CN204333930U - Intelligent weak current switch - Google Patents
Intelligent weak current switch Download PDFInfo
- Publication number
- CN204333930U CN204333930U CN201420792458.0U CN201420792458U CN204333930U CN 204333930 U CN204333930 U CN 204333930U CN 201420792458 U CN201420792458 U CN 201420792458U CN 204333930 U CN204333930 U CN 204333930U
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- CN
- China
- Prior art keywords
- coil
- magnet
- switch
- sensitive switch
- weak current
- 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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Abstract
The utility model discloses a kind of Intelligent weak current switch, belong to technical field of motors, comprise the three phase mains be connected with threephase motor through magnet-sensitive switch, described magnet-sensitive switch periphery is wound with corresponding coil.The utility model structure is simple, and by being wound with coil in magnet-sensitive switch periphery, protection threephase motor does not burn because of phase shortage, extends its useful life.
Description
Technical field
The utility model belongs to technical field of motors, relates to a kind of motor, specifically a kind of Intelligent weak current switch.
Background technology
Threephase motor refers to the threephase stator winding (each difference 120 degree of electrical degrees) when motor, after passing into three-phase alternating current, by generation rotating magnetic field, this rotating magnetic field cutting rotor winding, thus in rotor windings, produce induced current (rotor windings is close access), the rotor conductor of current-carrying will produce electromagnetic force under the effect of stator rotating magnetic field, thus electromagnetic torque is formed on machine shaft, drive motor rotates, and motor direction of rotation is identical with rotating magnetic field direction.
During practical application; due to the various factors of instability; the phase shortage of such as power supply; three-phase motor open-phase is caused to burn phenomenon serious; market upper motor protector is of a great variety; but because failure rate is high or install and loaded down with trivial detailsly can not to promote the use of always, phase-defect of motor burns phenomenon and still accounts for failure rate more than 85%.In order to protect threephase motor, now provide a kind of technical scheme.
Utility model content
The purpose of this utility model is to provide a kind of Intelligent weak current switch.
The purpose of this utility model can be achieved through the following technical solutions:
Intelligent weak current switch, comprises the three phase mains be connected with threephase motor through magnet-sensitive switch, and described magnet-sensitive switch periphery is wound with corresponding coil.
Described magnet-sensitive switch comprises the first magnet-sensitive switch, the second magnet-sensitive switch, the 3rd magnet-sensitive switch, and described coil is made up of the first coil, the second coil, tertiary coil.
Described first coil, the second coil, tertiary coil include the electric motor starting button, mains switch and the relay that are connected successively by wire, and described electric motor starting button is parallel with protection switch.
Described first coil, the second coil are all connected with any two-phase power supply of three phase mains with the wire two ends of tertiary coil.
The beneficial effects of the utility model: the utility model structure is simple, by being wound with coil in magnet-sensitive switch periphery, protection threephase motor does not burn because of phase shortage, extends its useful life.
Accompanying drawing explanation
The utility model to be further described below in conjunction with accompanying drawing for the ease of it will be appreciated by those skilled in the art that.
Fig. 1 is the utility model electrical block diagram.
Fig. 2 is the utility model first coil electrical block diagram.
Fig. 3 is the utility model second coil circuit structural representation.
Fig. 4 is the utility model tertiary coil electrical block diagram.
Embodiment
As shown in Figure 1, Intelligent weak current switch, three phase mains 4 is connected with threephase motor 3 through magnet-sensitive switch 1, and magnet-sensitive switch 1 periphery is wound with corresponding coil 2.Magnet-sensitive switch 1 comprises the first magnet-sensitive switch 1.1, second magnet-sensitive switch 1.2, the 3rd magnet-sensitive switch 1.3, and coil 2 is made up of the first coil 2.1, second coil 2.2, tertiary coil 2.3.First magnet-sensitive switch 1.1, second magnet-sensitive switch 1.2, the 3rd magnet-sensitive switch 1.3 and the first coil 2.1, second coil 2.2, tertiary coil 2.3 one_to_one corresponding.First coil 2.1, second coil 2.2, tertiary coil 3.3 include the electric motor starting button 5, mains switch 7 and the relay 8 that are connected successively by wire, and electric motor starting button 5 is parallel with protection switch 6.
As Fig. 2; first coil 2.1 is made up of the electric motor starting button 5 connected successively by wire, mains switch 7, relay 8 and the protection switch 6 in parallel with electric motor starting button 5; wire two ends are connected with the two-phase power supply 4.1 of three phase mains 4, and it is peripheral that the first coil 2.1 is centered around the first magnet-sensitive switch 1.1.
As Fig. 3; second coil 2.2 is made up of the electric motor starting button 5 connected successively by wire, mains switch 7, relay 8 and the protection switch 6 in parallel with electric motor starting button 5; wire two ends are connected with the two-phase power supply 4.2 of three phase mains 4, and it is peripheral that the second coil 2.2 is centered around the second magnet-sensitive switch 1.2.
As Fig. 4; tertiary coil 2.3 is made up of the electric motor starting button 5 connected successively by wire, mains switch 7, relay 8 and the protection switch 6 in parallel with electric motor starting button 5; wire two ends are connected with the two-phase power supply 4.3 of three phase mains 4, and it is peripheral that tertiary coil 2.3 is centered around the 3rd magnet-sensitive switch 1.3.
Principle illustrates: after operation pressed by electric motor starting button 5; coil 2 produces magnetic field; magnet-sensitive switch 1 is driven to close; three phase mains flows through rated current in three-phase coil under normal circumstances; inner three magnet-sensitive switchs close; threephase motor 3 keeps attracting state through the interlocking of relay 4 normally opened contact; once any phase shortage of three phase mains; this phase current disappears; corresponding magnet-sensitive switch disconnects; relay electric-loss disconnects and keeps, and motor is out of service, reaches in protection phase-defect of motor situation not by the object of burning.The utility model structure is simple; unused many control elements; internal core is the magnet-sensitive switch in lattice coil; wiring and install simple and practical; only need select the protector in Power control range; be serially connected in motor power circuit, just can well protect three phase electric machine not burn because of phase shortage.
Above content is only to the utility model structure example and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the structure of utility model or surmount this scope as defined in the claims, protection range of the present utility model all should be belonged to.
Claims (4)
1. Intelligent weak current switch; comprise the three phase mains (4) be connected with threephase motor (3) through magnet-sensitive switch (1); it is characterized in that, described magnet-sensitive switch (1) periphery is wound with corresponding coil (2).
2. Intelligent weak current switch according to claim 1; it is characterized in that; described magnet-sensitive switch (1) comprises the first magnet-sensitive switch (1.1), the second magnet-sensitive switch (1.2), the 3rd magnet-sensitive switch (1.3), and described coil (2) is made up of the first coil (2.1), the second coil (2.2), tertiary coil (2.3).
3. Intelligent weak current switch according to claim 2; it is characterized in that; described first coil (2.1), the second coil (2.2), tertiary coil (3.3) include the electric motor starting button (5), mains switch (7) and the relay (8) that are connected successively by wire, and described electric motor starting button (5) is parallel with protection switch (6).
4. Intelligent weak current switch according to claim 3; it is characterized in that, described first coil (2.1), the second coil (2.2) are all connected with any two-phase power supply of three phase mains (4) with the wire two ends of tertiary coil (2.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792458.0U CN204333930U (en) | 2014-12-11 | 2014-12-11 | Intelligent weak current switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792458.0U CN204333930U (en) | 2014-12-11 | 2014-12-11 | Intelligent weak current switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204333930U true CN204333930U (en) | 2015-05-13 |
Family
ID=53170245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420792458.0U Expired - Fee Related CN204333930U (en) | 2014-12-11 | 2014-12-11 | Intelligent weak current switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204333930U (en) |
-
2014
- 2014-12-11 CN CN201420792458.0U patent/CN204333930U/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 | ||
| 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: 20150513 Termination date: 20171211 |