CN204794065U - Electric leakage circuit breaker thunderbolt surge protection circuit - Google Patents
Electric leakage circuit breaker thunderbolt surge protection circuit Download PDFInfo
- Publication number
- CN204794065U CN204794065U CN201520445179.1U CN201520445179U CN204794065U CN 204794065 U CN204794065 U CN 204794065U CN 201520445179 U CN201520445179 U CN 201520445179U CN 204794065 U CN204794065 U CN 204794065U
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- Prior art keywords
- lightning surge
- circuit
- residual current
- surge protection
- circuit breaker
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- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Abstract
The utility model provides an electric leakage circuit breaker thunderbolt surge protection circuit, it includes four -wire output, gets electric power supply circuit, electric leakage dropout control circuit, leakage detection circuit electricity with anti lightning surge circuit, four -wire in proper order and is connected, anti lightning surge circuit includes 4 piezo -resistor, piezo -resistor adopts radial connection to connect between four -wire output for have the piezo -resistor after two series connection between two arbitrary lines output, it has following beneficial effect: anti lightning surge can the reinforce, can normal work under the power failure condition, the electric leakage signal detection is reliable and stable, whole circuit design is simple, electromagnetic compatibility characteristic is high, and is small, low in production cost.
Description
Technical field
The utility model relates to circuit breaker technical field, more particularly, relates to a kind of three-phase and four-line residual current circuit breaker lightning surge protection circuit.
Background technology
Traditional three-phase and four-line residual current circuit breaker adopts single-phase lightning surge protection circuit, and remaining two-phase can not be protected.The working power of traditional three-phase and four-line residual current circuit breaker from single extraction, also have no relations, but traditional three-phase and four-line residual current circuit breaker cannot work when zero line or power taking phase phase line fault so remaining two-phase is not protected.What say now is exactly the three-phase and four-line residual current circuit breaker of any phase power taking, if this novel three-phase and four-line residual current circuit breaker in three-phase and four-line wherein the power supply of any two lines normally just can normally work.The security performance of this Three phase four line residual current circuit breaker is obviously better than traditional three-phase and four-line residual current circuit breaker, will propagate its belief on a large scale later.
The three-phase and four-line residual current circuit breaker of phase power taking arbitrarily meets the requirement of GB16917.1-2014 in addition, and traditional three-phase and four-line residual current circuit breaker but can not.(GB16917.1-2014 came into effect from June 29th, 2015)
The three-phase and four-line residual current circuit breaker of any phase power taking must adopt the omnibearing lightning surge protection circuit of three-phase and four-line.
Utility model content
In order to overcome above technical deficiency; the utility model provides a kind of residual current circuit breaker lightning surge protection circuit; the piezo-resistance of this protective circuit adopts radial (star) connection to make it always keep two piezo-resistance series connection when absorbing lightning surge between three-phase and four-line residual current circuit breaker each line, and the capacity that piezo-resistance can be made like this to absorb lightning surge is multiplied.
The utility model provides a kind of residual current circuit breaker lightning surge protection circuit; it comprises four lines and exports; be electrically connected with anti-lightning surge circuit, four line power taking power circuits, the dropout control circuit that leaks electricity, electric-leakage detection circuit successively; described anti-lightning surge circuit comprises 4 piezo-resistances; described piezo-resistance adopts radial connection to be connected between four lines outputs, makes the piezo-resistance after there is two series connection between any two lines outputs.
One end of 4 piezo-resistances links together, and its other end exports with four lines respectively and is electrically connected.
Described electric leakage dropout control circuit comprises control chip IC1 and control switch, and described control chip IC1 is SN54123.
Described control switch is controllable silicon SCR.
7 pin of described control chip IC1 are connected with the trigger electrode of controllable silicon SCR, and the anode of described controllable silicon SCR is connected with release, its minus earth, and 8 pin of control chip IC1 connect release.
Release is connect after the 8 pin series resistance R1 of described control chip IC1.
Described electric-leakage detection circuit comprises sampling resistor R2, bidirectional diode D5 and L-type filter circuit, and described sampling resistor R2 is connecting with L-type filter circuit with after bidirectional diode D5 parallel connection.
Described L-type filter circuit comprises electric capacity C3 and resistance R3.
The beneficial effect of utility model is: anti-lightning surge capacity is strong; Can normally work under power failure condition; Electric leakage signal detects reliable and stable; Whole circuit design is simple, electromagnetic compatibility characteristic is high, and volume is little, at the bottom of production cost.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present utility model.
Fig. 2 is the circuit diagram of anti-lightning surge circuit.
Fig. 3 is the circuit diagram of four line power taking power circuits.
Fig. 4 is the circuit diagram of electric leakage dropout control circuit.
Fig. 5 is the circuit diagram of electric-leakage detection circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1; the utility model provides a kind of residual current circuit breaker lightning surge protection circuit; it comprises four lines and exports; be electrically connected with anti-lightning surge circuit, four line power taking power circuits, the dropout control circuit that leaks electricity, electric-leakage detection circuit successively; described anti-lightning surge circuit comprises 4 piezo-resistances; described piezo-resistance adopts radial connection to be connected between four lines outputs, makes the piezo-resistance after there is two series connection between any two lines outputs.
As shown in Figure 2, described anti-lightning surge circuit comprises piezo-resistance RV1, RV2, RV3, RV4, and a pole of piezo-resistance RV1, RV2, RV3, RV4 links together, and another pole is connected respectively on four output lines of three-phase and four-line residual current circuit breaker, as shown in Figure 3, described four line power taking power circuits comprise diode D1, D2, D3, D4, D6, D7, D8, D9, diode D1, D2, D3, the positive terminal of D4 links together and becomes positive source, diode D6, D7, D8, the negative pole end of D9 links together and becomes power cathode, the negative pole of diode D1 and the positive pole of diode D6, the negative pole of diode D2 and the positive pole of diode D8, the negative pole of diode D3 and the positive pole of diode D8, the negative pole of diode D4 is connected to together with the positive pole of diode D9 and is connected with four output lines of three-phase and four-line residual current circuit breaker (as long as four output lines of three-phase and four-line residual current circuit breaker have any two lines to have voltage so respectively, power positive cathode just has the voltage that residual current circuit breaker can be made normally to work).
As shown in Figure 4, described electric leakage dropout control circuit comprises control chip IC1 and control switch, and described control chip IC1 is SN54123, and described control switch is controllable silicon SCR.Electric leakage dropout control circuit comprises release COIL1, controllable silicon SCR, control chip IC1, resistance R1, electric capacity C1, C2, C4, C5, C6, release COIL1 one end is connected with power supply, the other end is connected to controllable silicon SCR negative electrode and is connected with resistance R1, through resistance R1 step-down, 8 pin receiving control chip IC1 after electric capacity C1 filtering are powered to control chip IC1, electric capacity C4, C5 is connected with 7 pin of control chip IC1 and is connected to the trigger electrode of controllable silicon SCR, 4 of control chip IC1, 5 pin link together through electric capacity C6 ground connection, the 3 pin ground connection of control chip IC1, the 1 foot meridian capacitor C2 ground connection of control chip IC1, the other end ground connection of electric capacity C5, release is connect after the 8 pin series resistance R1 of described control chip IC1.
As shown in Figure 5, described electric-leakage detection circuit comprises sampling resistor R2, bidirectional diode D5 and L-type filter circuit, described sampling resistor R2 is connecting with L-type filter circuit with after bidirectional diode D5 parallel connection, described L-type filter circuit comprises electric capacity C3 and resistance R3,2 pin of resistance R3 connection control chip IC 1, the two ends of sampling resistor R2, electric capacity C3 are connected in parallel between 1 pin of control chip IC1 and 2 pin.
