CN204216801U - A kind of built in bypass type soft starter - Google Patents
A kind of built in bypass type soft starter Download PDFInfo
- Publication number
- CN204216801U CN204216801U CN201420623584.3U CN201420623584U CN204216801U CN 204216801 U CN204216801 U CN 204216801U CN 201420623584 U CN201420623584 U CN 201420623584U CN 204216801 U CN204216801 U CN 204216801U
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- CN
- China
- Prior art keywords
- soft starter
- circuit board
- built
- silicon controlled
- thyristor
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Abstract
The utility model discloses a kind of built in bypass type soft starter, comprise power supply, soft starter and motor, power supply connects soft starter, soft starter connects motor, soft starter comprises major loop, current transformer and circuit board, current transformer to be located on major loop and to be connected with circuit board, and circuit board drives with silicon controlled component in major loop and is connected, and major loop is formed by built in bypass contactor is in parallel with silicon controlled component; Silicon controlled component comprises the first thyristor and the second thyristor, the first thyristor and the parallel connection of the second thyristor.Technique scheme is adopted to make a kind of easy to use, built in bypass type soft starter of not producing arcing.Contactor is integrated in soft starter, decreases parts, reduce volume, convenient and practical and greatly reduce cost.By silicon controlled component and circuit board and built in bypass contactor with the use of, ensure that and realize electronic arc eliminating completely.Whole equipment is safe and reliable, and can steady in a long-termly run.
Description
Technical field
The utility model relates to soft starter field, particularly a kind of built in bypass type soft starter.
Background technology
In eighties of last century eighties, the ideal product that soft starter has become motor starting to control, has filled up star-delta starter and the wide gap of frequency converter between practical function and price.Its course of work is all adopt thyristor to start additional contactor bypass.Effectively can control motor voltage during starting, make it raise gradually in starting process, very naturally control starting current, make machinery and electric stress be down to minimum.Therefore soft starter is commercially used widely.But bypass contactor often all will configure in addition, and disjunction can produce arcing when high-voltage large current.
Electric arc is a kind of gas discharge phenomenon, the moment spark that electric current is produced by some dielectric (such as air).Rated short circuit drop-out current refers to the maximum capacity of switch limit turn-off current, ward off as switch shows rated short circuit drop-out current 20KA, represent that the short circuit tripping operation contact arc-extinguishing thermal element action in 20KA etc. is effective, exceed the tripping operation of this limit, the action of joint arc extinguishing thermal element does not ensure, can produce arcing.And arcing often causes the one of the main reasons of device damage.
Due to the high voltage and current in the soft starter course of work, arcing will certainly be produced.Therefore, inevitable meeting produces harmful effect to equipment.
Existing bypass runs soft starter and just installs a set of A.C. contactor in parallel with thyristor additional on the side of soft starter, to complete the bypass after starting.Arc-suppression function only relies on the arc extinguishing grid of A.C. contactor itself to realize, and has significant limitation.Moreover this external bypass soft starter needs user to configure the bypass contactor of certain specification and the peripheral casing of necessity in addition and circuit ability is normal works; inconvenience very; user cost is increased; and when bad environments or supply voltage on the low side often can damage, affect normal production operation.
Utility model content
In order to solve the problem, the utility model provides a kind of easy to use, built in bypass type soft starter of not producing arcing.
A kind of built in bypass type soft starter in the utility model, comprise power supply, soft starter and motor, described power supply connects soft starter, described soft starter connects motor, described soft starter comprises major loop, current transformer and circuit board, described current transformer to be located on major loop and to be connected with circuit board, and described circuit board drives with silicon controlled component in major loop and is connected, and described major loop is formed by built in bypass contactor is in parallel with silicon controlled component;
Silicon controlled component comprises the first thyristor and the second thyristor, described first thyristor and the parallel connection of the second thyristor.
In such scheme, also comprise base shell, be provided with radiator in described base shell, described radiator is provided with transformer and major loop, and described major loop is provided with current transformer.Current transformer is used for detecting size of current, and silicon controlled component can be controlled by the triggering signal that circuit board sends, and changes the angle of flow of thyristor thus changes the size flowing through thyristor current flows.
In such scheme, also comprise circuit board case, described circuit board case and base shell fasten.Circuit board case and base shell can well protect inner structure not to be damaged.
In such scheme, described circuit board case is provided with display panel, and described display panel is connected with main circuit board.Display panel is used for showing the required data understood.
In such scheme, described base shell both sides are provided with output guard cover.Protective cover better protects inner various structures.
Advantage of the present utility model and beneficial effect are: the utility model provides a kind of easy to use, built in bypass type soft starter of not producing arcing.Contactor is integrated in soft starter, decreases parts, reduce volume, convenient and practical and greatly reduce cost.By silicon controlled component and circuit board and built in bypass contactor with the use of, ensure that and realize electronic arc eliminating completely.Whole equipment is safe and reliable, and can steady in a long-termly run.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is structural representation of the present utility model.
In figure: 1, power supply 2, soft initiator 3, motor 4, current transformer
5, circuit board 6, major loop 7, first thyristor
8, the second thyristor 9, base shell 10, radiator 11, transformer
12, silicon controlled component 13, copper bar 14, built in bypass contactor
15, circuit board case 16, display panel 17, output guard cover
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
As shown in Figure 1, the utility model is a kind of built in bypass type soft starter, comprise power supply 1, soft starter 2 and motor 3, power supply 1 connects soft starter 2, soft starter 2 connects motor 3, and soft starter 2 comprises major loop 6, current transformer 4 and circuit board 5, and current transformer 4 to be located on major loop 6 and to be connected with circuit board 4, circuit board 4 drives with the silicon controlled component 12 in major loop 6 and is connected, and major loop 6 is formed by built in bypass contactor 14 is in parallel with silicon controlled component 12; It is in parallel that silicon controlled component 12 comprises the first thyristor 7 and the second thyristor 8, first thyristor 7 and the second thyristor 8.
As shown in Figure 2, also comprise base shell 9, radiator 10 is provided with in base shell 9, radiator 10 is provided with transformer 11 and silicon controlled component 12, transformer 11 connects power supply 1 and circuit board 5, current transformer 4 to be located on copper bar 13 and to be connected with circuit board 5, and silicon controlled component 12 is connected with circuit board 5.Current transformer 4 is used for detecting size of current, objectively can demonstrate current value on the one hand, can implement protection on the other hand to whole circuit; Silicon controlled component 12 can accept the triggering signal that circuit board 5 produces, and changes the angle of flow of silicon controlled component 12, and changes the size flowing through silicon controlled component 12 electric current.
Also comprise circuit board case 15, circuit board case 15 and base shell 9 fasten.Circuit board case 15 is provided with display panel 16, and display panel 16 is connected with circuit board 5.Base shell 9 both sides are provided with output guard cover 17.
After power supply 1 is connected, power supply conducts silicon controlled component 12 by copper bar 13.Power supply 1 is added to power supply on circuit board 5 by transformer 11, and circuit board 5 is started working.Display floater 16 shows current state.After pressing the initiate key on display floater 16, input starting command, circuit board 5 sends drive singal and is added on silicon controlled component 12, and silicon controlled component 12 is controlled open-minded.Power supply 1 is loaded on motor 3 by silicon controlled component 12, makes motor 3 start to start.Circuit board 5 is automatically by the angle of flow of drive signal waveform adjustment silicon controlled component 12, and the electric current and the voltage that make to flow through silicon controlled component 12 slowly rise, thus make motor 3 smooth start, until started rear motor 3 to start full speed running.Now circuit board 5 sends by-passing signal, makes built in bypass contactor 14 adhesive, and power supply is directly loaded on motor 3 by built in bypass contactor 14, continues to maintain motor 3 full speed running, thus makes motor 3 enter normal operating conditions.Then stop the triggering signal of silicon controlled component 12, make silicon controlled component 12 turn off thus depart from electric motor loop.When needs are shut down, circuit board 5 first sends triggering signal and opens silicon controlled component 12, makes silicon controlled component 12 open thus add electric motor loop.And then turn off by-passing signal, built in bypass contactor 14 is disconnected, and then passes through the triggering signal of adjustment silicon controlled component 12 thus silicon controlled component 12 is turned off gradually.
In this process, built in bypass contactor 14 disconnect moment due to silicon controlled component 12 open-minded, power supply 1 makes motor 3 remain in operation by silicon controlled component 12, so can not arcing be produced, and the use of silicon controlled component 12 progressively can change the size of electric current, instead of make suddenly electric current increase or reduce, avoid the generation of electronics arcing from source, achieve electronic arc eliminating from root.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a built in bypass type soft starter, comprise power supply, soft starter and motor, described power supply connects soft starter, described soft starter connects motor, it is characterized in that, described soft starter comprises major loop, current transformer and circuit board, and described current transformer to be located on major loop and to be connected with circuit board, described circuit board drives with silicon controlled component in major loop and is connected, and described major loop is formed by built in bypass contactor is in parallel with silicon controlled component;
Silicon controlled component comprises the first thyristor and the second thyristor, described first thyristor and the parallel connection of the second thyristor.
2. a kind of built in bypass type soft starter according to claim 1, it is characterized in that, also comprise base shell, be provided with radiator in described base shell, described radiator is provided with transformer and major loop, and described major loop is provided with current transformer.
3. a kind of built in bypass type soft starter according to claim 2, it is characterized in that, also comprise circuit board case, described circuit board case and base shell fasten.
4. a kind of built in bypass type soft starter according to claim 3, it is characterized in that, described circuit board case is provided with display panel, and described display panel is connected with main circuit board.
5. a kind of built in bypass type soft starter according to claim 4, it is characterized in that, described base shell both sides are provided with output guard cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623584.3U CN204216801U (en) | 2014-10-24 | 2014-10-24 | A kind of built in bypass type soft starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623584.3U CN204216801U (en) | 2014-10-24 | 2014-10-24 | A kind of built in bypass type soft starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216801U true CN204216801U (en) | 2015-03-18 |
Family
ID=52985434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420623584.3U Expired - Fee Related CN204216801U (en) | 2014-10-24 | 2014-10-24 | A kind of built in bypass type soft starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320022A (en) * | 2014-10-24 | 2015-01-28 | 上海数恩电气科技有限公司 | Internal bypass type soft starter |
-
2014
- 2014-10-24 CN CN201420623584.3U patent/CN204216801U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320022A (en) * | 2014-10-24 | 2015-01-28 | 上海数恩电气科技有限公司 | Internal bypass type soft starter |
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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: 20150318 Termination date: 20211024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |