CN204464963U - A kind of motor phase sequence protective circuit - Google Patents
A kind of motor phase sequence protective circuit Download PDFInfo
- Publication number
- CN204464963U CN204464963U CN201520232768.1U CN201520232768U CN204464963U CN 204464963 U CN204464963 U CN 204464963U CN 201520232768 U CN201520232768 U CN 201520232768U CN 204464963 U CN204464963 U CN 204464963U
- Authority
- CN
- China
- Prior art keywords
- pin
- resistance
- pole
- relay
- diode
- 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
Links
Abstract
The utility model discloses a kind of motor phase sequence protective circuit, comprise multiple-pole switch Q, A.C. contactor KM, resistance R1, relay K and diode D1.The utility model motor phase sequence protective circuit; by reasonably using relay K and A.C. contactor KM; the three-phase imbalance that the fault such as disconnected phase, overload, short circuit of motor causes is protected in all over the body; not only circuit structure is simple, good stability, and fail safe is high; and owing to not using any chip component; strong interference immunity, is easy to install, is applicable to promoting the use of.
Description
Technical field
The utility model relates to a kind of protective circuit, specifically a kind of motor phase sequence protective circuit.
Background technology
The phase sequence of motor avoids overtension, too low, phase shortage, broken thinking etc. to cause the destructive malfunction of three-phase imbalance to design; but because network operation situation is extremely complicated, interference source is more; if three-phase voltage does not reach standard value; motor can be damaged time serious; even there is other accident; existing protecting circuit designed is a lot; but ubiquity function singleness; anti-interference is poor; thorough not to the protection of motor, need the protective circuit or the device that coordinate other, cause complicated integral structure; cost increases, and stability reduces.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the motor phase sequence protective circuit of diverse in function, strong interference immunity, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of motor phase sequence protective circuit, comprise multiple-pole switch Q, A.C. contactor KM, resistance R1, relay K and diode D1, described multiple-pole switch Q pin 1, 2, 3 are connected respectively power line L1, L2, L3, multiple-pole switch Q pin 4 connects diode D1 positive pole and relay K contact K-2 pin 1 respectively, multiple-pole switch Q pin 5 connects electric capacity C1 respectively, relay K contact K-2 pin 2 and relay K coil, multiple-pole switch Q pin 6 connects fuse FU respectively, switch S B1 and relay K contact K-1 and relay K contact K-2 pin 3, relay K contact K-2 pin 4, 5, 6 all connect motor M, described diode D1 negative pole connecting luminous diode D2 positive pole, light-emitting diode D2 negative pole is contact resistance R2 and resistance R3 respectively, the resistance R3 other end connects electric capacity C2 and photoelectrical coupler U1 pin 1 respectively, the electric capacity C2 other end connects photoelectrical coupler U1 pin 2 respectively, the A pole of the resistance R2 other end and one-way SCR VS, the K pole of one-way SCR VS connects the fuse FU other end and diode D3 positive pole respectively, diode D3 negative pole connects G pole and the resistance R1 of one-way SCR VS respectively, the resistance R1 other end connects the electric capacity C1 other end, the described switch S B1 other end is the connecting valve SB2 other end and the relay K contact K-1 other end respectively, the switch S B2 other end connects A.C. contactor KM-1, the A.C. contactor KM-1 other end connects the relay K coil other end, described photoelectrical coupler U1 pin 3 is contact resistance R4 respectively, A.C. contactor KM, diode D4 negative pole, electric capacity C3 and rectifier bridge E pin 1, photoelectrical coupler U1 pin 4 contact resistance R5, resistance R5 other end connecting triode VT1 base stage, the triode VT1 collector electrode contact resistance R4 other end, triode VT1 emitter connecting triode VT2 base stage, triode VT2 collector electrode connects the A.C. contactor KM other end respectively, diode D4 positive pole and light-emitting diode D5 positive pole, triode VT2 emitter is contact resistance R6 respectively, the electric capacity C3 other end and rectifier bridge E pin 3, resistance R6 other end connecting luminous diode D5 negative pole, described rectifier bridge E pin 2 and pin 4 connection transformer T1 primary coil two ends respectively, transformer T1 secondary coil two ends are A.C. contactor KM contact KM-2 in parallel and alarm module respectively.
As further program of the utility model: described photoelectrical coupler U1 model is 4N25.
As the utility model further scheme: described alarm module is sound and light alarm module.
Compared with prior art; the beneficial effects of the utility model are: the utility model motor phase sequence protective circuit; by reasonably using relay K and A.C. contactor KM, be protected in by the three-phase imbalance that the fault such as disconnected phase, overload, short circuit of motor causes all over the body, not only circuit structure is simple; good stability; fail safe is high, and owing to not using any chip component, strong interference immunity; be easy to install, be applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram of motor phase sequence protective circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of motor phase sequence protective circuit, comprise multiple-pole switch Q, A.C. contactor KM, resistance R1, relay K and diode D1, multiple-pole switch Q pin 1, 2, 3 are connected respectively power line L1, L2, L3, multiple-pole switch Q pin 4 connects diode D1 positive pole and relay K contact K-2 pin 1 respectively, multiple-pole switch Q pin 5 connects electric capacity C1 respectively, relay K contact K-2 pin 2 and relay K coil, multiple-pole switch Q pin 6 connects fuse FU respectively, switch S B1 and relay K contact K-1 and relay K contact K-2 pin 3, relay K contact K-2 pin 4, 5, 6 all connect motor M, diode D1 negative pole connecting luminous diode D2 positive pole, light-emitting diode D2 negative pole is contact resistance R2 and resistance R3 respectively, the resistance R3 other end connects electric capacity C2 and photoelectrical coupler U1 pin 1 respectively, the electric capacity C2 other end connects photoelectrical coupler U1 pin 2 respectively, the A pole of the resistance R2 other end and one-way SCR VS, the K pole of one-way SCR VS connects the fuse FU other end and diode D3 positive pole respectively, diode D3 negative pole connects G pole and the resistance R1 of one-way SCR VS respectively, the resistance R1 other end connects the electric capacity C1 other end, the switch S B1 other end is the connecting valve SB2 other end and the relay K contact K-1 other end respectively, the switch S B2 other end connects A.C. contactor KM-1, the A.C. contactor KM-1 other end connects the relay K coil other end, photoelectrical coupler U1 pin 3 is contact resistance R4 respectively, A.C. contactor KM, diode D4 negative pole, electric capacity C3 and rectifier bridge E pin 1, photoelectrical coupler U1 pin 4 contact resistance R5, resistance R5 other end connecting triode VT1 base stage, the triode VT1 collector electrode contact resistance R4 other end, triode VT1 emitter connecting triode VT2 base stage, triode VT2 collector electrode connects the A.C. contactor KM other end respectively, diode D4 positive pole and light-emitting diode D5 positive pole, triode VT2 emitter is contact resistance R6 respectively, the electric capacity C3 other end and rectifier bridge E pin 3, resistance R6 other end connecting luminous diode D5 negative pole, rectifier bridge E pin 2 and pin 4 connection transformer T1 primary coil two ends respectively, transformer T1 secondary coil two ends are A.C. contactor KM contact KM-2 in parallel and alarm module respectively.
Photoelectrical coupler U1 model is 4N25.
Alarm module is sound and light alarm module.
Operation principle of the present utility model is: the utility model circuit is made up of testing circuit and control circuit two parts, circuit of testing the phase sequence comprises one-way SCR VS, resistance R1 and electric capacity C1, during three-phase alternating current positive phase sequence, diode D4 ends, triode VT1 and VT2 also ends, A.C. contactor KM not adhesive, light-emitting diode D5 is bright, light-emitting diode D2 does not work, three-phase is caused to occur if break down uneven, then there is diode D4 conducting, triode VT1 and VT2 conducting, A.C. contactor KM adhesive, light-emitting diode D5 is bright, light-emitting diode D2 is bright, A.C. contactor KM normally-closed contact KM-1 controls electric motor loop, A.C. contactor KM normally opened contact KM-2 module taking alarm.The utility model motor phase sequence protective circuit; by reasonably using relay K and A.C. contactor KM; the three-phase imbalance that the fault such as disconnected phase, overload, short circuit of motor causes is protected in all over the body; not only circuit structure is simple, good stability, and fail safe is high; and owing to not using any chip component; strong interference immunity, is easy to install, is applicable to promoting the use of.
Claims (3)
1. a motor phase sequence protective circuit, comprise multiple-pole switch Q, A.C. contactor KM, resistance R1, relay K and diode D1, it is characterized in that, described multiple-pole switch Q pin 1, 2, 3 are connected respectively power line L1, L2, L3, multiple-pole switch Q pin 4 connects diode D1 positive pole and relay K contact K-2 pin 1 respectively, multiple-pole switch Q pin 5 connects electric capacity C1 respectively, relay K contact K-2 pin 2 and relay K coil, multiple-pole switch Q pin 6 connects fuse FU respectively, switch S B1 and relay K contact K-1 and relay K contact K-2 pin 3, relay K contact K-2 pin 4, 5, 6 all connect motor M, described diode D1 negative pole connecting luminous diode D2 positive pole, light-emitting diode D2 negative pole is contact resistance R2 and resistance R3 respectively, the resistance R3 other end connects electric capacity C2 and photoelectrical coupler U1 pin 1 respectively, the electric capacity C2 other end connects photoelectrical coupler U1 pin 2 respectively, the A pole of the resistance R2 other end and one-way SCR VS, the K pole of one-way SCR VS connects the fuse FU other end and diode D3 positive pole respectively, diode D3 negative pole connects G pole and the resistance R1 of one-way SCR VS respectively, the resistance R1 other end connects the electric capacity C1 other end, the described switch S B1 other end is the connecting valve SB2 other end and the relay K contact K-1 other end respectively, the switch S B2 other end connects A.C. contactor KM-1, the A.C. contactor KM-1 other end connects the relay K coil other end, described photoelectrical coupler U1 pin 3 is contact resistance R4 respectively, A.C. contactor KM, diode D4 negative pole, electric capacity C3 and rectifier bridge E pin 1, photoelectrical coupler U1 pin 4 contact resistance R5, resistance R5 other end connecting triode VT1 base stage, the triode VT1 collector electrode contact resistance R4 other end, triode VT1 emitter connecting triode VT2 base stage, triode VT2 collector electrode connects the A.C. contactor KM other end respectively, diode D4 positive pole and light-emitting diode D5 positive pole, triode VT2 emitter is contact resistance R6 respectively, the electric capacity C3 other end and rectifier bridge E pin 3, resistance R6 other end connecting luminous diode D5 negative pole, described rectifier bridge E pin 2 and pin 4 connection transformer T1 primary coil two ends respectively, transformer T1 secondary coil two ends are A.C. contactor KM contact KM-2 in parallel and alarm module respectively.
2. motor phase sequence protective circuit according to claim 1, is characterized in that, described photoelectrical coupler U1 model is 4N25.
3. motor phase sequence protective circuit according to claim 1, is characterized in that, described alarm module is sound and light alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232768.1U CN204464963U (en) | 2015-04-12 | 2015-04-12 | A kind of motor phase sequence protective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232768.1U CN204464963U (en) | 2015-04-12 | 2015-04-12 | A kind of motor phase sequence protective circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204464963U true CN204464963U (en) | 2015-07-08 |
Family
ID=53671790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520232768.1U Expired - Fee Related CN204464963U (en) | 2015-04-12 | 2015-04-12 | A kind of motor phase sequence protective circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204464963U (en) |
-
2015
- 2015-04-12 CN CN201520232768.1U patent/CN204464963U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204119020U (en) | A kind of PFC protective circuit and air conditioner | |
| CN202260378U (en) | Leakage protector | |
| CN102638024B (en) | Interruption line protector | |
| CN204243716U (en) | Electric device fault secure circuit | |
| CN200987070Y (en) | Phase lacking protection circuit for Intermediate voltage frequency-changing speed regulator | |
| CN204794702U (en) | Power converter circuit | |
| CN103401215B (en) | A kind of over-and under-voltage protection circuit, protection socket and terminal | |
| CN203774767U (en) | Cut-off type fault protection circuit of unity power factor boost converter | |
| CN204464963U (en) | A kind of motor phase sequence protective circuit | |
| CN203339670U (en) | Three-phase star type motor open-phase protector | |
| CN203645584U (en) | Positive-negative rotating control circuit of three-phase AC motor | |
| CN206135388U (en) | But automatic disconnection's energy -conserving circuit | |
| CN204191002U (en) | Can the LED drive circuit of anti-2KV surge voltage | |
| CN204067750U (en) | A kind of leakage protecting plug | |
| CN205029317U (en) | Electric electrical shutoff control circuit in earth -leakage protector automation | |
| CN204464945U (en) | A kind of light fixture abnormal conditions detection system | |
| CN204391018U (en) | A kind of overvoltage/undervoltage device being applicable to the instruction of miniature circuit breaker accessory tapes voltage | |
| CN103681094B (en) | A kind of vacuum circuit breaker control circuit and system | |
| CN203631410U (en) | Vacuum circuit breaker controlling circuit and vacuum circuit breaker controlling system | |
| CN106374423A (en) | Energy-saving efficient circuit structure | |
| CN204966871U (en) | Safe socket with earthleakage protective equipment | |
| CN202067737U (en) | Failure indication circuit breaker | |
| CN201985508U (en) | Zero line break protector and connecting structure thereof | |
| CN204333889U (en) | A kind of earth leakage protective device | |
| CN205037497U (en) | Safe long -life air condition compressor control circuit |
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 |
Granted publication date: 20150708 Termination date: 20160412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |