CN204517370U - A kind of three phase electric machine reverse connecting protection warning circuit - Google Patents
A kind of three phase electric machine reverse connecting protection warning circuit Download PDFInfo
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- CN204517370U CN204517370U CN201520282022.1U CN201520282022U CN204517370U CN 204517370 U CN204517370 U CN 204517370U CN 201520282022 U CN201520282022 U CN 201520282022U CN 204517370 U CN204517370 U CN 204517370U
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Abstract
The utility model discloses a kind of three phase electric machine reverse connecting protection warning circuit; comprise testing circuit and control circuit and protection warning circuit; testing circuit comprises unidirectional thyristor Q1, resistance R1, electric capacity C1 and diode D4; control circuit comprises transformer W, rectifier bridge T, relay J 1, triode V1 and chip IC 1, and warning circuit comprises relay J 2 and loudspeaker B.The utility model circuit structure is simple, use components and parts are few, fast response time, and use optical coupler to carry out Phototube Coupling, effectively can shield noise jamming, be provided with the acoustic-optic alarm of light-emitting diode and loudspeaker composition simultaneously, can user reminded in time to take counter-measure, therefore this circuit have that structure is simple, cost of manufacture is low, the advantage of strong interference immunity and sound and light alarm.
Description
Technical field
The utility model relates to a kind of motor circuit, specifically a kind of three phase electric machine reverse connecting protection warning circuit.
Background technology
Three phase electric machine is the industrial important machinery of modernization, and it has the power set that the advantage such as efficient, energy-conservation, performance is good, it is little to vibrate, noise is low, the life-span is long, reliability is high, easy to maintenance, starting torque is large is widely used in various plant equipment.But much to the uncomprehending people of circuit when connection three phase electric machine circuit easily by the phase sequence wrong of motor, and wrong is met and is caused three phase electric machine not reach original rated current, motor is exerted oneself not, when electric current is excessive, enamelled wire heating is serious, insulation premature aging, motor coil is finally caused to burn out, therefore know that phase sequence connects timely return and protect the device of motor particularly important, the most complex structure of the reverse protection device that market occurs, interference free performance is poor, corresponding speed is slow, and there is no the warning device can reminding user, practicality is not strong.
Utility model content
The purpose of this utility model is that providing a kind of controls three phase electric machine reverse connecting protection warning circuit that is accurate, diverse in function, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of three phase electric machine reverse connecting protection warning circuit, comprise testing circuit and control circuit and protection warning circuit, testing circuit of telling comprises unidirectional thyristor Q1, resistance R1, electric capacity C1 and diode D4, described control circuit comprises transformer W, rectifier bridge T, relay J 1, triode V1 and chip IC 1, and described warning circuit comprises relay J 2 and loudspeaker B;
One end of the normally-closed contact J2-1 of described relay J 2 connects the anode of fuse F1 and diode D1, one end of the normally-closed contact J2-2 of relay J 2 connects fuse F2, relay J 1 and electric capacity C1, one end of the normally-closed contact J2-3 of relay J 2 connects fuse F1, switch S 1, the contact J1-1 of relay J 1, resistance R1, the negative electrode of unidirectional thyristor Q1 and the anode of diode D1, fuse F1, F2, the other end of F3 connects the A of three phase mains respectively, B, C phase, the other end of the normally-closed contact J2-1 ~ J2-3 of relay J 2 connects three connection jaws of three phase electric machine M respectively, the negative electrode of diode D1 connects the anode of diode D2, the negative electrode contact resistance R3 of diode D2 and resistance R4, the other end of resistance R3 connects electric capacity C2, the anode of unidirectional thyristor Q1 and 2 pins of chip IC 1, the control pole contact resistance R2 of unidirectional thyristor Q1 and the negative electrode of diode D4, the other end of other end contact resistance R1 of resistance R2 and the other end of electric capacity C1, the other end of resistance R4 connects the other end of electric capacity C2 and 1 pin of chip IC 1, 3 pin contact resistance R5 of chip IC 1, electric capacity C3, the negative electrode of diode D3, 1 port of relay J 2 and rectifier bridge T, the collector electrode of the other end connecting triode V1 of resistance R5, the base stage contact resistance R6 of triode V1, the other end of resistance R6 connects 4 pins of chip IC 1, the base stage of the emitter connecting triode V2 of triode V1, the other end of the collector connection relay J2 of triode V2, the anode of diode D3 and the anode of diode D5, the emitter contact resistance R8 of triode V2, the other end of electric capacity C8 and 3 ports of rectifier bridge T, the other end of resistance R8 connects the negative electrode of diode D5, the two ends of the winding N1 of 2 ports of rectifier bridge T and 4 ports difference connection transformer W, the other end of one end connecting valve S1 of the winding N2 of transformer W, the other end of the contact J1-1 of relay J 1 and resistance R7, the other end of resistance R7 connects the other end of relay J 1, the normally opened contact J2-4 of relay J 2 and resistance R9, the other end of resistance R9 connects the other end of the winding N2 of loudspeaker B and transformer W, the other end of loudspeaker B connects the other end of the normally opened contact J2-4 of relay J 2.
As preferred version of the present utility model: described chip IC 1 is 4N25 optical coupler.
As preferred version of the present utility model: 380V voltage is become 12V voltage by winding N1 and the winding N2 of described transformer W.
As preferred version of the present utility model: described diode D2 and D5 is light-emitting diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model circuit structure is simple, use components and parts are few, fast response time, and use optical coupler to carry out Phototube Coupling, effectively can shield noise jamming, be provided with the acoustic-optic alarm of light-emitting diode and loudspeaker composition simultaneously, can user be reminded in time to take counter-measure, therefore this circuit have that structure is simple, cost of manufacture is low, the advantage of strong interference immunity and sound and light alarm.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of three phase electric machine reverse connecting protection warning circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of three phase electric machine reverse connecting protection warning circuit, comprise testing circuit and control circuit and protection warning circuit, testing circuit comprises unidirectional thyristor Q1, resistance R1, electric capacity C1 and diode D4, control circuit comprises transformer W, rectifier bridge T, relay J 1, triode V1 and chip IC 1, and warning circuit comprises relay J 2 and loudspeaker B;
One end of the normally-closed contact J2-1 of described relay J 2 connects the anode of fuse F1 and diode D1, one end of the normally-closed contact J2-2 of relay J 2 connects fuse F2, relay J 1 and electric capacity C1, one end of the normally-closed contact J2-3 of relay J 2 connects fuse F1, switch S 1, the contact J1-1 of relay J 1, resistance R1, the negative electrode of unidirectional thyristor Q1 and the anode of diode D1, fuse F1, F2, the other end of F3 connects the A of three phase mains respectively, B, C phase, the other end of the normally-closed contact J2-1 ~ J2-3 of relay J 2 connects three connection jaws of three phase electric machine M respectively, the negative electrode of diode D1 connects the anode of diode D2, the negative electrode contact resistance R3 of diode D2 and resistance R4, the other end of resistance R3 connects electric capacity C2, the anode of unidirectional thyristor Q1 and 2 pins of chip IC 1, the control pole contact resistance R2 of unidirectional thyristor Q1 and the negative electrode of diode D4, the other end of other end contact resistance R1 of resistance R2 and the other end of electric capacity C1, the other end of resistance R4 connects the other end of electric capacity C2 and 1 pin of chip IC 1, 3 pin contact resistance R5 of chip IC 1, electric capacity C3, the negative electrode of diode D3, 1 port of relay J 2 and rectifier bridge T, the collector electrode of the other end connecting triode V1 of resistance R5, the base stage contact resistance R6 of triode V1, the other end of resistance R6 connects 4 pins of chip IC 1, the base stage of the emitter connecting triode V2 of triode V1, the other end of the collector connection relay J2 of triode V2, the anode of diode D3 and the anode of diode D5, the emitter contact resistance R8 of triode V2, the other end of electric capacity C8 and 3 ports of rectifier bridge T, the other end of resistance R8 connects the negative electrode of diode D5, the two ends of the winding N1 of 2 ports of rectifier bridge T and 4 ports difference connection transformer W, the other end of one end connecting valve S1 of the winding N2 of transformer W, the other end of the contact J1-1 of relay J 1 and resistance R7, the other end of resistance R7 connects the other end of relay J 1, the normally opened contact J2-4 of relay J 2 and resistance R9, the other end of resistance R9 connects the other end of the winding N2 of loudspeaker B and transformer W, the other end of loudspeaker B connects the other end of the normally opened contact J2-4 of relay J 2.
Chip IC 1 is 4N25 optical coupler.
380V voltage is become 12V voltage by winding N1 and the winding N2 of transformer W.
Diode D2 and D5 is light-emitting diode.
