CN202586289U - Motor open-phase protector - Google Patents
Motor open-phase protector Download PDFInfo
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- CN202586289U CN202586289U CN 201220250639 CN201220250639U CN202586289U CN 202586289 U CN202586289 U CN 202586289U CN 201220250639 CN201220250639 CN 201220250639 CN 201220250639 U CN201220250639 U CN 201220250639U CN 202586289 U CN202586289 U CN 202586289U
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- intermediate relay
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- out terminal
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Abstract
The utility model relates to a motor open-phase protector, belonging to the technical field of motor safety protectors. The utility model aims to provide a motor open-phase protector which has the advantages of simple structure and high reliability. The technical scheme is as follows: the motor open-phase protector comprises a stop button AT1, a start button AQ2, a AC contactor CJ1, an indicator lamp and an intermediate relay; in a motor main circuit, a wire inlet end of a disconnecting switch DK1 is connected with an A, B and C three-phase power supply; and a wire outlet end of the disconnecting switch DK1 is connected with a main contact CJ1-3 of the AC contactor CJ1 in series and then connected with a power end of a motor M1. The utility model has the advantages of simple structure and high reliability, and is widely applicable to the fields of factories and coal mines.
Description
Technical field
A kind of motor phase failure protection device of the utility model belongs to motor safety guard technical field.
Background technology
Safety guard is the on-the-spot indispensable safety attachment of motor device that uses, and when breaking down in the equipment operation, safety guard not only can send alarm signal, reminds the staff, can also implement safeguard measure.
A kind of motor phase failure protection device of existing three-phase, complex structure, the adjustment difficulty, poor reliability, the scope of application is little, can not reliable protection be provided to motor, possibly cause serious accident; So urgent need provides, and a kind of response speed is fast, the reliable safety device of defencive function.
Summary of the invention
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: a kind of simple in structure, a kind of motor phase failure protection device that reliability is high is provided.
For solving the problem that exists in the prior art, the technical scheme that the utility model adopts is: a kind of motor phase failure protection device comprises stop button AT1, start button AQ2, A.C. contactor CJ1, indicator light and auxiliary relay;
The coil CJ1-1 of A.C. contactor CJ1, its normally opened contact CJ1-2, main contacts CJ1-3;
The coil ZJ1-1 of intermediate relay ZJ 1, its normally opened contact ZJ1-2, normally-closed contact ZJ1-3;
The coil ZJ2-1 of intermediate relay ZJ 2, its normally opened contact ZJ2-2, normally-closed contact ZJ2-3;
The coil ZJ3-1 of intermediate relay ZJ 3, its normally opened contact ZJ3-2, normally-closed contact ZJ3-3.
In the motor main circuit, the end of incoming cables of knife switch DK1 links to each other with A, B, C three phase mains, links to each other with the power end of motor M1 behind the main contacts CJ1-3 of the leading-out terminal serial connection A.C. contactor CJ1 of knife switch DK1; Circuit is continuous mutually with the C of the leading-out terminal of knife switch DK1 in the end of incoming cables of the coil ZJ1-1 of intermediate relay ZJ 1; Circuit is continuous mutually with the B of the leading-out terminal of knife switch DK1 in the end of incoming cables of the coil ZJ2-1 of intermediate relay ZJ 2; The end of incoming cables of the coil ZJ3-1 of intermediate relay ZJ 3 and the A of the leading-out terminal of knife switch DK1 circuit mutually link to each other, the leading-out terminal of the coil ZJ1-1 of intermediate relay ZJ 1 and connect the leading-out terminal of coil ZJ3-1 of leading-out terminal and intermediate relay ZJ 3 of coil ZJ2-1 of intermediate relay ZJ 2 after ground connection.
In the control circuit; The end of fuse RD1 links to each other with power end is anodal; The other end of fuse RD1 links to each other with the end of fuse RD2 after being connected in series the coil CJ1-1 of normally opened contact ZJ3-2 and A.C. contactor CJ1 of normally opened contact ZJ2-2, intermediate relay ZJ 3 of normally opened contact ZJ1-2, the intermediate relay ZJ 2 of stop button AT1, start button AQ2, intermediate relay ZJ 1 successively, and the other end of fuse RD2 links to each other with the power end negative pole.
The normally opened contact CJ1-2 of A.C. contactor CJ1 is attempted by the two ends of start button AQ2; The end of incoming cables of the normally-closed contact ZJ1-3 of intermediate relay ZJ 1 and connect the end of incoming cables of normally-closed contact ZJ3-3 of end of incoming cables and intermediate relay ZJ 3 of normally-closed contact ZJ2-3 of intermediate relay ZJ 2 after link to each other with the end of incoming cables of start button AQ2; Link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 behind the leading-out terminal of the normally-closed contact ZJ1-3 of the intermediate relay ZJ 1 serial connection indicator light HD1; Link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 behind the leading-out terminal of the normally-closed contact ZJ2-3 of the intermediate relay ZJ 2 serial connection indicator light HD2, the leading-out terminal of the normally-closed contact ZJ3-3 of intermediate relay ZJ 3 is connected in series behind the indicator light HD3 with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 and links to each other.
The beneficial effect that the utility model compared with prior art has is: the utility model adopts components and parts such as traditional A.C. contactor and auxiliary relay to constitute a complete a kind of motor phase failure protection device; Simple in structure; Cost is lower, and reliability is high; When practicing thrift cost, effectively guaranteed equipment and personnel's safety.
Description of drawings
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation:
Fig. 1 is the main circuit diagram of motor in the utility model;
Fig. 2 is in the control circuit of motor in the utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of motor phase failure protection device of the utility model comprises stop button AT1, start button AQ2, A.C. contactor CJ1, indicator light and auxiliary relay;
The coil CJ1-1 of A.C. contactor CJ1, its normally opened contact CJ1-2, main contacts CJ1-3;
The coil ZJ1-1 of intermediate relay ZJ 1, its normally opened contact ZJ1-2, normally-closed contact ZJ1-3;
The coil ZJ2-1 of intermediate relay ZJ 2, its normally opened contact ZJ2-2, normally-closed contact ZJ2-3;
The coil ZJ3-1 of intermediate relay ZJ 3, its normally opened contact ZJ3-2, normally-closed contact ZJ3-3.
In the motor main circuit, the end of incoming cables of knife switch DK1 links to each other with A, B, C three phase mains, links to each other with the power end of motor M1 behind the main contacts CJ1-3 of the leading-out terminal serial connection A.C. contactor CJ1 of knife switch DK1; Circuit is continuous mutually with the C of the leading-out terminal of knife switch DK1 in the end of incoming cables of the coil ZJ1-1 of intermediate relay ZJ 1; Circuit is continuous mutually with the B of the leading-out terminal of knife switch DK1 in the end of incoming cables of the coil ZJ2-1 of intermediate relay ZJ 2; The end of incoming cables of the coil ZJ3-1 of intermediate relay ZJ 3 and the A of the leading-out terminal of knife switch DK1 circuit mutually link to each other, the leading-out terminal of the coil ZJ1-1 of intermediate relay ZJ 1 and connect the leading-out terminal of coil ZJ3-1 of leading-out terminal and intermediate relay ZJ 3 of coil ZJ2-1 of intermediate relay ZJ 2 after ground connection; Knife switch DK1 when motor main circuit breaks down, manually breaks off knife switch DK1 as the master switch of motor main circuit, cuts off the power supply input of motor main circuit, but the safety inspection working line.
In the control circuit; The end of fuse RD1 links to each other with power end is anodal; The other end of fuse RD1 links to each other with the end of fuse RD2 after being connected in series the coil CJ1-1 of normally opened contact ZJ3-2 and A.C. contactor CJ1 of normally opened contact ZJ2-2, intermediate relay ZJ 3 of normally opened contact ZJ1-2, the intermediate relay ZJ 2 of stop button AT1, start button AQ2, intermediate relay ZJ 1 successively, and the other end of fuse RD2 links to each other with the power end negative pole; Power end in the above-mentioned control circuit can with the three-phase AC line of knife switch DK1 leading-out terminal in any two link to each other.
The normally opened contact CJ1-2 of A.C. contactor CJ1 is attempted by the two ends of start button AQ2; The end of incoming cables of the normally-closed contact ZJ1-3 of intermediate relay ZJ 1 and connect the end of incoming cables of normally-closed contact ZJ3-3 of end of incoming cables and intermediate relay ZJ 3 of normally-closed contact ZJ2-3 of intermediate relay ZJ 2 after link to each other with the end of incoming cables of start button AQ2; Link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 behind the leading-out terminal of the normally-closed contact ZJ1-3 of the intermediate relay ZJ 1 serial connection indicator light HD1; Link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 behind the leading-out terminal of the normally-closed contact ZJ2-3 of the intermediate relay ZJ 2 serial connection indicator light HD2, the leading-out terminal of the normally-closed contact ZJ3-3 of intermediate relay ZJ 3 is connected in series behind the indicator light HD3 with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 and links to each other.
In the utility model; Closed knife switch DK1; Press start button AQ2; The coil ZJ3-1 of the coil ZJ1-1 of intermediate relay ZJ 1, the coil ZJ2-1 of intermediate relay ZJ 2 and intermediate relay ZJ 3 must conduct, the normally opened contact ZJ3-2 adhesive of the normally opened contact ZJ1-2 of intermediate relay ZJ 1, the normally opened contact ZJ2-2 of intermediate relay ZJ 2 and intermediate relay ZJ 3, control circuit conducting; Normally opened contact CJ1-2 and the main contacts CJ1-3 of A.C. contactor CJ1 get electric adhesive; Motor M1 starts operation, and the normally-closed contact ZJ3-3 of the normally-closed contact ZJ2-3 of the normally-closed contact ZJ1-3 of intermediate relay ZJ 1, intermediate relay ZJ 2 and intermediate relay ZJ 3 breaks off simultaneously, and indicator light HD1, HD2 and HD3 do not work;
When any phase short of electricity in the three-phase line of knife switch DK1 leading-out terminal in the motor main circuit, with this coil losing electricity of the auxiliary relay that links to each other of circuit mutually, the adhesive once more of the normally-closed contact of its disconnection; Corresponding indicator light is bright; Indicate this phase circuit short of electricity, the normally opened contact that this auxiliary relay is closed simultaneously breaks off, and cuts off control circuit; The main contacts CJ1-3 dead electricity of A.C. contactor CJ1 is broken off, and motor M1 is out of service.
The utility model adopts components and parts such as traditional A.C. contactor and auxiliary relay to constitute a complete a kind of motor phase failure protection device, and simple in structure, cost is lower, and reliability is high; When practicing thrift cost, effectively guaranteed equipment and personnel's safety.
Claims (1)
1. a motor phase failure protection device comprises stop button AT1, start button AQ2, A.C. contactor CJ1, indicator light and auxiliary relay;
The coil CJ1-1 of A.C. contactor CJ1, its normally opened contact CJ1-2, main contacts CJ1-3;
The coil ZJ1-1 of intermediate relay ZJ 1, its normally opened contact ZJ1-2, normally-closed contact ZJ1-3;
The coil ZJ2-1 of intermediate relay ZJ 2, its normally opened contact ZJ2-2, normally-closed contact ZJ2-3;
The coil ZJ3-1 of intermediate relay ZJ 3, its normally opened contact ZJ3-2, normally-closed contact ZJ3-3;
It is characterized in that: in the motor main circuit, the end of incoming cables of knife switch DK1 links to each other with A, B, C three phase mains, links to each other with the power end of motor M1 behind the main contacts CJ1-3 of the leading-out terminal serial connection A.C. contactor CJ1 of knife switch DK1; Circuit is continuous mutually with the C of the leading-out terminal of knife switch DK1 in the end of incoming cables of the coil ZJ1-1 of intermediate relay ZJ 1; Circuit is continuous mutually with the B of the leading-out terminal of knife switch DK1 in the end of incoming cables of the coil ZJ2-1 of intermediate relay ZJ 2; The end of incoming cables of the coil ZJ3-1 of intermediate relay ZJ 3 and the A of the leading-out terminal of knife switch DK1 circuit mutually link to each other, the leading-out terminal of the coil ZJ1-1 of intermediate relay ZJ 1 and connect the leading-out terminal of coil ZJ3-1 of leading-out terminal and intermediate relay ZJ 3 of coil ZJ2-1 of intermediate relay ZJ 2 after ground connection;
In the control circuit; The end of fuse RD1 links to each other with power end is anodal; The other end of fuse RD1 links to each other with the end of fuse RD2 after being connected in series the coil CJ1-1 of normally opened contact ZJ3-2 and A.C. contactor CJ1 of normally opened contact ZJ2-2, intermediate relay ZJ 3 of normally opened contact ZJ1-2, the intermediate relay ZJ 2 of stop button AT1, start button AQ2, intermediate relay ZJ 1 successively, and the other end of fuse RD2 links to each other with the power end negative pole;
The normally opened contact CJ1-2 of A.C. contactor CJ1 is attempted by the two ends of start button AQ2; The end of incoming cables of the normally-closed contact ZJ1-3 of intermediate relay ZJ 1 and connect the end of incoming cables of normally-closed contact ZJ3-3 of end of incoming cables and intermediate relay ZJ 3 of normally-closed contact ZJ2-3 of intermediate relay ZJ 2 after link to each other with the end of incoming cables of start button AQ2; Link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 behind the leading-out terminal of the normally-closed contact ZJ1-3 of the intermediate relay ZJ 1 serial connection indicator light HD1; Link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 behind the leading-out terminal of the normally-closed contact ZJ2-3 of the intermediate relay ZJ 2 serial connection indicator light HD2, the leading-out terminal of the normally-closed contact ZJ3-3 of intermediate relay ZJ 3 is connected in series behind the indicator light HD3 with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1 and links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250639 CN202586289U (en) | 2012-05-31 | 2012-05-31 | Motor open-phase protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250639 CN202586289U (en) | 2012-05-31 | 2012-05-31 | Motor open-phase protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586289U true CN202586289U (en) | 2012-12-05 |
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ID=47255657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220250639 Expired - Fee Related CN202586289U (en) | 2012-05-31 | 2012-05-31 | Motor open-phase protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684161A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Default phase protection device of motor |
-
2012
- 2012-05-31 CN CN 201220250639 patent/CN202586289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684161A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Default phase protection device of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140531 |