CN203434594U - Motor overheating delay protection device - Google Patents
Motor overheating delay protection device Download PDFInfo
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- CN203434594U CN203434594U CN201320381026.6U CN201320381026U CN203434594U CN 203434594 U CN203434594 U CN 203434594U CN 201320381026 U CN201320381026 U CN 201320381026U CN 203434594 U CN203434594 U CN 203434594U
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- motor
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Abstract
The utility model provides a motor overheating delay protection device which belongs to the technical field of motor control devices. According to the technical problem to be solved, the device which can accurately control motor overheating delay shutdown protection is provided. According to the adopted technical scheme, the motor overheating delay protection device comprises a circuit breaker DZ1, an alternating current contactor CJ1, a thermal relay RJ1, a start button QA1, a stop button TA1, fuses RT1 and RT2, indication lamps XHD1 and XHD2, an intermediate relay ZJ1 and a time relay SJ1; the wire inlet end of the circuit breaker DZ1 is connected with a three-phase alternating current power supply; and the wire outlet end of the circuit breaker DZ1 is connected in series with the main contact CJ1.2 of the alternating current contactor CJ1 and the thermal relay RJ1 and then is connected with the power supply end of a motor D1. The motor overheating delay protection device provided by the utility model is suitable for various motors.
Description
Technical field
A kind of motor overheating delay protection device of the utility model, belongs to motor control assembly technical field.
Background technology
In production practices, motor often can reason cause overheated so that damage and burn because overload, winding failure or supply voltage be undesired etc., has affected the economic loss of normally carrying out, caused production unit of producing, therefore need carry out overtemperature protection to motor.The setting value inconvenient debugging that the shortcoming that existing motor protection against overheat device exists is hot power-off, easily cause misoperation: while being greater than the specified position of motor if be adjusted to, " protection " is nonsensical; If be adjusted to specified when position of motor,, when equipment is at full capacity during long-term work, protector is understood a direct acting, makes equipment all the time in run-stopping status.
Utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: a kind of device that can accurately control motor overheating time delay stoppage protection is provided.
For solving the problems of the technologies described above; the technical scheme that the utility model adopts is: a kind of motor overheating delay protection device; comprise: circuit breaker DZ1, A.C. contactor CJ1, thermal relay RJ1, start button QA1, stop button TA1, fuse RT1, RT2, indicator light XHD1, XHD2, intermediate relay ZJ 1 and time relay sj 1, wherein:
The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and normally opened contact is CJ1.3, and normally-closed contact is CJ1.4;
The normally opened contact of thermal relay RJ1 is RJ1.1;
The coil of intermediate relay ZJ 1 is ZJ1.1, and its normally-closed contact is ZJ1.2;
The coil of time relay sj 1 is SJ1.1, and its timing closing contact is SJ1.2;
The main circuit of motor D1 is: the inlet wire termination three-phase alternating-current supply of described circuit breaker DZ1, the main contacts CJ1.2 that the leading-out terminal of described circuit breaker DZ1 is connected in series A.C. contactor CJ1 successively with after thermal relay RJ1, be connected with the power end of motor D1;
The control circuit structure of the overheated delay protection of described motor D1 is: after one end serial connection fuse RT1 of described stop button TA1, be connected with control circuit positive source, the other end of stop button TA1 successively and connect behind one end of one end of start button QA1 and the normally opened contact CJ1.3 of A.C. contactor CJ1 with one end of the normally-closed contact CJ1.4 of A.C. contactor CJ1 and be connected, the other end of described start button QA1 successively and connect the other end of the normally opened contact CJ1.3 of A.C. contactor CJ1, one end of indicator light XHD1, behind one end of the timing closing contact SJ1.2 of one end of the normally opened contact RJ1.1 of thermal relay RJ1 and time relay sj 1, be connected with one end of the coil CJ1.1 of A.C. contactor CJ1,
The other end of the coil CJ1.1 of described A.C. contactor CJ1 is connected with one end of the normally-closed contact ZJ1.2 of intermediate relay ZJ 1, the other end of the normally opened contact RJ1.1 of described thermal relay RJ1 is connected with one end of the coil SJ1.1 of time relay sj 1, the other end of timing closing contact SJ1.2 of described time relay sj 1 and one end of the coil ZJ1.1 of intermediate relay ZJ 1 are connected, and the other end of the normally-closed contact CJ1.4 of described A.C. contactor CJ1 is connected with one end of indicator light XHD2;
The other end of the normally-closed contact ZJ1.2 of described intermediate relay ZJ 1 successively and connect the other end of indicator light XHD1, the other end of the coil SJ1.1 of time relay sj 1, be connected with one end of fuse RT2 after the other end of the coil ZJ1.1 of intermediate relay ZJ 1 and the other end of indicator light XHD2, the other end of described fuse RT2 is connected with control circuit power cathode.
