CN102054635B - Leakage breaker - Google Patents
Leakage breaker Download PDFInfo
- Publication number
- CN102054635B CN102054635B CN2010101531654A CN201010153165A CN102054635B CN 102054635 B CN102054635 B CN 102054635B CN 2010101531654 A CN2010101531654 A CN 2010101531654A CN 201010153165 A CN201010153165 A CN 201010153165A CN 102054635 B CN102054635 B CN 102054635B
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- Prior art keywords
- circuit breaker
- phase sequence
- zero phase
- residual current
- current circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000000819 phase cycle Methods 0.000 claims description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 2
- 239000005041 Mylar™ Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers
-
- 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
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention discloses a leakage breaker, which comprises a switch mechanism, an over current tripping mechanism, a zero-phase serial converter, a leakage tripping mechanism and a frame. The switch mechanism drives the opening or the closing of movable contact members of the circuits arranged on the leakage breaker equipped with multiple poles. The over current tripping mechanism detects the over load current and the short-circuit current of the circuits and reacts correspondingly. The zero-phase serial converter detects the leakage current of the circuits.. The leakage tripping mechanism is driven by the output of the zero-phase serial converter. The switch mechanism, the over current tripping mechanism, the zero-phase serial converter and the leakage tripping mechanism are accommodated in the frame. A space part for accommodating the zero-phase serial converter is arranged on the frame separated from the over current tripping mechanism. The zero-phase serial converter is arranged inside the space part in parallel with the circuits.
Description
Technical field
The present invention relates to a kind ofly by the multipole residual current circuit breaker that forms, especially, relate to a kind of configuration structure that is built in the zero phase sequence currenttransformer in residual current circuit breaker.
Background technology
, as existing residual current circuit breaker, has a kind of residual current circuit breaker that is formed by for example 3 utmost points, 12 and 13 as shown in FIG..Figure 12 means the vertical view of the inside of existing residual current circuit breaker.Figure 13 means the profile of existing residual current circuit breaker.
in above-mentioned each figure, the 1st, the housing that is formed by the mold resin, the 2nd, the cover body that is formed by the mold resin, the 3rd, respectively with the fixed contact therefor of the power supply side terminal plate 3a one of each utmost point, the 4th, the movable contact that carries out switch motion with respect to the fixed contact therefor 3 of each utmost point, the 5th, the movable contact 4 of each utmost point is carried out the switching mechanism of switch drive, the 6th, the overcurrent trip mechanism that overload electric current and the short circuit current of each utmost point detected and move, the 7th, with the fixed conductor of the end connection of the heater conductor 6a of the overcurrent trip mechanism 6 of the movable contact 4 of each utmost point and each utmost point, the 8th, the load side end daughter board of each utmost point, the 9th, the Primary Conductor that is formed with load side end daughter board 8 of each utmost point, the 10th, zero phase sequence currenttransformer, the 12nd, the leakage tripping mechanism that the output of reception amplifier (not shown) is gone forward side by side and taken action and do, the 13rd, contain the door shape housing of the secondary of zero phase sequence currenttransformer 10 being exported the amplifier (not shown) that amplifies.(with reference to patent documentation 1).
Action to the existing residual current circuit breaker of formation as noted above describes.Electric current, flows to load side end daughter board 8 through fixed contact therefor 3, movable contact 4, fixed conductor 7, heater conductor 6a and Primary Conductor 9 from power supply side terminal plate 3a.
, as overcurrent trip mechanism 6, have electronic type, the moving electromagnetic type of heat, complete electromagnetic type etc., but in Figure 12 and Figure 13, show the situation of the overcurrent trip mechanism 6 that uses the moving electromagnetic type of heat.
State in the use in the residual current circuit breaker of overcurrent trip mechanism 6 of the moving electromagnetic type of heat, if in each polar circuit of residual current circuit breaker by overload electric current or short circuit current, due to the heating of the heater conductor 6a of overcurrent trip mechanism 6, make bimetal piece 6c crooked, perhaps armature 6b is adsorbed on fixed iron core 6d, thereby the chain shot (not shown) of switching mechanism 5 is tripped, movable contact 4 is separated.
In addition, if because of electric leakage, flow through earth current, the output that detects the zero phase sequence currenttransformer 10 of this electric current is exaggerated device (not shown) amplifies, and utilizes leakage tripping mechanism 12 that movable contact 4 is separated.
Patent documentation 1: Japanese kokai publication hei 3-233824 communique
Summary of the invention
Above-mentioned existing residual current circuit breaker constitutes, and between overcurrent trip mechanism 6 and load side end daughter board 8, space is set, and in this space, zero phase sequence currenttransformer 10 is configured on direction with circuit direction quadrature.Therefore, have following problem, that is, residual current circuit breaker from power supply side terminal plate 3a to load side end daughter board 8 till the length dimension of circuit direction become large.
In addition, compare with the length dimension of the circuit direction of the Inturruptor for sub-line that there is no built-in zero phase sequence currenttransformer 10, the length of the circuit direction of above-mentioned existing residual current circuit breaker is also longer, there is following problem, that is, can't be applicable to the dimensional requirement identical with the length dimension of the circuit direction of Inturruptor for sub-line.In addition, also there is the restricted problem of the degree of freedom of the configuration design of various circuit breakers.
In addition, if form the residual current circuit breaker of low specification (for example, being less than or equal to 10A), the overload electric current is also less, must make the overcurrent trip mechanism action with this less electric current.Therefore, there is the following known fact, namely, for the bimetal piece section that is responsible for anti-tripping operation in limited time zone, if only pass through to the bimetal piece direct-electrifying, can't guarantee to make the overcurrent trip mechanism necessary amount of bow that trips, must utilize heater to cover the periphery of bimetal piece, and guarantee amount of bow.In addition,, for the coil portion of being responsible for the immediate trip zone, must guarantee to make the overcurrent trip mechanism necessary attraction that trips, the immediate trip mechanism that must adopt plunger piston type with lower electric current.Therefore, the overall dimension of overcurrent trip mechanism is compared increase with the high standard product, has following problems, that is, be difficult to the zero phase sequence currenttransformer that carries out detection of electrical leakage is accommodated with the space identical with the high standard product.
The present invention proposes in order to solve above-mentioned problem, and its purpose is, a kind of residual current circuit breaker that can utilize simple structure that the length dimension of circuit direction is reduced is provided.
Residual current circuit breaker involved in the present invention has: switching mechanism, and it carries out switch drive to the movable contact on each polar circuit that is separately positioned on the residual current circuit breaker with a plurality of utmost points; Overcurrent trip mechanism, it detects the overload electric current of described each polar circuit and short circuit current and moves; Zero phase sequence currenttransformer, it detects the leakage current of described each polar circuit; Leakage tripping mechanism, its output by described zero phase sequence currenttransformer drives; And framework, it accommodates described switching mechanism, described overcurrent trip mechanism, described zero phase sequence currenttransformer, described leakage tripping mechanism, wherein, on the alternate described framework that is positioned at described overcurrent trip mechanism, be provided for accommodating the spatial portion of described zero phase sequence currenttransformer, in described spatial portion, with described circuit direction, accommodate abreast described zero phase sequence currenttransformer.
The effect of invention
, according to residual current circuit breaker involved in the present invention, can obtain utilizing simple structure with the residual current circuit breaker of the size reduction of length direction.
Description of drawings
Fig. 1 means the vertical view of the state after the cover body of the residual current circuit breaker that embodiments of the present invention 1 are related is pulled down.
Fig. 2 is the II-II line profile in Fig. 1 of the related residual current circuit breaker of embodiments of the present invention 1.
What Fig. 3 meaned state after the cover body of the residual current circuit breaker that embodiments of the present invention 1 are related is pulled down wants section's vertical view.
Fig. 4 means the oblique view to the state before accommodating in framework such as overcurrent trip mechanism in the residual current circuit breaker that embodiments of the present invention 1 are related and zero phase sequence currenttransformer.
Fig. 5 means the oblique view of the state after overcurrent trip mechanism in the residual current circuit breaker that embodiments of the present invention 1 are related and zero phase sequence currenttransformer etc. are housed in framework.
Fig. 6 means that zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related is to the oblique view of the state before accommodating in framework.
Fig. 7 means the oblique view of the state after the zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related is housed in framework.
Fig. 8 means that zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related wants section's profile to the state before accommodating in framework.
What Fig. 9 meaned state after the zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related is housed in framework wants section's profile.
Figure 10 means the front view of the zero phase sequence currenttransformer in the related residual current circuit breaker of embodiments of the present invention 1.
Figure 11 is the XI-XI line profile in Figure 10 of the related residual current circuit breaker of embodiments of the present invention 1.
Figure 12 means the vertical view of the state after the cover body of existing residual current circuit breaker is pulled down.
Figure 13 is the profile of existing residual current circuit breaker.
Embodiment
Below, based on Fig. 1 to Figure 11, embodiments of the present invention 1 are described.Fig. 1 means the vertical view of the state after the cover body of the residual current circuit breaker that embodiments of the present invention 1 are related is pulled down.Fig. 2 is the II-II line profile in Fig. 1 of the related residual current circuit breaker of embodiments of the present invention 1.What Fig. 3 meaned state after the cover body of the residual current circuit breaker that embodiments of the present invention 1 are related is pulled down wants section's vertical view.Fig. 4 means the oblique view to the state before accommodating in framework such as overcurrent trip mechanism in the residual current circuit breaker that embodiments of the present invention 1 are related and zero phase sequence currenttransformer.Fig. 5 means the oblique view of the state after overcurrent trip mechanism in the residual current circuit breaker that embodiments of the present invention 1 are related and zero phase sequence currenttransformer etc. are housed in framework.
Fig. 6 means that zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related is to the oblique view of the state before accommodating in framework.Fig. 7 means the oblique view of the state after the zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related is housed in framework.Fig. 8 means that zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related wants section's profile to the state before accommodating in framework.What Fig. 9 meaned state after the zero phase sequence currenttransformer in the residual current circuit breaker that embodiments of the present invention 1 are related is housed in framework wants section's profile.Figure 10 means the front view of the zero phase sequence currenttransformer in the related residual current circuit breaker of embodiments of the present invention 1.Figure 11 is the XI-XI line profile in Figure 10 of the related residual current circuit breaker of embodiments of the present invention 1.
In above-mentioned each figure, the 51st, the framework of the residual current circuit breaker that consists of for example 3 utmost points, formed by mold resins such as phenolic resins or mylar.The 52nd, the power supply side terminal plate of each utmost point, the 53rd, with the fixed contact therefor of power supply side terminal plate 52 electrical connection of each utmost point, the 54th, the fixed contact of each fixed contact therefor 53, the 55th, have the movable contact of the moving contact 56 relative with this fixed contact 54, the 57th, arc-extinction device, it will produce between fixed contact 54 and moving contact 56 electric arc extinguishing arc, the 58th, the movable contact 55 of each utmost point is carried out the switching mechanism of switch drive, the 59th, the operating grip of switching mechanism 58.
The 60th, detect the overload electric current of each utmost point and short circuit current and the overcurrent trip mechanism of moving, the 61st, the load side end daughter board of each utmost point, the 62nd, the Primary Conductor that is connected integratedly with the load side end daughter board 61 of each utmost point respectively, 63 are arranged on the spatial portion on any one alternate framework 51 in overcurrent trip mechanism 60 alternate of each utmost point, the 64th, be housed in abreast zero phase sequence currenttransformer in this spatial portion 63 with the circuit direction, have the effect of the phase insulation of overcurrent trip mechanism 60.In addition, as Primary Conductor 62, if use the higher pliability copper twisted wire of flexibility, the distribution assembleability of Primary Conductor 62 can variation yet.
The 65th, interphase insulator, it is arranged on the alternate of the overcurrent trip mechanism 60 of not accommodating zero phase sequence currenttransformer 64 sides, the 66th, leakage tripping mechanism, it utilizes amplifier (not shown) output that zero phase sequence currenttransformer 64 is detected to amplify, and receive this output and move, the 67th, the leakage tripping bar of leakage tripping mechanism 66, the 68th, the switching mechanism trip(ping) bar of switching mechanism 58.
The 69th, the power supply side terminal pedestal, the 70th, the load side terminal pedestal, the 71st, accommodate the resettlement section of overcurrent trip mechanism 60.
In addition, overcurrent trip mechanism 60 consists of coil portion 60a, the 60b of bimetal piece section, coil portion trip portion 60c and the trip portion 60d of bimetal piece section.
