CN201365218Y - Phase-sequence controller for three-phase alternating current motor - Google Patents
Phase-sequence controller for three-phase alternating current motor Download PDFInfo
- Publication number
- CN201365218Y CN201365218Y CNU2009200367693U CN200920036769U CN201365218Y CN 201365218 Y CN201365218 Y CN 201365218Y CN U2009200367693 U CNU2009200367693 U CN U2009200367693U CN 200920036769 U CN200920036769 U CN 200920036769U CN 201365218 Y CN201365218 Y CN 201365218Y
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- phase
- sequence
- contactor
- alternating current
- current motor
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a phase-sequence controller for a three-phase alternating current motor, which belongs to the field of phase-sequence control of electric motors. The structure thereof comprises a three-phase automatic air circuit breaker, a three-phase phase-sequence detection relay, a contactor 1, a contactor 2 and a thermorelay, wherein the input terminal of the three-phase automatic air circuit breaker is connected with a power supply, and the output terminal thereof is respectively connected with the input terminals of the three-phase phase-sequence detection relay and the contactors 1 and 2; the output terminals of the contactors 1 and 2 are connected with the input terminals of the thermorelay; and the output terminal of the thermorelay is connected with the three-phase input terminal of the three-phase alternating current motor. In the phase-sequence controller, the three-phase output terminals of the contactors 1 and 2 adopt cross connection, so that the steering of the alternating current motor can not be affected by the power supply phase sequence to change.
Description
Technical field
The utility model relates to a kind of electric machine controller, relates in particular to a kind of three phase alternating current motor phase sequence controller, belongs to motor phase sequence control field.
Background technology
Turning to by the three phase supply power phase during three phase alternating current motor operation decides.In the three phase electric machine of the overwhelming majority is used, just when equipment debugging, the three-phase phase-sequence of motor power inlet wire adjusted to and satisfy the state that equipment operation requires, and equipment is after normal operation, if the power supply phase sequence changes, then can not discern the variation of phase sequence and the power supply phase sequence of automatic change equipment usually automatically, so that can not guarantee that equipment turns round by turning to of technological requirement.
How to discern three-phase power supply phase sequence although the relevant technologies paper has been described, how with the phase sequence change application that determines in physical device, three phase alternating current motor is turned to not influenced by the power supply phase sequence, do not find relevant programme at present as yet.
Summary of the invention
The utility model turns to the problem that influenced by the power supply phase sequence to propose a kind of three phase alternating current motor phase sequence controller for solving three phase alternating current motor.
A kind of three phase alternating current motor phase sequence controller, its structure comprises: three-phase automatic air circuit breaker, three-phase phase-sequence detect relay, contactor 1, contactor 2 and thermal relay, wherein: three-phase automatic air circuit breaker input termination power, three-phase automatic air circuit breaker output connects three-phase phase-sequence respectively and detects relay, the input of contactor 1 and the input of contactor 2, the output of the output of contactor 1 and contactor 2 all connects the input of thermal relay, the three-phase input end of the output termination three phase alternating current motor of thermal relay.
The utility model inserts in the three-phase input circuit, and no matter how input three-phase phase-sequence changes, and can guarantee that the phase line phase sequence of exporting is constant, thereby guarantees that alternating current machine rotates towards a direction.
Description of drawings
Fig. 1 is a utilization structural representation of the present utility model.
Fig. 2 is an enforcement control circuit schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of three phase alternating current motor phase sequence controller, its structure comprises: the three-phase automatic air circuit breaker, three-phase phase-sequence detects relay, contactor 1, contactor 2 and thermal relay, wherein: three-phase automatic air circuit breaker input termination power, three-phase automatic air circuit breaker output connects three-phase phase-sequence respectively and detects relay, the three-phase input end of the three-phase input end of contactor 1 and contactor 2, the three-phase output end of the three-phase output end of contactor 1 and contactor 2 all connects the three-phase input end of thermal relay, and the three-phase output end of thermal relay connects the three-phase input end of three phase alternating current motor.
As shown in Figure 2, control circuit schematic diagram of the present utility model, be made up of major loop and control loop, A, B, C are input three-phase phase-sequence in the major loop, and N is a zero line, U, V, W are the output three-phase phase-sequence, QF is the three-phase air circuit, and KX is that three-phase phase-sequence detects relay, and KMU is a contactor 1, KMD is a contactor 2, and KH is a thermal relay; SB1, SB2 are button in the control loop, and HLG, HLY and HLR are indicator light, and FU is a fuse, KMU ', KMD ' are the auxiliary contact of contactor 1 and contactor 2, KMU ", KMD " is a contactor coil, and KX ' is that three-phase phase-sequence detects relay contact, and KH ' is the thermal relay contact.As input phase sequence A, when B, C are positive sequence, three-phase phase-sequence detects relay K X and is failure to actuate, and its auxiliary contact KX ' just connects the control loop of contactor 1KMU, when pressing start button SB2, adhesive be contactor 1KMU; If input phase sequence A, when B, C are backward, then three-phase phase-sequence detects the relay K X operation, and its auxiliary contact KX ' just connects the control loop of contactor 2KMD, when pressing start button SB2, adhesive be contactor 2KMD.And the three-phase output end place of contactor 1KMU and contactor 2KMD is cross-coupled, thus just the same when power phase that for three phase alternating current motor, obtains this moment and positive sequence, so turning to, it does not change.
Claims (1)
1, a kind of three phase alternating current motor phase sequence controller, it is characterized in that: comprise the three-phase automatic air circuit breaker, three-phase phase-sequence detects relay, contactor (1), contactor (2) and thermal relay, wherein: three-phase automatic air circuit breaker input termination power, three-phase automatic air circuit breaker output connects three-phase phase-sequence respectively and detects relay, the input of the input of contactor (1) and contactor (2), the output of the output of contactor (1) and contactor (2) all connects the input of thermal relay, the three-phase input end of the output termination three phase alternating current motor of thermal relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200367693U CN201365218Y (en) | 2009-02-25 | 2009-02-25 | Phase-sequence controller for three-phase alternating current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200367693U CN201365218Y (en) | 2009-02-25 | 2009-02-25 | Phase-sequence controller for three-phase alternating current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201365218Y true CN201365218Y (en) | 2009-12-16 |
Family
ID=41475887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200367693U Expired - Fee Related CN201365218Y (en) | 2009-02-25 | 2009-02-25 | Phase-sequence controller for three-phase alternating current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201365218Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052338A (en) * | 2013-03-15 | 2014-09-17 | 洛克威尔自动控制技术股份有限公司 | Two-step connection of electric motors by means of electromagnetic switches |
-
2009
- 2009-02-25 CN CNU2009200367693U patent/CN201365218Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052338A (en) * | 2013-03-15 | 2014-09-17 | 洛克威尔自动控制技术股份有限公司 | Two-step connection of electric motors by means of electromagnetic switches |
| US9590536B2 (en) | 2013-03-15 | 2017-03-07 | Rockwell Automation Technolgies, Inc. | Two-step connection of electric motors by means of electromagnetic switches |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20130225 |