Compared with prior art, the utlity model has following beneficial effect: the utility model has added delay protection device, even when hot power-off setting value is the specified position of motor, when motor overheating makes thermal protector action, main circuit can not cut off at once yet, but normally operation; After reaching delay time, whole protective device just starts action, cuts off main circuit, and protection motor is not burned; If between time delay, the electric current of motor recovers normal and thermal protector is resetted, and main circuit can not be cut off, and has guaranteed the normal operation of motor, has avoided the generation of misoperation, and whole protective device circuit is simple, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail:
Fig. 1 is main circuit diagram of the present utility model;
Fig. 2 is control circuit figure of the present utility model.
Embodiment
As depicted in figs. 1 and 2; a kind of motor overheating delay protection device of the utility model; comprise: circuit breaker DZ1, A.C. contactor CJ1, thermal relay RJ1, start button QA1, stop button TA1, fuse RT1, RT2, indicator light XHD1, XHD2, intermediate relay ZJ 1 and time relay sj 1, wherein:
The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and normally opened contact is CJ1.3, and normally-closed contact is CJ1.4;
The normally opened contact of thermal relay RJ1 is RJ1.1;
The coil of intermediate relay ZJ 1 is ZJ1.1, and its normally-closed contact is ZJ1.2;
The coil of time relay sj 1 is SJ1.1, and its timing closing contact is SJ1.2;
The main circuit of motor D1 is: inlet wire termination A, the B of described circuit breaker DZ1, C three-phase alternating-current supply, the main contacts CJ1.2 that the leading-out terminal of described circuit breaker DZ1 is connected in series A.C. contactor CJ1 successively with after thermal relay RJ1, be connected with the power end of motor D1;
The control circuit structure of the overheated delay protection of described motor D1 is: after one end serial connection fuse RT1 of described stop button TA1, be connected with control circuit positive source, the other end of stop button TA1 successively and connect behind one end of one end of start button QA1 and the normally opened contact CJ1.3 of A.C. contactor CJ1 with one end of the normally-closed contact CJ1.4 of A.C. contactor CJ1 and be connected, the other end of described start button QA1 successively and connect the other end of the normally opened contact CJ1.3 of A.C. contactor CJ1, one end of indicator light XHD1, behind one end of the timing closing contact SJ1.2 of one end of the normally opened contact RJ1.1 of thermal relay RJ1 and time relay sj 1, be connected with one end of the coil CJ1.1 of A.C. contactor CJ1,
The other end of the coil CJ1.1 of described A.C. contactor CJ1 is connected with one end of the normally-closed contact ZJ1.2 of intermediate relay ZJ 1, the other end of the normally opened contact RJ1.1 of described thermal relay RJ1 is connected with one end of the coil SJ1.1 of time relay sj 1, the other end of timing closing contact SJ1.2 of described time relay sj 1 and one end of the coil ZJ1.1 of intermediate relay ZJ 1 are connected, and the other end of the normally-closed contact CJ1.4 of described A.C. contactor CJ1 is connected with one end of indicator light XHD2;
The other end of the normally-closed contact ZJ1.2 of described intermediate relay ZJ 1 successively and connect the other end of indicator light XHD1, the other end of the coil SJ1.1 of time relay sj 1, be connected with one end of fuse RT2 after the other end of the coil ZJ1.1 of intermediate relay ZJ 1 and the other end of indicator light XHD2, the other end of described fuse RT2 is connected with control circuit power cathode.
When pressing start button QA1, A.C. contactor CJ1 self-locking energising, coil CJ1.1 obtains electric, normally opened contact CJ1.3 adhesive, indicator light XHD1 is bright, and normally-closed contact CJ1.4 disconnects, and indicator light XHD2 goes out, main contacts CJ1.2 adhesive, main circuit energising operation; When pressing stop button TA1, A.C. contactor CJ1 vows electric tripping, coil CJ1.1 dead electricity, and normally opened contact CJ1.3 disconnects, and indicator light XHD1 goes out, and normally-closed contact CJ1.4 is closed, and indicator light XHD2 is bright, and main contacts CJ1.2 disconnects, and main circuit power-off is out of service.