In addition, zero phase sequence currenttransformer 64 consists of following part, that is: 64a unshakable in one's determination; Winding wire 64b, it is wound on the periphery of this iron core 64a; And mold housing 64c, it constitutes and utilizes the mold resin to carry out mold and form outline the periphery of 64a unshakable in one's determination and winding wire 64b, and this zero phase sequence currenttransformer 64 is formed for inserting the patchhole 64d of Primary Conductor 62 at central portion.
And, at the peripheral part of the mold housing 64c of zero phase sequence currenttransformer 64, raised body 64e is set, on the spatial portion 63 that is arranged on framework 51, the concavity section 63a chimeric with raised body 64e is set.
In addition,, on the top of the mold housing 64c of zero phase sequence currenttransformer 64, arrange and separate wall body 64f.
Below, action is described.By with the circuit direction, abreast zero phase sequence currenttransformer 64 being housed in the overcurrent trip mechanism 60 that is arranged at each utmost point alternate in spatial portion 63 on any alternate framework 51, do not need as above-mentioned existing residual current circuit breaker, between overcurrent trip mechanism 6 and load side end daughter board 8, be provided for zero phase sequence currenttransformer 10 is configured in space on direction with circuit direction quadrature, can with this space correspondingly, with residual current circuit breaker from power supply side terminal plate 52 to load side end daughter board 61 till the length dimension of circuit direction reduce.Therefore, can realize the miniaturization of residual current circuit breaker.
In addition, due to the space that also can not arrange between overcurrent trip mechanism 60 and load side end daughter board 61, thereby the length dimension of circuit direction can be reduced, so can form the size identical with the length dimension of the circuit direction of the Inturruptor for sub-line that there is no built-in zero phase sequence currenttransformer, and reach following effect, that is, be applicable to the dimensional requirement identical with the length dimension of the circuit direction of Inturruptor for sub-line, and increase the degree of freedom of the configuration design of various circuit breakers.
In addition, because zero phase sequence currenttransformer 64 consists of following part, that is: 64a unshakable in one's determination; Winding wire 64b, it is wound on the periphery of this iron core 64a; And mold housing 64c, it constitutes and utilizes the resin such as the mold such as phenolic resins or mylar to carry out mold and form outline the periphery of 64a unshakable in one's determination and winding wire 64b, so can insulate to the alternate of overcurrent trip mechanism 60 that contains zero phase sequence currenttransformer 64.
In addition, peripheral part by the mold housing 64c at zero phase sequence currenttransformer 64 arranges raised body 64e, the concavity section 63a chimeric with raised body 64e is set on the spatial portion 63 that is arranged at framework 51, make raised body 64e and the 63a of this concavity section on the peripheral part that is arranged on mold housing 64c chimeric, thus, the creepage distance that insulate can be obtained significantly, insulation characterisitic can be further improved.
In addition, because the top of the mold housing 64c at zero phase sequence currenttransformer 64 arranges, separate wall body 64f,, so can obtain significantly the insulation creepage distance on the top of zero phase sequence currenttransformer 64, can further improve insulation characterisitic.
In addition, residual current circuit breaker in above-mentioned execution mode 1, recorded and narrated the situation of the overcurrent trip mechanism 60 that uses the moving electromagnetic type of heat, but be not limited thereto, also can be applied to use electronic type, the situation of the residual current circuit breaker of the overcurrent trip mechanisms such as electromagnetic type fully, and reach the effect same with above-mentioned execution mode 1.
In addition, residual current circuit breaker in above-mentioned execution mode 1, recorded and narrated the situation of the residual current circuit breaker that consists of for example 3 utmost points, but be not limited thereto, also can be applied to the situation of the residual current circuit breaker that is formed by 2 utmost points or 4 utmost points, and reach the effect same with above-mentioned execution mode 1.
Industrial applicibility
The present invention is fit to the circuit breaker that realization can utilize simple structure that the length dimension of circuit direction is reduced.
