CN2457725Y - DC controller of AC contactor - Google Patents
DC controller of AC contactor Download PDFInfo
- Publication number
- CN2457725Y CN2457725Y CN 00267946 CN00267946U CN2457725Y CN 2457725 Y CN2457725 Y CN 2457725Y CN 00267946 CN00267946 CN 00267946 CN 00267946 U CN00267946 U CN 00267946U CN 2457725 Y CN2457725 Y CN 2457725Y
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- China
- Prior art keywords
- contactor
- follower
- control switch
- storage capacitor
- controller
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Abstract
The utility model relates to a DC controller of an AC contactor, which is composed of a rectifier, a follower, a voltage stabilizer, a control switch, a storage capacitor and a contactor, wherein, the output of the rectifier is connected with the follower, the voltage stabilizer is connected with the input end of the follower, the output of the follower passes through a limited resistance and then passes through the storage capacitor to the power supply destination, and the control switch is connected in parallel with the storage capacitor after the control switch is connected in series with the contactor. The utility model still can make the contactor combined reliably and work for a long time under the condition of large electric-network voltage fluctuation and large harmonic component.
Description
The utility model relates to A.C. contactor DC control circuit (resistor-type).
The coil working voltage of general A.C. contactor is generally 220V ± 20%, but some areas section period line voltage may paranormal voltage 30%, and some constantly may be lower than 70% of normal voltage, and this moment, universal contactor burnt easily.
In view of above-mentioned, the purpose of this utility model provides a kind of A.C. contactor DC control circuit, and when line voltage fluctuated widely, it still can make reliable adhesive of contactor and long-term work.
The purpose of this utility model provides following technical scheme to realize:
A kind of A.C. contactor dc controller is made of rectifier, follower, pressurizer, control switch, storage capacitor, contactor, wherein: the output of rectifier connects follower, pressurizer is connected on the input of follower, the output of follower behind current-limiting resistance again through storage capacitor to power supply ground, control switch connect with contactor the back in parallel with storage capacitor.
Described control switch can be outside connected switch or ghyristor circuit, also can be made of outside connected switch and ghyristor circuit series connection, and described contactor is connected in the controllable silicon major loop.
Described pressurizer is the voltage stabilizing didoe that is connected between follower base stage and the power supply ground.
The utility model has the advantages that: because after adopting three-phase rectifier, as long as any in the three-phase input have electricity mutually, this circuit promptly has power supply, thereby has improved the reliability of work; Since adopt pressurizer and follower in conjunction with and through the circuit form of storage capacitor filtering, be equivalent to for contactor provides stabilized voltage power supply, so under the situation that line voltage fluctuates widely and harmonic component is big, still can make reliable adhesive of contactor and long-term work.
Describe in detail below in conjunction with drawings and Examples.
Fig. 1 is the circuit diagram of an embodiment of the utility model;
Fig. 2 is the circuit diagram of the utility model second embodiment;
Fig. 3 is the circuit diagram of the utility model the 3rd embodiment.
The utility model A.C. contactor dc controller is made of three-phase rectifier, follower, pressurizer, control switch, storage capacitor, contactor, wherein: the output of three-phase rectifier connects follower, pressurizer is connected on the input of follower, the output of follower behind current-limiting resistance again through storage capacitor to power supply ground, control switch connect with contactor the back in parallel with storage capacitor.
Among Fig. 1-Fig. 3, A, B, C are three-phase alternating current input, and N is a ground wire, and D1-D3 constitutes three-phase half wave retifier, as long as any in the three-phase input have electricity mutually, this circuit promptly has power supply, thereby has improved the reliability of working.The output of three-phase rectifier meets triode T1, triode T1 adopts the emitter way of output, voltage-stabiliser tube D4 is connected on base stage and the power supply ground end of triode T1, the output of triode T1 behind current-limiting resistance R2 again through storage capacitor C1 to power supply ground, control switch connect with contactor KM the back in parallel with storage capacitor C1.
Fig. 1 is external control contact scheme, and outside connected switch KA is a control switch.T1, R1, D4, C1 constitute follower circuit, and the pressure stabilization function of D4 makes the voltage on the C1 can not surpass certain value.When control switch contact KA opened, capacitor C 1 charged to the voltage stabilizing value a little less than D1.After the KA closure, C1 provides the energy of contactor adhesive moment to the coil discharge of contactor KM, and the voltage on the C1 reduces simultaneously.After the contactor adhesive, the resistance value ratio of internal resistance of KM coil and R2 has determined the long-term work voltage on the coil, and R2 has three effects herein.1. limit charging current, the protection power tube T1 of C1; 2. determined that the long-term work voltage on the KM can be too not high; 3. make contactor coil smoothly transit to little current work state after the adhesive by the adhesive instantaneous large-current.
Foregoing circuit can be contained in the shell.
Fig. 2 is not for there being the control contact scheme, and wherein R3, R4, C2, SCR have constituted an electronic switching circuit, and contactor KM is connected in the controllable silicon major loop.When having only voltage on the C1 to be higher than certain value, SCR could conducting, thereby has guaranteed the reliable adhesive of contactor, therefore the control contact is arranged and does not have the control contact scheme merge after, also can improve the reliability of contactor adhesive.Circuit as shown in Figure 3.
When the electrical network phase voltage is 100-300V, can both make reliable adhesive of contactor and long-term work through measuring the utility model circuit.
Above embodiment for explanation the utility model, is not to be used for limiting claim of the present utility model only, and therefore, the improvement of any unsubstantiality of doing based on the utility model and prior art surely belongs within the scope of patent protection of the present utility model.
Claims (5)
1. A.C. contactor dc controller, it is characterized in that: it is made of rectifier, follower, pressurizer, control switch, storage capacitor, contactor, wherein:
The output of rectifier connects follower, and pressurizer is connected on the input of follower, the output of follower behind current-limiting resistance again through storage capacitor to power supply ground, control switch connect with contactor the back in parallel with storage capacitor.
2. A.C. contactor dc controller as claimed in claim 1 is characterized in that: described control switch is an outside connected switch.
3. A.C. contactor dc controller as claimed in claim 1 is characterized in that: described control switch is a ghyristor circuit.
4. A.C. contactor dc controller as claimed in claim 1 is characterized in that: described control switch is made of outside connected switch and ghyristor circuit series connection, and described contactor is connected in the controllable silicon major loop.
5. as the described A.C. contactor dc controller of one of claim 1-4, it is characterized in that: described pressurizer is the voltage stabilizing didoe that is connected between follower base stage and the power supply ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267946 CN2457725Y (en) | 2000-12-28 | 2000-12-28 | DC controller of AC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267946 CN2457725Y (en) | 2000-12-28 | 2000-12-28 | DC controller of AC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457725Y true CN2457725Y (en) | 2001-10-31 |
Family
ID=33621663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00267946 Expired - Fee Related CN2457725Y (en) | 2000-12-28 | 2000-12-28 | DC controller of AC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457725Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198977A (en) * | 2013-03-29 | 2013-07-10 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuit |
| CN104539196A (en) * | 2014-12-10 | 2015-04-22 | 深圳市雷赛智能控制股份有限公司 | Driver soft start protecting device and protecting method thereof |
| CN106935441A (en) * | 2017-04-28 | 2017-07-07 | 成都雅骏新能源汽车科技股份有限公司 | A kind of ac contactor control circuit |
| CN104795276B (en) * | 2014-01-21 | 2017-12-01 | 北京动力源科技股份有限公司 | The method of supplying power to and circuit of a kind of A.C. contactor |
-
2000
- 2000-12-28 CN CN 00267946 patent/CN2457725Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198977A (en) * | 2013-03-29 | 2013-07-10 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuit |
| CN103198977B (en) * | 2013-03-29 | 2016-05-25 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuits |
| CN104795276B (en) * | 2014-01-21 | 2017-12-01 | 北京动力源科技股份有限公司 | The method of supplying power to and circuit of a kind of A.C. contactor |
| CN104539196A (en) * | 2014-12-10 | 2015-04-22 | 深圳市雷赛智能控制股份有限公司 | Driver soft start protecting device and protecting method thereof |
| CN106935441A (en) * | 2017-04-28 | 2017-07-07 | 成都雅骏新能源汽车科技股份有限公司 | A kind of ac contactor control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |