CN204167873U - Residual current circuit breaker - Google Patents
Residual current circuit breaker Download PDFInfo
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- CN204167873U CN204167873U CN201420471757.4U CN201420471757U CN204167873U CN 204167873 U CN204167873 U CN 204167873U CN 201420471757 U CN201420471757 U CN 201420471757U CN 204167873 U CN204167873 U CN 204167873U
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
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- Breakers (AREA)
- Rectifiers (AREA)
Abstract
The utility model relates to a kind of residual current circuit breaker, can use the parts that drive current is few, caloric value is little in this residual current circuit breaker.This residual current circuit breaker has: opening and closing contact, and it makes alternating current circuit break-make; Zero phase current transformer, it detects the Zero-phase current of alternating current circuit; Electric-leakage detection circuit, its detection signal based on zero phase current transformer and detect electric leakage; Tripgear, it is driven by electric-leakage detection circuit; Capacitor voltage-dropping power supply circuit, it is connected with alternating current circuit; 1st rectification circuit, it is connected to the back segment of this capacitor voltage-dropping power supply circuit, to electric-leakage detection circuit supply electric power; 2nd rectification circuit, it is connected with alternating current circuit; And self-extinction of arc type switch element, it is driven by electric-leakage detection circuit and makes the breaking coil excitation of tripgear, in this residual current circuit breaker, one end of self-extinction of arc type switch element is connected with the 2nd rectification circuit, between this other end and the negative side of the 2nd rectification circuit, be connected with breaking coil.
Description
Technical field
The utility model relates to a kind of when the leakage current of circuit is more than or equal to setting, by the residual current circuit breaker that this circuit disconnects, particularly relates to a kind of action power of residual current circuit breaker.
Background technology
Current, the residual current circuit breaker used that circulating utilizes the electric-leakage detection circuit be such as made up of integrated circuit be built in this residual current circuit breaker mostly, the grade of the signal detected by zero phase current transformer is judged, if the grade of signal exceedes setting, then make turn on thyristors according to the output of electric-leakage detection circuit, drive built-in electromagnet apparatus, make residual current circuit breaker open circuit, circuit is disconnected.But, when the action of these electric-leakage detection circuits and electromagnet apparatus, need power consumption, this electric power from the inside of residual current circuit breaker, the AC400V of the voltage between lines of such as circuit obtains, and is transformed to voltage, the such as DC12V of regulation, then supply.Now, in the residual current circuit breaker of 3 poles, usually (conveniently, be called R phase, S-phase, T-phase from 3 poles.That is, S-phase is equivalent to middle pole.) in the two poles of the earth, outside, namely, the alternate acquisition of R-T.But its reason is, when the residual current circuit breaker of 3 poles is used in single phase circuit, exists and connection is defined in R-T this restrictive condition alternate.
In addition, be not limited to this residual current circuit breaker, long ago just propose the internationalization of controller switching equipment, so-called global normalization.Specifically, require that residual current circuit breaker meets the standard of IEC (international standard) 60947-2 AnnexB, but with JIS (Japanese Industrial Standards) C8201-2-2 Annex2 (namely, the exclusive standard of Japan) one of difference be, even if when three-phase circuit a certain there occurs loss phase mutually, leakage function also must regular event.Therefore, as noted above, when acquisition voltage alternate with R-T, the loss phase of S-phase is not problem, but when R phase or T-phase loss phase, can cause losing leakage function immediately.
In order to prevent the forfeiture of this leakage function, known following technology, that is, when obtaining three phase mains and namely obtaining action electric power mutually from three-phase circuit each, utilize rectification circuit to carry out rectification, can be reduced to the voltage of regulation.According to which, even if when a certain phase loss phase, remaining two-phase also can be utilized to generate action electric power, therefore, leakage function continues regular event.In addition, also there is affecting mechanism, that is, when being used in single phase circuit, without the need to necessarily vacating S-phase, that is, also can be connected to that R-S is alternate or S-T is alternate (for example, referring to patent documentation 1).
Patent documentation 1: Japanese Unexamined Patent Publication 2009-59607 publication Fig. 1
In existing circuit-breaker, according to the output from aforesaid electric-leakage detection circuit, make turn on thyristors, drive magnet device, thus making residual current circuit breaker open circuit, this is known, but the output of electric-leakage detection circuit now needs the thyristor larger to drive current to drive.Therefore, the caloric value of necessary reply electric-leakage detection circuit increases, by situations such as the capacity increases of capacitor that uses in a power.In addition, when using solenoid at a low price in electromagnet apparatus, thyristor is not surface installation type but the parts of wire type, therefore, owing to using the thyristor of wire type, also needs to increase substrate.
Utility model content
The utility model proposes to solve above-mentioned problem, its object is to obtain a kind of residual current circuit breaker, by using the parts that drive current is few, caloric value is little in this residual current circuit breaker, thus can realize miniaturization.
Residual current circuit breaker involved by the utility model, it has: opening and closing contact, and it makes alternating current circuit break-make; Zero phase current transformer, it detects the Zero-phase current of alternating current circuit; Electric-leakage detection circuit, it is connected with this zero phase current transformer, based on zero phase current transformer detection signal and detect electric leakage; Tripgear, it is driven by this electric-leakage detection circuit; Concatermer, its respectively with being respectively connected of alternating current circuit, be connected in series by resistance and capacitor; 1st rectification circuit, it is connected to the back segment of this concatermer, to electric-leakage detection circuit supply electric power; 2nd rectification circuit, it is connected with alternating current circuit; And switch element, it is connected to the back segment of the 2nd rectification circuit, the breaking coil excitation of tripgear is made by being driven by electric-leakage detection circuit, in this residual current circuit breaker, switch element is self-extinction of arc type switch element, further, one end of switch element is connected with the 2nd rectification circuit, between the other end and the negative side of the 2nd rectification circuit of switch element, be connected with described breaking coil.
The effect of utility model
According to the utility model, can obtain a kind of acquisition three-phase power circuit circuit breaker, it can use small-sized, that caloric value is few parts, can tackle high order harmonic component circuit and reverse connection circuit.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the 3 pole residual current circuit breaker represented in execution mode 1 of the present utility model.
Fig. 2 is the circuit diagram of the 3 pole residual current circuit breaker represented in execution mode 2 of the present utility model.
The explanation of label
2 opening and closing contacts, 3 zero phase current transformers, 4 electric-leakage detection circuits, 5 self-extinction of arc type switch elements, 6 tripgears, 7 power circuits, 71 capacitor voltage-dropping power supply circuits, 72 the 1st rectification circuits, 73 Zener diodes, 75 the 2nd rectification circuits, 101 residual current circuit breaker.
Embodiment
Execution mode 1.
Fig. 1 is the circuit diagram of the 3 pole residual current circuit breaker represented in execution mode 1 of the present utility model.
In FIG, residual current circuit breaker 101 has: opening and closing contact 2, and it makes alternating current circuit 1 break-make; Zero phase current transformer 3, it is inserted in alternating current circuit 1, detects the Zero-phase current of alternating current circuit 1; Electric-leakage detection circuit 4, it is connected with this zero phase current transformer 3, based on zero phase current transformer 3 detection signal and detect electric leakage; Tripgear 6, it is driven by the output signal of this electric-leakage detection circuit 4; Self-extinction of arc type switch element 5, it is by being driven by electric-leakage detection circuit 4 and making the breaking coil 6a excitation of tripgear 6; And power circuit 7, it supplies electric power to both electric-leakage detection circuit 4 and tripgear 6.
In addition, tripgear 6 has: breaking coil 6a, and it is excited according to the conducting of self-extinction of arc type switch element 5; And tripping mechanism 6b, it is at this breaking coil 6
aduring excitation, opening and closing contact 2 is separated.
The alternating voltage inputted from alternating current circuit 1 is transformed to the direct voltage of regulation by power circuit 7, such as, be transformed to DC12V, supplies exciting current to breaking coil 6a, and, supply electric power to electric-leakage detection circuit 4.
