CN103843101B - Residual current circuit breaker - Google Patents
Residual current circuit breaker Download PDFInfo
- Publication number
- CN103843101B CN103843101B CN201280048571.1A CN201280048571A CN103843101B CN 103843101 B CN103843101 B CN 103843101B CN 201280048571 A CN201280048571 A CN 201280048571A CN 103843101 B CN103843101 B CN 103843101B
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- CN
- China
- Prior art keywords
- base plate
- printed base
- circuit
- contact
- button
- 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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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
- H01H83/04—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 with testing means for indicating the ability of the switch or relay to function properly
-
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
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- Breakers (AREA)
Abstract
Residual current circuit breaker, it is assembled with main power circuit contact, contact closing mechanism, the zero phase current transformer (19) being plugged in main power circuit, leakage tripping device (21), arc-extinction device (18), the printed base plate (22) of circuit parts being equipped with detection of electrical leakage circuit and leakage tests circuit and button formula test switchboard (25) being connected with leakage tests circuit in box body (12). The internal element (29) being configured with printed base plate (22) in inside is accommodated in box body (12), the contact of the arcing gas that internal element (29) shielding is produced by arc-extinction device (18) and printed base plate (22).
Description
Technical field
The present invention relates to the residual current circuit breaker with leakage tests circuit.
Background technology
As residual current circuit breaker, the such as device of known patent document 1.
The button formula test switchboard etc. that the residual current circuit breaker of this patent documentation 1 is accommodated with main power circuit contact in box main body, contact closing mechanism, the zero phase current transformer being plugged in main power circuit, leakage tripping device, arc-extinction device, the printed base plate of circuit parts that is equipped with detection of electrical leakage circuit and leakage tests circuit are connected with leakage tests circuit.
Fig. 7 represents the peripheral construction of the button formula test switchboard of the residual current circuit breaker recorded in patent documentation 1, is placed with printed base plate 2 on the top of zero phase current transformer 1, is configured with the lid 3 of box main body on the top of this printed base plate 2. In addition, it is positioned at the bottom of printed base plate 2 and it is configured with leakage tripping device 4 in parallel with zero phase current transformer 1.
In addition, test pin terminal is given prominence to by the one of zero phase current transformer 1 from the upper surface of printed base plate 2, these stationary contact 6a, 6b that test pin terminal becomes one pair of test switchboard 5. And, being configured with at lid 3 can the button 8 of test switchboard 5 that retreats upward of the utilization recovery spring 7 of movement downwards, further, the lower end of this button 8 be fixed with by button 8 movement downwards and with the moving contact 9 of pair of fixed contacts 6a, 6b bridge joint.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2000-3660 publication (Fig. 1��Fig. 5).
Summary of the invention
The problem that invention to be solved
But, in the residual current circuit breaker of above-mentioned patent documentation 1, grounding current is flow through at main power circuit, the electric arc produced when contact closing mechanism carries out open circuit action is by arc-extinction device extinguishing arc, but there is not the shield member shielding the arcing gas produced by arc-extinction device and going to printed base plate 2 between the printed base plate in box main body 2 and arc-extinction device. Therefore, when the carbon black etc. comprised in the arcing gas produced by arc-extinction device is attached to the circuit of printed base plate 2, the insulating property of printed base plate 2 may decline.
So, it is an object of the invention to provide a kind of by preventing the contact with arcing gas, it is possible to improve the residual current circuit breaker of the insulating property of printed base plate.
For solving the technical scheme of problem
In order to reach above-mentioned purpose, the residual current circuit breaker of an embodiment of the invention, main power circuit contact it is assembled with in box body, contact closing mechanism, it is plugged in zero phase current transformer of main power circuit, leakage tripping device, arc-extinction device, the printed base plate being equipped with the circuit parts of detection of electrical leakage circuit and leakage tests circuit and the button formula test switchboard being connected with above-mentioned leakage tests circuit, the internal element being configured with above-mentioned printed base plate in inside is accommodated in above-mentioned box body, the contact of the arcing gas that the shielding of above-mentioned internal element is produced by above-mentioned arc-extinction device and above-mentioned printed base plate.
Residual current circuit breaker according to this enforcement mode, the carbon black that the arcing gas produced by arc-extinction device comprises can not be attached to the circuit of printed base plate.
In addition, in the residual current circuit breaker of an embodiment of the invention, above-mentioned internal element comprises: the unit box covering the one side side of above-mentioned printed base plate the another side side opening at this printed base plate; The unit cover of the opening edge being detachably sticked in this unit box will close in unit, above-mentioned button formula test switchboard comprises: the stationary contact that the another side at the above-mentioned printed base plate being configured in said units box is arranged; With moving contact that arrange on the button being configured at said units lid, that can be moved to above-mentioned stationary contact by the pressing action of this button.
Residual current circuit breaker according to this enforcement mode, forms button formula test switchboard by printed base plate and its internal element of storage, therefore, it is possible to realize the miniaturization of test switchboard.
In addition, in the residual current circuit breaker of an embodiment of the invention, it is right that above-mentioned stationary contact is provided with one away from each other at the another side of above-mentioned printed base plate, and above-mentioned moving contact is bridge joint between the front end of above-mentioned button is by above-mentioned pair of fixed contacts.
Residual current circuit breaker according to this enforcement mode, even the more small internal element of the relative distance between printed base plate and unit cover, it is also possible to guarantee big insulation distance.
Further, in the residual current circuit breaker of an embodiment of the invention, by the above-mentioned moving contact of bridge joint between above-mentioned pair of fixed contacts be can elasticity distortion conducting plates.
Residual current circuit breaker according to this enforcement mode, though with brute force be pressed into button, moving contact contact with pair of fixed contacts also elasticity be out of shape while bend, pair of fixed contacts can not be applied excessive stress.
Invention effect
Residual current circuit breaker according to the present invention, the inner internal element being configured with printed base plate of storage in box body, the contact of the arcing gas that internal element shielding is produced by arc-extinction device and above-mentioned printed base plate, therefore the carbon black that the arcing gas produced by arc-extinction device comprises can not be attached to the circuit of printed base plate, it is possible to improves the insulating property of printed base plate.
Accompanying drawing explanation
Fig. 1 is the main portion sectional view of the residual current circuit breaker representing the present invention.
Fig. 2 is the schematic circuit of the residual current circuit breaker of the present invention.
Fig. 3 is the stereographic map of the inside representing the residual current circuit breaker after a part for the box body of the residual current circuit breaker of the present invention being unloaded.
Fig. 4 is the figure representing the state after the unit cover of internal element being unloaded in the device of Fig. 3.
Fig. 5 is the figure of the standby state of the button formula test switchboard representing the present invention.
Fig. 6 is the figure of the state that the stationary contact of the button formula test switchboard representing the present invention contacts with moving contact.
Fig. 7 is the figure of the structure of the button formula test switchboard representing existing residual current circuit breaker.
Embodiment
Referring to accompanying drawing, the mode for implementing the present invention (hereinafter referred to as enforcement mode) is described in detail.
Fig. 1 is the main portion sectional view of the residual current circuit breaker representing an embodiment of the invention, Fig. 2 is the schematic circuit of the residual current circuit breaker that is implemented mode, Fig. 3 is the stereographic map of the inside representing the residual current circuit breaker after being unloaded by the lid of main body box, and Fig. 4 is the figure representing the state that the unit cover of the unit by being accommodated in main body box unloads.
The residual current circuit breaker of present embodiment, as shown in Figure 1, is assembled with: the main circuit terminal 13 of power supply side in the main body box 12 comprising matrix 10 and lid 11; The main circuit terminal 14 of load-side; Form stationary contact 15 and the moving contact 16 of main power circuit contact;With the operation handle 17 that closing mechanism (not shown) links; The arc-extinction device 18 of electric arc extinguishing arc that will produce between the contact of stationary contact 15 and moving contact 16 when carrying out open circuit action by closing mechanism; Zero phase current transformer 19; Overcurrent trip device 20(is with reference to Fig. 2) and leakage tripping device 21.
In addition, the symbol 22 of Fig. 2 is the printed base plate of the circuit parts being equipped with detection of electrical leakage circuit 23 and leakage tests circuit 24, and the leakage tests circuit 24 being equipped on this printed base plate 22 has test switchboard 25 and current limliting resistance 26.
The test switchboard 25 of Fig. 2 comprises: pair of fixed contacts 27a, 27b and the moving contact 28 by the movement of button 35 and pair of contact 27a, 27b bridge joint.
, as shown in Figure 3, it is accommodated with, on the top of zero phase current transformer 19 of the inside of main body box 12, the internal element 29 formed by megohmites such as synthetic resins materials herein.
This internal element 29 comprises: the unit box 30 keeping printed base plate 22; And it is relative with the upper surface of printed base plate 22 and be sticked in the unit cover 31 of the opening edge of unit box 30 with freely loading and unloading.
Unit cover 30 comprises: as shown in Figure 4, the side portion next door 30a��30e surrounding the circumference of printed base plate 22 and formed; Shown in Fig. 5, the bottom partition wall 30f��30h formed at the portion integral of side portion next door 30c��30e in the way of only upper opening, printed base plate 22 is to the top meeting and being bearing in bottom partition wall 30f.
As shown in Figure 5, at the upper surface of printed base plate 22, separate predetermined distance from the pair of pin terminal of zero phase current transformer 19 extraction outstanding to unit cover 31. These pair of pin terminals are the pair of fixed contacts 27a, the 27b that form above-mentioned test switchboard 25.
As shown in Figure 5, in the unit cover 31 that the opening edge card with unit box 30 closes, it is formed with button maintaining part 31a in the position corresponding with the button inserting hole 11a being formed at lid 11. Button maintaining part 31a is the position of the tubular being connected up and down, and in the button inserting hole 11a of this button maintaining part 31a with lid 11, the button 35 forming above-mentioned test switchboard 25 is can install in the way of moving to printed base plate 22.
In the end of the button 35 outstanding from the lower openings portion of button maintaining part 31a, be fixed with the pair of fixed contacts 27a with printed base plate 22,27b relative can free elasticity distortion conducting plates, this conducting plates is the moving contact 28 forming above-mentioned test switchboard 25.
In addition, the button 35 being arranged in button maintaining part 31a and button inserting hole 11a, by volume spring direction of principal axis each other consistent, the first roll spring 32 that is configured between moving contact 28 and unit cover 31 and the spring power of volume Two spring 33 being configured between unit cover 31 and button 35, exerted a force to the direction left from pair of fixed contacts 27a, 27b, therefore, the moving contact 28 of stand-by station is to be kept to the state connect with the lower surface of unit cover 31.
Distance (insulation distance) between the moving contact 28 of this standby state and pair of fixed contacts 27a, 27b is set as H1, H2.
In addition, the box body of the present invention is corresponding with main body box 12.
The action of the residual current circuit breaker of present embodiment is then described.
When leakage tests, when resisting the elastic force pressing button 35 of first roll spring 32 and volume Two spring 33, as shown in Figure 6, moving contact 28 moves downwards together with button 35, by bridge joint between pair of fixed contacts 27a, 27b, the leakage tests circuit 24 shown in Fig. 2 is made to become switch-on regime.
Thus, flowing through electric leakage analog current at zero phase current transformer 19, leakage tripping device 21 is exported and action by two times of zero phase current transformer 19 be accompanied by this, and makes residual current circuit breaker carry out open circuit action, and stationary contact 15 and the moving contact 16 of main power circuit contact are opened.
Herein, even if being pressed into button 35 with brute force, the moving contact 28 contacted with pair of fixed contacts 27a, 27b also flexure while elasticity is out of shape, therefore can not apply excessive stress to pair of fixed contacts 27a, 27b.
In addition, when flowing through the overcurrent of short circuit circuit or overload electric current between the main circuit terminal 13 and the main circuit terminal 14 of load-side of power supply side, stationary contact 15 and moving contact 16 are opened, and simultaneously produce electric arc between the contact of stationary contact 15 and moving contact 16. The grid contact of this electric arc and arc-extinction device 18 and be cut off, cool, realize extinguishing arc early.
Herein, the printed base plate 22 of the inside being configured in main body box 12 is accommodated in the internal element 29 comprising unit box 30 and unit cover 31 with airtight state, does not therefore contact with the arcing gas produced by arc-extinction device 18.
The effect of the residual current circuit breaker of present embodiment is then described.
The residual current circuit breaker of present embodiment, in the inside of main body box 12, receives printed base plate 22 with airtight state in internal element 29, and the carbon black contained in the arcing gas therefore produced by arc-extinction device 18 can not be attached to the circuit of printed base plate 22. Therefore, it is possible to improve the insulating property of printed base plate.
In addition, the test switchboard 25 of leakage tests circuit 24 can adopt following structure: printed base plate 22 is provided with pair of fixed contacts 27a, 27b, unit cover 31 side of the internal element 29 of this printed base plate 22 of storage is provided with moving contact 28, therefore, it is possible to realize the miniaturization of test switchboard 25.
And, to arrange pair of fixed contacts 27a, the 27b of printed base plate 22 in the way of be respectively arranged with the insulation distance of H1, H2 with the moving contact 28 being arranged at unit cover 31 side, even the more small internal element 29 of the relative distance therefore between printed base plate 22 and unit cover 31, it is also possible to guarantee the big insulation distance of H1+H2.
Further, even if powerful press-in button 35, contact with pair of fixed contacts 27a, 27b moving contact 28 also elasticity be out of shape while flexure, pair of fixed contacts 27a, 27b can not be applied excessive stress, therefore, it is possible to improve test switchboard 25 weather resistance.
Industrial utilizability
As mentioned above, it is necessary, the residual current circuit breaker of the present invention is by preventing the contact with arcing gas, the insulating property for raising printed base plate are useful.
Description of reference numerals
10 ... matrix; 11 ... lid; 11a ... button inserting hole; 12 ... main body box; 13 ... the main circuit terminal of power supply side; 14 ... the main circuit terminal of load-side; 15 ... stationary contact; 16 ... moving contact; 17 ... operation handle; 18 ... arc-extinction device; 19 ... zero phase current transformer; 20 ... overcurrent trip device; 21 ... leakage tripping device; 22 ... printed base plate; 23 ... detection of electrical leakage circuit; 24 ... leakage tests circuit; 25 ... test switchboard; 26 ... current limliting resistance; 27a, 27b ... stationary contact; 28 ... moving contact; 29 ... internal element; 30 ... unit box; 30a��30e ... side portion next door; 30f��30h ... bottom partition wall; 31 ... unit cover;31a ... button maintaining part; 32 ... first roll spring; 33 ... volume Two spring; 35 ... button.
Claims (2)
1. a residual current circuit breaker, it is characterised in that:
Main power circuit contact, contact closing mechanism, the zero phase current transformer being plugged in main power circuit, leakage tripping device, arc-extinction device, the printed base plate of circuit parts being equipped with detection of electrical leakage circuit and leakage tests circuit and the button formula test switchboard being connected with described leakage tests circuit it is assembled with in box body
The internal element being configured with described printed base plate in inside is accommodated in described box body, the contact of the arcing gas that the shielding of described internal element is produced by described arc-extinction device and described printed base plate,
Described internal element comprises: the unit box covering the one side side of described printed base plate the another side side opening at this printed base plate; The unit cover of the opening edge being detachably sticked in this unit box will close in unit,
Described button formula test switchboard comprises: pair of fixed contacts that the another side at the described printed base plate being configured in described unit box is arranged away from each other, that be positioned at described internal element; With the moving contact being positioned at described internal element, described moving contact is arranged on the front end of the button being configured at described unit cover, can be moved to described stationary contact by the pressing action of described button, in the standby state and there is between described pair of fixed contacts insulation distance respectively, and when described button is pressed by bridge joint between described pair of fixed contacts.
2. residual current circuit breaker as claimed in claim 1, it is characterised in that:
By the described moving contact of bridge joint between described pair of fixed contacts be can elasticity distortion conducting plates.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011249402A JP5866993B2 (en) | 2011-11-15 | 2011-11-15 | Earth leakage breaker |
| JP2011-249402 | 2011-11-15 | ||
| PCT/JP2012/006583 WO2013073103A1 (en) | 2011-11-15 | 2012-10-15 | Earth-leakage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103843101A CN103843101A (en) | 2014-06-04 |
| CN103843101B true CN103843101B (en) | 2016-06-08 |
Family
ID=48429208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280048571.1A Active CN103843101B (en) | 2011-11-15 | 2012-10-15 | Residual current circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5866993B2 (en) |
| CN (1) | CN103843101B (en) |
| WO (1) | WO2013073103A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702529B (en) * | 2016-04-28 | 2018-08-28 | 德力西电气有限公司 | A kind of breaker leakage function construction of switch and the leakage circuit breakers with it |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252063A (en) * | 2007-02-19 | 2008-08-27 | 富士电机机器制御株式会社 | Leakage tripping device for leakage breaker |
| CN101996827A (en) * | 2009-08-28 | 2011-03-30 | 李文俊 | Leakage protection circuit breaker with arc extinguishing chamber at both poles |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0638325B2 (en) * | 1987-04-15 | 1994-05-18 | 富士電機株式会社 | Zero-phase current transformer unit for earth leakage circuit breaker |
| JP3344059B2 (en) * | 1994-02-28 | 2002-11-11 | 松下電工株式会社 | Circuit breaker |
| JP2992448B2 (en) * | 1994-11-15 | 1999-12-20 | 松下電工株式会社 | Earth leakage breaker |
| JP3794451B2 (en) * | 1998-06-15 | 2006-07-05 | 富士電機機器制御株式会社 | Earth leakage breaker |
| JP3924963B2 (en) * | 1998-11-04 | 2007-06-06 | 富士電機機器制御株式会社 | Earth leakage breaker |
| JP4154860B2 (en) * | 2001-01-26 | 2008-09-24 | 富士電機機器制御株式会社 | Electric leakage detection circuit module for electric leakage breaker and method of manufacturing the same |
| JP4036317B2 (en) * | 2001-10-22 | 2008-01-23 | 河村電器産業株式会社 | Tracking breaker |
-
2011
- 2011-11-15 JP JP2011249402A patent/JP5866993B2/en active Active
-
2012
- 2012-10-15 CN CN201280048571.1A patent/CN103843101B/en active Active
- 2012-10-15 WO PCT/JP2012/006583 patent/WO2013073103A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252063A (en) * | 2007-02-19 | 2008-08-27 | 富士电机机器制御株式会社 | Leakage tripping device for leakage breaker |
| CN101996827A (en) * | 2009-08-28 | 2011-03-30 | 李文俊 | Leakage protection circuit breaker with arc extinguishing chamber at both poles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5866993B2 (en) | 2016-02-24 |
| CN103843101A (en) | 2014-06-04 |
| WO2013073103A1 (en) | 2013-05-23 |
| JP2013105644A (en) | 2013-05-30 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Saitama Prefecture, Japan Patentee after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo, Japan Patentee before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. |