Claims (4)
1. residual current circuit breaker, it has:
Switching mechanism, it carries out switch drive to the movable contact on each polar circuit that is separately positioned on the residual current circuit breaker with a plurality of utmost points; Overcurrent trip mechanism, it detects the overload electric current of described each polar circuit and short circuit current and moves; Zero phase sequence currenttransformer, it detects the leakage current of described each polar circuit; Leakage tripping mechanism, its output by described zero phase sequence currenttransformer drives; And framework, it accommodates described switching mechanism, described overcurrent trip mechanism, described zero phase sequence currenttransformer, described leakage tripping mechanism,
It is characterized in that,
On the alternate described framework that is positioned at described overcurrent trip mechanism, be provided for accommodating the spatial portion of described zero phase sequence currenttransformer, in described spatial portion, with described circuit direction, accommodate abreast described zero phase sequence currenttransformer.
2. residual current circuit breaker as claimed in claim 1, is characterized in that,
Described zero phase sequence currenttransformer consists of following part, that is: iron core; Winding wire, it is wound on the periphery of described iron core; And the mold housing, it constitutes and utilizes the mold resin to carry out mold and form outline the periphery of described iron core and described winding wire.
3. residual current circuit breaker as claimed in claim 2, is characterized in that,
Peripheral part at described mold housing arranges raised body, in described spatial portion setting and the chimeric concavity section of described raised body.
4. residual current circuit breaker as claimed in claim 2 or claim 3, is characterized in that,
On the top of described mold housing, the separation wall body is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-254148 | 2009-11-05 | ||
| JP2009254148A JP5517566B2 (en) | 2009-11-05 | 2009-11-05 | Earth leakage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102054635A CN102054635A (en) | 2011-05-11 |
| CN102054635B true CN102054635B (en) | 2013-11-20 |
Family
ID=43958840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101531654A Active CN102054635B (en) | 2009-11-05 | 2010-04-20 | Leakage breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5517566B2 (en) |
| KR (1) | KR101106915B1 (en) |
| CN (1) | CN102054635B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6157390B2 (en) * | 2014-03-20 | 2017-07-05 | 三菱電機株式会社 | Earth leakage breaker |
| KR102508199B1 (en) * | 2020-12-30 | 2023-03-09 | 엘에스일렉트릭(주) | Manual Motor Starter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581396A (en) * | 2003-07-31 | 2005-02-16 | 富士电机机器制御株式会社 | Leakage breaker |
| CN1841616A (en) * | 2005-03-29 | 2006-10-04 | 三菱电机株式会社 | Residual current circuit breaker |
| JP4037094B2 (en) * | 2001-11-29 | 2008-01-23 | 三菱電機株式会社 | Earth leakage breaker |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58169751A (en) * | 1982-03-30 | 1983-10-06 | 東芝ライテック株式会社 | Circuit breaker |
| JP3140842B2 (en) * | 1992-06-26 | 2001-03-05 | 松下電工株式会社 | Circuit breaker |
| JPH06111708A (en) * | 1992-09-25 | 1994-04-22 | Toshiba Corp | Earth leakage breaker |
| JP3365521B2 (en) * | 1993-08-10 | 2003-01-14 | 富士電機株式会社 | Zero-phase current transformer |
| KR100446782B1 (en) * | 2002-09-09 | 2004-09-01 | 엘지전자 주식회사 | Scroll compressor with function of vacuum protection |
| KR200422657Y1 (en) | 2006-04-17 | 2006-07-31 | 한국 전기안전공사 | A circuit breaker possess protection covers |
| JP4994820B2 (en) * | 2006-12-14 | 2012-08-08 | 河村電器産業株式会社 | Circuit breaker |
-
2009
- 2009-11-05 JP JP2009254148A patent/JP5517566B2/en active Active
-
2010
- 2010-04-20 CN CN2010101531654A patent/CN102054635B/en active Active
- 2010-09-08 KR KR1020100087864A patent/KR101106915B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4037094B2 (en) * | 2001-11-29 | 2008-01-23 | 三菱電機株式会社 | Earth leakage breaker |
| CN1581396A (en) * | 2003-07-31 | 2005-02-16 | 富士电机机器制御株式会社 | Leakage breaker |
| CN1841616A (en) * | 2005-03-29 | 2006-10-04 | 三菱电机株式会社 | Residual current circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5517566B2 (en) | 2014-06-11 |
| KR101106915B1 (en) | 2012-01-25 |
| CN102054635A (en) | 2011-05-11 |
| KR20110049656A (en) | 2011-05-12 |
| JP2011100606A (en) | 2011-05-19 |
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