In addition, in self-extinction of arc type switch element 5, MOSFET, the IGBT etc. with voltage control grid are used in order to suppress the output current from electric-leakage detection circuit 4.
Below, the detailed construction of power circuit 7 is described.Power circuit 7 has: capacitor voltage-dropping power supply circuit 71, and its each with alternating current circuit 1 is connected mutually respectively, is by the current limitation resistor 71a of Limited Current and the concatermer that forms with the capacitor 71b that this current limitation resistor 71a is connected in series; 1st rectification circuit 72, it is connected to the back segment of this capacitor voltage-dropping power supply circuit 71, is made up of diode full-bridge circuit; Zener diode 73, its negative electrode is connected with the side of the positive electrode of the output of the 1st rectification circuit 72, for carrying out step-down to the output voltage of the 1st rectification circuit 72; And smoothing capacitor 74, the two ends of itself and this Zener diode 73 are connected in parallel.
In addition, the anode of Zener diode 73 is connected with one end of breaking coil 6a, and the negative side of the output of the 1st rectification circuit 72 is connected with the other end of breaking coil 6a.
Further, power circuit 7 has the 2nd rectification circuit the 75,2nd rectification circuit 75 and is connected with alternating current circuit 1, generates the power supply for driving breaking coil 6a.Certain in 3 phases of the 2nd rectification circuit 75 pairs of alternating current circuits 12 carries out full-wave rectification mutually.
If illustrated in further detail, then the 2nd rectification circuit 75 has: diode 75a, and its anode is connected with the R of alternating current circuit 1, and negative electrode is connected with the drain electrode of self-extinction of arc type switch element 5; Diode 75b, its anode is connected with the S-phase of alternating current circuit 1, and negative electrode is connected with the negative electrode of diode 75a; Diode 75c, its negative electrode is connected with the T-phase of alternating current circuit 1, and anode is connected with the negative side of the output of the 1st rectification circuit 72; And diode 75d, its negative electrode is connected with the S-phase of alternating current circuit 1, and anode is connected with the anode of diode 75c.
The side of the positive electrode of the output of the 1st rectification circuit 72 is connected with the power supply terminal 4a of electric-leakage detection circuit 4, is connected with the ground connection 4b of electric-leakage detection circuit 4 at the tie point place of the anode of one end of breaking coil 6a and Zener diode 73.The output port 4c of electric-leakage detection circuit 4 is connected with the grid of self-extinction of arc type switch element 5 via resistance 8.The tie point of the anode of the source electrode of self-extinction of arc type switch element 5 and one end of tripgear 6 and Zener diode 73 is connected.
In addition, between the grid and source electrode of self-extinction of arc type switch element 5, be connected with resistance 9, form divider resistance by resistance 8 and resistance 9, the voltage of the grid being applied to self-extinction of arc type switch element 5 is adjusted.Further, between the grid and source electrode of self-extinction of arc type switch element 5, be also connected with the capacitor 10 for preventing the misoperation caused because of noise.
In addition, described in detail in the claims " one end of switch element " refers to the drain electrode of above-mentioned self-extinction of arc type switch element 5, and similarly, described in detail in the claims " other end of switch element " refers to the source electrode of above-mentioned self-extinction of arc type switch element 5.
Below, the action of power circuit 7 is described.
In the normal state, if from R, the S of alternating current circuit 1, T-phase (above the paper of Fig. 1, be R, S, T-phase from left side) supply the alternating voltage of about AC100V ~ 400V, then in the concatermer formed by the current limitation resistor 71a and capacitor 71b that form capacitor voltage-dropping power supply circuit 71, flow through alternating current, be transformed to direct current power by the 1st rectification circuit 72.From the direct current power that the 1st rectification circuit 72 exports, by being connected to the direct voltage such as DC12V that the Zener diode 73 of the back segment of the 1st rectification circuit 72 and capacitor 74 and step-down are regulation, and, smoothingization and be supplied to electric-leakage detection circuit 4.
Below, the object connecting breaking coil 6a between the ground connection 4b and the negative side of the 1st rectification circuit 72 of electric-leakage detection circuit 4 is described.
Power circuit 7 adopts athermic capacitor voltage-dropping power supply circuit 71, therefore, for the surge current of the high frequency values flowed into from alternating current circuit 1, become Low ESR because the frequency f in the impedance i.e. 1/2 π fC of capacitor voltage-dropping power supply circuit 71 becomes large, therefore, voltage cannot be made to reduce.At this, C is the capacity of capacitor 71b, and f is the frequency of the surge current from alternating current circuit 1 inflow.
Therefore, there is the problem making the overloads such as testing circuit in electric-leakage detection circuit 4 and fixed voltage circuit.In order to solve this problem, utilizing the reactance value i.e. 2 π fL of breaking coil 6a, suppressing the surge current flowed into from alternating current circuit 1.Thus, the testing circuit in electric-leakage detection circuit 4 and fixed voltage circuit etc. is protected to become overload.At this, L is the inductance of breaking coil 6a.
On the other hand, in order to drive tripgear 6, supply voltage must be made not produce voltage drop and directly be applied to breaking coil 6a.Therefore, in the 2nd rectification circuit 75, from alternating current circuit 1 side of capacitor voltage-dropping power supply circuit 71, respectively the anode-side of diode 75a, 75b is connected with R, S two, the drain electrode of the cathode side of diode 75a, 75b with self-extinction of arc type switch element 5 is connected.
In addition, the anode-side of diode 75c, 75d one end with breaking coil 6a is connected, respectively alternating current circuit 1 side of the cathode side of diode 75c, 75d from capacitor voltage-dropping power supply circuit 71 is connected with R, S two.Thus, form certain 2 half-wave rectifying circuit of carrying out full-wave rectification mutually in 3 phases of alternating current circuit 1, when self-extinction of arc type switch element 5 is connected, form the circuit structure walking around capacitor voltage-dropping power supply circuit 71.
Below, the action of residual current circuit breaker 101 is described.
The power line of alternating current circuit 1 inserts to the zero phase current transformer 3 of the load-side (downside on the paper of Fig. 1) being configured in opening and closing contact 2, when the balance of the electric current flowing through alternating current circuit 1 is destroyed, namely, when producing the leakage current from alternating current circuit 1 to earth terminal, export the signal be directly proportional to the grade of this leakage current from this zero phase current transformer 3.
From the signal that zero phase current transformer 3 exports, be sent to electric-leakage detection circuit 4 via not shown voltage conversion circuit.In this electric-leakage detection circuit 4, the peak voltage of the signal sent or the width of signal are differentiated, when being judged to be that these signals exceed the grade of regulation, to the gate output signal of self-extinction of arc type switch element 5, thus conducting between the Drain-Source making this self-extinction of arc type switch element 5.By this conducting, breaking coil 6a is excited, and drives tripping mechanism 6b, thus disconnects opening and closing contact 2, the fire caused or personal injury is prevented trouble before it happens because of leakage current.
In addition, electric-leakage detection circuit 4 forms this point by integrated circuit, and from this electric-leakage detection circuit 4 to the supply of the signal of self-extinction of arc type switch element 5, no matter the mains side of residual current circuit breaker 101 and load-side are the just connections be just formed by connecting, or the mains side of residual current circuit breaker 101 and load-side are the reverse connections of reverse connection, all reset along with the disappearance of leakage current, between the Drain-Source of self-extinction of arc type switch element 5, become non-conduction.Further, owing to becoming non-conduction between the Drain-Source of self-extinction of arc type switch element 5, therefore the excitation of breaking coil 6a stops.
In addition, when becoming non-conduction between the Drain-Source of self-extinction of arc type switch element 5, between the two ends of breaking coil 6a, surge voltage is produced.Therefore, as a rule, fly-wheel diode is connected in parallel at the two ends of breaking coil 6a, but in the present embodiment, the circuit of diode → Zener diode 73 → breaking coil 6a of breaking coil 6a → formation the 1st rectification circuit 72, owing to having the effect of fly-wheel diode, therefore, without the need to arranging fly-wheel diode.
According to the present embodiment, have: capacitor voltage-dropping power supply circuit 71, it is connected mutually respectively with each of alternating current circuit 1, is connected in series by resistance 71a and capacitor 71b; 1st rectification circuit 72, it is connected to the back segment of this capacitor voltage-dropping power supply circuit 71; 2nd rectification circuit 75, it is connected with alternating current circuit 1; And self-extinction of arc type switch element 5, it is connected to the back segment of the 2nd rectification circuit 75, make the breaking coil 6a excitation of tripgear 6, one end of self-extinction of arc type switch element 5 is connected with the side of the positive electrode of the 2nd rectification circuit 75, breaking coil 6a is connected with between the negative side and the other end of self-extinction of arc type switch element 5 of the 2nd rectification circuit 75, therefore, electric-leakage detection circuit 4 drives the electric current of self-extinction of arc type switch element 5 to reduce, and can suppress the heating of the power circuit 7 in residual current circuit breaker 101.Further, owing to suppressing the heating of the power circuit 7 in residual current circuit breaker 101, therefore, it is possible to obtain residual current circuit breaker that is small-sized and low price.
In addition, due to have employed athermic capacitor voltage-dropping power supply circuit 71, in order to suppress the output current from electric-leakage detection circuit 4 have voltage control grid self-extinction of arc type switch element 5 and in the driving power of breaking coil 6a as the 2nd rectification circuit 75 of half-wave rectifying circuit, therefore, it is possible to suppress the caloric value of power circuit 7.
In addition, one end of self-extinction of arc type switch element 5 is connected with the side of the positive electrode of the 2nd rectification circuit 75, breaking coil is connected with between the negative side and the other end of self-extinction of arc type switch element 5 of the 1st rectification circuit 72, therefore, the reactance value i.e. 2 π fL of breaking coil 6a can be utilized, suppress the surge current flowed into from alternating current circuit 1.
In addition, owing to making breaking coil 6a excitation by self-extinction of arc type switch element 5, therefore, even if residual current circuit breaker 101 by power supply survey and load-side reverse connection state under, when output disconnects by electric-leakage detection circuit 4, stop the excitation of breaking coil 6a, burning of breaking coil 6a can be prevented.
In addition, the circuit of diode → Zener diode 73 → breaking coil 6a of breaking coil 6a → formation the 1st rectification circuit 72, owing to having the effect of the fly-wheel diode be arranged in parallel relative to breaking coil 6a, therefore, without the need to arranging fly-wheel diode in the drive circuit of breaking coil 6a, can be miniaturized by residual current circuit breaker 101.
In addition, utilize athermic capacitor voltage-dropping power supply circuit 71, galvanic current source is supplied to electric-leakage detection circuit 4 via the 1st rectification circuit 72, breaking coil 6a is connected in series with capacitor voltage-dropping power supply circuit 71, thus no matter for which phase, all can absorb the surge current from DC power supply 1, therefore, even if when certain there occurs loss phase mutually and electric leakage accident occurs, output current from electric-leakage detection circuit 4 is being suppressed under minimal state, breaking coil 6a excitation can be made, thus residual current circuit breaker 101 is tripped.
Execution mode 2
Fig. 2 is the circuit diagram of the 3 pole residual current circuit breaker represented in execution mode 2 of the present utility model.
Define with 5 of nominal sensitivity electric current times in IEC60947-2, the content of action in 40ms, but in execution mode 1, owing to driving breaking coil 6a by the 2nd rectification circuit 75 as half-wave rectifying circuit, therefore, according to the difference using phase place, likely make the operate time of tripgear 6 more than 40ms.
The residual current circuit breaker 102 of present embodiment, it is the structure that can make become enough short relative to 40ms the operate time of tripgear 6, as shown in Figure 2, needing the structure of galvanic current pressure in order to tackle tripgear 6, the 3rd rectification circuit 76 as full-wave rectifying circuit will be changed to as the 2nd rectification circuit 75 of half-wave rectifying circuit.Other structure due to identical with execution mode 1, therefore detailed.