When motor overheating breaks down, the normally opened contact RJ1.1 of thermal relay RJ1 is closed, the coil SJ1.1 of time relay sj 1 obtains electric, reach after delay time, timing closing contact SJ1.2 is closed, and the coil ZJ1.1 of intermediate relay ZJ 1 obtains electric, and the normally-closed contact ZJ1.2 of intermediate relay ZJ 1 disconnects, main circuit is cut off, and motor is protected; If between time delay, it is normal that current of electric recovers, and thermal relay RJ1 resets, and main circuit can not be cut off but normally move work, has avoided the generation of misoperation.
Claims (1)
1. a motor overheating delay protection device; it is characterized in that: comprising: circuit breaker DZ1, A.C. contactor CJ1, thermal relay RJ1, start button QA1, stop button TA1, fuse RT1, RT2, indicator light XHD1, XHD2, intermediate relay ZJ 1 and time relay sj 1, wherein:
The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and normally opened contact is CJ1.3, and normally-closed contact is CJ1.4;
The normally opened contact of thermal relay RJ1 is RJ1.1;
The coil of intermediate relay ZJ 1 is ZJ1.1, and its normally-closed contact is ZJ1.2;
The coil of time relay sj 1 is SJ1.1, and its timing closing contact is SJ1.2;
The main circuit of motor D1 is: the inlet wire termination three-phase alternating-current supply of described circuit breaker DZ1, the main contacts CJ1.2 that the leading-out terminal of described circuit breaker DZ1 is connected in series A.C. contactor CJ1 successively with after thermal relay RJ1, be connected with the power end of motor D1;
The control circuit structure of the overheated delay protection of described motor D1 is: after one end serial connection fuse RT1 of described stop button TA1, be connected with control circuit positive source, the other end of stop button TA1 successively and connect behind one end of one end of start button QA1 and the normally opened contact CJ1.3 of A.C. contactor CJ1 with one end of the normally-closed contact CJ1.4 of A.C. contactor CJ1 and be connected, the other end of described start button QA1 successively and connect the other end of the normally opened contact CJ1.3 of A.C. contactor CJ1, one end of indicator light XHD1, behind one end of the timing closing contact SJ1.2 of one end of the normally opened contact RJ1.1 of thermal relay RJ1 and time relay sj 1, be connected with one end of the coil CJ1.1 of A.C. contactor CJ1,
The other end of the coil CJ1.1 of described A.C. contactor CJ1 is connected with one end of the normally-closed contact ZJ1.2 of intermediate relay ZJ 1, the other end of the normally opened contact RJ1.1 of described thermal relay RJ1 is connected with one end of the coil SJ1.1 of time relay sj 1, the other end of timing closing contact SJ1.2 of described time relay sj 1 and one end of the coil ZJ1.1 of intermediate relay ZJ 1 are connected, and the other end of the normally-closed contact CJ1.4 of described A.C. contactor CJ1 is connected with one end of indicator light XHD2;
The other end of the normally-closed contact ZJ1.2 of described intermediate relay ZJ 1 successively and connect the other end of indicator light XHD1, the other end of the coil SJ1.1 of time relay sj 1, be connected with one end of fuse RT2 after the other end of the coil ZJ1.1 of intermediate relay ZJ 1 and the other end of indicator light XHD2, the other end of described fuse RT2 is connected with control circuit power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381026.6U CN203434594U (en) | 2013-06-29 | 2013-06-29 | Motor overheating delay protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381026.6U CN203434594U (en) | 2013-06-29 | 2013-06-29 | Motor overheating delay protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203434594U true CN203434594U (en) | 2014-02-12 |
Family
ID=50063612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320381026.6U Expired - Fee Related CN203434594U (en) | 2013-06-29 | 2013-06-29 | Motor overheating delay protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203434594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326318A (en) * | 2013-06-29 | 2013-09-25 | 襄垣县树元电器有限公司 | Electric motor overheating delayed protection device |
| CN107732874A (en) * | 2017-11-18 | 2018-02-23 | 襄垣县树元电器有限公司 | Energy saving motor rectification overheats delay protection device |
-
2013
- 2013-06-29 CN CN201320381026.6U patent/CN203434594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326318A (en) * | 2013-06-29 | 2013-09-25 | 襄垣县树元电器有限公司 | Electric motor overheating delayed protection device |
| CN107732874A (en) * | 2017-11-18 | 2018-02-23 | 襄垣县树元电器有限公司 | Energy saving motor rectification overheats delay protection device |
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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: 20140212 Termination date: 20140629 |
|
| EXPY | Termination of patent right or utility model |