CN104681369A - Electronic leakage protection switch tripping device - Google Patents
Electronic leakage protection switch tripping device Download PDFInfo
- Publication number
- CN104681369A CN104681369A CN201510069706.8A CN201510069706A CN104681369A CN 104681369 A CN104681369 A CN 104681369A CN 201510069706 A CN201510069706 A CN 201510069706A CN 104681369 A CN104681369 A CN 104681369A
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- China
- Prior art keywords
- coil
- push rod
- iron core
- surge protection
- leakage
- 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
- H01H71/24—Electromagnetic mechanisms
Abstract
The invention discloses an electronic leakage protection switch tripping device which comprises a housing, a coil framework arranged in the housing, a movable iron core and an ejector rod arranged inside the coil framework, a leakage tripping drive coil wound on one end of the coil framework, and a surge protection coil, wherein the ejector rod is connected with the movable iron core; the leakage tripping drive coil is positioned at the end, provided with the ejector rod, of the coil framework; the surge protection coil is wound on the other end, provided with the movable iron core, of the coil framework; when a leakage fault occurs, the movable iron core moves toward the ejector rod and pushes out the ejector rod to trip a leakage protection switch. The electronic leakage protection switch tripping device adopts the arrangement of one surge protection coil and one leakage tripping drive coil; the surge protection coil effectively avoids the false tripping of the leakage protection switch due to the occurrence of instantaneous high surge voltage and has higher surge voltage anti-interference capability; the overall structural arrangement is reasonable and compact.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, particularly a kind of electronic leakage protection switch tripping apparatus.
Background technology
Electronic leakage protection switch as shown in Figure 1; generally can thread off under the following conditions: when there is high surge voltage instantaneously between L pole and N pole; piezo-resistance RV1 is conducting due to instantaneous pressure, and generation current I on disengaging deivce of earth leakage coil L1, causes earth leakage circuit-breaker to be threaded off.And in actual applications, we do not wish that switch is threaded off because instantaneous high surge voltage occurs, because application circuit wrong diagnosis electricity can be caused like this.
Electronic leakage protection switch as shown in Figure 2; high surge voltage in order to avoid instantaneous appearance causes circuit wrong diagnosis electricity; piezo-resistance RV1 is moved to the front end of coil L1, but the energy grade of piezo-resistance RV1 must be increased, bring cost and volume all will increase accordingly thus.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide a kind of cost low, structure is simple, electronic leakage protection switch tripping apparatus of good performance.
For achieving the above object, present invention employs following technical scheme:
A kind of electronic leakage protection switch tripping apparatus, comprise case 1, be placed in the coil rack 2 in case 1, be placed in dynamic iron core 3 and the push rod 5 of coil rack 2 inside, around the electric leakage dropout drive coil 4 of coil rack 2 one end, push rod 5 is connected with dynamic iron core 3; Also comprise a surge protection coil 7, described electric leakage dropout drive coil 4 is positioned at one end that coil rack 2 is provided with push rod 5; Described surge protection coil 7 is wrapped in the other end of coil rack 2, is positioned at the one end being provided with dynamic iron core 3; When there is leak current fault, dynamic iron core 3 is to push rod 5 one lateral movement, and promotion push rod 5 ejects and earth leakage circuit-breaker is threaded off.
Further, be connected in series between described electric leakage dropout drive coil 4 and surge protection coil 7, and around to identical.
Further, also comprise piezo-resistance RV1, one end of piezo-resistance RV1 is connected with the intermediate node of surge protection coil 7 and the dropout drive coil 4 that leaks electricity, and the other end is connected with power supply N pole.
Further, one end that described dynamic iron core 3 is connected with push rod 5 exceeds surge protection coil 7 exceeds the other end part of surge protection coil 7 length near the other end that the length of the one end portion of the dropout drive coil 4 that leaks electricity is greater than or equal to dynamic iron core 3.
Further, described coil rack 2 comprises wrapping post 21, and the inside of wrapping post 21 is cavity 211, and dynamic iron core 3 is located at cavity 211 near surge protection coil 7 one end, and it is inner near electric leakage dropout drive coil 4 one end that cavity 211 is located at by push rod 5; The two ends of wrapping post 21 are outwardly is provided with ring baffle 212, and the middle part of wrapping post 21 is outwardly is provided with annular partition plate 213, and surge protection coil 7 and electric leakage dropout drive coil 4 separate the both sides being arranged on annular partition plate 213.
Further, the spring 6 be sleeved on push rod 5 is also comprised; The other end of push rod 5 extends striker 51, and spring 6 is set on striker 51, and push rod 5 is provided with the first boss 52 be connected with spring 6, and coil rack 2 madial wall relevant position is provided with the second boss 23 be connected with the other end of spring 6.
Further, the relevant position, one end of described coil rack 2 and case 1 is provided with the through hole 101 allowing the striker 51 of push rod 5 pass.
Further, also comprise diode VD1, diode VD2, controllable silicon SCR, electric capacity C7 and electronic circuit; Surge protection coil 7 is connected with power supply L pole with the one end after the series connection of electric leakage dropout drive coil 4, the other end is connected with the positive pole of diode VD1, the negative electrode of diode VD1 is connected with the anode of controllable silicon SCR, the negative electrode of controllable silicon SCR is connected with the positive pole of diode VD2, the gate pole of controllable silicon SCR is connected with electronic circuit, and the negative electrode of diode VD2 is connected with power supply N pole; The two ends of electric capacity C7 are connected with electronic circuit; Electronic circuit one end is connected with the intermediate node of surge protection coil 7 and the dropout drive coil 4 that leaks electricity, and the other end is connected with the anode of diode VD2.
Further, the two ends of described coil rack 2 are connected with case 1 internal side wall respectively, and dynamic end, iron core 3 one end, coil rack 2 inside is adjacent to the internal side wall of case 1; Described case 1 two ends internal side wall is respectively equipped with buckle block 11, and the two ends of described coil rack 2 are respectively equipped with the buckle slot 22 coordinated with buckle block 11.
Electronic leakage protection switch tripping apparatus of the present invention adopts the setting of a surge protection coil and electric leakage dropout drive coil, surge protection coil effectively prevent because instantaneous high surge voltage occurs and causes earth leakage circuit-breaker false tripping, has higher surge voltage antijamming capability; Integral arrangement is rationally compact.Surge protection coil and electric leakage dropout drive coil around to identical, relatively reduce the difficulty of processing technology; By rationally arranging dynamic iron core position, effectively can reduce the requirement to piezo-resistance energy grade, reducing production cost, reduce the overall volume of earth leakage circuit-breaker; When there is leak current fault, surge protection coil also produces magnetic force simultaneously, and the magnetic force one that electric leakage dropout drive coil produces reacts on the dropout of dynamic iron core driving earth leakage circuit-breaker, and performance is more stable.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of prior art;
Fig. 2 is the circuit diagram that piezo-resistance RV1 is moved to the front end of coil L1 by prior art;
Fig. 3 is profile of the present invention;
Fig. 4 is circuit diagram of the present invention.
Embodiment
Below in conjunction with the embodiment that accompanying drawing 1 to 4 provides, further illustrate the embodiment of electronic leakage protection switch tripping apparatus of the present invention.Electronic leakage protection switch tripping apparatus of the present invention is not limited to the description of following examples.
As shown in Figure 3, a kind of electronic leakage protection switch tripping apparatus, comprises case 1; be placed in the coil rack 2 in case 1; be placed in dynamic iron core 3 and the push rod 5 of coil rack 2 inside, around the electric leakage dropout drive coil 4 of coil rack 2 one end, push rod 5 is connected with dynamic iron core 3.Also comprise a surge protection coil 7, described electric leakage dropout drive coil 4 is positioned at one end that coil rack 2 is provided with push rod 5; Described surge protection coil 7 is wrapped in the other end of coil rack 2, is positioned at the one end being provided with dynamic iron core 3; When there is leak current fault, dynamic iron core 3 is to push rod 5 one lateral movement, and promotion push rod 5 ejects and earth leakage circuit-breaker is threaded off.Electronic leakage protection switch tripping apparatus of the present invention adopts the setting of a surge protection coil and an electric leakage dropout drive coil, surge protection coil effectively prevent because instantaneous high surge voltage occurs and causes earth leakage circuit-breaker false tripping, has higher surge voltage antijamming capability; Integral arrangement is rationally compact.Surge protection coil and electric leakage dropout drive coil around to identical, relatively reduce the difficulty of processing technology; By rationally arranging dynamic iron core position, effectively can reduce the requirement to piezo-resistance energy grade, reducing production cost, reduce the overall volume of earth leakage circuit-breaker; When there is leak current fault, surge protection coil also produces magnetic force simultaneously, and the magnetic force one that electric leakage dropout drive coil produces reacts on the dropout of dynamic iron core driving earth leakage circuit-breaker, and performance is more stable.
As shown in Figure 3-4, be connected in series between described electric leakage dropout drive coil 4 and surge protection coil 7, and around to identical; Surge protection coil 7 and electric leakage dropout drive coil 4 around to identical, relatively reduce the difficulty of processing.One end that described dynamic iron core 3 is connected with push rod 5 exceeds surge protection coil 7 exceeds the other end part of surge protection coil 7 length near the other end that the length of the one end portion of the dropout drive coil 4 that leaks electricity is greater than or equal to dynamic iron core 3, the length in figure, one end that dynamic iron core 3 is connected with push rod 5 being exceeded the one end portion of the close dropout drive coil 4 that leaks electricity of surge protection coil 7 is set to " b " value, the length that the other end of dynamic iron core 3 exceeds the other end part of surge protection coil 7 is set to " a " value, earth leakage circuit-breaker false tripping is caused in order to ensure dynamic iron core 3 can not promote push rod 5, " b " value should be greater than or equal to " a " value, make when there is high surge voltage, surge current is produced in surge protection coil 7, surge protection coil 7 produces magnetic force, and the dropout drive coil 4 that leaks electricity does not have electric current, do not produce magnetic force, the opposite direction that dynamic iron core 3 is threaded off towards push rod 5 is moved or keeps motionless, in addition, the preferred span of " a " value and " b " value is the definition such as concrete size, the parameter of case, dynamic core material, dynamic core dimensions according to line operating voltages, trip gear.When there is leak current fault; the surge protection coil 7 dropout drive coil 4 that leaks electricity all flows through drop-away current and produces magnetic force; the magnetic force that electric leakage dropout drive coil 4 produces and the magnetic force that surge protection coil 7 produces; drive dynamic iron core 3 to promote push rod 5 towards the direction motion of threading off, earth leakage circuit-breaker is threaded off.
As shown in Figure 3, described coil rack 2 comprises wrapping post 21, and the inside of wrapping post 21 is cavity 211, and dynamic iron core 3 is located at cavity 211 near surge protection coil 7 one end, and it is inner near electric leakage dropout drive coil 4 one end that cavity 211 is located at by push rod 5; The two ends of wrapping post 21 are outwardly is provided with ring baffle 212, and the middle part of wrapping post 21 is outwardly is provided with annular partition plate 213, and surge protection coil 7 and electric leakage dropout drive coil 4 separate the both sides being arranged on annular partition plate 213; The setting of annular partition plate 213, separates mutually by surge protection coil 7 and electric leakage dropout drive coil 4, the service behaviour of both guarantees.Also comprise the spring 6 be sleeved on push rod 5; The other end of push rod 5 extends striker 51, and spring 6 is set on striker 51, and one end of push rod 5 is provided with the first boss 52 be connected with spring 6, and coil rack 2 madial wall relevant position is provided with the second boss 23 be connected with the other end of spring 6; During installation, spring 6 is inserted in from striker 51 one end, and one end of spring 6 is connected with the first boss 52, and the other end is connected with the second boss 23, the secure and reliable connection of spring 6.The relevant position, one end of described coil rack 2 and case 1 is provided with the through hole 101 allowing the striker 51 of push rod 5 pass; During installation, striker 51 is through through hole 101.The two ends of described coil rack 2 are connected with case 1 internal side wall respectively; Described case 1 two ends internal side wall is respectively equipped with buckle block 11, and the two ends of described coil rack 2 are respectively equipped with the buckle slot 22 coordinated with buckle block 11; During installation, the buckle block 11 at case 1 two ends snaps in the buckle slot 22 at coil rack 2 two ends respectively, and stabilized structure is reliable therebetween.
During installation, first can be wound around electric leakage dropout drive coil 4 and surge protection coil 7 respectively in annular partition plate 213 both sides of coil rack 2; Then in the internal cavities of coil rack 2, put into spring 6 successively, with the dynamic iron core 3 be fixedly connected with and push rod 5, the striker 51 of push rod 5 is through spring, and striker 51 is through through hole 101; Finally case 1 is fixedly connected with coil rack 2.
As shown in Figure 4, be the circuit diagram of electronic leakage protection switch tripping apparatus of the present invention, L1 and surge protection coil 7 in figure; namely L2 leaks electricity dropout drive coil 4, also comprises piezo-resistance RV1, diode VD1; diode VD2, controllable silicon SCR, electric capacity C7 and electronic circuit.One end of piezo-resistance RV1 is connected with the intermediate node of surge protection coil 7 and the dropout drive coil 4 that leaks electricity, and the other end is connected with power supply N pole.Surge protection coil 7 is connected with power supply L pole with the one end after the series connection of electric leakage dropout drive coil 4, the other end is connected with the positive pole of diode VD1, the negative electrode of diode VD1 is connected with the anode of controllable silicon SCR, the negative electrode of controllable silicon SCR is connected with the positive pole of diode VD2, the gate pole of controllable silicon SCR is connected with electronic circuit, and the negative electrode of diode VD2 is connected with power supply N pole; The two ends of electric capacity C7 are connected with electronic circuit; Electronic circuit one end is connected with the intermediate node of surge protection coil 7 and the dropout drive coil 4 that leaks electricity, and the other end is connected with the anode of diode VD2.
As shown in Figure 4, when there is surge voltage, the surge current I1 produced flows through surge protection coil L1, piezo-resistance RV1, forms a deboost much smaller than surge voltage at the two ends of piezo-resistance RV1, effectively protects the electronic component in electronic circuit below; Sealing in due to surge protection coil 7 simultaneously, relatively can reduce the energy grade of piezo-resistance under identical protection class requires.When there is leak current fault; electronic circuit makes controllable silicon SCR conducting; the surge protection coil L1 that supply voltage is added in series connection forms drop-away current I2 with electric leakage dropout drive coil L2, diode VD1, controllable silicon SCR, diode VD2, and electric leakage trip switch is threaded off.
Electronic leakage protection switch tripping apparatus of the present invention arranges and to be connected in series and around to identical surge protection coil and an electric leakage dropout drive coil; effectively prevent because instantaneous high surge voltage occurs and cause earth leakage circuit-breaker false tripping, reducing the difficulty of processing technology simultaneously.Surge protection coil can get surge protection and trip action double action, when there is high surge voltage in circuit, and surge protection coil protect earth leakage circuit-breaker false tripping; When there is leak current fault in circuit, the magnetic force one that surge protection coil and electric leakage dropout drive coil produce reacts on dynamic iron core and drives earth leakage circuit-breaker to thread off, and performance is more stable.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. an electronic leakage protection switch tripping apparatus, comprise case (1), be placed in the coil rack (2) in case (1), be placed in the inner dynamic iron core (3) of coil rack (2) and push rod (5), around the electric leakage dropout drive coil (4) of coil rack (2) one end, push rod (5) is connected with dynamic iron core (3), it is characterized in that: also comprise a surge protection coil (7), described electric leakage dropout drive coil (4) is positioned at one end that coil rack (2) is provided with push rod (5); Described surge protection coil (7) is wrapped in the other end of coil rack (2), is positioned at the one end being provided with dynamic iron core (3); When there is leak current fault, dynamic iron core (3) is to push rod (5) lateral movement, and promotion push rod (5) ejects and earth leakage circuit-breaker is threaded off.
2. electronic leakage protection switch tripping apparatus according to claim 1, is characterized in that: be connected in series between described electric leakage dropout drive coil (4) and surge protection coil (7), and around to identical.
3. electronic leakage protection switch tripping apparatus according to claim 2; it is characterized in that: also comprise piezo-resistance RV1; one end of piezo-resistance RV1 is connected with the intermediate node of surge protection coil (7) and the dropout drive coil (4) that leaks electricity, and the other end is connected with power supply N pole.
4. electronic leakage protection switch tripping apparatus according to claim 1, is characterized in that: one end that described dynamic iron core (3) is connected with push rod (5) exceeds surge protection coil (7) exceeds the other end part of surge protection coil (7) length near the other end that the length of one end portion of the dropout drive coil (4) that leaks electricity is greater than or equal to dynamic iron core (3).
5. electronic leakage protection switch tripping apparatus according to claim 1, it is characterized in that: described coil rack (2) comprises wrapping post (21), the inside of wrapping post (21) is cavity (211), dynamic iron core (3) is located at cavity (211) near surge protection coil (7) one end, and it is inner near electric leakage dropout drive coil (4) one end that cavity (211) is located at by push rod (5); The two ends of wrapping post (21) are outwardly is provided with ring baffle (212); the middle part of wrapping post (21) is outwardly is provided with annular partition plate (213), and the both sides being arranged on annular partition plate (213) are separated in surge protection coil (7) and electric leakage dropout drive coil (4).
6. electronic leakage protection switch tripping apparatus according to claim 1, is characterized in that: also comprise the spring (6) be sleeved on push rod (5); The other end of push rod (5) extends striker (51), spring (6) is set on striker (51), push rod (5) is provided with the first boss (52) be connected with spring (6), and coil rack (2) madial wall relevant position is provided with the second boss (23) be connected with the other end of spring (6).
7. electronic leakage protection switch tripping apparatus according to claim 6, is characterized in that: the relevant position, one end of described coil rack (2) and case (1) is provided with the through hole (101) allowing the striker of push rod (5) (51) pass.
8. the electronic leakage protection switch tripping apparatus according to Claims 2 or 3, is characterized in that: also comprise diode VD1, diode VD2, controllable silicon SCR, electric capacity C7 and electronic circuit; Surge protection coil (7) is connected with power supply L pole with the one end after electric leakage dropout drive coil (4) series connection, the other end is connected with the positive pole of diode VD1, the negative electrode of diode VD1 is connected with the anode of controllable silicon SCR, the negative electrode of controllable silicon SCR is connected with the positive pole of diode VD2, the gate pole of controllable silicon SCR is connected with electronic circuit, and the negative electrode of diode VD2 is connected with power supply N pole; The two ends of electric capacity C7 are connected with electronic circuit; Electronic circuit one end is connected with the intermediate node of surge protection coil (7) and the dropout drive coil (4) that leaks electricity, and the other end is connected with the anode of diode VD2.
9. electronic leakage protection switch tripping apparatus according to claim 1, it is characterized in that: the two ends of described coil rack (2) are connected with case (1) internal side wall respectively, dynamic iron core (3) end, one end, coil rack (2) inside is adjacent to the internal side wall of case (1); Described case (1) two ends internal side wall is respectively equipped with buckle block (11), and the two ends of described coil rack (2) are respectively equipped with the buckle slot (22) coordinated with buckle block (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069706.8A CN104681369B (en) | 2015-02-10 | 2015-02-10 | Electronic leakage protection switch tripping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069706.8A CN104681369B (en) | 2015-02-10 | 2015-02-10 | Electronic leakage protection switch tripping apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN104681369A true CN104681369A (en) | 2015-06-03 |
| CN104681369B CN104681369B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510069706.8A Active CN104681369B (en) | 2015-02-10 | 2015-02-10 | Electronic leakage protection switch tripping apparatus |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518791A1 (en) * | 1991-06-14 | 1992-12-16 | Schneider Electric Sa | Electromagnet trip device with percussion-pin |
| EP0537090A1 (en) * | 1991-10-10 | 1993-04-14 | Schneider Electric Sa | Electric circuit breaker with insertion of extra-turns in the magnetic trip mechanism winding |
| US6265957B1 (en) * | 1999-09-15 | 2001-07-24 | Square D Company | Electromagnetic actuator equipped with two return springs |
| CN201252069Y (en) * | 2008-09-09 | 2009-06-03 | 李乾伟 | Two-way magnetic control drive device for a circuit breaker |
| CN201256132Y (en) * | 2008-03-24 | 2009-06-10 | 施耐德电器工业公司 | High interference resistance electronic leakage protection switch tripping apparatus |
| CN202905637U (en) * | 2012-07-11 | 2013-04-24 | 法纳通电器(上海)有限公司 | Current leakage trip |
| CN203503579U (en) * | 2013-09-16 | 2014-03-26 | 浙江天正电气股份有限公司 | Electromagnetic system of electric leakage buckle release |
| CN203503577U (en) * | 2013-09-13 | 2014-03-26 | 浙江正泰电器股份有限公司 | Electric leakage buckle release |
| CN204480984U (en) * | 2015-02-10 | 2015-07-15 | 浙江正泰电器股份有限公司 | Electronic leakage protection switch tripping apparatus |
-
2015
- 2015-02-10 CN CN201510069706.8A patent/CN104681369B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518791A1 (en) * | 1991-06-14 | 1992-12-16 | Schneider Electric Sa | Electromagnet trip device with percussion-pin |
| EP0537090A1 (en) * | 1991-10-10 | 1993-04-14 | Schneider Electric Sa | Electric circuit breaker with insertion of extra-turns in the magnetic trip mechanism winding |
| US6265957B1 (en) * | 1999-09-15 | 2001-07-24 | Square D Company | Electromagnetic actuator equipped with two return springs |
| CN201256132Y (en) * | 2008-03-24 | 2009-06-10 | 施耐德电器工业公司 | High interference resistance electronic leakage protection switch tripping apparatus |
| CN201252069Y (en) * | 2008-09-09 | 2009-06-03 | 李乾伟 | Two-way magnetic control drive device for a circuit breaker |
| CN202905637U (en) * | 2012-07-11 | 2013-04-24 | 法纳通电器(上海)有限公司 | Current leakage trip |
| CN203503577U (en) * | 2013-09-13 | 2014-03-26 | 浙江正泰电器股份有限公司 | Electric leakage buckle release |
| CN203503579U (en) * | 2013-09-16 | 2014-03-26 | 浙江天正电气股份有限公司 | Electromagnetic system of electric leakage buckle release |
| CN204480984U (en) * | 2015-02-10 | 2015-07-15 | 浙江正泰电器股份有限公司 | Electronic leakage protection switch tripping apparatus |
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| CN104681369B (en) | 2017-03-15 |
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