In order to drive tripgear 6, supply voltage must be made not produce voltage drop and directly be applied to breaking coil 6a.Therefore, in the 3rd rectification circuit 76, from alternating current circuit 1 side of capacitor voltage-dropping power supply circuit 71, respectively by the anode-side of diode 76a, 76b, 76c be entirely connected, the drain electrode of the cathode side of diode 76a, 76b, 76c with self-extinction of arc type switch element 5 is connected.
In addition, the other end of the anode of diode 76d, 76e, 76f with breaking coil 6a is connected, from alternating current circuit 1 side of capacitor voltage-dropping power supply circuit 71, respectively by the negative electrode of diode 76d, 76e, 76f be entirely connected, thus form full-wave rectifying circuit.Therefore, when switch element 5 conducting of self-extinction of arc type, walk around capacitor voltage-dropping power supply circuit 71, form the circuit of supply power.
According to the present embodiment, have: capacitor voltage-dropping power supply circuit 71, it is connected mutually respectively with each of alternating current circuit 1, is connected in series by resistance and capacitor; 1st rectification circuit 72, it is connected to the back segment of this capacitor voltage-dropping power supply circuit 71; 3rd rectification circuit 76, it is connected with alternating current circuit 1; And self-extinction of arc type switch element 5, it is connected to the back segment of the 3rd rectification circuit 76, make the breaking coil 6a excitation of tripgear 6, one end of self-extinction of arc type switch element 5 is connected with the side of the positive electrode of the 3rd rectification circuit 76, breaking coil 6a is connected with between the negative side and the other end of self-extinction of arc type switch element 5 of the 3rd rectification circuit 76, therefore, electric-leakage detection circuit 4 drives the electric current of self-extinction of arc type switch element 5 to reduce, and can suppress the heating of the power circuit 7 in residual current circuit breaker 102.Further, owing to suppressing the heating of the power circuit 7 in residual current circuit breaker 102, therefore, it is possible to obtain residual current circuit breaker that is small-sized and low price.
In addition, owing to employing the 3rd rectification circuit 76 as 3 phase full-wave rectifying circuits, therefore, supply galvanic current pressure to tripgear 6 all the time, therefore, it is possible to make the disconnection of residual current circuit breaker 102 become enough short operate time compared with the setting 40msec specified in IEC60947-2.
In addition, one end of self-extinction of arc type switch element 5 is connected with the side of the positive electrode of the 3rd rectification circuit 76, breaking coil 6a is connected with between the negative side and the other end of self-extinction of arc type switch element 5 of the 3rd rectification circuit 76, therefore, the reactance value i.e. 2 π fL of breaking coil 6a can be utilized, suppress the surge current flowed into from alternating current circuit 1.
Claims (3)
1. a residual current circuit breaker, it has:
Opening and closing contact, it makes alternating current circuit break-make; Zero phase current transformer, it detects the Zero-phase current of described alternating current circuit; Electric-leakage detection circuit, it is connected with this zero phase current transformer, based on described zero phase current transformer detection signal and detect electric leakage; Tripgear, it is driven by this electric-leakage detection circuit; Concatermer, its respectively with being respectively connected of described alternating current circuit, be connected in series by resistance and capacitor; 1st rectification circuit, it is connected to the back segment of this concatermer, to described electric-leakage detection circuit supply electric power; 2nd rectification circuit, it is connected with described alternating current circuit; And switch element, it is connected to the back segment of the 2nd rectification circuit, makes the breaking coil excitation of described tripgear by being driven by described electric-leakage detection circuit,
The feature of this residual current circuit breaker is,
Described switch element is self-extinction of arc type switch element, and one end of described switch element is connected with described 2nd rectification circuit, between the other end and the negative side of described 2nd rectification circuit of described switch element, be connected with described breaking coil.
