CN100437646C - Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker - Google Patents
Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker Download PDFInfo
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- CN100437646C CN100437646C CNB2006100501829A CN200610050182A CN100437646C CN 100437646 C CN100437646 C CN 100437646C CN B2006100501829 A CNB2006100501829 A CN B2006100501829A CN 200610050182 A CN200610050182 A CN 200610050182A CN 100437646 C CN100437646 C CN 100437646C
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Abstract
The present invention relates to an alarm-only non-shut-brake electric leakage alarming module of an electric leakage circuit breaker, which comprises an input circuit and a switch circuit. The present invention is characterized in that the input circuit receives the output signal of the electric leakage circuit breaker and is applied to a coil of a first micro DC relay through a rectifier, a voltage stabilizing circuit and a filter circuit. An external power of the switch circuit passing through the rectifier, the voltage stabilizing circuit, the filter circuit, a branch circuit formed by the parallel connection of a normally open contact of the first micro DC relay and a normally open contact of a second micro DC relay is applied to coils of a second micro DC relay and a third micro DC relay. A normally open contact and a normally closed contact of the third micro DC relay respectively output a signal controlling the normal work and an alarm signal. The electric leakage module of the present invention can be suitable for all kinds of electric leakage circuit breakers and has the advantages of low cost, small volume, high reliability and remote control.
Description
Technical field
The present invention relates to the servicing unit of residual current circuit breaker.The leakage-current alarm module that specifically a kind of residual current circuit breaker is only reported to the police non-shut-brake.
Background technology
Residual current circuit breaker is widely used in fire-fighting electric power system and the supervisory system, stipulate at " Code for design of automatic fire alarm systems " 6.3.1.8 bar: " fire protection control room is after confirming that fire takes place; should be able to cut off the non-fire-fighting power supply at relevant position, and connects alarm device and fire disaster emergency illumination and sign for safe evacuation lamp." in fire-fighting system, require residual current circuit breaker that the leakage-current alarm signal is arranged when having supply line that electric leakage is arranged, but do not want separating brake.
Similar products in the market are all based on semiconductor components and devices, and major defect is the supply line of inapplicable China, and the anti overvoltage overcurrent capability is relatively poor, and antijamming capability is not strong, heatproof, moisture-proof profit poor performance, and reliability is lower.
Summary of the invention
The present invention will solve is that existing residual current circuit breaker only reports to the police the poor reliability of leakage-current alarm module, the major defect of excess current superpotential ability non-shut-brake.The technical scheme that addresses the above problem employing is: the leakage-current alarm module that residual current circuit breaker is only reported to the police non-shut-brake, comprise input circuit and switching circuit, it is characterized in that described input circuit receives the residual current circuit breaker output signal, and be applied to by rectifier, mu balanced circuit and filtering circuit on the coil of first micro DC relay; Described switching circuit is after-applied on the coil of described second micro DC relay and the 3rd micro DC relay by the branch road that the normally open contact of the normally open contact of first micro DC relay and second micro DC relay is in parallel by rectifier, mu balanced circuit, filtering circuit and one with external power supply, and satisfy: when the normally open contact of first micro DC relay disconnects, the coil no power of second micro DC relay and the 3rd micro DC relay; The normally open contact of described the 3rd micro DC relay and normally closed interlock are exported control operate as normal signal and alerting signal respectively.
Leakage-current alarm module of the present invention as main control element, can be sent the operate as normal signal with the midget relay of high reliability (electricity longevity can reach more than 200,000 times) when not leaking electricity.When there was electric leakage in supply line and surpasses setting valve (as 500mA), residual current circuit breaker was sent alerting signal.The present invention's applicable all residual current circuit breaker of module of leaking electricity, and cost is low, volume is little, and the reliability height can also carry out Long-distance Control.
Leakage-current alarm module of the present invention, described input circuit also comprises anti-jamming circuit.
Leakage-current alarm module of the present invention, described switching circuit also comprises anti-jamming circuit.
Leakage-current alarm module of the present invention, described each anti-jamming circuit by resistance and electric capacity parallel connection after resistance in series constitute.
Leakage-current alarm module of the present invention, described each mu balanced circuit is made of a stabilivolt that is connected in parallel on rectifier output end.
Leakage-current alarm module of the present invention, described each filtering circuit is made of an electric capacity that is connected in parallel on rectifier output end.
Leakage-current alarm module of the present invention, also be in series with the normally closed interlock of second micro DC relay in the described input circuit, after the second micro DC relay adhesive, disconnect first micro DC relay, make first micro DC relay be in off-position, can improve the serviceable life of first micro DC relay.
Leakage-current alarm module of the present invention, the branch road that the normally open contact of the normally open contact of described first micro DC relay and second micro DC relay is in parallel, can be connected between rectifier output end and the mu balanced circuit, perhaps be connected between mu balanced circuit and the filtering circuit, also can be connected between the second minisize dc relay.The normally open contact of described second micro DC relay is used for the coil lock of second micro DC relay is fixed on "on" position.
Leakage-current alarm module of the present invention also is in series with reset button in the described switching circuit, can remove alerting signal, and makes the leakage-current alarm module be returned to original state.
Leakage-current alarm module of the present invention, the two ends of described second micro DC relay indicating circuit by resistance and light emitting diode series connection also in parallel can directly be indicated on residual current circuit breaker.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the leakage-current alarm module electric leakage signal input circuit electrical schematic diagram that residual current circuit breaker of the present invention is only reported to the police non-shut-brake.
Fig. 2 is that the leakage-current alarm module electric leakage signal that residual current circuit breaker of the present invention is only reported to the police non-shut-brake switches electrical schematic diagram.
Fig. 3 is the leakage-current alarm module electric leakage signal warning output electrical schematic diagram that residual current circuit breaker of the present invention is only reported to the police non-shut-brake.
Embodiment
Leakage-current alarm module of the present invention is arranged on the printed-wiring board (PWB), is fixed on the cover plate by printed-wiring board (PWB).The leakage-current alarm module comprises input circuit and switching circuit.
With reference to Fig. 1, the input circuit of leakage-current alarm module of the present invention, resistance R 3 and capacitor C 1 back resistance in series R1 in parallel form anti-jamming circuit, are used to absorb interference current, protection rectifier VD1.This anti-jamming circuit one end links to each other with an end of the output signal of residual current circuit breaker, and the other end is connected to the input end of rectifier VD1.Connect between another input end of described rectifier VD1 and the other end of the output signal of the residual current circuit breaker normally closed interlock of micro DC relay KM2.The coil of output terminal shunt regulator tube VS1, capacitor C 3 and the micro DC relay KM1 of described rectifier VD1.
The alternating current output signal of residual current circuit breaker is adjusted into direct current by rectifier VD1 with alternating current through behind the anti-jamming circuit, and by stabilivolt VS1 voltage stabilizing, capacitor C 3 filtering offer DC voltage the coil of midget relay KM1.
With reference to Fig. 2, the switching circuit of leakage-current alarm module of the present invention, resistance R 4 and capacitor C 2 back resistance in series R2 in parallel form anti-jamming circuit, are used to absorb interference current, protection rectifier VD2.One end P1 of described anti-jamming circuit one termination external power supply, the other end is connected to the input end of rectifier VD2; Reset button SB of series connection between another input end of described rectifier VD2 and the other end P2 of external power supply; The output terminal of described rectifier VD2 is connected to the end of coil of coil, the micro DC relay KM3 of stabilivolt VS2, capacitor C 4, micro DC relay KM2, and another output terminal is connected to the other end of stabilivolt VS2, capacitor C 4 and the normally open contact of micro DC relay KM1 and micro DC relay KM2; The other end of the normally open contact of described micro DC relay KM1 and micro DC relay KM2 is connected to the other end of the coil of micro DC relay KM2 and micro DC relay KM3.The indicating circuit that constitutes by resistance R 5 and light emitting diode V1 series connection also in parallel at the two ends of the coil of described micro DC relay KM2.
External AC power supply is adjusted into direct current by rectifier VD2 with alternating current through behind the anti-jamming circuit, by stabilivolt VS2 voltage stabilizing, capacitor C 4 filtering offer micro DC relay KM2 and micro DC relay KM3 and red light emitting diodes V1 and resistor R 5 with DC voltage.Button SB is the releasing element that alerting signal disappears.
With reference to Fig. 3, the output loop of residual current circuit breaker of the present invention, the normally open contact output control leakage-current alarm signal HA of micro DC relay KM3, its normally closed interlock output control operate as normal indicator signal HL.
Only the report to the police principle of work of non-shut-brake electric leakage module of the electric leakage of residual current circuit breaker of the present invention is: when supply line did not have electric leakage signal, external indicator signal HL (user selects each coloured light or sound for use by the relevant requirements of fire-fighting system or supervisory system) sent the operate as normal signal.
When there is electric leakage signal in supply line and surpasses setting valve (as 500mA), residual current circuit breaker output AC 150V～230V voltage is given the input circuit of leakage-current alarm module, by resistance R 1, resistance 3, the normally closed interlock of capacitor C 1 and micro DC relay KM2, give rectifier VD1 rectification, stabilivolt VS1 voltage stabilizing, capacitor C3 filtering, give midget relay KM1 coil power supply, micro DC relay KM1 is in the normally open contact closure of signal switching circuit.This moment, leakage-current alarm module electric leakage signal switching circuit was connected, and the coil of micro DC relay KM2, micro DC relay KM3 is switched on simultaneously, and micro DC relay KM2 is in the normally open contact closure of signal switching circuit, the self-locking of signal switching circuit.Simultaneously, the normally closed interlock of micro DC relay KM2 in the signal input circuit disconnects, the outage of signal input circuit, and micro DC relay KM1 coil blackout, its normally open contact in the signal switching circuit also disconnects.Micro DC relay KM3 disconnects at the normally closed interlock of alerting signal output loop, indicator signal HL circuit normal power supply blackout, and micro DC relay KM3 is in the normally open contact closure of alerting signal output loop, and alerting signal HA sends the leakage-current alarm signal.
After supply line's electric leakage newspaper fault is got rid of, press stop button SB, micro DC relay KM2, micro DC relay KM3 coil blackout, micro DC relay KM2 are in the normally closed interlock closure of electric leakage signal input circuit, and its loop is in the signal wait.Micro DC relay KM2 disconnects at the normally open contact of leakage-current alarm output loop, removes self-locking.The normally open contact of micro DC relay KM3 in the leakage-current alarm loop disconnects, and alerting signal HA removes alerting signal.The normally closed interlock closure of micro DC relay KM3 in the leakage-current alarm loop, indicator signal HL circuit normal power supply signal recovers.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (10)
1, residual current circuit breaker only reports to the police the leakage-current alarm module non-shut-brake, comprise input circuit and switching circuit, it is characterized in that described input circuit receives the residual current circuit breaker output signal, and be applied to by rectifier VD1, mu balanced circuit and filtering circuit on the coil of the first micro DC relay KM1; Described switching circuit is after-applied on the coil of described second micro DC relay KM2 and the 3rd micro DC relay KM3 by the branch road that the normally open contact of the normally open contact of the first micro DC relay KM1 and the second micro DC relay KM2 is in parallel by rectifier VD2, mu balanced circuit, filtering circuit and one with external power supply, and satisfy: when the normally open contact of the first micro DC relay KM1 disconnects, the coil no power of the second micro DC relay KM2 and the 3rd micro DC relay KM3; The normally open contact of described the 3rd micro DC relay KM3 and normally closed interlock are exported control operate as normal signal and alerting signal respectively.
2, leakage-current alarm module as claimed in claim 1 is characterized in that described input circuit also comprises anti-jamming circuit.
3, leakage-current alarm module as claimed in claim 2 is characterized in that described switching circuit also comprises anti-jamming circuit.
4, leakage-current alarm module as claimed in claim 3 is characterized in that resistance in series constitutes after described each anti-jamming circuit is by resistance and electric capacity parallel connection.
5, leakage-current alarm module as claimed in claim 1 is characterized in that described each mu balanced circuit is made of a stabilivolt that is connected in parallel on rectifier output end.
6, leakage-current alarm module as claimed in claim 1 is characterized in that described each filtering circuit is made of an electric capacity that is connected in parallel on rectifier output end.
7,, it is characterized in that also being in series with in the described input circuit normally closed interlock of the second micro DC relay KM2 as any one described leakage-current alarm module of claim 1-6.
8, leakage-current alarm module as claimed in claim 1 is characterized in that the branch road that the normally open contact of the normally open contact of the described first micro DC relay KM1 and the second micro DC relay KM2 is in parallel is connected between the coil and filtering circuit of the described second micro DC relay KM2.
9, leakage-current alarm module as claimed in claim 1 is characterized in that also being in series with in the described switching circuit reset button SB.
10, leakage-current alarm module as claimed in claim 1, the two ends that it is characterized in that the described second micro DC relay KM2 a indicating circuit also in parallel by resistance R 5 and light emitting diode V1 series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100501829A CN100437646C (en) | 2006-04-04 | 2006-04-04 | Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100501829A CN100437646C (en) | 2006-04-04 | 2006-04-04 | Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1845188A CN1845188A (en) | 2006-10-11 |
| CN100437646C true CN100437646C (en) | 2008-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100501829A Active CN100437646C (en) | 2006-04-04 | 2006-04-04 | Alarm-only non-shut-brake electric leakage alarming module of electric leakage circuit breaker |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249095B (en) * | 2016-08-01 | 2022-11-18 | 华通机电股份有限公司 | Small circuit breaker leakage alarm non-tripping control circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763806A (en) * | 1993-08-30 | 1995-03-10 | Nippondenso Co Ltd | Electric leakage detector |
| JPH10248156A (en) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | Circuit breaker with leak alarm |
| CN2703349Y (en) * | 2004-03-09 | 2005-06-01 | 谢华跃 | Leakage circuit breaker with warning device |
-
2006
- 2006-04-04 CN CNB2006100501829A patent/CN100437646C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763806A (en) * | 1993-08-30 | 1995-03-10 | Nippondenso Co Ltd | Electric leakage detector |
| JPH10248156A (en) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | Circuit breaker with leak alarm |
| CN2703349Y (en) * | 2004-03-09 | 2005-06-01 | 谢华跃 | Leakage circuit breaker with warning device |
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| Publication number | Publication date |
|---|---|
| CN1845188A (en) | 2006-10-11 |
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Application publication date: 20061011 Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of invention: Leakage alarm module of residual current circuit breaker Granted publication date: 20081126 License type: Common License Record date: 20201021 |
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