CN206004297U - A kind of Three-phase electric motor phase protection system - Google Patents
A kind of Three-phase electric motor phase protection system Download PDFInfo
- Publication number
- CN206004297U CN206004297U CN201521096410.7U CN201521096410U CN206004297U CN 206004297 U CN206004297 U CN 206004297U CN 201521096410 U CN201521096410 U CN 201521096410U CN 206004297 U CN206004297 U CN 206004297U
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- China
- Prior art keywords
- phase
- solenoid
- phase electric
- contactor
- electric machine
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Abstract
A kind of Three-phase electric motor phase protection system it is characterised in that：Described Three-phase electric motor phase protection system, including A.C. contactor, AC intermediate relay and three phase electric machine；Solenoid passes through rated voltage adhesive, power-off separates, in the different three-phase of main circuit that the solenoid of A.C. contactor and the solenoid of AC intermediate relay are linked into three phase electric machine.Described auxiliary reclay solenoid is connected in different three-phase circuits, and the rated voltage of wherein at least one solenoid is 380V.Advantage of the present utility model：Three-phase electric motor phase protection system described in the utility model; it is easily installed; reliable and stable; energy saving; it is applied in the case of not having open phase protector; it is combined into ball bearing made using conventional three phase electric machine control apparatus element, realizes carrying out open-phase protection to three phase electric machine, to prevent in three phase electric machine operation because phase shortage is burned out.
Description
Technical field
This utility model is related to protection of circuit field, particularly to a kind of Three-phase electric motor phase protection system.
Background technology
Three phase electric machine uses at large in all types of industries produces, and it takes place frequently most and fault the most fatal is exactly phase shortage fortune
OK, once phase-deficient operation three phase electric machine, higher line current can be produced under a load and so that three phase electric machine coil heating is burnt, and
Open phase protector is used for three phase electric machine as open-phase protection, but because open phase protector is electronic product, to installing and using
Environment has a lot of requirements, much needs place to be mounted can not install and use.Therefore, how there is no the situation of open phase protector
Under, open-phase protection is carried out to three phase electric machine, compels, with regard to becoming, the problem of solution that is essential.
Utility model content
The purpose of this utility model is reliable and stable, the energy saving in order to realize being easily installed, and spy provides a kind of three-phase
Motor phase failure protection system.
This utility model provide a kind of Three-phase electric motor phase protection system it is characterised in that：Described three phase electric machine lacks
Phase protection system, including control module, A.C. contactor, AC intermediate relay and three phase electric machine；
Control module is connected with A.C. contactor and AC intermediate relay respectively, and solenoid is inhaled by rated voltage
Conjunction, power-off separation, the solenoid of A.C. contactor and the solenoid of AC intermediate relay are linked into the master of three phase electric machine
In the different three-phase of circuit.
Described auxiliary reclay solenoid is connected in different three-phase circuits, wherein at least one solenoid
Rated voltage is 380V.
The coil rating voltage of A.C. contactor and AC intermediate relay is all 220V, using an A.C. contactor and
Two AC intermediate relays.
Described described control module, A.C. contactor and AC intermediate relay, are arranged on watertight transparent and divide up and down
In the housing of body.
The solenoid rated voltage of A.C. contactor and AC intermediate relay is all 380V：When A phase phase shortage, middle
It is alternate that relay KA solenoid is connected to A, B phase line, and AC intermediate relay KA solenoid can not be energized adhesive, is connected to exchange
The AC intermediate relay KA auxiliary contact of catalyst KM electromagnetic coil circuit can not close and lead to A.C. contactor KM electromagnetic wire
Circle can not be energized adhesive, so that A.C. contactor KM main contact can not be closed to three phase electric machine transmission operation.When B phase phase shortage, with
In A phase phase shortage.When C phase phase shortage although the energising adhesive of AC intermediate relay KA solenoid, it is connected to A.C. contactor KM electromagnetism
The AC intermediate relay auxiliary contact KA of coil circuit can close, but because A.C. contactor electromagnetic coil circuit is connected to B, C
Phase, C phase phase shortage can not make A.C. contactor KM solenoid still can not be energized adhesive by electric current, and A.C. contactor KM master touches
Head can not close to three phase electric machine transmission operation.
Ultimate principle is to pass through rated voltage adhesive, power-off using A.C. contactor and AC intermediate relay solenoid
Detached characteristic, the main circuit A.C. contactor solenoid of three phase electric machine and AC intermediate relay solenoid are linked into
In the different three-phase of main circuit, arbitrary phase phase shortage makes the A.C. contactor being connected in this phase or AC intermediate relay electromagnetic wire
Circle can not be energized adhesive, so that control circuit power-off, main circuit can not close a floodgate, and makes three phase electric machine be unable to phase-deficient operation.
Advantage of the present utility model：
Three-phase electric motor phase protection system described in the utility model, is easily installed, reliable and stable, energy saving, is suitable for
In in the case of not having open phase protector, it is combined into ball bearing made using conventional three phase electric machine control apparatus element, it is right to realize
Three phase electric machine carries out open-phase protection, to prevent in three phase electric machine operation because phase shortage is burned out.
Brief description
Below in conjunction with the accompanying drawings and embodiment is described in further detail to this utility model：
Fig. 1 is Three-phase electric motor phase protection system structural representation；
Fig. 2 is housing interior structure；
Wherein：1 is A.C. contactor, and 2 is control module, and 3 is AC intermediate relay；
A, B, C are three-phase alternating current, and 0 is zero line.
Specific embodiment
Embodiment 1
Present embodiments provide a kind of Three-phase electric motor phase protection system it is characterised in that：Described Three-phase electric motor phase
Protection system, including control module, A.C. contactor, AC intermediate relay and three phase electric machine；
Control module is connected with A.C. contactor and AC intermediate relay respectively, and solenoid is inhaled by rated voltage
Conjunction, power-off separation, the solenoid of A.C. contactor and the solenoid of AC intermediate relay are linked into the master of three phase electric machine
In the different three-phase of circuit.
Described auxiliary reclay solenoid is connected in different three-phase circuits, wherein at least one solenoid
Rated voltage is 380V.
The coil rating voltage of A.C. contactor and AC intermediate relay is all 220V, using an A.C. contactor and
Two AC intermediate relays.
Described described control module, A.C. contactor and AC intermediate relay, are arranged on watertight transparent and divide up and down
In the housing of body.
The solenoid rated voltage of A.C. contactor and AC intermediate relay is all 380V.When A phase phase shortage, middle
It is alternate that relay KA solenoid is connected to A, B phase line, and AC intermediate relay KA solenoid can not be energized adhesive, is connected to exchange
The AC intermediate relay KA auxiliary contact of catalyst KM electromagnetic coil circuit can not close and lead to A.C. contactor KM electromagnetic wire
Circle can not be energized adhesive, so that A.C. contactor KM main contact can not be closed to three phase electric machine transmission operation.When B phase phase shortage, with
In A phase phase shortage.When C phase phase shortage although the energising adhesive of AC intermediate relay KA solenoid, it is connected to A.C. contactor KM electromagnetism
The AC intermediate relay auxiliary contact KA of coil circuit can close, but because A.C. contactor electromagnetic coil circuit is connected to B, C
Phase, C phase phase shortage can not make A.C. contactor KM solenoid still can not be energized adhesive by electric current, and A.C. contactor KM master touches
Head can not close to three phase electric machine transmission operation.
Ultimate principle is to pass through rated voltage adhesive, power-off using A.C. contactor and AC intermediate relay solenoid
Detached characteristic, the main circuit A.C. contactor solenoid of three phase electric machine and AC intermediate relay solenoid are linked into
In the different three-phase of main circuit, arbitrary phase phase shortage makes the A.C. contactor being connected in this phase or AC intermediate relay electromagnetic wire
Circle can not be energized adhesive, so that control circuit power-off, main circuit can not close a floodgate, and makes three phase electric machine be unable to phase-deficient operation.
Claims (3)
1. a kind of Three-phase electric motor phase protection system it is characterised in that：Described Three-phase electric motor phase protection system, including control
Module, A.C. contactor, AC intermediate relay and three phase electric machine；
Control module is connected with A.C. contactor and AC intermediate relay respectively, and solenoid passes through rated voltage adhesive, breaks
Electrically separated, the solenoid of A.C. contactor and the solenoid of AC intermediate relay are linked into the main circuit of three phase electric machine
In different three-phases.
2. according to the Three-phase electric motor phase protection system described in claim 1 it is characterised in that：Described auxiliary reclay electromagnetism
Coil is connected in different three-phase circuits, and the rated voltage of wherein at least one solenoid is 380V.
3. according to the Three-phase electric motor phase protection system described in claim 1 it is characterised in that：Described control module, exchange
Catalyst and AC intermediate relay, are arranged in the housing of watertight transparent two-piece unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096410.7U CN206004297U (en) | 2015-12-24 | 2015-12-24 | A kind of Three-phase electric motor phase protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096410.7U CN206004297U (en) | 2015-12-24 | 2015-12-24 | A kind of Three-phase electric motor phase protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206004297U true CN206004297U (en) | 2017-03-08 |
Family
ID=58203817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521096410.7U Expired - Fee Related CN206004297U (en) | 2015-12-24 | 2015-12-24 | A kind of Three-phase electric motor phase protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206004297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562414A (en) * | 2017-12-29 | 2018-09-21 | 天津瑞能电气有限公司 | The wind-power tower detection method and device of rotating excitation field are generated based on frequency converter |
-
2015
- 2015-12-24 CN CN201521096410.7U patent/CN206004297U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562414A (en) * | 2017-12-29 | 2018-09-21 | 天津瑞能电气有限公司 | The wind-power tower detection method and device of rotating excitation field are generated based on frequency converter |
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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: 20170308 Termination date: 20171224 |