CN201674442U - Reduced-voltage starting control circuit of autotransformer - Google Patents
Reduced-voltage starting control circuit of autotransformer Download PDFInfo
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- CN201674442U CN201674442U CN2010201819154U CN201020181915U CN201674442U CN 201674442 U CN201674442 U CN 201674442U CN 2010201819154 U CN2010201819154 U CN 2010201819154U CN 201020181915 U CN201020181915 U CN 201020181915U CN 201674442 U CN201674442 U CN 201674442U
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- 238000012423 maintenance Methods 0.000 abstract description 4
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- 230000005611 electricity Effects 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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Abstract
The utility model discloses a reduced-voltage starting control circuit of an autotransformer, in particular to improvement on the reduced-voltage starting control circuit of the autotransformer. The reduced-voltage starting control circuit comprises a main circuit and a control circuit, wherein the main circuit is provided with a starting circuit breaker KM1, an operating circuit breaker KM2 and an autotransformer TM; and the control circuit is provided with intermediate relays of KC1 and KC2, a time relay KT, a stopping button S0, a manual starting button S1, a manual operating button S2 and an automatic starting button S3. In the utility model, two starting operation modes can be provided for selection; the utility model has simple structure and convenient maintenance; after being normally operated, all relays are cut from the work state, thereby prolonging the service life of components and reducing the fault rate; the requirement of reduced-voltage starting of the motor can be met with fewer material and less input; and the utility model has defined and effective linking relationship and can ensure the safety and reliability demands in the operation and use processes.
Description
Technical field
The utility model relates to the reduced-voltage starting control loop, specifically is the transformation to a kind of auto-transformer reduced-voltage starting control loop.
Background technology
Be used for the start-up control of heavy-duty motor from the lotus root reduced-voltage starting more, be used to solve because of the excessive problem of across-the-line starting impulse current.At present, will be with a plurality of high-power contactors from the lotus root reduced-voltage starting, and also power cable wiring trouble, control loop circuit are also more, bring difficulty to maintenance, and operation energy consumption are bigger.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of auto-transformer reduced-voltage starting control loop simple in structure, easy to maintenance is provided.
Technical solution of the present utility model is: it comprises major loop and control loop, major loop is provided with and starts circuit breaker KM1, operating circuit breaker KM2 and auto-transformer TM, described control loop is provided with auxiliary relay KC1, KC2, time relay KT, stop button S0, manual actuation of button S1, manually move button S2 and auto-start button S3, be connected in series stop button S0 between the two ends of control loop successively, manual actuation of button S1, the normally-closed contact of operating circuit breaker KM2, the coil of the normally-closed contact of auxiliary relay KC2 and startup circuit breaker KM1, a normally opened contact that starts circuit breaker KM1 and auxiliary relay KC1 is in parallel with manual actuation of button S1 respectively; Two ends after manually the coil of the normally-closed contact of operation button S2 and operating circuit breaker KM2 and auxiliary relay KC2 is connected successively are connected on the b node behind a node and the startup circuit breaker KM1 coil between stop button S0 and the manual actuation of button S1 respectively, the normally opened contact of auxiliary relay KC2 is with manually operation button S2 is in parallel, and the normally-closed contact of time relay KT is with in parallel with manual operation button S2 again after the normally opened contact of auxiliary relay KC1 is connected; Be connected between a node and b node again with after the coil of a normally-closed contact that starts circuit breaker KM1 and operating circuit breaker KM2 is connected successively after the normally opened contact parallel connection of the normally opened contact of auxiliary relay KC2 and operating circuit breaker KM2; Be connected between a node and b node again with after the coil of the normally-closed contact of operating circuit breaker KM2 and time relay KT is connected successively after the normally opened contact parallel connection of auto-start button S3 and time relay KT; Be connected between a node and b node again with after the coil of the normally-closed contact of auxiliary relay KC2 and auxiliary relay KC1 is connected successively after the normally opened contact parallel connection of the normally opened contact of time relay KT and auxiliary relay KC1.
