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JP2004055421 |
To provide a leakage display device of an earth leakage breaker allowing reduction in the number of components, saving labor in assembling, and cost reduction.An elastic locking piece 6b is integrally formed with a bobbin 6 around which ...
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JP3520947 |
To achieve the low cost of a circuit breaker for breaking an electric path at an opening contact 6 at the abnormal time by detecting the overcurrent and the leak of the electric paths from current transformers 1-3. The outputs of current...
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JP2004031275 |
To improve the operational reliability and life of a double-pole ground fault interrupter.A bimetallic strip 6 is arranged on that side of a moving contact 5 which has a power terminal 3 opposite to a leakage detection mechanism 12. The ...
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JP2004022361 |
To provide a ground fault breaker for lowering the height of a breaker case.The ground fault breaker 3 packages a sensitivity selection switch 1 for switching sensitivity for detecting ground fault on a rectangular board 2. A coil for gr...
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JP2004023850 |
To provide a circuit breaker for a single-phase three-wires with neutral conductor phase-interruption protection, capable of preventing omission of the connection of a lead wire for phase interruption detection to the neutral wire.A volt...
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JP2004022360 |
To provide a sensitivity switching apparatus for a ground fault breaker that prevents a knob from being removed in assembly, has improved assembly working efficiency, and prevents the operation projection of a selection switch from being...
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JP2004022462 |
To provide a tracking breaker operating at the time point of occurrence of a fine discharge current due to a carbonized conductive path generation.This tracking breaker has: a current transformer 2 for detecting a current of an electric ...
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JP2004022259 |
To provide a circuit breaker capable of simplifying the circuit configuration and reducing the power consumption, and possible to be miniaturized.This circuit breaker is provided with current transformers CT1-CT3, a full wave rectificati...
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JP2004014301 |
To provide a voltage display device for a breaker capable of confirming a voltage of a primary-side terminal of the breaker without preparing measuring instruments such as a tester, confirming to which the terminal the voltage is applied...
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JP2004015961 |
To provide a ground fault interrupter with three-phase phase-failure protector which is strong against a vibration or an impact and which can be easily manufactured at a low cost.A zero-phase current transformer 2 for detecting a leakage...
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JP3503396 |
To facilitate the assembling work by tripping a circuit breaker when the detected voltage becomes the reference voltage or below, releasing the engagement with a crossbar, and moving an actuator to the reset position with a reset lever v...
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JP2003323841 |
To enable a check of an electric leakage detection even without opening the electrodes at the contact point for the main circuit by a breaking part in a ground leakage breaker.A means to connect a control means to form a control signal f...
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JP2003317598 |
To provide a circuit breaker improved in reliability and response of an arc-detecting circuit to an arc.The circuit breaker comprises a pole-opening mechanism 1 which cuts off a circuit connection between a power source and a load, an ar...
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JP3489307 |
To prevent breaking of a leak testing movable plate, and easily and reliably install a cover on a body of a housing when a leak testing button is installed after an internal mechanism of an earth leakage breaker is housed in the housing....
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JP2003310470 |
To provide an electric leakage indicator system for a bathroom capable of effectively informing bathers therein of electric leakage when it occurs.The system comprises an earth leakage breaker circuit 19 for cutting off circuits when the...
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JP2003308775 |
To provide an under-voltage trip device for a circuit breaker, capable of obtaining stable hysteresis characteristics which is less likely to be affected by the size of inner resistances of an under-voltage tripping coil and a transforme...
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JP3485976 |
PURPOSE: To ensure the safety in the operation of a remote test switch by electrically insulating the input side and output side of a remote test device from each other. CONSTITUTION: A remote test switch H is closed to apply the AC or D...
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JP2003297218 |
To provide an earth leakage breaker in which a short-circuit accident is not caused even when a zero-phase-current transformer is installed at right beside an electric leakage detection substrate.An insulating wall 21 is installed integr...
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JP2003288832 |
To provide a power supply equipment capable of preventing second disaster after destruction of a house or the like as well as interrupting power supply path by detecting an earthquake or the like.When power supply is stopped from an oute...
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JP3482052 |
To easily install a power shutoff device in a house at low cost by using a detecting part in detecting vibration or inclination of a case part, and operating a leakage generating part if the magnitude of it exceeds a predetermined value....
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JP2003272508 |
To provide an earth leakage breaker capable of saving space and achieving miniaturization by decreasing the number of component parts.The opening/closing mechanism 5 of this earth leakage breaker is composed of a first tripping plate 41 ...
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JP2003272510 |
To provide an earth leakage breaker involving no risk that the arc gas causes inter-electrode shortcircuiting of a copper bar on the power supply side and that eventual leakage damages a leak sensing circuit.An opening/closing part 8 is ...
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JP2003272509 |
To provide a structure of a circuit breaker including a current transformer and its periphery formed thin and/or small assuring easy constitution and easy assembly.The circuit breaker is composed of two main circuit electric conduction p...
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JP3475692 |
To easily discriminate the leakage condition and the electrifying condition by turning a display member around a pivotal support part with a movement of a movable frame between the normal condition and the leakage condition, and fitting ...
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JP2003274550 |
To perform operation checks by transmitting pseudo signals to a secondary coil of a ZCT from a relay side, when testing an electric leakage relay, eliminating the test coil in a conventional ZCT and a lead wire which connects the test co...
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JP2003263947 |
To secure attaching space inside a power board and to simplify wire connecting operation by making a separate ammeter and a power converter, etc., unnecessary.Load current value is calculated by a calculating circuit 5 based on current d...
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JP2003249160 |
To provide a ground fault circuit interrupter which prevents change of leak detecting sensitivity due to a noise current in a secondary winding caused by a stray capacitance between a test winding and the secondary winding.The ground fau...
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JP2003223840 |
To provide a simple and low cost ground leakage fault breaker that can shutoff electric leakage in a load side and the overcurrent of feed paths (R-U) and (T-W) by making R and T as power terminals, while U and W as load terminals.The ze...
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JP2003223839 |
To prevent burn out accidents by abnormal heat generation or the like of an electronic circuit breaker.The electronic circuit breaker has a control means comprising the steps of (a) comparing a load current (I) with an opening threshold ...
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JP2003223841 |
To locate the leakage point of the system of a drive system under operation.A leakage detection circuit 22 is provided near a battery 12 of the drive system 10. An electronic control unit 30 for determining the leakage point is provided....
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JP2003217433 |
To provide a ground fault interrupter with a current leakage measuring display device allowing the measurement and display of a leakage current value for an electric circuit and the correction of the measurement without causing a closing...
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JP2003217434 |
To provide a trip coil for a ground fault interrupter with a surge absorbing element having a longer product life by offering simple structure improving voltage resistance performance without increasing cost and reducing surge voltage ap...
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JP2003219552 |
To solve the problem associated with a conventional ground detector, which detects positive and negative signals of ground current sand if ground fault occurs at the phase control part of an inverter, there are only positive or negative ...
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JP2003208844 |
To provide a leakage display device of an earth leakage breaker capable of surely displaying a leakage if occurs.This leakage display device 2 assembled in the earth leakage breaker 1 comprises a leakage display button 4 installed so as ...
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JP2003203550 |
To improve workability of a conductor to a zero-phase-sequence current transformer, and to mutually surely insulate the conductor of respective poles.When arranging an interpolar insulating barrier 42 inside the zero-phase-sequence curre...
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JP3451335 |
To provide a solar cell module which can suppress the damage minimum due to the lightening surge. This solar cell module comprises serially connected solar cells 3 and bypass diodes 10 connected in parallel to the series connections of t...
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JP3452445 |
To provide an earth leakage breaker which not only can eliminate unnecessary operations due to a leakage current caused by the stray capacitance of a wiring section, but can also protect human bodies. An earth leakage breaker is composed...
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JP2003197083 |
To provide a tester for earth leakage breaker capable of performing the operational test of an earth leakage breaker without operating a measurement start button by merely bringing the measurement terminals thereof (single core measureme...
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JP2003199243 |
To provide a circuit breaker which is used between a phase conductor and a neutral conductor and has an overvoltage detecting circuit such as a metal oxide varistor in a trip circuit thereof.An overvoltage detecting circuit enables a tri...
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JP2003199266 |
To provide a remote controller for a circuit breaker, which enables an administrator to control the circuit breaker quickly and safely from any place without moving to a special place such as a control panel or a control room.This remote...
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JP2003194871 |
To provide an electric leakage detecting device capable of completely confirming a circuit operation in detecting the electric leakage in safety.This electric leakage detecting device comprises a first forcible electric leakage generatin...
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JP2003194870 |
To provide an electric leakage detecting device capable of quickly detecting the electric leakage in starting an HEV and the like.This electric leakage detecting device comprises a signal generator 31 for generating a signal of which a f...
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JP2003187685 |
To provide a circuit breaker capable of easily mounting current transformers, equipped with two built-in current transformers as well.Two current transformers CT are mounted to the circuit breaker housing contact points of three poles. T...
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JP3438425 |
To output to the outside, by providing an auxiliary switch to be turned off only when a leakageis detected to turn off a main circuit switch. A micro switch 9 is provided wherein a plate spring 8 is fitted to a leakage trip device 10 pro...
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JP2003162950 |
To provide a ground-fault interrupter in which a work for assembling components in an apparatus is easy.There are provided a handle, a contact of a plurality of poles, a zero-phase current transformer ZCT which detects unbalanced current...
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JP2003162953 |
To provide a ground-fault interrupter whose body can be miniaturized.There are provided a handle 6, a multiple-pole contacts 2A, 2B, 3A, and 3B, a zero-phase current transformer ZCT, and a leakage test button 78. There is also provided c...
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JP2003162952 |
To provide a ground-fault interrupter capable of improving workability in assembly.The ground-fault interrupter comprises a zero-phase current transformer 11 which is, housed in a case and formed annularly, wound with a secondary coil, a...
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JP3436080 |
To simplify and miniaturize through the release of a latch of a switching mechanism by means of the movement of a plunger, so as to forcibly open a contact part, placing in a housing in a manner capable of protruding and withdrawing, ene...
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JP2003162951 |
To provide a ground-fault interrupter capable of eliminating possibility of reverse connection by an operator while a work of measuring insulation resistance of a load is easy.There are provided an apparatus body 1 where a pair of plug-i...
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JP2003151424 |
To achieve a circuit breaker, which has an undervoltage tripper for turning off a switching contact when voltage in a load cable way is less than or equal to a prescribed voltage, capable of ensuring that the undervoltage tripper is rese...
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