The piezo-resistance of this protective circuit adopts radial (star) connection to make it always keep two piezo-resistance series connection when absorbing lightning surge between three-phase and four-line residual current circuit breaker each line, and the capacity that piezo-resistance can be made like this to absorb lightning surge is multiplied.The power of piezo-resistance and quantity can be reduced during circuit design and original effect can be reached, whole pcb board cost being reduced, volume-diminished.
This protective circuit is adopted to have following beneficial effect: anti-lightning surge capacity is strong; Can normally work under power failure condition; Electric leakage signal detects reliable and stable; Whole circuit design is simple, electromagnetic compatibility characteristic is high, and volume is little, at the bottom of production cost.
Embodiment should not be considered as restriction of the present utility model, any improvement done based on spirit of the present utility model, all should at protection range of the present utility model.
Claims (8)
1. a residual current circuit breaker lightning surge protection circuit; it comprises four lines and exports; be electrically connected with anti-lightning surge circuit, four line power taking power circuits, the dropout control circuit that leaks electricity, electric-leakage detection circuit successively; it is characterized in that: described anti-lightning surge circuit comprises 4 piezo-resistances; described piezo-resistance adopts radial connection to be connected between four lines outputs, makes the piezo-resistance after there is two series connection between any two lines outputs.
2. residual current circuit breaker lightning surge protection circuit according to claim 1, is characterized in that, one end of 4 piezo-resistances links together, and its other end exports with four lines respectively and is electrically connected.
3. residual current circuit breaker lightning surge protection circuit according to claim 1, is characterized in that, described electric leakage dropout control circuit comprises control chip IC1 and control switch, and described control chip IC1 is SN54123.
4. residual current circuit breaker lightning surge protection circuit according to claim 3, is characterized in that, described control switch is controllable silicon SCR.
5. residual current circuit breaker lightning surge protection circuit according to claim 4; it is characterized in that, 7 pin of described control chip IC1 are connected with the trigger electrode of controllable silicon SCR, and the anode of described controllable silicon SCR is connected with release; its minus earth, 8 pin of control chip IC1 connect release.
6. residual current circuit breaker lightning surge protection circuit according to claim 5, is characterized in that, connects release after the 8 pin series resistance R1 of described control chip IC1.
7. residual current circuit breaker lightning surge protection circuit according to claim 1; it is characterized in that; described electric-leakage detection circuit comprises sampling resistor R2, bidirectional diode D5 and L-type filter circuit, and described sampling resistor R2 is connecting with L-type filter circuit with after bidirectional diode D5 parallel connection.
8. residual current circuit breaker lightning surge protection circuit according to claim 7, is characterized in that, described L-type filter circuit comprises electric capacity C3 and resistance R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445179.1U CN204794065U (en) | 2015-06-26 | 2015-06-26 | Electric leakage circuit breaker thunderbolt surge protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445179.1U CN204794065U (en) | 2015-06-26 | 2015-06-26 | Electric leakage circuit breaker thunderbolt surge protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794065U true CN204794065U (en) | 2015-11-18 |
Family
ID=54534048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520445179.1U Expired - Fee Related CN204794065U (en) | 2015-06-26 | 2015-06-26 | Electric leakage circuit breaker thunderbolt surge protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711937A (en) * | 2016-12-26 | 2017-05-24 | 浙江万马新能源有限公司 | A-type earth leakage protection circuit of alternating-current charging pile |
| CN110246731A (en) * | 2018-06-13 | 2019-09-17 | 华通机电股份有限公司 | The preposition safety release device of magnetic multi-coil in the same direction |
-
2015
- 2015-06-26 CN CN201520445179.1U patent/CN204794065U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711937A (en) * | 2016-12-26 | 2017-05-24 | 浙江万马新能源有限公司 | A-type earth leakage protection circuit of alternating-current charging pile |
| CN110246731A (en) * | 2018-06-13 | 2019-09-17 | 华通机电股份有限公司 | The preposition safety release device of magnetic multi-coil in the same direction |
| CN110246731B (en) * | 2018-06-13 | 2020-11-03 | 华通机电股份有限公司 | Magnetic equidirectional multi-coil front safety release |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |