CN203589689U - Under-voltage tripper circuit for miniature circuit breaker - Google Patents
Under-voltage tripper circuit for miniature circuit breaker Download PDFInfo
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- CN203589689U CN203589689U CN201320607552.XU CN201320607552U CN203589689U CN 203589689 U CN203589689 U CN 203589689U CN 201320607552 U CN201320607552 U CN 201320607552U CN 203589689 U CN203589689 U CN 203589689U
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Abstract
The utility model relates to an under-voltage tripper circuit for a miniature circuit breaker. The under-voltage tripper circuit for the miniature circuit breaker comprises a power supply circuit, and is characterized by also comprising an under-voltage detection and control circuit and a tripping circuit, wherein the power supply circuit, the under-voltage detection and control circuit and the tripping circuit are connected in sequence. The under-voltage detection and control circuit consists of a voltage detector U1, a resistor R4, a resistor R5, a resistor R6 and a capacitor C2; the voltage detector U1 is connected with the resistor R5 in series after being connected with the resistor R4 in parallel; the resistor R6 and the resistor R5 are connected in series; the anode of the capacitor C2 is connected with one end of the resistor R6; the cathode of the capacitor C2 is connected with the negative electrode of silicon controlled D6 in the tripping circuit; and the other end of the resistor R6 is connected with a control electrode of the silicon controlled D6 in the tripping circuit. The under-voltage tripper circuit for the miniature circuit breaker provided by the utility model has the advantages that the working temperature rise of a tripper is reduced, the fluctuation range of an under-voltage protection threshold value is small, the power consumption is low, the operating characteristic is stable, the circuit design is simple, the EMC (electromagnetic compatibility) resistance is strong, and the reliability is high, and meets the actual demand of the under-voltage tripper for the miniature circuit breaker.
Description
Technical field
The utility model relates to release circuit field, more particularly, relates to a kind of miniature circuit breaker device for under-voltage releasing equipment circuit.
Background technology
Fast development along with China's industry and civil buildings, and more and more higher to the requirement for safe distribution of electric power, when electric voltage exception appears in electric power system, during as under-voltage or overvoltage fault, afunction or the permanent damages of power consumption equipment or electrical equipment caused in capital, not only economic loss can be caused, but also disaster accident can be caused.Existing device for under-voltage releasing equipment of breaker circuit adopts following scheme: device for under-voltage releasing equipment circuit is only responsible for the processing of voltage signal, and do not carry out under-voltage judgement, whole under-voltage judgement carrys out matching judgment by the coil suction of release and the elastic force of reaction spring completely, because the suction-combining force consistency of spring force and trip coil is poor, cause under-voltage protection threshold values fluctuation range larger, operating characteristics is stable not, but because circuit is simple, occupy little space, generally by miniature circuit breaker, adopted, as the publication number Chinese utility model patent that is CN201773801U; It is key control unit that another scheme adopts microcontroller; adopt device for under-voltage releasing equipment circuit to realize under-voltage judgement; although it is less to realize under-voltage protection threshold values fluctuation range; operating characteristics is stable; but due to complex circuit designs; take up room large, be not suitable for real work and the design requirement of miniature circuit breaker, as the publication number Chinese utility model patent that is CN102097778A.
Utility model content
The technical problems to be solved in the utility model is, false tripping phenomenon for prior art frequently occurs, under-voltage protection threshold values fluctuation range is large, power consumption is high, operating characteristics is unstable, the defect of complex circuit designs, a kind of miniature circuit breaker device for under-voltage releasing equipment circuit is provided, at least comprises: power circuit; Under-voltage detection and control circuit; Trip circuit; Wherein, described power circuit, under-voltage detection and control circuit, trip circuit are connected successively.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described under-voltage detection and control circuit are by voltage detector U1, resistance R 4, R5, R6, and capacitor C 2 forms; After voltage detector U1 is in parallel with resistance R 4, connect with resistance R 5 again, resistance R 6 is connected with resistance R 5, the positive pole of capacitor C 2 is connected with resistance R 6 one end, the negative electrode of the negative pole of capacitor C 2 and controllable silicon D6 in trip circuit is connected, and the control utmost point of the other end of resistance R 6 and controllable silicon D6 in trip circuit is connected.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described trip circuit is comprised of controllable silicon D6, release Trip, current-limiting resistance R7 and diode D7; After release Trip is in parallel with diode D7, then connect successively with current-limiting resistance R7, controllable silicon D6.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described power circuit is comprised of surge restraint circuit, full-wave rectifying circuit, filter circuit.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described voltage detector U1 refers to HT7050.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described surge restraint circuit further consists of piezo-resistance MYR1.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described full-wave rectifying circuit further consists of diode D1, D2, D3, D4.
In miniature circuit breaker device for under-voltage releasing equipment circuit described in the utility model, described filter circuit further consists of secondary reduction voltage circuit and filter circuit; Described secondary reduction voltage circuit consists of divider resistance R1, R3, resistance R 2, voltage stabilizing didoe D5, and filter circuit consists of capacitor C 1.
Implement miniature circuit breaker device for under-voltage releasing equipment circuit of the present utility model, there is following beneficial effect: adopt the voltage detector with hysteretic characteristic, control silicon controlled conducting and cut-off, avoid causing silicon controlled conducting or cut-off because electrical network disturbs, false judgment is under-voltage so that product false tripping; Power circuit adopts the form of full-wave rectification, the noise while realizing the adhesive of DC power supply driving release reduction release, and the temperature rise that adopts the circuit design reduction power circuit of secondary step-down; Trip circuit adopts the form of release and current-limiting resistance series connection, reduces the work temperature rise of release; Under-voltage protection threshold values fluctuation range is little, low in energy consumption, operating characteristics stable, simple, the anti-EMC performance of circuit design is strong and reliability is high, more meets the actual demand of miniature circuit breaker device for under-voltage releasing equipment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the circuit diagram of the utility model miniature circuit breaker device for under-voltage releasing equipment circuit.
Embodiment
Refer to Fig. 1, Fig. 1 is the circuit diagram of the utility model miniature circuit breaker device for under-voltage releasing equipment circuit.A miniature circuit breaker device for under-voltage releasing equipment circuit, at least comprises: power circuit; Under-voltage detection and control circuit; Trip circuit; Wherein, described power circuit, under-voltage detection and control circuit, trip circuit are connected successively.
Preferably, described under-voltage detection and control circuit are by voltage detector U1, resistance R 4, R5, R6, and capacitor C 2 forms; After voltage detector U1 is in parallel with resistance R 4, connect with resistance R 5 again, resistance R 6 is connected with resistance R 5, the positive pole of capacitor C 2 is connected with resistance R 6 one end, the negative electrode of the negative pole of capacitor C 2 and controllable silicon D6 in trip circuit is connected, and the control utmost point of the other end of resistance R 6 and controllable silicon D6 in trip circuit is connected.
Preferably, described trip circuit is comprised of controllable silicon D6, release Trip, current-limiting resistance R7 and diode D7; After release Trip is in parallel with diode D7, then connect successively with current-limiting resistance R7, controllable silicon D6.
Preferably, described power circuit is comprised of surge restraint circuit, full-wave rectifying circuit, filter circuit.
Preferably, described voltage detector U1 refers to HT7050.
Preferably, described surge restraint circuit further consists of piezo-resistance MYR1.
Preferably, described full-wave rectifying circuit further consists of diode D1, D2, D3, D4.
Preferably, described filter circuit further consists of secondary reduction voltage circuit and filter circuit; Described secondary reduction voltage circuit consists of divider resistance R1, R3, resistance R 2, voltage stabilizing didoe D5, and filter circuit consists of capacitor C 1.
The utility model is by the design of above circuit diagram, there is beneficial effect: one, adopt the voltage detector with hysteretic characteristic, control silicon controlled conducting and cut-off, avoid causing silicon controlled conducting or cut-off because electrical network disturbs, false judgment is under-voltage so that product false tripping; Two, power circuit adopts the form of full-wave rectification, the noise while realizing the adhesive of DC power supply driving release reduction release, and the temperature rise that adopts the circuit design reduction power circuit of secondary step-down; Three, trip circuit adopts the form of release and current-limiting resistance series connection, reduces the work temperature rise of release; Four, under-voltage protection threshold values fluctuation range is little, low in energy consumption, operating characteristics stable, simple, the anti-EMC performance of circuit design is strong and reliability is high, more meets the actual demand of miniature circuit breaker device for under-voltage releasing equipment.
The utility model is described according to specific embodiment, but it will be understood by those skilled in the art that when not departing from the utility model scope, can carry out various variations and be equal to replacement.In addition,, for adapting to the specific occasion of the utility model technology, can carry out many modifications and not depart from its protection range the utility model.Therefore, the utility model is not limited to specific embodiment disclosed herein, and comprises all embodiment that drop into claim protection range.
Claims (6)
1. a miniature circuit breaker device for under-voltage releasing equipment circuit, comprising: power circuit, it is characterized in that, and described miniature circuit breaker device for under-voltage releasing equipment circuit also comprises:
Under-voltage detection and control circuit;
Trip circuit;
Wherein, described power circuit, under-voltage detection and control circuit, trip circuit are connected successively, and described under-voltage detection and control circuit are by voltage detector U1, resistance R 4, R5, R6, and capacitor C 2 forms; After voltage detector U1 is in parallel with resistance R 4, connect with resistance R 5 again, resistance R 6 is connected with resistance R 5, the positive pole of capacitor C 2 is connected with resistance R 6 one end, the negative electrode of the negative pole of capacitor C 2 and controllable silicon D6 in trip circuit is connected, the control utmost point of the other end of resistance R 6 and controllable silicon D6 in trip circuit is connected, and described trip circuit is comprised of controllable silicon D6, release Trip, current-limiting resistance R7 and diode D7; After release Trip is in parallel with diode D7, then connect successively with current-limiting resistance R7, controllable silicon D6.
2. miniature circuit breaker device for under-voltage releasing equipment circuit according to claim 1, is characterized in that, described power circuit is comprised of surge restraint circuit, full-wave rectifying circuit, filter circuit.
3. miniature circuit breaker device for under-voltage releasing equipment circuit according to claim 2, is characterized in that, described voltage detector U1 refers to HT7050.
4. miniature circuit breaker device for under-voltage releasing equipment circuit according to claim 3, is characterized in that, described surge restraint circuit further consists of piezo-resistance MYR1.
5. miniature circuit breaker device for under-voltage releasing equipment circuit according to claim 4, is characterized in that, described full-wave rectifying circuit further consists of diode D1, D2, D3, D4.
6. miniature circuit breaker device for under-voltage releasing equipment circuit according to claim 5, is characterized in that, described filter circuit further consists of secondary reduction voltage circuit and filter circuit; Described secondary reduction voltage circuit consists of divider resistance R1, R3, resistance R 2, voltage stabilizing didoe D5, and filter circuit consists of capacitor C 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607552.XU CN203589689U (en) | 2013-09-30 | 2013-09-30 | Under-voltage tripper circuit for miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607552.XU CN203589689U (en) | 2013-09-30 | 2013-09-30 | Under-voltage tripper circuit for miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203589689U true CN203589689U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607552.XU Expired - Fee Related CN203589689U (en) | 2013-09-30 | 2013-09-30 | Under-voltage tripper circuit for miniature circuit breaker |
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| CN (1) | CN203589689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500982A (en) * | 2013-09-30 | 2014-01-08 | 长城电器集团有限公司 | Under-voltage tripper circuit for miniature circuit breaker |
-
2013
- 2013-09-30 CN CN201320607552.XU patent/CN203589689U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500982A (en) * | 2013-09-30 | 2014-01-08 | 长城电器集团有限公司 | Under-voltage tripper circuit for miniature circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170821 Address after: 2-1 No. 325000 Zhejiang North white elephant Yueqing White Town Road (South) Patentee after: Zhejiang Kai FA Electric Co., Ltd. Address before: 2-1 No. 325000 Zhejiang North white elephant Yueqing White Town Road Patentee before: CNC Electric Group Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 No. 2-1 Baixiang Avenue, Beibeixiang Town, Yueqing City, Zhejiang Province (South Building) Patentee after: Great Wall Electrical Appliance Group Zhejiang Technology Co., Ltd. Address before: 325000 No. 2-1 Baixiang Avenue, Beibeixiang Town, Yueqing City, Zhejiang Province (South Building) Patentee before: Zhejiang Kai FA Electric Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20200930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |