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JP5015320B2 |
An earth leakage circuit breaker (ELCB) with a function of detecting a leakage current which backflows while cutting off an electric leakage is disclosed. The ELCB includes: a breaker portion for detecting an occurrence of an electric le...
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JP5006123B2 |
To provide a connection failure detecting circuit for adequately detecting a connection failure of a terminal portion. The terminal portion consists of a crimp-type terminal 11 mounted on an electric wire 10, a washer 12 for a connection...
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JP4998119B2 |
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JP2012150110A |
To provide a circuit protection system.A circuit protection system (100) includes: a first current detection device (102) operating so as to measure a current of a first phase (151) of a voltage source; a second current detection device ...
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JP2012152071A |
To solve the following problem: in implementing a self diagnosis for a switching device forming an earth leakage breaker, when two contact points for both-end cutting a power line are operated at the same time, welding failure on only on...
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JP4994820B2 |
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JP4990588B2 |
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JP4990589B2 |
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JP4981550B2 |
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JP4977003B2 |
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JP4977002B2 |
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JP4972998B2 |
The breaker has a ground fault detection circuit (7) i.e. integrated circuit card, a trip coil (8) and a megger test switch (11) constructed to form three units. The units are installed together on a side of a zero-phase current transfor...
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JP4966111B2 |
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JP4967453B2 |
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JP4967602B2 |
The invention relates to a creepage disengaging device for a creepage breaker, with a subject of improving the connection and configuration structure of the components of the creepage disengaging device loaded in the creepage breaker so ...
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JP4960170B2 |
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JP4960800B2 |
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JP2012119268A |
To provide a method of establishing operational environment of an earth leakage circuit breaker which allows for easy determination and establishment of a normal operating environment of an earth leakage circuit breaker.A confirmation is...
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JP4950869B2 |
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JP4949927B2 |
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JP4948316B2 |
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JP4939954B2 |
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JP4939869B2 |
The The invention provides circuit breaker, which can make the breaker housing small and thin. In the circuit breaker, a tripping loop acts and a separator rises to cut off the main circuit when a leakage detection circuit on the printin...
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JP4937826B2 |
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 transmi...
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JP4938435B2 |
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JP4938434B2 |
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JP4935455B2 |
One end of test coil (11) of a zero phase current transformer (4) is connected to alternating current (AC) input port of rectifier circuit (10) through a test switch (8). A cathode connected to other end of the AC input port of rectifier...
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JP4931754B2 |
The invention obtains an electric leakage circuit breaker, which can reduce the voltage applied between the contacts of the test switch, and can reduce the insulating intensity requirement between the test coil and the secondary coil of ...
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JP4933208B2 |
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JP4926015B2 |
The present invention provides a leakage relay capable of executing leakage detection without winding detection coil on zero phase current transformer, simultaneously capable of detecting out break or leakage with the zero phase current ...
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JP2012084470A |
To provide an earth leakage breaker for distribution board megger test of which can be carried out easily by changing the power supply of a leakage detection circuit from a main circuit in a breaker to an external power supply.The earth ...
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JP2012084494A |
To resolve a problem that, although electricity is conventionally used as energy and recently used for information communication by a computer or the like and becomes important more than ever due to IT development, since generation of a ...
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JP4921934B2 |
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JP4921931B2 |
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JP3174963U |
To provide an earth leakage breaker operated by a fire smoke alarm, which can be used automatically and stably without human intervention and can be easily and easily realized. The earth leakage breaker is operated by this fire smoke ala...
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JP2012079465A |
To realize an automatically restoring overcurrent circuit breaker which is built in a compact body by adopting simple means for detecting surge currents.The automatically restoring overcurrent circuit breaker includes a cutoff circuit 10...
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JP4920890B2 |
An electric circuit breaker apparatus protects an electrical circuit against excessive current loads. A first remotely programmable circuit breaker trip device receives an external command with a programmable current threshold, detects a...
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JP4914297B2 |
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JP4910663B2 |
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JP4908245B2 |
The purpose of the invention is to obtain a circuit breaker, which uses an output current of a converter set in an alternating current (AC) circuit to supply power to an internal electronic circuit part, and easily obtains a AC signal wa...
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JP4908118B2 |
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JP4910913B2 |
The interrupter has a null phase current transformer (5) and primary conductors fixed to a unit assembling armature (18) for forming an assembly that is incorporated in a main body's case. The conductors act as stranded wires (15). The a...
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JP4906517B2 |
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JP4896970B2 |
The present invention relates to an Earth Leakage Circuit Breaker (ELCB) used as an electric switch for an electrical circuit which employs a double breakage method of determining whether leakage occurs based on total leakage voltage of ...
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JP4895191B2 |
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JP4893450B2 |
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JP4893358B2 |
The device (10) has a stacked unit case including a flat plate shaped upper case (20) stacked on a lower case (19), and made of molded resin. The case (19) houses a trip coil (6) i.e. electromagnet, and a ground fault indication button (...
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JP4885594B2 |
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JP4873763B2 |
A leakage detector is provided with the addition of an output control circuit that monitors a circuit wire-to-ground voltage, which is at the root of a suffered operation and produced between a transformer B-class grounding phase of a mo...
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JP4856518B2 |
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