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Patent Searching and Data


Matches 601 - 650 out of 1,724

Document Document Title
JP3962340
To provide a reliable ground fault interrupter which is small and low-cost and requires no large-capacity resistor. A main electric path comprises an open/close contact piece 1 and a zero-phase current transformer 3. If a leakage current...  
JP3960074
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 fa...  
JP2007127550
To simply and safely test a ground leakage breaker built in an electric work drum, using a ground leakage breaker tester.In this method of testing the ground leakage breaker 20 built in the electric work drum, first and second electric p...  
JP3956462
To facilitate the terminal piece caulking work. This leakage detecting unit is provided with both terminal pieces 70a, 70b respectively formed with a bend part 72a bent on the same plane to that the alternating voltage is applied to one ...  
JP2007124809
To provide a breaker control system that can effectively prevent an electrical fire that may arise after the retransmission of power accompanied by the restoration of power interruption, in the case that there occur the collapse of a res...  
JP3951758
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...  
JP3954342
To provide an earth leakage breaker having no possibility that excessive stress is applied on a movable piece of a switch part even if a test button is operated in a condition wherein the switch part of a test circuit is not closed. One ...  
JP2007115572
To provide a compact switch for a withstand voltage test of an earth leakage breaker additionally installable in a limited space in a breaker body case without changing the layout of main components.This manual operation type switch 11 f...  
JP2007115411
To provide a current breaking device (auto-reset breaker) capable of preventing an overcurrent caused by the occurrence of thunder from flowing into an electric circuit connected to the load side of a circuit breaker.The current breaking...  
JP3950911
To provide an earth leakage breaker capable of improving workability of a conductor to a zero-phase-sequence current transformer and surely insulating the conductor of respective electrodes from each other. Respective conductor plates 22...  
JP3950903
To improve workability of a conductor against a zero-phase current transformer and enable a conductor of each polarity to surely insulate from each other. An inter-pole insulation barrier 42 arranged inside the zero-phase current transfo...  
JP3950902
To improve workability of a conductor against a zero-phase current transformer and enable a conductor of each polarity to surely insulate from each other. An inter-pole insulation barrier 42 arranged inside the zero-phase current transfo...  
JP2007095616
To provide a safe and space-saving earth leakage breaker having a simple structure.In the magnet unit 1 of this earth leakage breaker, the magnet unit 1 is composed of at least a test button 2 to open and close an artificial leakage circ...  
JP3937655
To ensure a stable tripping action characteristic by absorbing the discrepancy of a phase pitch caused by assembly errors in bimetals or the like. In an overload phase interruption tirpper which combines a differential shifter mechanism ...  
JP3933387
To provide a circuit breaker to which an auxiliary device is easily fitted. When a trip unit is operated, a latch axis 37 rotates and a trip indication arm 37c protrudes to operate an alarm switch. When a lacked voltage pull-out device i...  
JP3927311
To provide a watt-hour meter with a built-in load current limiting mechanism capable of restoring electric power supply by operation of an electric distribution switchboard installed in the indoor or a switch or a plug socket at hand wit...  
JP3924963
To improve an assembly structure so that processes for installing components, such as a residual current transformer, a printed circuit board, and a trip coil, into a body case, and processes for wiring, connecting, and soldering the com...  
JP2007053060
To provide a receptacle capable of easily positioning a member exposed from a case, with improved assembling workability.The receptacle 1 is provided with one or more of insertion plug connection parts, an abnormality detection circuit o...  
JP3920963
To reduce the number of parts items to improve operability, and realize miniaturization, by applying the constitution that when an electric current more than a fixed value, flows in a bimetel, the connection between a reset member and a ...  
JP2007048678
To provide a power outlet capable of constructing thin its shutoff mechanism part.The power outlet 1 is structured so that one or more plug connection part is provided on one side across the width of a case 3 and the shutoff mechanism pa...  
JP2007048681
To improve an assembly structure for a molded case of circuit breakers which can achieve an improvement in assemblability and safety in maintenance work.A circuit breaker comprises: a molded case 1 containing contactor sections each of w...  
JP3915219
To check the operation of an earth-leakage circuit breaker when charging an electric vehicle. An earth-leakage circuit breaker 11 is provided between an electric vehicle 100 and a wall socket of an external AC power supply. The earth-lea...  
JP2007042638
To provide an electronic trip device including a means capable of reducing power-on delay of an electronic processing unit in its power supply circuit; and to provide a circuit breaker having such a trip device.This electronic trip devic...  
JP2007026766
To prevent unnecessary electric cutoff as a result of the fact that a generating position where tracking short circuit occurs can be determined.A tracking breaker 10 in which electric cutoff is carried out by occurrence of the tracking s...  
JP2007012632
To provide an earth leakage breaker capable of improving workability of a conductor to a zero-phase-sequence current transformer and surely insulating the conductor of respective electrodes from each other.Respective conductor plates 221...  
JP3899754
To always obtain a stable reversing action, regardless of adjusted position of the adjustment dial. In a thermally-activated overload relay that is equipped with a moving plate supported reversibly around the fulcrum at an end and a tens...  
JP2007005010
To simplify work for protecting a wiring connection part of an output part of a leakage detection circuit and a lead wire of a trip coil.In this earth leakage breaker provided with: the leakage detection circuit detecting leakage and out...  
JP2006351230
To provide an earth-leakage circuit breaker having an inspection function for checking failure of insulation to the earth on the ground phase side of load-side wires with a simple operation.In the earth-leakage circuit breaker usable for...  
JP3895911
To provide a surge protection device capable of being made of a single main constituting member having a high-resistance film, for protecting a device used by a use from a surge by use of a the high-resistance film insulation breakdown o...  
JP2006345699
To provide a protection device for a load circuit that measures regularly operating characteristics of the protection device for the load circuit during the stoppage of the load circuit, and determines automatically abnormal states of pr...  
JP2006339090
To provide a ground fault interrupter with a fail-safe function improved so as to be enabled to detect leakage current in a precise sensitivity.In the ground fault interrupter structured so as to convert an interphase voltage of a main c...  
JP3890352
To provide a ground leakage breaker improved in workability of a conductor in relation to a zero-phase-sequence current transformer and is capable of mutually and surely insulating a conductor of each of poles. When an interpole insulati...  
JP3890351
To improve workability of a conductor against a zero-phase current transformer and enable a conductor of each polarity to surely insulate from each other. An inter-pole insulation barrier 42 arranged inside the zero-phase current transfo...  
JP3890350
To improve workability of a conductor against a zero-phase current transformer and enable a conductor of each polarity to surely insulate from each other. An inter-pole insulation barrier 42 arranged inside the zero-phase current transfo...  
JP3890353
To improve workability of a conductor against a zero-phase current transformer and enable a conductor of each polarity to surely insulate from each other. An inter-pole insulation barrier 42 arranged inside the zero-phase current transfo...  
JP3890150
To enable quick power-up initial setting of a microprocessor of removing apparatus, by promoting initiation of sampling process and application of protection algorithm through application of auxiliary initial setting algorithm to the mic...  
JP2006331889
To provide a multipole type circuit breaker with improved assemblability.A container body 1 of the circuit breaker comprises a body 2 wherein a first storing part 6 whose upper surface is opened and a second storing part 7 whose side sur...  
JP2006318699
To obtain a circuit breaker with a conduction information processing function capable of effectively utilizing a space on the surface of a circuit breaker main body, and easily making attachment and detachment of a display part as a cond...  
JP2006320193
To provide an electric power shutdown system that aims to shut down a specific electrical circuit of an electric breaker, when a fire breaks out to resist the expansion of a disaster.An electric power shutdown system includes a fire dete...  
JP2006313728
To provide a control system of a breaker capable of preventing effectively an electric fire which may happen after re-transmission of power accompanying power failure restoration in the case of collapse and damage of houses, gas leakage,...  
JP2006310030
To provide a ground leakage breaker wherein arc gas and metal melt generated between contacts when interrupting a current, are prevented from coming around between phases and into the storage space of a zero-phase sequence current transf...  
JP2006310165
To provide a ground-fault interruptor having a function of interrupting the electric path when a terminal loosens.In the ground-fault interruptor, a pressure-sensitive sensor 8 to detect the loosening is screw fastened to the terminal to...  
JP2006302775
To more easily reduce in size a printed-circuit board of a leakage guard relay mounting circuit components on one printed-circuit board.Power supply terminals L1, L2 and load terminals L'1, L'2 are arranged on front surface side of one r...  
JP2006302601
To obtain a highly reliable earth leakage breaker which can surely perform a leakage current test even when an open phase or a very small leakage current occurs in an AC-power-supply line.This earth leakage breaker comprises; a power sou...  
JP2006296047
To provide a surge protection device that can be protected by surely detecting a surge, and a hot-water feeding device using the surge protection device.When the lightning surge S intrudes from a power supply line Vccl, a phototransistor...  
JP2006296102
To develop a technology for eliminating interruptions to a power supply circuit when an earth-leakage interruption device is operated, in the operation of a safety device.In the earth-leakage interruption device 3 that interrupts a power...  
JP3867540
To realize reduction of component number of a product and cost reduction by applying to the attached use for the shortage voltage tripping device having a fast-in auxiliary contact point by simply replacing the switching operating handle...  
JP3867541
To secure stable contact of the auxiliary switch contact point and to prevent deformation caused by high temperature creep of the auxiliary switch drive lever incorporated in the circuit breaker in the shortage voltage tripping device ha...  
JP3864440
To reliably turn off interior electric power supply even at the time when electric power supply is cut in a disaster by providing at least any of electric power breaking, tremor sensing, signal judging, and controlling means with another...  
JP2006278113
To obtain a two pole one element type earth leakage breaker easy to assemble, without changing such a component disposition structure in which an voltage pole and a neutral pole is housed in one housing, a leakage detecting part is house...  

Matches 601 - 650 out of 1,724