2. residual current circuit breaker according to claim 1, is characterized in that,
Described 2nd rectification circuit 2 carries out full-wave rectification mutually to certain in 3 phases.
3. residual current circuit breaker according to claim 1, is characterized in that,
Described 2nd rectification circuit carries out full-wave rectification mutually to complete in 3 phases.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-043443 | 2014-03-06 | ||
| JP2014043443A JP6221844B2 (en) | 2014-03-06 | 2014-03-06 | Earth leakage breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204167873U true CN204167873U (en) | 2015-02-18 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410411751.2A Active CN104901273B (en) | 2014-03-06 | 2014-08-20 | Rccb |
| CN201420471757.4U Expired - Fee Related CN204167873U (en) | 2014-03-06 | 2014-08-20 | Residual current circuit breaker |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410411751.2A Active CN104901273B (en) | 2014-03-06 | 2014-08-20 | Rccb |
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| Country | Link |
|---|---|
| JP (1) | JP6221844B2 (en) |
| KR (1) | KR101610484B1 (en) |
| CN (2) | CN104901273B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901273A (en) * | 2014-03-06 | 2015-09-09 | 三菱电机株式会社 | Earth leakage breaker |
| CN111755288A (en) * | 2019-03-29 | 2020-10-09 | 松下知识产权经营株式会社 | Circuit breaker |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6848204B2 (en) * | 2016-04-26 | 2021-03-24 | 三菱電機株式会社 | Circuit breaker |
| CN109167334A (en) * | 2018-09-21 | 2019-01-08 | 王汉禄 | Multi-purpose intelligent breaker |
| KR102083600B1 (en) * | 2018-11-19 | 2020-03-02 | 엘에스산전 주식회사 | Elcb(earth leakage circuit breaker) and control method for the elcb |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3540604B2 (en) * | 1998-05-26 | 2004-07-07 | 三菱電機株式会社 | Earth leakage breaker |
| JP5021399B2 (en) * | 2007-08-31 | 2012-09-05 | 河村電器産業株式会社 | Three-phase earth leakage breaker |
| JP2009070629A (en) * | 2007-09-11 | 2009-04-02 | Kawamura Electric Inc | Three-phase ground-fault circuit interrupter |
| JP5192777B2 (en) * | 2007-11-01 | 2013-05-08 | 河村電器産業株式会社 | 3-phase earth leakage circuit breaker |
| US7965483B2 (en) * | 2008-09-12 | 2011-06-21 | General Electric Company | Electronic trip unit of a circuit breaker |
| KR100919450B1 (en) | 2009-03-20 | 2009-09-29 | 주식회사 대륙 | The circuit braker used seperated power between detection of the electronic leakage and driving tripcoil |
| JP5768741B2 (en) * | 2012-02-29 | 2015-08-26 | 三菱電機株式会社 | Earth leakage breaker |
| JP6221844B2 (en) * | 2014-03-06 | 2017-11-01 | 三菱電機株式会社 | Earth leakage breaker |
-
2014
- 2014-03-06 JP JP2014043443A patent/JP6221844B2/en active Active
- 2014-08-04 KR KR1020140099618A patent/KR101610484B1/en active IP Right Grant
- 2014-08-20 CN CN201410411751.2A patent/CN104901273B/en active Active
- 2014-08-20 CN CN201420471757.4U patent/CN204167873U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901273A (en) * | 2014-03-06 | 2015-09-09 | 三菱电机株式会社 | Earth leakage breaker |
| CN104901273B (en) * | 2014-03-06 | 2018-02-09 | 三菱电机株式会社 | Rccb |
| CN111755288A (en) * | 2019-03-29 | 2020-10-09 | 松下知识产权经营株式会社 | Circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN104901273B (en) | 2018-02-09 |
| KR101610484B1 (en) | 2016-04-07 |
| KR20150105170A (en) | 2015-09-16 |
| CN104901273A (en) | 2015-09-09 |
| JP6221844B2 (en) | 2017-11-01 |
| JP2015170427A (en) | 2015-09-28 |
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