Technique effect of the present utility model is: it has following advantage:
1, there are two kinds of start-up operation modes selective;
2, simple in structure, easy to maintenance;
3, after the normal operation, all relays are all excised from operating state, have prolonged the useful life of parts, have reduced failure rate;
4, satisfied the requirement of motor reduced-voltage starting with less material and input;
5, linkage relationship is clearly effective, can guarantee to operate and the fail safe and the reliability requirement of use.
Description of drawings
Fig. 1 is reduced-voltage starting control principle figure of the present utility model.
Embodiment
As shown in Figure 1, it comprises major loop and control loop, major loop is provided with and starts circuit breaker KM1, operating circuit breaker KM2 and auto-transformer TM, three AC power A, B, C is connected with major loop by major loop isolating switch QS, major loop is provided with the operating circuit breaker KM2 that connects motor, auto-transformer TM is in parallel with operating circuit breaker KM2 by starting circuit breaker KM1, control loop is in operating circuit breaker KM2 front end and three AC power A, B, two connections among the C, described control loop is provided with auxiliary relay KC1, KC2 and time relay KT and stop button S0, manual actuation of button S1, manually move button S2 and auto-start button S3, be connected in series stop button S0 between the two ends of control loop successively, manual actuation of button S1, the normally-closed contact of operating circuit breaker KM2, the coil of the normally-closed contact of auxiliary relay KC2 and startup circuit breaker KM1, a normally opened contact that starts circuit breaker KM1 and auxiliary relay KC1 is in parallel with manual actuation of button S1 respectively; Two ends after manually the coil of the normally-closed contact of operation button S2 and operating circuit breaker KM2 and auxiliary relay KC2 is connected successively are connected on the b node behind a node and the startup circuit breaker KM1 coil between stop button S0 and the manual actuation of button S1 respectively, the normally opened contact of auxiliary relay KC2 is with manually operation button S2 is in parallel, and the normally-closed contact of time relay KT is with in parallel with manual operation button S2 again after the normally opened contact of auxiliary relay KC1 is connected; Be connected between a node and b node again with after the coil of a normally-closed contact that starts circuit breaker KM1 and operating circuit breaker KM2 is connected successively after the normally opened contact parallel connection of the normally opened contact of auxiliary relay KC2 and operating circuit breaker KM2; Be connected between a node and b node again with after the coil of the normally-closed contact of operating circuit breaker KM2 and time relay KT is connected successively after the normally opened contact parallel connection of auto-start button S3 and time relay KT; Be connected between a node and b node again with after the coil of the normally-closed contact of auxiliary relay KC2 and auxiliary relay KC1 is connected successively after the normally opened contact parallel connection of the normally opened contact of time relay KT and auxiliary relay KC1.
Be serially connected with major loop fuse FU1 on the described major loop.
Described major loop was established ammeter and hot protective relay JR before output, the normally-closed contact of hot protective relay JR is serially connected in an end of control loop.
Be serially connected with control loop fuse FU2 on the described control loop.
Described control loop is provided with manually, operation and automatic pilot lamp are connected in parallel between a node and b node respectively with after a normally opened contact that starts circuit breaker KM1, operating circuit breaker KM2 and time relay KT is connected.
Operation principle:
1, manually boots
When artificial control cycling start and operation, press the S1 button, auto-transformer is put into operation by the closure of KM1.After treating electric motor starting and reaching the startup rotating speed, press the S2 button.At this moment, the charged work of KC2, and KM2 can not enter operating state at once after it must wait until the KM1 dead electricity, is connected on interlocking point KM1 on the KM2 loop when returning to normally off, and KM2 just puts into operating state, and motor is moved under normal voltage.
2, start automatically
When desiring to carry out the operation of one-key operation startup and operation, press the S3 button.At this moment, at first be that the time relay enters operating state, the charged work of KC1 simultaneously, and, make motor be in starting state to the KM1 power supply.After default time-delay because KC1 is still in running order, therefore, after time relay K T outage, by be connected in parallel on KT on the S2 and KC1 and relation, send to KC2.When KC2 was charged, KM2 is cut to go out starting state, is connected on the interlocking point KM1 closure on the KM2 loop, and KM2 obtains electricity work, makes motor enter normal operating condition.
When 3, stopping, only need press S0 and get final product.
Claims (6)
1. auto-transformer reduced-voltage starting control loop, comprise major loop and control loop, major loop is provided with and starts circuit breaker KM1, operating circuit breaker KM2 and auto-transformer TM, it is characterized in that, described control loop is provided with auxiliary relay KC1, KC2, time relay KT, stop button S0, manual actuation of button S1, manually move button S2 and auto-start button S3, be connected in series stop button S0 between the two ends of control loop successively, manual actuation of button S1, the normally-closed contact of operating circuit breaker KM2, the coil of the normally-closed contact of auxiliary relay KC2 and startup circuit breaker KM1, a normally opened contact that starts circuit breaker KM1 and auxiliary relay KC1 is in parallel with manual actuation of button S1 respectively; Two ends after manually the coil of the normally-closed contact of operation button S2 and operating circuit breaker KM2 and auxiliary relay KC2 is connected successively are connected on the b node behind a node and the startup circuit breaker KM1 coil between stop button S0 and the manual actuation of button S1 respectively, the normally opened contact of auxiliary relay KC2 is with manually operation button S2 is in parallel, and the normally-closed contact of time relay KT is with in parallel with manual operation button S2 again after the normally opened contact of auxiliary relay KC1 is connected; Be connected between a node and b node again with after the coil of a normally-closed contact that starts circuit breaker KM1 and operating circuit breaker KM2 is connected successively after the normally opened contact parallel connection of the normally opened contact of auxiliary relay KC2 and operating circuit breaker KM2; Be connected between a node and b node again with after the coil of the normally-closed contact of operating circuit breaker KM2 and time relay KT is connected successively after the normally opened contact parallel connection of auto-start button S3 and time relay KT; Be connected between a node and b node again with after the coil of the normally-closed contact of auxiliary relay KC2 and auxiliary relay KC1 is connected successively after the normally opened contact parallel connection of the normally opened contact of time relay KT and auxiliary relay KC1.
2. auto-transformer reduced-voltage starting control loop as claimed in claim 1 is characterized in that, is serially connected with major loop fuse FU1 on the described major loop.
3. auto-transformer reduced-voltage starting control loop as claimed in claim 1 or 2 is characterized in that, described major loop was established ammeter and hot protective relay JR before output, and the normally-closed contact of hot protective relay JR is serially connected in an end of control loop.
4. auto-transformer reduced-voltage starting control loop as claimed in claim 1 is characterized in that, is serially connected with control loop fuse FU2 on the described control loop.
5. as claim 1 or 4 described auto-transformer reduced-voltage starting control loops, it is characterized in that described control loop is provided with manually, operation and automatic pilot lamp are connected in parallel between a node and b node respectively with after a normally opened contact that starts circuit breaker KM1, operating circuit breaker KM2 and time relay KT is connected.
6. auto-transformer reduced-voltage starting control loop as claimed in claim 3, it is characterized in that described control loop is provided with manually, operation and automatic pilot lamp are connected in parallel between a node and b node respectively with after a normally opened contact that starts circuit breaker KM1, operating circuit breaker KM2 and time relay KT is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201819154U CN201674442U (en) | 2010-05-07 | 2010-05-07 | Reduced-voltage starting control circuit of autotransformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201819154U CN201674442U (en) | 2010-05-07 | 2010-05-07 | Reduced-voltage starting control circuit of autotransformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674442U true CN201674442U (en) | 2010-12-15 |
Family
ID=43331849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201819154U Expired - Fee Related CN201674442U (en) | 2010-05-07 | 2010-05-07 | Reduced-voltage starting control circuit of autotransformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201674442U (en) |
-
2010
- 2010-05-07 CN CN2010201819154U patent/CN201674442U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20110507 |