CN201282084Y - Circuit for implementing circuit breaker fault indication - Google Patents
Circuit for implementing circuit breaker fault indication Download PDFInfo
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- CN201282084Y CN201282084Y CNU2008201599710U CN200820159971U CN201282084Y CN 201282084 Y CN201282084 Y CN 201282084Y CN U2008201599710 U CNU2008201599710 U CN U2008201599710U CN 200820159971 U CN200820159971 U CN 200820159971U CN 201282084 Y CN201282084 Y CN 201282084Y
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Abstract
A circuit which can realize broken circuit failure indication belongs to the technical field of low-pressure electronics. The circuit comprises a charging circuit, a DC-DC circuit, a data storage circuit and an indication circuit, wherein, the charging circuit is connected with the DC-DC circuit; the DC-DC circuit is connected with the data storage circuit; the data storage circuit is connected with the indication circuit; and the data storage circuit is further connected with an external microcontroller. The circuit has the advantages that the structure is adopted to realize failure indication of a circuit breaker, so that the power supply does not need battery feed, the maintenance is convenient, environmental pollution is reduced, and miniaturization is realized; the voltage increasing type DC-DC is adopted at the same time, so as to suit the change of the voltage of a spare power supply within a wider range; and the structure of the data storage circuit is relatively simple.
Description
Technical field
The utility model relates to a kind of circuit of indication, and particularly a kind of circuit of realizing the circuit breaker failure indication belongs to the low voltage electrical apparatus technology field.
Background technology
Circuit breaker on the present market does not generally have the indication of action failure type, particularly in little shell frame circuit breaker is not have the fault type indication.On big shell frame, also seldom have.Usually, if having the circuit breaker of fault type indication, general way is to adopt powered battery, provides back-up source by battery after fault is threaded off, and gives me a little bright corresponding malfunction indicator lamp.Adopt the sort circuit deficiency to be: volume of battery is generally bigger, is unfavorable for miniaturization; The maintenance inconvenience of battery; Adopt battery to cause environmental pollution easily; And circuit structure complexity.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of circuit of realizing the circuit breaker failure indication is provided, and the volume miniaturization reduce environmental pollution, and circuit structure is simple.
The objective of the invention is to finish like this, a kind of circuit of realizing the circuit breaker failure indication, it is characterized in that: it comprises charging circuit, the DC-DC circuit, data are preserved circuit and indicating circuit, and charging circuit is connected with the DC-DC circuit, and the DC-DC circuit is preserved circuit with data and is connected, data are preserved circuit and are connected with indicating circuit, and data are preserved circuit and are connected with external microcontroller.
Charging circuit described in the utility model is made of diode D1, constant current tube VC1 and capacitor C 1, the negative pole of diode D1 is connected with the end of constant current tube VC1, the other end of constant current tube VC1 is connected with the DC-DC circuit with an end of capacitor C 1, the positive pole of diode D1 meets power supply VCC, the other end ground connection of capacitor C 1.
DC-DC circuit described in the utility model is made of inductance L 1, DC-DC chip U1 and capacitor C 2,1,3 pin of DC-DC chip U1 are connected with charging circuit with an end of inductance L 1,5 pin of DC-DC chip U1 are connected with the other end of inductance L 1,4 pin of DC-DC chip U1 are preserved circuit with an end of capacitor C 2 and data and are connected 2 pin of DC-DC chip U1 and the other end ground connection of capacitor C 2.
Data described in the utility model are preserved circuit and are made of diode D2, D3 and chip U2, the positive pole of diode D2 is connected with the DC-DC circuit, the negative pole of diode D2 is connected with the negative pole of diode D3 and 1,14,13 pin of chip U2,3 pin of chip U2 connect indicating circuit, 2,7 pin of chip U2 connect external microcontroller, the positive pole of diode D3 meets power supply VCC, 6, the 9 pin ground connection of chip U2.
Indicating circuit described in the utility model is made of at least one resistance R 1 and at least one LED 1, one end of resistance R 1 is connected with 3 pin that data are preserved the chip U2 of circuit, the other end of resistance R 1 is connected with the positive pole of LED 1, LED 1 minus earth.
The utility model is set up a button SW1 between described charging circuit and DC-DC circuit.
DC-DC chip U1 described in the utility model adopts step-up DC-DC chip.
The utility model is realized the faulty indication of circuit breaker owing to adopt foregoing circuit, and power supply need not used powered battery, easy to maintenance, reduce environmental pollution, and miniaturization, adopt step-up DC-DC simultaneously, the voltage that can adapt to back-up source changes in the scope of broad.The structure that data are preserved circuit is simpler.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model
Fig. 3 is another embodiment of the present utility model
Concrete enforcement
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to the utility model scheme embodiment.
See also Fig. 1 circuit theory diagrams of the present utility model.A kind of circuit of realizing the circuit breaker failure indication, diode D1, constant current tube VC1, capacitor C 1 are formed charging circuit, diode D1 is the back discharge in order to prevent to cut off the power supply, and the effect of constant current tube VC1 is that substantially invariable charging current is provided in the charge voltage range of broad; Inductance L 1, capacitor C 2 and DC-DC chip U1 form the DC-DC circuit, and diode D2, D3 and chip U2 form data and preserve circuit, and the effect of diode D2, D3 is the refluence that prevents electric current, and resistance R 1, LED 1 are formed failure indicating circuit.Circuit breaker normal during electric work, power supply charges to capacitor C 1 by diode D1 and constant current tube VC1, is charged to certain value within a certain period of time.After microcontroller on the electronic trip unit in being built in circuit breaker (MCU) detects current failure, when sending the dropout action command, by microcontroller the data of action failure type being write data preserves the chip U2 (FM11) of circuit and preserves, like this, after circuit breaker action outage, even microcontroller is not worked, the power vd D that provides data to preserve circuit after also being boosted by DC-DC chip U1 (MAX1724) by charging circuit, data are preserved circuit and are got and the fault type indicator light of correspondence is lighted after electric.
Another embodiment of the present utility model sets up a button SW1 between charging circuit and DC-DC circuit, button SW1 one end is connected with an end of the capacitor C 1 of charging circuit and the end of constant current tube VC1, the button SW1 other end is connected with an end of 1 pin, 3 pin and the inductance L 1 of the chip U1 of DC-DC circuit, realize being connected of charging circuit and DC-DC circuit by pressing the button SW1, the power vd D that provides data to preserve circuit after charging circuit boosts by DC-DC chip U1, data are preserved circuit and are got and the fault type indicator light of correspondence is lighted after electric.The effect that increases button SW1 is to make when needing to check faulty indication after the circuit breaker outage to press the button, and can save the discharge charge of capacitor C 1, and the discharge period is increased.
The utility model is owing to adopt foregoing circuit, realize the faulty indication of circuit breaker, power supply need not used powered battery, easy to maintenance, reduce environmental pollution, and miniaturization, step-up DC-DC adopted simultaneously, the voltage that can adapt to back-up source changes in the scope of broad, and the structure that data are preserved circuit is simpler.
Claims (7)
1, a kind of circuit of realizing the circuit breaker failure indication, it is characterized in that: it comprises charging circuit, the DC-DC circuit, data are preserved circuit and indicating circuit, charging circuit is connected with the DC-DC circuit, the DC-DC circuit is preserved circuit with data and is connected, and data are preserved circuit and are connected with indicating circuit, and data are preserved circuit and are connected with external microcontroller.
2, the circuit of realization circuit breaker failure indication according to claim 1, it is characterized in that described charging circuit is made of diode D1, constant current tube VC1 and capacitor C 1, the negative pole of diode D1 is connected with the end of constant current tube VC1, the other end of constant current tube VC1 is connected with the DC-DC circuit with an end of capacitor C 1, the positive pole of diode D1 meets power supply VCC, the other end ground connection of capacitor C 1.
3, the circuit of realization circuit breaker failure indication according to claim 1, it is characterized in that described DC-DC circuit is made of inductance L 1, DC-DC chip U1 and capacitor C 2,1,3 pin of DC-DC chip U1 are connected with charging circuit with an end of inductance L 1,5 pin of DC-DC chip U1 are connected with the other end of inductance L 1,4 pin of DC-DC chip U1 are preserved circuit with an end of capacitor C 2 and data and are connected 2 pin of DC-DC chip U1 and the other end ground connection of capacitor C 2.
4, the circuit of realization circuit breaker failure indication according to claim 1, it is characterized in that described data preservation circuit is made of diode D2, D3 and chip U2, the positive pole of diode D2 is connected with the DC-DC circuit, the negative pole of diode D2 is connected with the negative pole of diode D3 and 1,14,13 pin of chip U2,3 pin of chip U2 connect indicating circuit, 2,7 pin of chip U2 connect external microcontroller, and the positive pole of diode D3 meets power supply VCC, 6, the 9 pin ground connection of chip U2.
5, the circuit of realization circuit breaker failure indication according to claim 1, it is characterized in that described indicating circuit is made of at least one resistance R 1 and at least one LED 1, one end of resistance R 1 is connected with 3 pin that data are preserved the chip U2 of circuit, the other end of resistance R 1 is connected with the positive pole of LED 1, LED 1 minus earth.
6, the circuit of realization circuit breaker failure indication according to claim 1 is characterized in that setting up a button SW1 between described charging circuit and DC-DC circuit.
7, the circuit of realization circuit breaker failure indication according to claim 3 is characterized in that described DC-DC chip U1 adopts step-up DC-DC chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201599710U CN201282084Y (en) | 2008-09-24 | 2008-09-24 | Circuit for implementing circuit breaker fault indication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201599710U CN201282084Y (en) | 2008-09-24 | 2008-09-24 | Circuit for implementing circuit breaker fault indication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282084Y true CN201282084Y (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201599710U Expired - Lifetime CN201282084Y (en) | 2008-09-24 | 2008-09-24 | Circuit for implementing circuit breaker fault indication |
Country Status (1)
| Country | Link |
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| CN (1) | CN201282084Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155326A (en) * | 2010-10-20 | 2013-06-12 | 施耐德电气美国股份有限公司 | Electronic circuit breaker with fault indication and secondary power supply |
| CN103824731A (en) * | 2014-03-07 | 2014-05-28 | 国家电网公司 | Method for implementing feedback function of circuit breaker |
| CN104040666A (en) * | 2011-10-25 | 2014-09-10 | Abb技术有限公司 | Direct current breaker and electrical power system comprising such direct current breaker |
-
2008
- 2008-09-24 CN CNU2008201599710U patent/CN201282084Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155326A (en) * | 2010-10-20 | 2013-06-12 | 施耐德电气美国股份有限公司 | Electronic circuit breaker with fault indication and secondary power supply |
| CN104040666A (en) * | 2011-10-25 | 2014-09-10 | Abb技术有限公司 | Direct current breaker and electrical power system comprising such direct current breaker |
| CN103824731A (en) * | 2014-03-07 | 2014-05-28 | 国家电网公司 | Method for implementing feedback function of circuit breaker |
| CN103824731B (en) * | 2014-03-07 | 2016-04-20 | 国家电网公司 | A kind of method realizing circuit breaker feedback function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090729 |
|
| CX01 | Expiry of patent term |