CN204271615U - A kind of elevator motor phase protection circuit - Google Patents
A kind of elevator motor phase protection circuit Download PDFInfo
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- CN204271615U CN204271615U CN201420815648.XU CN201420815648U CN204271615U CN 204271615 U CN204271615 U CN 204271615U CN 201420815648 U CN201420815648 U CN 201420815648U CN 204271615 U CN204271615 U CN 204271615U
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Abstract
The utility model discloses a kind of elevator motor phase protection circuit, comprise thermal relay KR, A.C. contactor KM, multiple-pole switch Q, resistance R1, main power line L1, main power line L2, main power line L3 and fuse FR.The utility model elevator motor phase protection circuit is by reasonably using thermal relay KR, auxiliary relay KA and A.C. contactor KM; achieve the protection of phase shortage to elevator motor and anti-phase two kinds of modes; not only circuit structure is simple; good stability; fail safe is high; and be easy to install, be applicable to promoting the use of.
Description
Technical field
The utility model relates to a kind of lift circuit, specifically a kind of elevator motor phase protection circuit.
Background technology
Along with the development of modern high technology, house and building for working all develop to high level gradually.The transport facility that elevator is high-rise hotel, shop, house, multistoried storehouse contour level build indispensable vertical direction, and motor relates to one of most important link of personal safety in running as elevator, its stability is even more important.
Current elevator motor and circuit open-phase protection mainly be open phase protector; must pass from open phase protector coil owing to needing the main line of power supply when open phase protector is installed; install very inconvenient; and open phase protector identification circuit mostly is electronic original part; to voltage and operating environment requirements higher; fragile in work, stability is not high, does not reach the effect of protection.
Utility model content
The purpose of this utility model is to provide the elevator motor phase protection circuit that a kind of structure is simple, stability is high, 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 elevator motor phase protection circuit, comprise thermal relay KR, A.C. contactor KM, multiple-pole switch Q, resistance R1, main power line L1, main power line L2, main power line L3 and fuse FR, described multiple-pole switch Q, ac contactor contact KM-1, the heater element of thermal relay KR and motor M are connected to main power line L1 in turn, L2, L3, main power line L1 also connects fuse FU1 and electric capacity C1 respectively, described main power line L2 also connects auxiliary relay KA coil, described main power line L3 also distinguishes connection transformer T primary coil and resistance R4, the transformer T primary coil other end connects the fuse FU1 other end, the described electric capacity C1 other end is contact resistance R3 and the resistance R4 other end respectively, the resistance R3 other end connects the auxiliary relay KA other end, described transformer T secondary coil one end connects fuse FU2, the fuse FU2 other end is contact resistance R1 respectively, switch S B1 and A.C. contactor KM contact KM-2, the A.C. contactor KM contact KM-2 other end is the connecting valve SB1 other end and switch S B2 respectively, the switch S B2 other end connects A.C. contactor KM, the A.C. contactor KM other end connects auxiliary relay KA contact KA-1, the auxiliary relay KA contact KA-1 other end connects thermal relay KR contact KR1, thermal relay KR contact KR1 other end contact resistance R2, the resistance R2 other end is the connection transformer T secondary coil other end respectively, bulb HL1 and bulb HL2, the bulb HL1 other end connects auxiliary relay KA contact KA-2 pin 1, the described bulb HL2 other end connects auxiliary relay KA contact KA-2 pin 2, the auxiliary relay KA contact KA-2 pin 3 contact resistance R1 other end.
As the utility model further scheme: described auxiliary relay KA coil voltage is the auxiliary relay of the JZ7-44 model of 380V.
Compared with prior art; the beneficial effects of the utility model are: the utility model elevator motor phase protection circuit is by reasonably using thermal relay KR, auxiliary relay KA and A.C. contactor KM; achieve the protection of phase shortage to elevator motor and anti-phase two kinds of modes; not only circuit structure is simple; good stability; fail safe is high, and is easy to install, and is applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram of elevator motor phase protection 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 elevator motor phase protection circuit, comprise thermal relay KR, A.C. contactor KM, multiple-pole switch Q, resistance R1, main power line L1, main power line L2, main power line L3 and fuse FR, multiple-pole switch Q, ac contactor contact KM-1, the heater element of thermal relay KR and motor M are connected to main power line L1 in turn, L2, L3, main power line L1 also connects fuse FU1 and electric capacity C1 respectively, main power line L2 also connects auxiliary relay KA coil, main power line L3 also distinguishes connection transformer T primary coil and resistance R4, the transformer T primary coil other end connects the fuse FU1 other end, the electric capacity C1 other end is contact resistance R3 and the resistance R4 other end respectively, the resistance R3 other end connects the auxiliary relay KA other end, transformer T secondary coil one end connects fuse FU2, the fuse FU2 other end is contact resistance R1 respectively, switch S B1 and A.C. contactor KM contact KM-2, the A.C. contactor KM contact KM-2 other end is the connecting valve SB1 other end and switch S B2 respectively, the switch S B2 other end connects A.C. contactor KM, the A.C. contactor KM other end connects auxiliary relay KA contact KA-1, the auxiliary relay KA contact KA-1 other end connects thermal relay KR contact KR1, thermal relay KR contact KR1 other end contact resistance R2, the resistance R2 other end is the connection transformer T secondary coil other end respectively, bulb HL1 and bulb HL2, the bulb HL1 other end connects auxiliary relay KA contact KA-2 pin 1, the bulb HL2 other end connects auxiliary relay KA contact KA-2 pin 2, the auxiliary relay KA contact KA-2 pin 3 contact resistance R1 other end.
Auxiliary relay KA coil voltage is the auxiliary relay of the JZ7-44 model of 380V.
Operation principle of the present utility model is: three-phase 380V power line L1, L2, L3 powers to motor M through A.C. contactor KM and thermal relay KR, three phase supply power line L1, L2, L3 be forward phase sequence time, auxiliary relay KA action, relay K A contact KA-1 is often made war while adhesive, relay K A contact KA-2 also adhesive, HL1 is bright for phase sequence indicator light, represent that phase sequence is normal, Push switch SB1 makes A.C. contactor KM adhesive, motor M starts, if three phase supply power line L1, L2, when L3 is reverse phase sequence, auxiliary relay KA akinesia, indicator light HL2 two, represent Phase-sequence Fault, even if now by switch S B1, A.C. contactor KM akinesia, motor M cannot start, when power line L1 and power line L3 lacks disconnected phase time, transformer T primary coil dead electricity, control circuit is without 220B power supply, A.C. contactor KM does not start, when power line L2 lacks disconnected phase time, relay K A dead electricity can not adhesive, A.C. contactor KM is failure to actuate, namely circuit is lacking in disconnected phase situation and can not start.
Claims (2)
1. an elevator motor phase protection circuit, comprise thermal relay KR, A.C. contactor KM, multiple-pole switch Q, resistance R1, main power line L1, main power line L2, main power line L3 and fuse FR, it is characterized in that, described multiple-pole switch Q, ac contactor contact KM-1, the heater element of thermal relay KR and motor M are connected to main power line L1 in turn, L2, L3, main power line L1 also connects fuse FU1 and electric capacity C1 respectively, described main power line L2 also connects auxiliary relay KA coil, described main power line L3 also distinguishes connection transformer T primary coil and resistance R4, the transformer T primary coil other end connects the fuse FU1 other end, the described electric capacity C1 other end is contact resistance R3 and the resistance R4 other end respectively, the resistance R3 other end connects the auxiliary relay KA other end, described transformer T secondary coil one end connects fuse FU2, the fuse FU2 other end is contact resistance R1 respectively, switch S B1 and A.C. contactor KM contact KM-2, the A.C. contactor KM contact KM-2 other end is the connecting valve SB1 other end and switch S B2 respectively, the switch S B2 other end connects A.C. contactor KM, the A.C. contactor KM other end connects auxiliary relay KA contact KA-1, the auxiliary relay KA contact KA-1 other end connects thermal relay KR contact KR1, thermal relay KR contact KR1 other end contact resistance R2, the resistance R2 other end is the connection transformer T secondary coil other end respectively, bulb HL1 and bulb HL2, the bulb HL1 other end connects auxiliary relay KA contact KA-2 pin 1, the described bulb HL2 other end connects auxiliary relay KA contact KA-2 pin 2, the auxiliary relay KA contact KA-2 pin 3 contact resistance R1 other end.
2. elevator motor phase protection circuit according to claim 1, is characterized in that, described auxiliary relay KA coil voltage is the auxiliary relay of the JZ7-44 model of 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815648.XU CN204271615U (en) | 2014-12-19 | 2014-12-19 | A kind of elevator motor phase protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815648.XU CN204271615U (en) | 2014-12-19 | 2014-12-19 | A kind of elevator motor phase protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271615U true CN204271615U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420815648.XU Active CN204271615U (en) | 2014-12-19 | 2014-12-19 | A kind of elevator motor phase protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271615U (en) |
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2014
- 2014-12-19 CN CN201420815648.XU patent/CN204271615U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |