CN201352777Y - Soft starter for electric motor - Google Patents
Soft starter for electric motor Download PDFInfo
- Publication number
- CN201352777Y CN201352777Y CNU2008201515325U CN200820151532U CN201352777Y CN 201352777 Y CN201352777 Y CN 201352777Y CN U2008201515325 U CNU2008201515325 U CN U2008201515325U CN 200820151532 U CN200820151532 U CN 200820151532U CN 201352777 Y CN201352777 Y CN 201352777Y
- Authority
- CN
- China
- Prior art keywords
- soft starter
- electric motor
- bypass
- starter
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a soft starter for an electric motor, in particular to a soft starter with an overload protection. A bypass consists of two pieces of single-phase controlled silicon which are connected in parallel, and is controlled by a bypass contactor. Compared with the prior art, the soft starter has the advantages that energy-saving function is specially provided, load voltage is automatically reduced when the electric motor runs in idle load or light load, power factor is improved, copper loss and iron loss are reduced and energy-saving effect is realized; and the corresponding particular starting method is set for particular loads, such as pulse ballastic kick and the like, and an advanced electronic overload trip protective function plate can be selected, thereby providing the overload protection which is more effective than the conventional double sheet metal overheating protection for the electric motor and a starter.
Description
[technical field]
The utility model relates to a kind of motor soft starter, especially a kind of soft starter that overload protection is arranged.
[background technology]
At present, known soft-starter control function and imperfection and lack a lot of defencive functions, as the impact of the electric current in motor starting, the stopped process, net capacity height, impact of machinery etc. during electric motor starting.For example as most widely used squirrel cage asynchronous motor, it adopts the condition of reduced voltage starting: the one, and during motor starting, machinery can not bear the impact torque of direct-on-line starting; The 2nd, during motor starting, its terminal voltage can not satisfy code requirement; The 3rd, during motor starting, influence the normal operation of other loads.
[summary of the invention]
In order to overcome the deficiency of present motor soft starter; the utility model relates to a kind of motor soft starter that overload protection is arranged; have the electronic overload protection of adjusting, open phase protection, overcurrent protection, overheat protector on its control panel; and have self diagnosis and a function such as energy-conservation; it is characterized in that: wherein bypass is by two single-phase silicon-controlled composing in parallel, and wherein controllable silicon is controlled with a bypass contactor.Its bypass is external, also can not be with the bypass operation.
The technical scheme that its technical problem that solves the utility model adopts is: adding has electronic overload protection, open phase protection, overcurrent protection, overheat protector in motor soft starter; and have self diagnosis and a function such as energy-conservation; ad hoc power saving function reduces load voltage automatically when motor operates in zero load or underloading; improve power factor (PF) and reduce copper loss and iron loss; realize energy-saving effect, corresponding special start mode is set at specific loads.
The beneficial effects of the utility model are, the sound construction compactness is quick and easy for installation, the parameter simple, intuitive.For heavy load designs special start mode.
[description of drawings]
Fig. 1 is a fundamental diagram of the present utility model.
[embodiment]
When using soft starter described in the utility model, the output voltage of thyristor increases gradually, and motor quickens to know the full conducting of thyristor gradually, motor is operated on the mechanical property of rated operational voltage, realize level and smooth the startup, reduce starting current, avoid starting overcurrent tripping.When treating that motor reaches rated revolution, start-up course finishes, soft initiator replaces the thyristor of having finished the work from employing bypass contactor, be motor normal operation rated voltage, reduced the thermal losses of thyristor, prolong the useful life of soft initiator, improve its operating efficiency, make electrical network avoid harmonic pollution again.Soft initiator of the present utility model also provides open phase protection, overcurrent protection, overheat protector, and has self diagnosis and function such as energy-conservation.
Claims (2)
1, a kind of motor soft starter; have the electronic overload protection of adjusting, open phase protection, overcurrent protection, overheat protector on the control panel; and have self diagnosis and a function such as energy-conservation; it is characterized in that: wherein bypass is by two single-phase silicon-controlled composing in parallel, and wherein controllable silicon is controlled with a bypass contactor.
2, a kind of motor soft starter according to claim 1, it is characterized in that: its bypass is external, also can not be with the bypass operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201515325U CN201352777Y (en) | 2008-08-01 | 2008-08-01 | Soft starter for electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201515325U CN201352777Y (en) | 2008-08-01 | 2008-08-01 | Soft starter for electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201352777Y true CN201352777Y (en) | 2009-11-25 |
Family
ID=41376159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201515325U Expired - Fee Related CN201352777Y (en) | 2008-08-01 | 2008-08-01 | Soft starter for electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201352777Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316388A (en) * | 2018-03-20 | 2018-07-24 | 徐州徐工矿山机械有限公司 | A kind of the electric hydraulic excavating machine control system and method for configuration soft starter device |
-
2008
- 2008-08-01 CN CNU2008201515325U patent/CN201352777Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316388A (en) * | 2018-03-20 | 2018-07-24 | 徐州徐工矿山机械有限公司 | A kind of the electric hydraulic excavating machine control system and method for configuration soft starter device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SOLCOM + HAPN (SHANGHAI) ELECTRIC CO., LTD. Free format text: FORMER NAME: SOLCOM (SHANGHAI) INDUSTRIAL CONTROL EQUIPMENSTS CO.,LTD |
|
| CP03 | Change of name, title or address |
Address after: 201908 No. 8017 Hu Tai Road, Shanghai, Baoshan District Patentee after: SOLCOM & Hapn (Shanghai) Electric Co., Ltd. Address before: 200949 No. 8889 Hu Tai Road, Baoshan District Industrial Zone, Shanghai, China Patentee before: Shanghai Solcom Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20140801 |
|
| EXPY | Termination of patent right or utility model |