CN2512108Y - Residuel current actuating circuit breaker - Google Patents
Residuel current actuating circuit breaker Download PDFInfo
- Publication number
- CN2512108Y CN2512108Y CN 01269664 CN01269664U CN2512108Y CN 2512108 Y CN2512108 Y CN 2512108Y CN 01269664 CN01269664 CN 01269664 CN 01269664 U CN01269664 U CN 01269664U CN 2512108 Y CN2512108 Y CN 2512108Y
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- China
- Prior art keywords
- circuit
- pin
- electric capacity
- residual current
- leakage current
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a residuel current actuating circuit breaker, comprising a leakage current transformer, a release, an electronic circuit and a shell, wherein, the a coil of the leakage current transformer is connected with an input end of the electronic circuit, while an output end of the electronic circuit is connected with the release; an iron core of the transformer is formed by stacking punched sheets, and every two sheets are bonded through silicon valley lipid; the electronic circuit comprises an amplifier, a driving circuit and a DC power circuit as well as a neutral false earthing protection circuit; a power socket is also arranged on the shell. The utility model executes great changes on the circuit and the structure, thereby having the characteristics of high sensitivity, good stability, neutral false earthing protective function, convenient use, etc.
Description
Technical field
The utility model relates to a kind of earth leakage protective device,, relate in particular to a kind of residual current action breaker.
Background technology
At present, because residual current circuit breaker can prevent effectively that the person from getting an electric shock and the accidents such as fire that cause because of electric leakage, thereby be used widely.But it is takeup type that there is the power transformer iron core in this circuit breaker, is difficult for rolling-in, influences the stability of product; The electronic circuit performance is bad, and its Sensitivity Stability is poor; The work temperature resistant range is little, between-25 ℃ to+44 ℃; And be not with socket, use defectives such as inconvenience.
Summary of the invention
The purpose of this utility model provides a kind of defencive function, highly sensitive, good stability with possessing neutral misconnection, and has the residual current action breaker of socket.
The utility model is made of leakage current transformer, release, electronic circuit, housing etc.The leakage current transformer coil is connected with the electronic circuit input, and its output is connected with release.The iron core of this instrument transformer is that punching is formed by stacking, and is bonding with Silicon Valley fat between every.Described electronic circuit comprises amplifier, drive circuit and DC power supply circuit, and neutral misconnection ground protective circuit.Also be provided with supply socket on the housing.
Because the utility model carried out very big improvement on circuit and structure, thereby possess highly sensitive, good stability, neutral misconnection ground defencive function, characteristics such as easy to use.The work environment for use temperature of circuit breaker is-35 ℃ to+66 ℃; Specified residue operating current is the 0.004-0.006 peace; Break-time was less than 0.025 second.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is a circuit diagram of the present utility model;
Fig. 3 is the utility model tripper structure schematic diagram.
Embodiment
Amplifier A of the present utility model comprises: the coil of leakage current transformer N1 is connected with capacitor C 1, be connected with the 1st pin of integrated circuit (IC), its other end is connected with the 3rd pin of IC, and the 6th pin of IC is connected with dc power anode, series resistor R2 between the 1st pin of IC and the 7th pin.The integrated circuit (IC) model can adopt RV4145 (FM2145).
Neutral misconnection of the present utility model ground protective circuit comprises: instrument transformer N2 coil two ends are in parallel with capacitor C 2, and wherein an end is connected the direct ground connection of the other end by capacitor C 3 with the 7th pin of integrated circuit (IC).
Drive circuit of the present utility model comprises: tripping coil J one end is connected with one of monitored power line, and the other end connects controllable silicon VD5, and this silicon controlled control extremely connects the back and is connected with the 5th pin of IC with capacitor C 4, C5.The other end ground connection of capacitor C 4 wherein; The collector electrode of another termination transistor VD6 of capacitor C 5, the grounded emitter of transistor VD6, the base stage series resistor R2 of transistor VD6, capacitor C 6 backs are connected with integrated circuit (IC) the 3rd pin.
DC circuit of the present utility model forms full-wave rectifying circuit by diode VD1, VD2, VD3, VD4 and resistance R 3, capacitor C 7 constitute.The a of full-wave rectifying circuit, b termination power, the end of c terminating resistor R3, d holds ground connection; The other end of resistance R 3 is connected with the 6th pin of integrated circuit (IC) with capacitor C 7 and after connecing.
The resistance R 4 that cross-over connection is connected between monitored power line, test button KN form test circuit, and two contacts of power line lay respectively between the front and back of instrument transformer N1, N2.Resistance R 5, diode VD8, luminous tube VD9 form indicating circuit.When the bridge rectifier of AC power, provide direct-current working volts through current-limiting resistance R3 and filter C7 for integrated circuit (IC) again via diode VD1-VD4 composition.Residual current is delivered to the 1st pin and the 3rd pin of integrated circuit (IC) through leakage current transformer N1 and coupling capacitance C1.Resistance R 4 and feeler switch KN1 are that residual current of circuit breaker increase is used for detecting the utility model interrupting performance; The effect of reset key KN2 is, as residual current the utility model branch had no progeny, and fault is got rid of the back by this key, and the utility model is resetted, the major loop closure, and the utility model enters normal operating conditions.
When high pressure occurring suddenly in the power supply, piezo-resistance RV can absorb high pressure, plays the overvoltage protection effect.When the residual electricity flow valuve when determining that by resistance R 1 threshold values equates, integrated circuit (IC) output trigger impulse triggers controllable silicon VD5 conducting, tripping coil J energising is moved release.This moment, circuit breaker had if residual current is arranged, and separation of flow coil is charged, the motion of release iron core; pulling flashboard 1 breaks away from restoring link 5 and balancing stand 2, and balancing stand glides; moving contact 3 separates with fixed contact 4, makes the residual current action breaker disjunction, and the disjunction power supply makes load reach protective effect.After the leakage current fault is got rid of, drive restoring links 5 by reset key 6 and move down, restoring link is locked mutually with balancing stand 2 during to certain position.When unclamping reset key, moving on the balancing stand 2 under the effect of back-moving spring, making moving contact 3 contact the residual current action breaker closure with fixed contact 4.Transistor VD6, capacitor C 4, C6, resistance R 2 makes residual current action breaker that better anti-disturbance performance be arranged, working stability.When neutral line misconnection ground, in circuit, just constitute instrument transformer N1, N2 oscillation circuit.If when oscillation intensity reached certain amplitude, integrated circuit (IC) made the release disjunction after sending trigger impulse.
Claims (6)
1, a kind of residual current action breaker that constitutes by leakage current transformer (N1), release, electronic circuit, housing; the coil that it is characterized in that leakage current transformer (N1) is connected with the electronic circuit input; its output is connected with release; the iron core of this instrument transformer is that punching is formed by stacking; described electronic circuit comprises amplifier (A), drive circuit and DC power supply circuit; and neutral misconnection ground protective circuit, also be provided with supply socket on the housing.
2, residual current action breaker according to claim 1, it is characterized in that described amplifier (A) comprising: the coil of leakage current transformer (N1) is connected with electric capacity (C1), (C1) the other end is connected with the 1st pin of integrated circuit (IC), its other end is connected with the 3rd pin of (IC), (IC) the 6th pin is connected with dc power anode, (IC) series resistor (R1) between the 1st pin and the 7th pin, bonding between each punching of leakage current mutual inductance (N1) iron core with Silicon Valley fat.
3, residual current action breaker according to claim 1 and 2; it is characterized in that neutral misconnection ground protective circuit comprises: instrument transformer (N2) coil two ends are in parallel with electric capacity (C2); wherein an end is connected the direct ground connection of the other end by electric capacity (C3) with the 7th pin of integrated circuit (IC).
4, residual current action breaker according to claim 1 and 2, it is characterized in that drive circuit comprises: tripping coil (J) end is connected with one of monitored power line, the other end connects controllable silicon (VD5), and this silicon controlled control extremely same electric capacity (C4), (C5) connect the back and be connected with the 5th pin of (IC).The other end ground connection of electric capacity (C4) wherein; The collector electrode of another termination transistor (VD6) of electric capacity (C5), the grounded emitter of transistor (VD6), the base stage series resistor (R2) of transistor (VD6), electric capacity (C6) back are connected with integrated circuit (IC) the 3rd pin.
5, residual current action breaker according to claim 1 and 2 is characterized in that DC circuit is formed full-wave rectifying circuit by diode (VD1), (VD2), (VD3), (VD4) and resistance (R3), electric capacity (C7) constitute.The a of full-wave rectifying circuit, b termination power, an end of c terminating resistor (R3), d holds ground connection, and the other end of resistance (R3) is connected with the 6th pin of integrated circuit (IC) with electric capacity (C7) and after connecing.
6, residual current action breaker according to claim 1 and 2, it is characterized in that being connected to the resistance (R4) of connecting between the monitored power line, the test circuit that test button (KN1) is formed, and two contacts of power line lay respectively between the front and back of instrument transformer (N1), (N2), are parallel with piezo-resistance (RV) at the two ends of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01269664 CN2512108Y (en) | 2001-11-28 | 2001-11-28 | Residuel current actuating circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01269664 CN2512108Y (en) | 2001-11-28 | 2001-11-28 | Residuel current actuating circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512108Y true CN2512108Y (en) | 2002-09-18 |
Family
ID=33675496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01269664 Expired - Fee Related CN2512108Y (en) | 2001-11-28 | 2001-11-28 | Residuel current actuating circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512108Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879596A (en) * | 2017-05-09 | 2018-11-23 | 上海复旦微电子集团股份有限公司 | A kind of leakage protection circuit with power supply monitoring function |
| CN109004621A (en) * | 2018-08-08 | 2018-12-14 | 山东超越数控电子股份有限公司 | A kind of low-power consumption leakage protection circuit for AC electric current |
-
2001
- 2001-11-28 CN CN 01269664 patent/CN2512108Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879596A (en) * | 2017-05-09 | 2018-11-23 | 上海复旦微电子集团股份有限公司 | A kind of leakage protection circuit with power supply monitoring function |
| CN108879596B (en) * | 2017-05-09 | 2019-11-05 | 上海复旦微电子集团股份有限公司 | A kind of leakage protection circuit with power supply monitoring function |
| CN109004621A (en) * | 2018-08-08 | 2018-12-14 | 山东超越数控电子股份有限公司 | A kind of low-power consumption leakage protection circuit for AC electric current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |