CN104009677A - Star-delta conversion contactor - Google Patents
Star-delta conversion contactor Download PDFInfo
- Publication number
- CN104009677A CN104009677A CN201410255316.5A CN201410255316A CN104009677A CN 104009677 A CN104009677 A CN 104009677A CN 201410255316 A CN201410255316 A CN 201410255316A CN 104009677 A CN104009677 A CN 104009677A
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- China
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- star
- conversion
- contact
- contactor
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Abstract
A star-delta conversion contactor comprises a star conversion short-circuited connection contact (1), a main contactor contact (2), a double-sided contact head (3), a main star-delta conversion contact (4), armature iron (5), electromagnetic coils (6), an iron core (7) and a thrust spring (8). The star conversion short-circuited connection contact (1) is used for directly connecting three star lines, so that the three star lines are short-circuited. When power supply time set by a time delay is up, the double-sided contact head (3) falls off and is connected with the main contactor contact (2) and the lower end of the main star-delta conversion contact (4). When falling off, the double-sided contact head (3) is separated from the star conversion short-circuited connection contact (1) and the upper end of the main star-delta conversion contact (4), wherein the double-sided contact head (3) is originally connected with the star conversion short-circuited connection contact (1) and the upper end of the main star-delta conversion contact (4). Through the connecting mode, when motor starting is completed, the number of AC contactors is changed from three to two, and the purpose of omitting one AC contactor is achieved.
Description
Technical field
The invention belongs to electric elements field, relate in particular to a kind of star angle for motor and start electric device.
Background technology
Along with the raising of modern domestic, technicalization process, domestic enterprises and institutions are due to the continuous expansion of construction scope, industrial equipment is on the increase, application for motor is also improving, the installation of motor is also most basic electric equipment, the motor wiring on basis is made up of six roots of sensation line, the following motor of 3KW (comprising 3KW) conventionally, and Starting mode is all that wye connection starts.The motor that 4KW (comprising 4KW) is above, Starting mode is all that direct angle type connection starts.The above high power motor of 15KW starts upper, and method has a lot, but great majority use two kinds of methods, and one is variable frequency starting, counter investment greatly, expend the energy.Maximum shortcoming is that radiating effect is very poor, often occurs causing because rotating speed is low heat radiation bad, and motor protection against overheat is shut down.Another kind is that the most frequently used star angle starts, start by star angle conversion decompression, complete the startup running of motor, so can be because of the excessive problem of the power of motor own, cause the unstable of electrical network, cause damage to local power equipment, and the mode of connection that star angle starts is generally by the time relay and three A.C. contactors, control, reach the object that star angle starts, and because the mechanical breakdown of electric elements fault and contactor, the failure that also can cause star angle to start, for example the time relay damages, or when mistake is set, star connects A.C. contactor and fails to disconnect, power with the adhesive of hour angle type contactor again, cause phase fault, cause motor to break down, A.C. contactor is caused to serious damage.The main contacts of mechanical part A.C. contactor does not separate in addition, and auxiliary contact operate time in advance or after de-, also can be caused A.C. contactor phase fault.
Summary of the invention
While startup by star angle for fear of motor, there is unnecessary fault, and reduce the electric elements in controller switching equipment, design a kind of novel star angle connection device, each motor can reduce by an A.C. contactor, reduce installation cost, the invention provides a kind of new-type star angle conversion contactor.
The present invention realizes like this, whole device comprises: star conversion short circuit connecting terminal, contactor main contacts, two-sided contact, star angle conversion main contacts, armature, solenoid, iron core, thrust spring, star conversion short circuit connecting terminal is directly connected three star lines, makes the short circuit of three star lines; When the time of advent, relay was set power-on time, two-sided contact falls and is connected with contactor main contacts, conversion main contacts lower end, star angle, when two-sided contact drop action, changes the separation of main contacts upper end with the star conversion short circuit connecting terminal, the star angle that are connected before.
By this connected mode, in the time completing electric motor starting, make original three A.C. contactors become two, reach the object that reduces by an A.C. contactor.
The invention has the beneficial effects as follows: design new-type star angle conversion contactor, reduce the use of appliance component, simplify mounting means, save time, laborsaving, save space, main is to have avoided machinery and electric component fault to cause more serious electric device to damage, and has avoided the generation of phase fault situation.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described
Fig. 1 is front view of the present invention.
Fig. 2 is vertical view of the present invention.
1. star conversion short circuit connecting terminals in figure, 2. contactor main contacts, 3. two-sided contact, 4. star angle conversion main contacts, 5. armature, 6. solenoid, 7. iron core, 8. thrust spring.
Embodiment
As shown in drawings, existing contrast figure, is described as follows specific embodiments of the invention:
Whole device comprises: star conversion short circuit connecting terminal 1, contactor main contacts 2, two-sided contact 3, star angle conversion main contacts 4, armature 5, solenoid 6, iron core 7, thrust spring 8.
Motor is by star reduced-voltage starting, after corner connection energising, adjust the time relay according to different motors, the solenoid 6 of star angle conversion contactor is moved, and armature 5, because of electromagnetism action action downwards, is drawn close to unshakable in one's determination 7, thrust spring 8 because of the strength of electromagnetism solenoid 6 compressed, two-sided contact 3 disconnects star conversion short circuit connecting terminal 1, and when dividing, star angle conversion main contacts 4 contacts two-sided contact 3 opposite sides.
The present invention is not limited to the present embodiment, and equivalent concepts or change in any technical scope disclosing in the present invention, all classify protection scope of the present invention as.
Claims (1)
1. a star angle conversion contactor, it is characterized in that: whole device comprises star conversion short circuit connecting terminal (1), contactor main contacts (2), two-sided contact (3), star angle conversion main contacts (4), armature (5), solenoid (6), (7), thrust spring (8) unshakable in one's determination, star conversion short circuit connecting terminal (1) is directly connected three star lines, makes the short circuit of three star lines; When the time of advent, relay was set power-on time, two-sided contact (3) falls and is connected with contactor main contacts (2), conversion main contacts (4) lower end, star angle, when two-sided contact (3) drop action, separates with the star conversion short circuit connecting terminal (1) being connected before, conversion main contacts (4) upper end, star angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255316.5A CN104009677A (en) | 2014-06-10 | 2014-06-10 | Star-delta conversion contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255316.5A CN104009677A (en) | 2014-06-10 | 2014-06-10 | Star-delta conversion contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104009677A true CN104009677A (en) | 2014-08-27 |
Family
ID=51370201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410255316.5A Pending CN104009677A (en) | 2014-06-10 | 2014-06-10 | Star-delta conversion contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104009677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057823A1 (en) | 2018-09-17 | 2020-03-26 | Arcelik Anonim Sirketi | Motor terminal for quick connection shift |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354885A (en) * | 1999-05-11 | 2002-06-19 | 株式会社因特文讯 | Magnetic contactor for star-delta connections |
| CN2512158Y (en) * | 2001-11-16 | 2002-09-18 | 韩一松 | Y-delta starting contactor |
| CN2636499Y (en) * | 2003-03-18 | 2004-08-25 | 无锡韩光电器有限公司 | Integrated star-delta motor starter |
-
2014
- 2014-06-10 CN CN201410255316.5A patent/CN104009677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354885A (en) * | 1999-05-11 | 2002-06-19 | 株式会社因特文讯 | Magnetic contactor for star-delta connections |
| CN2512158Y (en) * | 2001-11-16 | 2002-09-18 | 韩一松 | Y-delta starting contactor |
| CN2636499Y (en) * | 2003-03-18 | 2004-08-25 | 无锡韩光电器有限公司 | Integrated star-delta motor starter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057823A1 (en) | 2018-09-17 | 2020-03-26 | Arcelik Anonim Sirketi | Motor terminal for quick connection shift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |
|
| WD01 | Invention patent application deemed withdrawn after publication |