Operation principle of the present utility model is: circuit access three-phase alternating current, three-phase alternating current each be 220V, two voltages connected are 380V, as the normal wiring (A of phase sequence of three phase electric machine, B, C) time, optical coupler IC1 does not work, therefore triode V2 and triode V3 ends, diode D3 ends, relay J 1 does not work, light-emitting diode D5 conducting, send pilot light, light-emitting diode D2 does not work, represent that wiring is normal, as the abnormal wiring (C of phase sequence of three phase electric machine, B, A) time, optical coupler IC1 conducting, triode V2 and triode V3 conducting, diode D3 conducting, relay J 2 conducting, normally-closed contact J2-1 ~ the J2-3 of relay J 2 disconnects, disconnect three phase electric machine circuit, simultaneously relay J 2 often open electric shock J2-4 adhesive, loudspeaker B sends loud chimes of doom, diode D5 ends, diode D2 conducting, send warning light, the utility model circuit structure is simple, use components and parts are few, fast response time, and use optical coupler to carry out Phototube Coupling, effectively can shield noise jamming, be provided with the acoustic-optic alarm of light-emitting diode and loudspeaker composition simultaneously, can user be reminded in time to take counter-measure, therefore to have structure simple for this circuit, cost of manufacture is low, the advantage of strong interference immunity and sound and light alarm.
Claims (4)
1. a three phase electric machine reverse connecting protection warning circuit, comprises testing circuit and control circuit and protection warning circuit; It is characterized in that, testing circuit of telling comprises unidirectional thyristor Q1, resistance R1, electric capacity C1 and diode D4, described control circuit comprises transformer W, rectifier bridge T, relay J 1, triode V1 and chip IC 1, and described warning circuit comprises relay J 2 and loudspeaker B;
One end of the normally-closed contact J2-1 of described relay J 2 connects the anode of fuse F1 and diode D1, one end of the normally-closed contact J2-2 of relay J 2 connects fuse F2, relay J 1 and electric capacity C1, one end of the normally-closed contact J2-3 of relay J 2 connects fuse F1, switch S 1, the contact J1-1 of relay J 1, resistance R1, the negative electrode of unidirectional thyristor Q1 and the anode of diode D1, fuse F1, F2, the other end of F3 connects the A of three phase mains respectively, B, C phase, the other end of the normally-closed contact J2-1 ~ J2-3 of relay J 2 connects three connection jaws of three phase electric machine M respectively, the negative electrode of diode D1 connects the anode of diode D2, the negative electrode contact resistance R3 of diode D2 and resistance R4, the other end of resistance R3 connects electric capacity C2, the anode of unidirectional thyristor Q1 and 2 pins of chip IC 1, the control pole contact resistance R2 of unidirectional thyristor Q1 and the negative electrode of diode D4, the other end of other end contact resistance R1 of resistance R2 and the other end of electric capacity C1, the other end of resistance R4 connects the other end of electric capacity C2 and 1 pin of chip IC 1, 3 pin contact resistance R5 of chip IC 1, electric capacity C3, the negative electrode of diode D3, 1 port of relay J 2 and rectifier bridge T, the collector electrode of the other end connecting triode V1 of resistance R5, the base stage contact resistance R6 of triode V1, the other end of resistance R6 connects 4 pins of chip IC 1, the base stage of the emitter connecting triode V2 of triode V1, the other end of the collector connection relay J2 of triode V2, the anode of diode D3 and the anode of diode D5, the emitter contact resistance R8 of triode V2, the other end of electric capacity C8 and 3 ports of rectifier bridge T, the other end of resistance R8 connects the negative electrode of diode D5, the two ends of the winding N1 of 2 ports of rectifier bridge T and 4 ports difference connection transformer W, the other end of one end connecting valve S1 of the winding N2 of transformer W, the other end of the contact J1-1 of relay J 1 and resistance R7, the other end of resistance R7 connects the other end of relay J 1, the normally opened contact J2-4 of relay J 2 and resistance R9, the other end of resistance R9 connects the other end of the winding N2 of loudspeaker B and transformer W, the other end of loudspeaker B connects the other end of the normally opened contact J2-4 of relay J 2.
2. a kind of three phase electric machine reverse connecting protection warning circuit according to claim 1, is characterized in that, described chip IC 1 is 4N25 optical coupler.
3. a kind of three phase electric machine reverse connecting protection warning circuit according to claim 1, is characterized in that, 380V voltage is become 12V voltage by winding N1 and the winding N2 of described transformer W.
4. a kind of three phase electric machine reverse connecting protection warning circuit according to claim 1, it is characterized in that, described diode D2 and D5 is light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520282022.1U CN204517370U (en) | 2015-04-25 | 2015-04-25 | A kind of three phase electric machine reverse connecting protection warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520282022.1U CN204517370U (en) | 2015-04-25 | 2015-04-25 | A kind of three phase electric machine reverse connecting protection warning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204517370U true CN204517370U (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520282022.1U Expired - Fee Related CN204517370U (en) | 2015-04-25 | 2015-04-25 | A kind of three phase electric machine reverse connecting protection warning circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204517370U (en) |
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2015
- 2015-04-25 CN CN201520282022.1U patent/CN204517370U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160425 |