CN203151072U - Intelligent molded case circuit breaker undervoltage tripping control module - Google Patents
Intelligent molded case circuit breaker undervoltage tripping control module Download PDFInfo
- Publication number
- CN203151072U CN203151072U CN 201320125206 CN201320125206U CN203151072U CN 203151072 U CN203151072 U CN 203151072U CN 201320125206 CN201320125206 CN 201320125206 CN 201320125206 U CN201320125206 U CN 201320125206U CN 203151072 U CN203151072 U CN 203151072U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- connects
- circuit breaker
- voltage
- Prior art date
- 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
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides an intelligent molded case circuit breaker undervoltage tripping control module which comprises an AC and DC conversion circuit, a reference voltage circuit, a comparator, a triode and three resistors. An input end of the AC and DC conversion circuit is connected with an AC power supply. A first resistor and a second resistor are in series connection and then are connected with the output voltage of the AC and DC conversion circuit. A series connection point of the two resistors is connected with a negative input end of the comparator. A positive input end of the comparator is connected with an output end of the reference voltage circuit, and an output end of the comparator is connected with a base electrode of the triode. A collector of the triode is connected with a positive output end of the AC and DC conversion circuit, and an emitter is connected to a negative output end of the AC and DC conversion circuit through a flux converter. A third resistor is a lower bias resistor. According to the intelligent moulded case circuit breaker shunt trip control module, by using the original flux converter in the moulded case circuit breaker, a circuit breaker mechanism is tripped, an electromagnetic coil in a traditional undervoltage tripping device is saved, the module does not occupy the internal space of the circuit breaker, and a condition is created for the installation of other accessories.
Description
Technical field
The utility model relates to the circuit that a kind of time control breaker mechanism that can be lower than set point at the voltage of distribution line is threaded off, and belongs to the switching technique field.
Background technology
The intelligent plastic housing circuit breaker is common industry and civilian power distribution protection device, can realize the accurate protection of distribution line overload and short trouble.The central component of intelligent plastic housing circuit breaker is intelligent electrical apparatus release, intelligent electrical apparatus release is mainly formed (referring to Fig. 4) by current transformer, intelligent controller, magnetic flow convertor three parts, its operation principle is: current transformer is passed to intelligent controller with detected signal data, intelligent controller is by computing, analysis, judgement, send signal and give magnetic flow convertor, magnetic flow convertor promotes the action of circuit breaker draw bar, and the intelligent plastic housing circuit breaker tripping is disconnected.
Breaker of plastic casing generally is equipped with a kind of in the annexes such as under-voltage release, shunt release, auxiliary contact, Alarm contactor, sometimes then require breaker of plastic casing that in the above-mentioned annex any two kinds are installed simultaneously, but because the intelligent plastic housing circuit breaker has been installed the intelligent controller hardware circuit, and the electromagnetic force that existing shunt release adopts solenoid to produce drives the breaker mechanism dropout, need occupation space bigger, therefore intelligent plastic housing circuit breaker inside has not had enough spaces to hold two groups of annexes, can not satisfy user's requirement in this respect.。
The utility model content
The purpose of this utility model is the drawback at prior art, provides a kind of intelligent plastic housing circuit breaker undervoltage tripping control module that does not take the circuit breaker inner space, to satisfy multiple annex installation requirement.
Problem described in the utility model realizes with following technical proposals:
A kind of intelligent plastic housing circuit breaker undervoltage tripping control module, comprise ac-dc converter circuit in the formation, reference voltage circuit, comparator, triode, coupling capacitance and three resistance, the ac input end of described ac-dc converter circuit connects AC power, first resistance and the output voltage that connects ac-dc converter circuit after second resistance is connected in series, the serial connection point of the two connects the negative input end of comparator, the output of the positive input termination reference voltage circuit of described comparator, its output connects the base stage of triode through coupling capacitance, the collector electrode of described triode connects the positive output end of ac-dc converter circuit, the magnetic flow convertor of emitter through intelligent plastic housing circuit breaker inside connects the negative output terminal of ac-dc converter circuit, and the 3rd resistance is its below-center offset resistance.
Above-mentioned intelligent plastic housing circuit breaker undervoltage tripping control module, described ac-dc converter circuit comprises transformer, rectifier bridge and filter capacitor, the primary coil of described transformer connects AC power, secondary coil connects the ac input end of rectifier bridge, and the output voltage of described rectifier bridge is other circuit supply after filter capacitor filtering.
Above-mentioned intelligent plastic housing circuit breaker undervoltage tripping control module, described reference voltage circuit comprises voltage-stabiliser tube, potentiometer and the 4th resistance, the positive pole of described voltage-stabiliser tube connects the negative output terminal of ac-dc converter circuit, negative pole connects the positive output end of ac-dc converter circuit through the 4th resistance, described potentiometer is attempted by on the voltage-stabiliser tube, the positive input terminal of its slip termination comparator.
Above-mentioned intelligent plastic housing circuit breaker undervoltage tripping control module, between the primary coil of transformer and AC power, also be provided with bleeder circuit, described bleeder circuit is made up of the 5th resistance and the 6th resistance, connect AC power after the two is connected in series, the output voltage at the 6th resistance two ends connects the primary coil of transformer.
The utility model utilizes the interior original magnetic flow convertor of breaker of plastic casing that breaker mechanism is threaded off, saved the solenoid in traditional under-voltage release, and this module can be installed on the outer wall of circuit breaker, do not take the circuit breaker inner space, thereby created condition for the installation of other annex.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is scheme of installation of the present utility model;
Fig. 2 and Fig. 3 are two kinds of electrical schematic diagrams of the present utility model;
Fig. 4 is the intelligence of the intelligent plastic housing circuit breaker electric theory diagram of threading off.
Each list of reference numerals is among the figure: 1, undervoltage tripping control module, 2, the draw bar on the breaker mechanism, T, transformer, ZQ, rectifier bridge, Q, triode, C, filter capacitor, C2, coupling capacitance, CB, magnetic flow convertor, F, comparator, D, voltage-stabiliser tube, W, potentiometer, R1～R6, first resistance～the 6th resistance.
Embodiment
Referring to Fig. 1, Fig. 4, characteristics of the present utility model are with the action executive component of former under-voltage release (namely utilizing the mechanism of the electromagnetic force driving circuit breaker of solenoid) cancellation, the substitute is the action executive component (being magnetic flow convertor CB) of intelligent breaker.Allow magnetic flow convertor CB when ensureing the intelligent breaker intelligent protection function, also carry out the dropout action command of undervoltage tripping control module.Namely when the undervoltage tripping control module detected voltage and is lower than 70%Ue, the undervoltage tripping control module was given an order to the magnetic flow convertor CB of intelligent breaker, and the circuit breaker draw bar is shifted in magnetic flow convertor CB action onto, and circuit breaker is disconnected.
Fig. 2 is supply voltage electrical schematic diagram of the present utility model when being 220V, and its operation principle is as follows:
Voltage-stabiliser tube D, the 4th resistance and potentiometer W constitute reference voltage circuit, the constant voltage of voltage-stabiliser tube D output+5V, and this voltage is input to the positive input terminal of comparator F after potentiometer W adjusts, and potentiometer W can improve the output services state of voltage-stabiliser tube D effectively.First resistance R 1, second resistance R 2 constitute a bleeder circuit, and its partial pressure value determines that by the resistance size of the output potential of rectifier bridge ZQ and first resistance R 1, second resistance R 2 output voltage of this bleeder circuit is received the negative input end of comparator F.As long as input voltage is load voltage value at 70%～115%Ue(Ue) scope in, the level of the negative input end of comparator F will be higher than the level of positive input terminal all the time; The output of comparator F maintains low level always, triode Q ends, there is not electric current to flow through from magnetic flow convertor CB, have only when input voltage and drop to 70%Ue when following, the level of comparator F negative input end will be lower than the level of positive input terminal, and this moment, the output of comparator F just became high level by low transition, thereby made triode Q conducting, electric current flows through magnetic flow convertor CB, the release action.Here triode Q has adopted the connected mode of emitter following; the winding coil of magnetic flow convertor CB is connected between the emitter and ground of triode Q; after winding coil that electric current flows through magnetic flow convertor CB makes the release action; the current potential of triode Q emitter will increase; cause triode Q to end at last, so just protected magnetic flow convertor CB.In addition, even the parameter designing of circuit also can guarantee the phenomenon that magnetic flow convertor also can not appear burning in the long-term energising of coil.
Fig. 3 is supply voltage electrical schematic diagram of the present utility model when being 380V, its operation principle and Fig. 2 are basic identical, just set up the bleeder circuit of being formed by the 5th resistance R 5 and the 6th resistance R 6 in transformer T front portion, this bleeder circuit is reduced to the input that is added in transformer T behind the 220V with 380V voltage, guarantees transformer T output 12V voltage.Can certainly by transformer T 380V voltage directly be reduced to 12V by changing the parameter of transformer T.
The utility model not only has under-voltage protection function, and easy for installation, reliable in action, can satisfy the user installs two groups of annexes simultaneously in the intelligent plastic housing circuit breaker requirement.The relevant requirements that meets GB14048.2 " low voltage switchgear and control appliance low-voltage circuit breaker " fully.
Claims (4)
1. intelligent plastic housing circuit breaker undervoltage tripping control module, it is characterized in that, it comprises ac-dc converter circuit, reference voltage circuit, comparator (F), triode (Q), coupling capacitance (C2) and three resistance, the ac input end of described ac-dc converter circuit connects AC power, first resistance (R1) and the output voltage that connects ac-dc converter circuit after second resistance (R2) is connected in series, the serial connection point of the two connects the negative input end of comparator (F), the output of the positive input termination reference voltage circuit of described comparator (F), its output connects the base stage of triode (Q) through coupling capacitance (C2), the collector electrode of described triode (Q) connects the positive output end of ac-dc converter circuit, emitter connects the negative output terminal of ac-dc converter circuit through the magnetic flow convertor (CB) of intelligent plastic housing circuit breaker inside, and the 3rd resistance (R3) is its below-center offset resistance.
2. intelligent plastic housing circuit breaker undervoltage tripping control module according to claim 1, it is characterized in that, described ac-dc converter circuit comprises transformer (T), rectifier bridge (ZQ) and filter capacitor (C1), the primary coil of described transformer (T) connects AC power, secondary coil connects the ac input end of rectifier bridge (ZQ), and the output voltage of described rectifier bridge (ZQ) is other circuit supply after filter capacitor (C1) filtering.
3. intelligent plastic housing circuit breaker undervoltage tripping control module according to claim 1 and 2, it is characterized in that, described reference voltage circuit comprises voltage-stabiliser tube (D), potentiometer (W) and the 4th resistance (R4), the positive pole of described voltage-stabiliser tube (D) connects the negative output terminal of ac-dc converter circuit, negative pole connects the positive output end of ac-dc converter circuit through the 4th resistance (R4), described potentiometer (W) is attempted by on the voltage-stabiliser tube (D), the positive input terminal of its slip termination comparator (F).
4. intelligent plastic housing circuit breaker undervoltage tripping control module according to claim 3, it is characterized in that, between the primary coil of transformer (T) and AC power, also be provided with bleeder circuit, described bleeder circuit is made up of the 5th resistance (R5) and the 6th resistance (R6), connect AC power after the two is connected in series, the output voltage at the 6th resistance (R6) two ends connects the primary coil of transformer (T).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125206 CN203151072U (en) | 2013-03-19 | 2013-03-19 | Intelligent molded case circuit breaker undervoltage tripping control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125206 CN203151072U (en) | 2013-03-19 | 2013-03-19 | Intelligent molded case circuit breaker undervoltage tripping control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203151072U true CN203151072U (en) | 2013-08-21 |
Family
ID=48978568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125206 Expired - Fee Related CN203151072U (en) | 2013-03-19 | 2013-03-19 | Intelligent molded case circuit breaker undervoltage tripping control module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203151072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023815A (en) * | 2015-06-29 | 2015-11-04 | 天津市百利电气有限公司 | Electronic undervoltage release of plastic case type breaker |
-
2013
- 2013-03-19 CN CN 201320125206 patent/CN203151072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023815A (en) * | 2015-06-29 | 2015-11-04 | 天津市百利电气有限公司 | Electronic undervoltage release of plastic case type breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107069655B (en) | Voltage protection circuit | |
| CN203984066U (en) | Intelligent charger circuit | |
| CN103647193A (en) | Anti-interference energy saving socket | |
| CN207339642U (en) | A kind of POE interchangers DC power supply | |
| CN202794915U (en) | Isolation-type zero standby power consumption circuit | |
| CN202353283U (en) | Universal combined solar charger | |
| CN110416975A (en) | A kind of power protecting circuit and new-energy automobile | |
| CN206804838U (en) | Wireless battery logging | |
| CN206835006U (en) | Flyback power supply circuit and electrical equipment | |
| CN209880490U (en) | Electromagnetic relay control circuit based on zero-crossing detection | |
| CN203151072U (en) | Intelligent molded case circuit breaker undervoltage tripping control module | |
| CN203151071U (en) | Intelligent moulded case circuit breaker shunt trip control module | |
| CN203135728U (en) | Voltage switching circuit and switch circuit | |
| CN203439864U (en) | Elevator control cabinet | |
| CN203192717U (en) | Electronic type plastic housing breaker | |
| CN215990185U (en) | Overvoltage protection circuit and electrical equipment | |
| CN204360258U (en) | Reduce the power circuit of stand-by power consumption | |
| CN202495882U (en) | Power supply circuit and television | |
| CN204061258U (en) | A kind of atmospheric pollution automatic air-exchanging circuit | |
| CN204179029U (en) | A kind of breaker of plastic casing with several functions | |
| CN204179637U (en) | The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing | |
| CN202888790U (en) | Resettable over/under-voltage protector based on one-chip microcomputer | |
| CN203368153U (en) | Intelligent controller for low voltage circuit breaker | |
| CN203504129U (en) | Component for determining breaker switching on/off signal generation | |
| CN201887447U (en) | Single-phase overvoltage protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HEBEI BAOKAI ELECTRIC CO., LTD. Free format text: FORMER NAME: BAOKAI ELECTRIC CO., LTD., HEBEI |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 072550, Baoding, Hebei province Chaoyang North Street, King 266 shop Industrial Park Patentee after: Hebei Bao Kai Electric Applicance Co., Ltd Patentee after: Baoding Kaizheng Electric Co., Ltd. Address before: 072550, Baoding, Hebei province Chaoyang North Street, King 266 shop Industrial Park Patentee before: Hebei Baokai Electrical Equipment Co., Ltd. Patentee before: Baoding Kaizheng Electric Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 072550, Baoding, Hebei province Chaoyang North Street, King 266 shop Industrial Park Patentee after: Hebei Bao Kai electric Limited by Share Ltd Patentee after: Baoding Kaizheng Electric Co., Ltd. Address before: 072550, Baoding, Hebei province Chaoyang North Street, King 266 shop Industrial Park Patentee before: Hebei Bao Kai Electric Applicance Co., Ltd Patentee before: Baoding Kaizheng Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20200319 |