed on a rear surface and a front surface of a br...
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JP2008084596 |
To provide an earth leakage circuit breaker of a three-phase four-wire system without causing a dead time in earth leakage detection even if timings at which the respective phases are closed are shifted from one another.Power of an elect...
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