CN202004699U - Soft start control circuit for motor - Google Patents
Soft start control circuit for motor Download PDFInfo
- Publication number
- CN202004699U CN202004699U CN2010206800987U CN201020680098U CN202004699U CN 202004699 U CN202004699 U CN 202004699U CN 2010206800987 U CN2010206800987 U CN 2010206800987U CN 201020680098 U CN201020680098 U CN 201020680098U CN 202004699 U CN202004699 U CN 202004699U
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- Prior art keywords
- motor
- control circuit
- soft start
- start control
- soft
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Abstract
The utility model relates to a soft start control circuit for a motor. The soft start control circuit is characterized in that: a soft starter is connected in series into a master electric control circuit of the motor. Compared with the prior art, the soft start control circuit has the advantages that: 1) the soft start control circuit is convenient to operate and easy to maintain, and saves electric energy; 2) a soft start working way eliminates the impact and interference of direct start in a power grid, and reduces the failure rate of the motor and electrical elements; and 3) the soft starter adopts contact-free electronic elements so as to ensure low temperature rise.
Description
Technical field
The utility model relates to petroleum well servicing rig control technology field, relates in particular to a kind of flexible starter for electric motor control loop.
Background technology
Petroleum well servicing rig is the common equipment that operation under oil, the well is carried out in the oil field, and it as power source, finishes lifting and walking operation by gearbox with motor or Diesel engine.In use there are some defectives in the motor of petroleum well servicing rig at present, and some motor often are under zero load or the light condition and move, and the efficient of motor and power factor are all very low, cause electric energy to waste in a large number; And motor caused line drop when across-the-line starting is bigger, and starting current is 7 times of rated current, influences other load operate as normal.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of flexible starter for electric motor control loop convenient to operation is provided.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The flexible starter for electric motor control loop is characterized in that, is in series with soft starter in the electrical control major loop of motor.
Compared with prior art, the beneficial effects of the utility model are: 1) easy to operate, saves energy is safeguarded easily; 2) the soft start working method has been eliminated impact and the interference of direct startup to electrical network, has reduced the failure rate of motor and electric component; 3) soft starter adopts the contactless electron element, and the work temperature rise is very low.
Description of drawings
Fig. 1 is the utility model control structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Seeing Fig. 1, is the utility model flexible starter for electric motor control loop control structure schematic diagram, is in series with soft starter ATS48 in the electrical control major loop of motor M.Soft starter ATS48 is with the starting of slope control mode, makes motor M rotating speed level and smooth, progressively brings up to rated speed, and soft start belongs to little electric current start mode.In the major loop of motor M, three phase mains is connected with residual current circuit breaker QF1, residual current circuit breaker QF2, contactor KM1, fuse FR1, soft starter ATS48, motor M successively, contactor KM3 is a bypass contactor, after soft start finishes, contactor KM3 adhesive, motor M works under rated current.In control loop, contactor KM1 coil and contactor KM3 coil are connected with power transfer relay KSJ respectively, and contactor KM1 coil and contactor KM3 coil also are parallel with RC accumulation of energy loop respectively, with the impulse current in the absorption circuit, and the protection contactor coil.
Claims (1)
1. the flexible starter for electric motor control loop is characterized in that, is in series with soft starter in the electrical control major loop of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206800987U CN202004699U (en) | 2010-12-25 | 2010-12-25 | Soft start control circuit for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206800987U CN202004699U (en) | 2010-12-25 | 2010-12-25 | Soft start control circuit for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004699U true CN202004699U (en) | 2011-10-05 |
Family
ID=44707424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206800987U Expired - Fee Related CN202004699U (en) | 2010-12-25 | 2010-12-25 | Soft start control circuit for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510513A (en) * | 2018-07-18 | 2019-03-22 | 上海锐机电有限公司 | A kind of side pushes away big function equipment Soft Starting System |
-
2010
- 2010-12-25 CN CN2010206800987U patent/CN202004699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510513A (en) * | 2018-07-18 | 2019-03-22 | 上海锐机电有限公司 | A kind of side pushes away big function equipment Soft Starting System |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20181225 |