CN104409292A - Residual current circuit breaker - Google Patents
Residual current circuit breaker Download PDFInfo
- Publication number
- CN104409292A CN104409292A CN201410734188.2A CN201410734188A CN104409292A CN 104409292 A CN104409292 A CN 104409292A CN 201410734188 A CN201410734188 A CN 201410734188A CN 104409292 A CN104409292 A CN 104409292A
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- CN
- China
- Prior art keywords
- electrical connector
- link
- circuit breaker
- linkage
- test
- 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
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- 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
- H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
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- Breakers (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The inventions relates to a residual current circuit breaker which comprises an insulated shell, a linkage device, a tripping device and a test device, wherein the test device comprises a test resistor, a test button and a reset component and further comprises a second electrical connector and a first electrical connector, the first electrical connector is mounted in the insulated shell and is provided with a first connecting end opposite to the second electrical connector and a second connecting end opposite to the linkage device; the linkage device comprises a third electrical connector, and the third electrical connector is in contact with the second connecting end of the first electrical connector to form electrical connection when a handle drives the linkage device to enable the circuit breaker to be closed, and is far way from the second connecting end of the first electrical connector to remove electrical connection when the handle drives the linkage device to trip the circuit breaker; when the second electrical connecter is mounted at the test button, and the test button is pressed, the first electrical connecter is in contact with the test resistor to form electrical connection between the first electrical connecter and the test resistor.
Description
Technical field
The present invention relates to a kind of circuit breaker, be specifically related to a kind of residual current circuit breaker.
Background technology
Residual current circuit breaker forms primarily of zero sequence current mutual inductor, Electronic Control leakage tripping device and the circuit breaker with overload and short-circuit protection.When electric leakage in protected circuit or the person get an electric shock; as long as leakage current reaches design alternative operating current value; the secondary winding of zero sequence current mutual inductor just exports a signal, and makes breaker actuation by leakage tripping device, thus cuts off the electricity supply and play electric leakage and electrical shock protection effect.
In order to whether the creepage protection function detecting residual current circuit breaker normally works; current residual current circuit breaker is all provided with experimental rig usually; the creepage protection function of inspection residual current circuit breaker that can be regular; experimental rig generally includes the test loop be made up of the test button of connecting and test resistance; press test button conduction test loop and can trigger electric leakage signal; if residual current circuit breaker is automatically threaded off and cut off the electricity supply, illustrating that creepage protection function is normal, then illustrating that creepage protection function is not normal as automatically do not threaded off.
Because traditional experiment device is series between power supply and trip gear, once the words trip gear of long-time pressing test button will perform trip action always, cause the electronic component of trip gear to burn out, thus damage whole residual current circuit breaker.
Summary of the invention
For the deficiency that prior art exists, under the object of the present invention is to provide a kind of circuit breaker to be in trip status, experimental rig cannot.
For achieving the above object, the invention provides following technical scheme: comprise insulation crust, the linkage being controlled breaker closing or dropout in insulation shell by handle drives is set, control the trip gear that linkage is threaded off, experimental rig, this experimental rig comprises the test resistance be electrically connected with trip gear, can the test button of opposing insulation shell slippage, the reset assembly of reset test button, it is characterized in that: described experimental rig also comprises the second electrical connector and the first electrical connector, this first electrical connector to be installed in insulation crust and to be provided with first link relative with the second electrical connector and second link relative with linkage, described linkage comprises and to be electrically connected with moving contact and with the 3rd electrical connector of linkage synchronous shift, the 3rd described electrical connector contacts to form with the second link of the first electrical connector when handle drives linkage makes breaker closing and is electrically connected, the second link when handle drives linkage makes circuit breaker tripping away from the first electrical connector removes electrical connection, the second described electrical connector is installed on test button and will contacts the electrical connection of formation first electrical connector and test resistance with the first electrical connector and test resistance respectively when test button is pressed.
By adopting technique scheme, be the second electrical connector, the first electrical connector and the 3rd connector by electrical connector split originally, second electrical connector is for connecting the first electrical connector and test resistance, and the first electrical connector is for connecting the second electrical connector and the 3rd electrical connector, when circuit breaker is trip status, the structure cut off in multistage, guarantee can not cause because electrical connector is single and contacts by mistake and make trip gear continuous firing; Secondly, when circuit breaker is closure state and experimental rig works, the test resistance of experimental rig is once drive trip gear successfully to thread off once, the 3rd electrical connector be installed on linkage will be synchronized with the movement away from the first electrical connector with linkage, the circuit of experimental rig is made to be off-state, namely experimental rig quits work, namely the electronic component avoiding trip gear burns out, thus damages whole residual current circuit breaker, extends the useful life of residual current circuit breaker.
The present invention is set to further: the first described electrical connector is torsion spring, the first described link and the second link are respectively the two ends of torsion spring, the first described link resets towards the second electrical connector, and the second described link resets towards the 3rd electrical connector.
By adopting technique scheme, first electrical connector is torsion spring, its two ends can reset respectively to the second electrical connector and the 3rd electrical connector, fully fitted when experimental rig works the second electrical connector and the 3rd electrical connector in its end, experimental rig is powered and drives trip gear more stable.
The present invention is set to further: be provided with for the sheathed erection column in the first electrical connector center in described insulation crust and carry out spacing limiting plate with the first link and the second link to pairing first link and the second link respectively.
By adopting technique scheme, first link and the second link carry out spacingly coordinating the first link and the automatically reset function of the second link by limiting plate, while limiting the first link and the second link reset scope, torsion spring position is limited, avoid torsion spring to rotate on a large scale causing the first link and the second link not corresponding with the position of the second electrical connector and the 3rd electrical connector, cause the disabler of experimental rig or contact the danger that lock strap comes by mistake.
The present invention is set to further: one end that the second described electrical connector contacts with test resistance is that circular arc is arranged.
By adopting technique scheme, arc-shaped being arranged in end, providing certain pressing force to test resistance to while increasing contact area when the second electrical connector contacts with test resistance the second electrical connector, ensure electrical connection stability.
The present invention is set to further: described reset assembly comprises back-moving spring and is fixedly installed on for installing the spring base of back-moving spring in insulation crust, and this back-moving spring arranges along test button glide direction and is installed with between test button and spring base.
By adopting technique scheme, independent return unit is adopted to reset, instead of reset while being electrically connected by other electrical connectors, even if ensure to occur that deformation also can not affect electrical connection properties after repeated, greatly improve the stability of experimental rig.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the partial perspective view one of the specific embodiment of the invention;
Fig. 2 is the enlarged drawing of A in Fig. 1;
Fig. 3 is the partial perspective view two of the specific embodiment of the invention.
Embodiment
As shown in Figures 1 to 3, the invention discloses a kind of residual current circuit breaker, comprise insulation crust 1, the linkage 2 being controlled breaker closing or dropout in insulation shell 1 by handle drives is set, control the trip gear 3 that linkage 2 is threaded off, experimental rig 4, trip gear is release, this experimental rig 4 comprises the test resistance 41 be electrically connected with trip gear 3, can the test button 42 of opposing insulation shell 1 slippage, the reset assembly 43 of reset test button 42, test resistance 41 also can be replaced by the circuit board of band experiment resistance 41, experimental rig 4 also comprises the second electrical connector 45 and the first electrical connector 44, this first electrical connector 44 to be installed in insulation crust 1 and to be provided with first link 441 relative with the second electrical connector 45 and second link 442 relative with linkage 2, linkage 2 comprises and to be electrically connected with moving contact and with the 3rd electrical connector 22 of linkage 2 synchronous shift, and this linkage is the quadric chain of co-acting lever in circuit breaker and moving contact, this quadric chain comprises the moving contact installing rack 22 installing moving contact, in the specific embodiment of the invention, because moving contact installing rack 22 distance test (DT) button 41 is nearer, therefore this moving contact installing rack is made of metal, namely installing rack torsion spring for resetting on it realizes moving contact and the series connection of the first electrical connector, the installing rack torsion spring of Appropriate application existing structure, also can be other electrical connectors being fixed on moving contact installing rack, certainly, 3rd connector can be installed on other bars in quadric chain and be connected by other end of incoming cables of wire and circuit breaker, 3rd electrical connector 21 contacts to form with the second link 442 of the first electrical connector 44 when handle drives linkage 2 makes breaker closing and is electrically connected, the second link 442 when handle drives linkage 2 makes circuit breaker tripping away from the first electrical connector 44 removes electrical connection, second electrical connector 45 is installed on test button 4 and will contacts the electrical connection of formation first electrical connector 44 with test resistance 41 with the first electrical connector 44 and test resistance 41 respectively when test button 42 is pressed, test resistance 41 can be arranged at any position in insulation crust 1 and be connected with the second electrical connector 45 by other electric-conductors, be the second electrical connector 45 by electrical connector split originally, first electrical connector 44 and the 3rd connector 21, second electrical connector 45 is for connecting the first electrical connector 44 and test resistance 41, and the first electrical connector 44 is for connecting the second electrical connector 45 and the 3rd electrical connector 21, when circuit breaker is trip status, the structure cut off in multistage, guarantee can not cause because electrical connector is single and contacts by mistake and make trip gear continuous firing, secondly, when circuit breaker is closure state and experimental rig 4 works, the test resistance 41 of experimental rig 4 is once drive trip gear 3 successfully to thread off once, the 3rd electrical connector 21 be installed on linkage 2 will be synchronized with the movement away from the first electrical connector 44 with linkage, the circuit of experimental rig 4 is made to be off-state, namely experimental rig 4 quits work, namely the electronic component avoiding trip gear 3 burns out, thus damages whole residual current circuit breaker, extends the useful life of residual current circuit breaker.
