CN204835500U - Three phase motor lacks looks circuit breaker - Google Patents
Three phase motor lacks looks circuit breaker Download PDFInfo
- Publication number
- CN204835500U CN204835500U CN201520577596.1U CN201520577596U CN204835500U CN 204835500 U CN204835500 U CN 204835500U CN 201520577596 U CN201520577596 U CN 201520577596U CN 204835500 U CN204835500 U CN 204835500U
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- China
- Prior art keywords
- phase
- power module
- tongue tube
- motor
- contactor
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Abstract
The utility model discloses a three phase motor lacks looks circuit breaker, it relates to the motor control technology field, and it contains tongue tube, rigid line circle, ac contactor, silicon controlled rectifier, manual push button, power module, protection resistance, the tongue tube is established ties in the rigid line circle of arranging three -phase primary loop respectively in, the output of a termination power module, and the other end connects the thyristor control utmost point through protection resistance, and ac contactor's main contact meets three -phase primary loop, normally opens subsidiary contact control power module's input, and open type manual push button is parallelly connected with the silicon controlled rectifier, the utility model discloses can effectively stop motor work fast under the scarce condition about moving mutually of motor, the reliability is high, and simple structure, and the cost is low.
Description
Technical field
The utility model relates to a kind of three-phase motor open-phase circuit breaker, belongs to motor control technology field.
Background technology
Occur phase shortage in three phase electric machine work, its rotor can remain in operation, but operating current can increase a lot; motor winding is burnt out in overlond running; maintenance cost after motor burns out is very high, and the motor performance of maintenance has decline greatly, therefore implements open-phase protection measure to three phase electric machine necessary.Although existing various open-phase protection technology is very ripe, still there is blind spot in reliability aspect, and control circuit is also relatively complicated.
Utility model content
For the problems referred to above, the technical problems to be solved in the utility model is to provide a kind of without blind spot and simply constructed three-phase motor open-phase circuit breaker.
A kind of three-phase motor open-phase circuit breaker of the present utility model, it comprises tongue tube, rigid line circle, A.C. contactor, controllable silicon, hand push button, power module, protective resistance; Tongue tube series connection is placed in the rigid line circle of three-phase primary circuit respectively; the output of one termination power module; the other end connects SCR control pole by protective resistance; the main contact of A.C. contactor connects three-phase primary circuit; often open the input that auxiliary contact controls power module, open type hand push button is in parallel with controllable silicon.
As preferably, described tongue tube is open type tongue tube.
As preferably, described rigid line circle is that the manual coiling of the hard wire in primary circuit forms.
The beneficial effects of the utility model are: effectively can stop machine operation fast when motor phase failure runs, reliability is high, and structure is simple, and cost is low.
Accompanying drawing explanation
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is structural representation of the present utility model.
In figure: (11; 12; 13)-open type tongue tube, (21; 22,23)-rigid line circle, 30-A.C. contactor magnet exciting coil, (31; 32; 33)-AC contactor main contact, the auxiliary contact of 34-A.C. contactor, 4-controllable silicon, 5-hand push button, 6-power module, 7-protective resistance, 8-three phase electric machine, (91,92,93)-three phase mains incoming end.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by the specific embodiment shown in accompanying drawing, the utility model is described.But should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
As shown in Figure 1, this embodiment is by the following technical solutions: it comprises tongue tube (11,12,13), rigid line circle (21,22,23), A.C. contactor (30,31,32,33,34), controllable silicon 4, hand push button 5, power module 6, protective resistance 7; Tongue tube (11; 12,13) series connection is placed in the rigid line circle (21,22 of three-phase primary circuit respectively; 23) in; the output of one termination power module 6, the other end connects controllable silicon 4 by protective resistance 7 and controls pole, the main contact (31 of A.C. contactor 30; 32; 33) connect three-phase primary circuit, often open the input that auxiliary contact 34 controls power module 6, open type hand push button 5 is in parallel with controllable silicon 4.
Further, described tongue tube (11,12,13) is open type tongue tube.
Further, described rigid line circle (21,22,23) forms for the manual coiling of the hard wire in primary circuit.
The operation principle of this embodiment is: 91,92,93 three-phases arbitrary without electricity then corresponding tongue tube do not close, controllable silicon 4 controls pole no current, and system can not enter operating state, and motor 8 can not start; In work, in 91,92,93 three-phases, arbitrary phase factor phase shortage loses electric current, corresponding tongue tube disconnects, and controllable silicon 4 controls electrode current and interrupts, and A.C. contactor 30 loses electric current, AC contactor touch head (31,32,33,34) disconnect, motor 8 quits work, simultaneously power module 6 power supply disconnects, and control system is closed, and motor 8 is non-manual can not rearming; In work, 91 phase dead electricity then control current interruptions, and motor 8 quits work, and 93 phase dead electricity are A.C. contactor 30 current interruptions then, and motor 8 quits work.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a three-phase motor open-phase circuit breaker, it is characterized in that: it comprises tongue tube (11,12,13), rigid line circle (21,22,23), A.C. contactor (30,31,32,33,34), controllable silicon (4), hand push button (5), power module (6), protective resistance (7); Tongue tube (11; 12,13) series connection is placed in the rigid line circle (21,22 of three-phase primary circuit respectively; 23) in; the output of one termination power module (6), the other end connects controllable silicon (4) by protective resistance (7) and controls pole, the main contact (31 of A.C. contactor (30); 32; 33) connect three-phase primary circuit, often open the input that auxiliary contact (34) controls power module (6), open type hand push button (5) is in parallel with controllable silicon (4).
2. a kind of three-phase motor open-phase circuit breaker according to claim 1, is characterized in that: described tongue tube (11,12,13) is open type tongue tube.
3. a kind of three-phase motor open-phase circuit breaker according to claim 1, is characterized in that: described rigid line circle (21,22,23) forms for the manual coiling of the hard wire in primary circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520577596.1U CN204835500U (en) | 2015-08-04 | 2015-08-04 | Three phase motor lacks looks circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520577596.1U CN204835500U (en) | 2015-08-04 | 2015-08-04 | Three phase motor lacks looks circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204835500U true CN204835500U (en) | 2015-12-02 |
Family
ID=54693059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520577596.1U Expired - Fee Related CN204835500U (en) | 2015-08-04 | 2015-08-04 | Three phase motor lacks looks circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204835500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979802A (en) * | 2015-08-04 | 2015-10-14 | 湖南城市学院 | Phase-lack circuit breaker for three-phase motor |
-
2015
- 2015-08-04 CN CN201520577596.1U patent/CN204835500U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979802A (en) * | 2015-08-04 | 2015-10-14 | 湖南城市学院 | Phase-lack circuit breaker for three-phase motor |
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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: 20151202 Termination date: 20170804 |