CN102194619B - Test device for circuit breaker and circuit breaker with test device - Google Patents
Test device for circuit breaker and circuit breaker with test device Download PDFInfo
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- CN102194619B CN102194619B CN201010124761.XA CN201010124761A CN102194619B CN 102194619 B CN102194619 B CN 102194619B CN 201010124761 A CN201010124761 A CN 201010124761A CN 102194619 B CN102194619 B CN 102194619B
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Abstract
The invention relates to a test device used for a miniature electronic type leakage circuit breaker and the miniature electronic type leakage circuit breaker with the test device. The test device comprises a test button, a test torsion spring, a connecting conductor, a lever and a test resistor. The device can make coordination action with mechanical components of the circuit breaker. Whatever the state of the test button is, a test loop is cut off after the transmission of a leakage test signal is completed, so that the circuit breaker can be subjected to periodic tests safely even in reverse wiring.
Description
Technical field
The present invention relates to a kind of miniature circuit breaker, particularly, relate to a kind of experimental rig for micro electric minor residual current circuit breaker and there is the micro electric minor residual current circuit breaker of this experimental rig.
Background technology
Along with the development of electric automatization, micro electric minor residual current circuit breaker has become a kind of electrical equipment being widely used in low pressure Terminal Power Distribution System.The effect of residual current circuit breaker is that power frequency supply is carried out to earth leakage protective and overload protection etc.When having people's electric shock or circuit leakage current over power failures such as settings, residual current circuit breaker can produce tripping operation and wait protection to move within the extremely short time, and automatic cut-off power, guarantees personal safety, and prevents the accident that equipment causes because of generation leakage current.Residual current circuit breaker has overload and short-circuit protection function, can be used to overload and the short circuit of protection circuit, also can be under normal circumstances as the use of the not frequent transitions of circuit.
Traditional electronic type residual current circuit breaker of commonly using at present, the terminals of its top, as the inlet wire of power supply, are called upper incoming line conventionally, and the terminals of below, usually used as the connection of load, are called lower outlet.Conventionally require the wiring of the upper incoming line of mains side and the lower outlet of load end can not wrong, power supply can not be connected on to lower outlet, and load is connected on to upper incoming line.Once wrong, is called reverse wiring or lower outlet, will make damage of product.This is because the creepage protection function of electronic type residual current circuit breaker part need to be from mains side power taking.If upper incoming line is correctly connected with power supply, circuit breaker receives electric leakage signal and also can cut off the power supply supply of creepage protection function part when threading off; If but lower outlet is connected with power supply mistakenly; even after circuit breaker tripping in off-state; creepage protection function part is also lasting charged; for example, and at this moment the test loop of creepage protection function part is (in on-state always; the testing button that user pins residual current circuit breaker is not put); test loop can make creepage protection function part continuous firing (continuing to send electric leakage signal to circuit breaker) and cause the electronic component of creepage protection function part to burn out, thereby damages whole residual current circuit breaker.
Therefore; the damage of the residual current circuit breaker causing in order to prevent above-mentioned wiring error from connecting; preferably make residual current circuit breaker there is the function of reverse wiring;; even if power supply is connected on to lower outlet, and load is connected on to upper incoming line, residual current circuit breaker still can normally be worked; and at circuit breaker, due to electric leakage, wait protection reason or test protection former thereby thread off after during in off-state, the creepage protection function that can not damage residual current circuit breaker is partly and even damage whole residual current circuit breaker.
In prior art, there are some residual current circuit breaker also can realize by some specific structures the function of above-mentioned reverse wiring.As disclosed a kind of invertible wiring electrical leakage breaker in Chinese patent No.03238605.2 (notification number CN2604773Y), by breaker portion and electric leakage action part, formed, comprise pedestal, lid, fixed contact, moving contact, operating mechanism, leakage current transformer, electric leakage control circuit board, release, it is characterized in that being also provided with auxiliary contact near fixed contact, the power line of electric leakage control circuit board is connected to auxiliary contact, when its moving contact and fixed contact closure, moving contact and auxiliary contact are also closed, electric leakage control circuit board has power supply supply and in running order, earth leakage protective can be provided, when moving contact and fixed contact disconnection, moving contact and auxiliary contact also disconnect, electric leakage control circuit board is connected to the power line of auxiliary contact and non-transformer supply, electric leakage control circuit board can not be worked.Therefore after power line connects instead, residual current circuit breaker also can shield, and can not make residual current circuit breaker circuit burn out or release damage.But the scheme of this utility model is too complicated, and cost is also high, and cannot carry out the checking of life-span and reliability.
So, need to have a kind of can provide realize have reverse wiring function, operate micro electric minor residual current circuit breaker reliable, simple in structure.
Summary of the invention
Shortcoming and defect for above-mentioned, has proposed the present invention.The present invention relates to a kind of experimental rig for circuit breaker, this device comprises testing button, test torsion spring, bonding conductor, lever, test resistance.This device can with the mechanical component co-operating of described circuit breaker, regardless of the state of test button, after completing test signal transmission, disconnect test loop, thereby even if guarantee that circuit breaker also can carry out safely periodical test when reverse wiring.
Particularly, the invention provides the electronic type residual current circuit breaker using in a kind of distribution system, comprise insulation crust, mechanical component, moving contact, fixed contact, leakage tripping device, experimental rig, wherein moving contact is connected with mechanical component by moving contact rack.Wherein leakage tripping device comprises magnetic leakage electric protection assembly, magnetic leakage electric protection assembly striker and electric leakage control printed substrate.Wherein experimental rig comprises testing button, test torsion spring, bonding conductor, test resistor and the wire for connecting.Described experimental rig also comprises a lever, between moving contact rack and the leftover bits and pieces of test torsion spring, for moving synergistically with the mechanical component of circuit breaker, when mechanical component is threaded off, the rotation of moving contact rack can drive the lever in experimental rig and will test the leftover bits and pieces jack-up of torsion spring, the connection that makes to test between torsion spring and test resistor disconnects, thereby makes leakage tests loop in off-state.
The present invention also provides a kind of experimental rig of the electronic type residual current circuit breaker for distribution system, described electronic type residual current circuit breaker comprises insulation crust, mechanical component, moving contact, fixed contact, leakage tripping device, and wherein moving contact is connected with mechanical component by moving contact rack.Wherein leakage tripping device comprises magnetic leakage electric protection assembly, magnetic leakage electric protection assembly striker and electric leakage control printed substrate.Experimental rig comprises testing button, test torsion spring, bonding conductor, test resistor and the wire for connecting.Described experimental rig also comprises a lever, between moving contact rack and the leftover bits and pieces of test torsion spring, for moving synergistically with the mechanical component of circuit breaker, when mechanical component is threaded off, the rotation of moving contact rack can drive the lever in experimental rig and will test the leftover bits and pieces jack-up of torsion spring, the connection that makes to test between torsion spring and test resistor disconnects, thereby makes leakage tests loop in off-state.
Wherein said bonding conductor is neutral iron plate.
The experimental rig of the micro electric minor residual current circuit breaker that the present invention proposes has unique version.The micro electric minor residual current circuit breaker with above-mentioned experimental rig has realized the reverse wiring function of circuit breaker, and operation is reliable, simple in structure, with low cost, can reach the life-span 20000 times.At the experimental rig of micro electric minor residual current circuit breaker of the present invention and have in the micro electric minor residual current circuit breaker of above-mentioned experimental rig, state regardless of test button, after completing the transmission of test electric leakage signal, test loop all disconnects, thereby even if guarantees that circuit breaker also can carry out safely periodical test when reverse wiring.
Through the verification experimental verification of theoretical calculating and sample, prove the micro electric minor residual current circuit breaker of the present invention's proposition reliably, effectively.Can be used for large-scale production.
Accompanying drawing explanation
By the detailed description to example embodiment below in conjunction with accompanying drawing, will understand better the present invention.It should be clearly understood that described example embodiment is only as explanation and example, and the invention is not restricted to this.The spirit and scope of the present invention are only limited by the particular content of appended claims.Brief description of drawings is described below, wherein:
Fig. 1 is the structural representation during according to the normal work of micro electric minor residual current circuit breaker of the present invention;
Fig. 2 is the structural representation during according to the trystate of micro electric minor residual current circuit breaker of the present invention; And
Fig. 3 is the structural representation after the trystate of micro electric minor residual current circuit breaker of the present invention finishes.
Embodiment
To introduce in detail example embodiment of the present invention now, its example is shown in the drawings, all the identical identical element of reference numerals designate in accompanying drawing.Embodiment is described with reference to the accompanying drawings with explanation the present invention.
Conventional traditional electronic type residual current circuit breaker comprises insulation crust, mechanical component, moving contact, fixed contact, leakage tripping device, experimental rig at present.Wherein moving contact is connected with mechanical component by moving contact rack.Wherein leakage tripping device comprises magnetic leakage electric protection assembly, magnetic leakage electric protection assembly striker and electric leakage control printed substrate (not shown).Experimental rig comprises testing button, test torsion spring, neutral iron plate, test resistor and the wire for connecting.When electronic type residual current circuit breaker is during in closure state, the upper pin of test torsion spring contacts with testing button, and for testing button provides precompression, tests the leftover bits and pieces of torsion spring and the pin of test resistor and contact.
When having people's electric shock or circuit leakage current over power failures such as settings; magnetic leakage electric protection assembly can produce electric leakage signal; and electric leakage signal is passed to electric leakage control printed substrate; electric leakage is controlled printed substrate to processing such as electric leakage signal amplify; and the electric leakage signal after processing is passed to magnetic leakage electric protection assembly again; magnetic leakage electric protection assembly receives after the electric leakage signal after processing, drives magnetic leakage electric protection assembly striker to remove to promote mechanical component and threads off.
Equally, when testing button is pressed, test driven down rotation of upper pin of torsion spring and contact with neutral iron plate, now test resistor is contacted by the upper leftover bits and pieces of torsion spring with neutral iron plate and makes the conducting of leakage tests loop, test magnetic leakage electric protection assembly can produce test electric leakage signal, and test electric leakage signal is passed to electric leakage control printed substrate, electric leakage is controlled printed substrate to processing such as test electric leakage signal amplify, and the test electric leakage signal after processing is passed to magnetic leakage electric protection assembly again, magnetic leakage electric protection assembly receives after the test electric leakage signal after processing, driving magnetic leakage electric protection assembly striker to remove to promote mechanical component threads off.When mechanical component is threaded off, test resistor and neutral the iron plate still upper leftover bits and pieces of tested torsion spring contacts and make leakage tests loop in connection closure state.If, the wiring wrong of the upper incoming line of the mains side of electronic type residual current circuit breaker and the lower outlet of load end now, power supply is connected on to lower outlet, and load is connected on to upper incoming line, and the testing button that user pins residual current circuit breaker is not put and is made testing button always in the next, creepage protection function is partly lasting charged, and at this moment the leakage tests loop of creepage protection function part always in on-state, leakage tests loop can make creepage protection function part continuous firing (continuing to send electric leakage signal to circuit breaker) and cause the electronic component of creepage protection function part to burn out, thereby damage whole residual current circuit breaker.
The present invention improves for above-mentioned defect just.
With reference to Fig. 1, Fig. 1 is the structural representation during according to the normal work of micro electric minor residual current circuit breaker of the present invention.
According to the present invention, electronic type residual current circuit breaker and above-mentioned traditional electronic type residual current circuit breaker are similar, comprise insulation crust, mechanical component 9, moving contact, fixed contact, leakage tripping device, experimental rig.Wherein moving contact is connected with mechanical component by moving contact rack.Wherein leakage tripping device comprises magnetic leakage electric protection assembly 6, magnetic leakage electric protection assembly striker 7 and electric leakage control printed substrate (not shown).Experimental rig comprises testing button 1, test torsion spring 2, bonding conductor 3, testing element 5 and the wire for connecting.This bonding conductor can be realized with a neutral iron plate, and this testing element can be realized with a resistor, and as shown in Figure 1, but to those skilled in the art, the present invention is obviously not limited to this.When electronic type residual current circuit breaker of the present invention is during in closure state, the upper pin of test torsion spring 2 contacts with testing button 1, and for testing button 1 provides precompression, the leftover bits and pieces of testing torsion spring 2 contacts with the pin of test resistor 5.
In addition, the experimental rig of electronic type residual current circuit breaker of the present invention also comprises a disconnecting apparatus 4, between moving contact rack 8 and the leftover bits and pieces of test torsion spring 1, for moving synergistically with the mechanical component 9 of circuit breaker, when mechanical component 9 is threaded off, the connection that disconnecting apparatus 4 makes to test between torsion spring 1 and test resistor 5 disconnects, thereby makes leakage tests loop in off-state.This disconnecting apparatus 4 can be realized with a lever, and as shown in Figure 1, but to those skilled in the art, the present invention is obviously not limited to this.
When having people's electric shock or circuit leakage current over power failures such as settings; magnetic leakage electric protection assembly 6 can produce electric leakage signal; and electric leakage signal is passed to electric leakage control printed substrate; electric leakage is controlled printed substrate to processing such as electric leakage signal amplify; and the electric leakage signal after processing is passed to magnetic leakage electric protection assembly 6 again; after the electric leakage signal that magnetic leakage electric protection assembly 6 receives after processing, drive magnetic leakage electric protection assembly striker 7 to remove to promote mechanical component 9 and thread off.
With reference to Fig. 2, Fig. 2 is the structural representation during according to the trystate of micro electric minor residual current circuit breaker of the present invention.
When testing button 1 is pressed; test driven down rotation of upper pin of torsion spring 2 and contact with neutral iron plate 3; now test resistor 5 is contacted by the upper leftover bits and pieces of torsion spring with neutral iron plate 3 and makes the conducting of leakage tests loop; test magnetic leakage electric protection assembly 6 can produce test electric leakage signal; and test electric leakage signal is passed to electric leakage control printed substrate; electric leakage is controlled printed substrate to processing such as test electric leakage signal amplify, and the test electric leakage signal after processing is passed to magnetic leakage electric protection assembly 6 again.
With reference to Fig. 3, Fig. 3 is the structural representation after the trystate of micro electric minor residual current circuit breaker of the present invention finishes.
When shown in Fig. 2 in the situation that, magnetic leakage electric protection assembly 6 receives after the test electric leakage signal after processing, drives magnetic leakage electric protection assembly striker 7 to remove to promote mechanical component 9 and threads off.When mechanical component 9 is threaded off, the rotation of moving contact rack 8 can drive the lever 4 in experimental rig and by the leftover bits and pieces jack-up of test torsion spring 2, make to test the connection disconnection between torsion spring 2 and test resistor 5, thereby makes leakage tests loop in off-state.
Now; even the wiring wrong of the upper incoming line of the mains side of electronic type residual current circuit breaker of the present invention and the lower outlet of load end; power supply is connected on to lower outlet; and load is connected on to upper incoming line; and the testing button 1 that user pins residual current circuit breaker is not put and is made testing button 1 always in the next; leakage tests loop is also still disconnection, and creepage protection function part can be not charged, does not therefore have lasting test electric leakage signal to pass to electric leakage and controls printed substrate.Therefore the electronic component of creepage protection function part can not be burned, and whole residual current circuit breaker can not damaged yet.
In this state, only have the power failure of eliminating or discharge testing button, and the handle outside make position promotes to be placed in the insulation crust of electronic type residual current circuit breaker of the present invention, just can make electronic type residual current circuit breaker of the present invention depart from malfunction or trystate, and return to normal Operating In Persistent Current Mode state.
The present invention is based on the structure of current electronic type residual current circuit breaker, in experimental rig therein, increased a lever 4, utilize this lever 4 to make experimental rig and breaker mechanical structure keep co-operating.
Meanwhile, in the present invention, newly-increased lever 4 can not hinder motion and the characteristic of breaker mechanical structure.Spring 2 in testing apparatus is for the restoring force of test button 1 is provided, and as conductor, provides signal path simultaneously.The problem that the experimental rig that the invention solves the micro electric minor residual current circuit breaker with reverse wiring function is too complicated, simultaneously in the narrow and small structure space of circuit breaker by simple, guarantee that the experimental rig in circuit breaker can not switch on for a long time and avoid burning circuit breaker when experimental rig structure has realized reverse power connection reliably.
The experimental rig of the micro electric minor residual current circuit breaker that the present invention proposes has unique version.There is the micro electric minor residual current circuit breaker of above-mentioned experimental rig by utilizing the rotation of moving contact rack 8 when threading off to realize the disconnection in test loop, thereby realized the reverse wiring function of circuit breaker, operation is reliable, simple in structure, with low cost, can reach the life-span 20000 times.At the experimental rig of micro electric minor residual current circuit breaker of the present invention and have in the micro electric minor residual current circuit breaker of above-mentioned experimental rig, state regardless of test button, after completing the transmission of test electric leakage signal, test loop all disconnects, thereby even if guarantees that circuit breaker also can carry out safely periodical test when reverse wiring.
Through the verification experimental verification of theoretical calculating and sample, prove the micro electric minor residual current circuit breaker of the present invention's proposition reliably, effectively.Can be used for large-scale production.
Although illustrated and described the example embodiment of the present invention of considering, but it will be appreciated by those skilled in the art that, along with the progress of technology, can make various changes and revise and can replace its element and not deviate from true scope of the present invention with equivalent.
Claims (4)
1. the electronic type residual current circuit breaker using in distribution system, comprises insulation crust, mechanical component, moving contact, fixed contact, leakage tripping device, experimental rig, and wherein moving contact is connected with mechanical component by moving contact rack,
Wherein leakage tripping device comprises magnetic leakage electric protection assembly, magnetic leakage electric protection assembly striker and electric leakage control printed substrate,
Wherein experimental rig comprises testing button, test torsion spring, bonding conductor, test resistor and the wire for connecting,
It is characterized in that described experimental rig also comprises a lever, between moving contact rack and the leftover bits and pieces of test torsion spring, for moving synergistically with the mechanical component of circuit breaker, when mechanical component is threaded off, the rotation of moving contact rack can drive the lever in experimental rig and will test the leftover bits and pieces jack-up of torsion spring, the connection that makes to test between torsion spring and test resistor disconnects, thereby makes leakage tests loop in off-state.
2. electronic type residual current circuit breaker as claimed in claim 1, is characterized in that
Described bonding conductor is neutral iron plate.
3. for the experimental rig of the electronic type residual current circuit breaker of distribution system,
Described electronic type residual current circuit breaker comprises insulation crust, mechanical component, moving contact, fixed contact, leakage tripping device, and wherein moving contact is connected with mechanical component by moving contact rack,
Wherein leakage tripping device comprises magnetic leakage electric protection assembly, magnetic leakage electric protection assembly striker and electric leakage control printed substrate,
Experimental rig comprises testing button, test torsion spring, bonding conductor, test resistor and the wire for connecting,
It is characterized in that described experimental rig also comprises a lever, between moving contact rack and the leftover bits and pieces of test torsion spring, for moving synergistically with the mechanical component of circuit breaker, when mechanical component is threaded off, the rotation of moving contact rack can drive the lever in experimental rig and will test the leftover bits and pieces jack-up of torsion spring, the connection that makes to test between torsion spring and test resistor disconnects, thereby makes leakage tests loop in off-state.
4. experimental rig as claimed in claim 3, is characterized in that
Described bonding conductor is neutral iron plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010124761.XA CN102194619B (en) | 2010-03-16 | 2010-03-16 | Test device for circuit breaker and circuit breaker with test device |
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| CN201010124761.XA CN102194619B (en) | 2010-03-16 | 2010-03-16 | Test device for circuit breaker and circuit breaker with test device |
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| CN102194619A CN102194619A (en) | 2011-09-21 |
| CN102194619B true CN102194619B (en) | 2014-08-13 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103065899B (en) * | 2011-10-21 | 2015-12-30 | 施耐德电器工业公司 | Earth leakage protective device and circuit breaker |
| JP6020236B2 (en) * | 2013-02-14 | 2016-11-02 | 富士電機機器制御株式会社 | Circuit breaker and circuit breaker assembly method |
| CN104183434B (en) * | 2014-07-16 | 2016-01-13 | 浙江天正电气股份有限公司 | A kind of residual current circuit breaker with reverse wiring structure |
| CN104409292B (en) * | 2014-12-05 | 2017-02-22 | 温州艾科电器科技有限公司 | Residual current circuit breaker |
| CN105510818B (en) * | 2015-12-30 | 2019-02-05 | 三信国际电器上海有限公司 | Breaker and its experimental rig and method |
| CN106783421B (en) * | 2016-12-23 | 2017-10-27 | 国网山东省电力公司武城县供电公司 | One kind is with earth leakage protective breaker and its application method |
| CN207367899U (en) * | 2017-11-07 | 2018-05-15 | 施耐德电气工业公司 | The low-voltage distribution equipment of predetermined state can be detected |
| CN108493074A (en) * | 2018-05-25 | 2018-09-04 | 温州华嘉电器有限公司 | A kind of earth leakage circuit breaker |
| JP2020167088A (en) * | 2019-03-29 | 2020-10-08 | パナソニックＩｐマネジメント株式会社 | Circuit breaker |
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| US7187526B2 (en) * | 2003-02-03 | 2007-03-06 | Leviton Manufacturing Co., Inc. | Circuit interrupting device with lock out and reversible wiring |
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| CN1223448A (en) * | 1998-01-15 | 1999-07-21 | 施耐德电器公司 | Device for locking circuit breaker plug-in and disconnection mechanism |
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