First electrical connector 44 is torsion spring, first link 441 and the second link 442 are respectively the two ends of torsion spring, first link 441 resets towards the second electrical connector 45, second link 442 resets towards the 3rd electrical connector 21, first electrical connector 44 is torsion spring, its two ends can reset respectively to the second electrical connector 45 and the 3rd electrical connector 21, fully fitted when experimental rig works the second electrical connector 45 and the 3rd electrical connector 21 in its end, experimental rig 4 is powered and drives trip gear 3 more stable.
Be provided with for the sheathed erection column 11 in the first electrical connector 44 center in insulation crust 1 and carry out spacing limiting plate 12 with the first link 441 and the second link 442 to pairing first link 441 and the second link 442 respectively, first link 441 and the second link 442 carry out spacingly coordinating the first link 441 and the automatically reset function of the second link 442 by limiting plate 12, limit the first link 441 and the second link 442 to reset while scope and limit torsion spring position, avoid torsion spring to rotate on a large scale causing the first link 441 and the second link 442 not corresponding with the position of the second electrical connector 45 and the 3rd electrical connector 21, cause the disabler of experimental rig 4 or contact the next danger of lock strap by mistake.
One end 441 that second electrical connector 45 contacts with test resistance 41 is arranged in circular arc, arc-shaped is arranged in end, there is provided certain pressing force to test resistance 41 to while increasing contact area when the second electrical connector 45 contacts with test resistance 41 second electrical connector 45, ensure electrical connection stability.
Reset assembly 43 comprises back-moving spring 431 and is fixedly installed in insulation crust 1 for installing the spring base 13 of back-moving spring 431, this back-moving spring 431 arranges along test button 42 glide direction and is installed with between test button 42 and spring base 13, independent return unit is adopted to reset, instead of reset while being electrically connected by other electrical connectors, even if ensure to occur that deformation also can not affect electrical connection properties after repeated, greatly improve the stability of experimental rig 4.
Claims (5)
1. a residual current circuit breaker, comprise insulation crust, the linkage being controlled breaker closing or dropout in insulation shell by handle drives is set, control the trip gear that linkage is threaded off, experimental rig, this experimental rig comprises the test resistance be electrically connected with trip gear, can the test button of opposing insulation shell slippage, the reset assembly of reset test button, it is characterized in that: described experimental rig also comprises the second electrical connector and the first electrical connector, this first electrical connector to be installed in insulation crust and to be provided with first link relative with the second electrical connector and second link relative with linkage, described linkage comprises and to be electrically connected with moving contact and with the 3rd electrical connector of linkage synchronous shift, the 3rd described electrical connector contacts to form with the second link of the first electrical connector when handle drives linkage makes breaker closing and is electrically connected, the second link when handle drives linkage makes circuit breaker tripping away from the first electrical connector removes electrical connection, the second described electrical connector is installed on test button and will contacts the electrical connection of formation first electrical connector and test resistance with the first electrical connector and test resistance respectively when test button is pressed.
2. residual current circuit breaker according to claim 1, it is characterized in that: the first described electrical connector is torsion spring, the first described link and the second link are respectively the two ends of torsion spring, the first described link resets towards the second electrical connector, and the second described link resets towards the 3rd electrical connector.
3. residual current circuit breaker according to claim 2, is characterized in that: be provided with for the sheathed erection column in the first electrical connector center in described insulation crust and carry out spacing limiting plate with the first link and the second link to pairing first link and the second link respectively.
4. residual current circuit breaker according to claim 3, is characterized in that: one end that the second described electrical connector contacts with test resistance is that circular arc is arranged.
5. the residual current circuit breaker according to claim 1 or 2 or 3 or 4, it is characterized in that: described reset assembly comprises back-moving spring and is fixedly installed on for installing the spring base of back-moving spring in insulation crust, and this back-moving spring arranges along test button glide direction and is installed with between test button and spring base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734188.2A CN104409292B (en) | 2014-12-05 | 2014-12-05 | Residual current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734188.2A CN104409292B (en) | 2014-12-05 | 2014-12-05 | Residual current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104409292A true CN104409292A (en) | 2015-03-11 |
| CN104409292B CN104409292B (en) | 2017-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410734188.2A Active CN104409292B (en) | 2014-12-05 | 2014-12-05 | Residual current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104409292B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070616A (en) * | 2015-08-05 | 2015-11-18 | 浙江凯发电气股份有限公司 | Energy-saving residual current circuit breaker |
| CN105448608A (en) * | 2015-08-13 | 2016-03-30 | 国家电网公司 | Testing releasing device for circuit breaker, and circuit breaker using the same and operating mechanism |
| CN105510818A (en) * | 2015-12-30 | 2016-04-20 | 三信国际电器上海有限公司 | Breaker and testing device and method thereof |
| CN110391549A (en) * | 2018-04-19 | 2019-10-29 | 辽宁中航信诺科技有限公司 | Airplane power source socket with anti-mis-insertion defencive function |
Citations (7)
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| DE3032826A1 (en) * | 1980-08-30 | 1982-04-15 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Fault current protection switch with a test button for switching on a resistance in a test circuit |
| DD295167A1 (en) * | 1990-06-12 | 1996-02-08 | Max Delbrueck Centrum | Method for producing monoclonal antibodies against sperm-specific antigens in the molecular weight range around 30 km kDa |
| CN101996827A (en) * | 2009-08-28 | 2011-03-30 | 李文俊 | Leakage protection circuit breaker with arc extinguishing chamber at both poles |
| CN102194619A (en) * | 2010-03-16 | 2011-09-21 | 施耐德电器工业公司 | Test device for circuit breaker and circuit breaker with test device |
| CN102818988A (en) * | 2012-01-21 | 2012-12-12 | 三信国际电器上海有限公司 | Testing device system of circuit breaker for earth fault currents or residual currents |
| CN203787366U (en) * | 2013-12-04 | 2014-08-20 | 浙江正泰电器股份有限公司 | Residual current circuit breaker |
| CN204215982U (en) * | 2014-12-05 | 2015-03-18 | 温州力能电器科技有限公司 | Residual current circuit breaker |
-
2014
- 2014-12-05 CN CN201410734188.2A patent/CN104409292B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032826A1 (en) * | 1980-08-30 | 1982-04-15 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Fault current protection switch with a test button for switching on a resistance in a test circuit |
| DD295167A1 (en) * | 1990-06-12 | 1996-02-08 | Max Delbrueck Centrum | Method for producing monoclonal antibodies against sperm-specific antigens in the molecular weight range around 30 km kDa |
| CN101996827A (en) * | 2009-08-28 | 2011-03-30 | 李文俊 | Leakage protection circuit breaker with arc extinguishing chamber at both poles |
| CN102194619A (en) * | 2010-03-16 | 2011-09-21 | 施耐德电器工业公司 | Test device for circuit breaker and circuit breaker with test device |
| CN102818988A (en) * | 2012-01-21 | 2012-12-12 | 三信国际电器上海有限公司 | Testing device system of circuit breaker for earth fault currents or residual currents |
| CN203787366U (en) * | 2013-12-04 | 2014-08-20 | 浙江正泰电器股份有限公司 | Residual current circuit breaker |
| CN204215982U (en) * | 2014-12-05 | 2015-03-18 | 温州力能电器科技有限公司 | Residual current circuit breaker |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070616A (en) * | 2015-08-05 | 2015-11-18 | 浙江凯发电气股份有限公司 | Energy-saving residual current circuit breaker |
| CN105448608A (en) * | 2015-08-13 | 2016-03-30 | 国家电网公司 | Testing releasing device for circuit breaker, and circuit breaker using the same and operating mechanism |
| CN105448608B (en) * | 2015-08-13 | 2019-04-23 | 国家电网公司 | Test tripping devices for circuit breakers and circuit breakers and operating mechanisms using the same |
| CN105510818A (en) * | 2015-12-30 | 2016-04-20 | 三信国际电器上海有限公司 | Breaker and testing device and method thereof |
| CN110391549A (en) * | 2018-04-19 | 2019-10-29 | 辽宁中航信诺科技有限公司 | Airplane power source socket with anti-mis-insertion defencive function |
| CN110391549B (en) * | 2018-04-19 | 2020-11-06 | 辽宁中航信诺科技有限公司 | Aviation power socket with misplug prevention protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104409292B (en) | 2017-02-22 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20160825 Address after: 325000, No. 512, No. fifth, Binhai sixteen Road, Wenzhou economic and Technological Development Zone, Longwan District, Zhejiang, Wenzhou Applicant after: WENZHOU AIKE ELECTRICAL APPLIANCES TECHNOLOGY CO., LTD. Address before: Huameng Plaza No. 2 Station Road, Wenzhou city Zhejiang province 325000 room 2201 East first Applicant before: WENZHOU LINENG ELECTRICAL APPLIANCES TECHNOLOGY CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |