CN219322070U - Comprehensive protection monitoring circuit for motor - Google Patents
Comprehensive protection monitoring circuit for motor Download PDFInfo
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- CN219322070U CN219322070U CN202222972314.0U CN202222972314U CN219322070U CN 219322070 U CN219322070 U CN 219322070U CN 202222972314 U CN202222972314 U CN 202222972314U CN 219322070 U CN219322070 U CN 219322070U
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- motor
- power supply
- contactor
- normally open
- protector
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- Protection Of Generators And Motors (AREA)
Abstract
The utility model discloses a comprehensive protection monitoring circuit of a motor, which comprises a start button, a stop button, a contactor, an intermediate relay and a power indicator lamp, wherein the stop button, the start button, a coil of the contactor and a normally open contact of the comprehensive motor protector are connected in series and then connected with a power supply; the main contact of the contactor is connected with a motor control circuit, and the power indicator lamp is connected with a power supply; the coil of the intermediate relay is connected with the normally open contact of the motor comprehensive protector in series and then is connected with a power supply; and the normally open auxiliary contact of the intermediate relay is connected with the operation indicator lamp of the motor comprehensive protector in series and then is connected with a power supply. When the motor comprehensive protector fails, the motor circuit can be cut off in time to protect the motor; and through observing the pilot lamp, can help the electrician to judge whether it is motor integrated protector trouble to save time, better production when overhauling the trouble.
Description
Technical field:
the utility model relates to the technical field of motors, in particular to a comprehensive protection monitoring circuit for a motor.
The background technology is as follows:
the current coal washery power distribution cabinet consists of a breaker, a contactor, a comprehensive protector, an indicator light, a current transformer and a zero sequence current transformer; during use, it is often the case that the motor cannot be started, and in order to eliminate the fault, the electrician has to check all the electrical components. Wherein, a group of normally open points KP in the motor comprehensive protector is connected with a control N line in a motor control circuit; when the power distribution cabinet transmits power, a group of normally open points KP in the motor comprehensive protector are attracted, a motor control circuit can form a loop, and the motor can normally run. However, when the total KP point of the motor integrated protector is not closed, an electrician cannot judge whether the motor integrated protector is faulty or not by naked eyes, and inconvenience is caused to the fault removal work.
The utility model comprises the following steps:
the utility model aims to provide a motor comprehensive protection monitoring circuit capable of generating motor comprehensive protector faults.
The utility model is implemented by the following technical scheme: the motor comprehensive protection monitoring circuit comprises a start button, a stop button, a contactor, an intermediate relay and a power indicator lamp, wherein the stop button, the start button, a coil of the contactor and a normally open contact of a motor comprehensive protector are connected in series and then connected with a power supply; the main contact of the contactor is connected with a motor control circuit, and the power indicator lamp is connected with a power supply; the coil of the intermediate relay is connected with the normally open contact of the motor comprehensive protector in series and then is connected with a power supply; and the normally open auxiliary contact of the intermediate relay is connected with the operation indicator lamp of the motor comprehensive protector in series and then is connected with a power supply.
Further, the normally closed auxiliary contact of the intermediate relay is connected with the fault indicator lamp of the motor comprehensive protector in series and then connected with a power supply.
Further, the first normally open auxiliary contact of the contactor is connected in parallel with the start button.
Further, the second normally open auxiliary contact of the contactor is connected with the motor running indicator lamp in series and then connected with a power supply.
The utility model has the advantages that: the contactor, the intermediate relay, the start-stop button, the power indicator lamp and the motor operation indicator lamp are arranged, so that a motor circuit can be cut off in time when the motor comprehensive protector fails, and the motor is protected; and through observing the pilot lamp, can help the electrician to judge whether it is motor integrated protector trouble to save time, better production when overhauling the trouble.
Description of the drawings:
fig. 1 is a main loop circuit diagram of the present utility model.
Fig. 2 is a circuit diagram of a control loop of the present utility model.
A start button SB2, a stop button SB1, a contactor KM, an intermediate relay KA, a motor integrated protector QM, a power indicator lamp HL1, a motor operation indicator lamp HL2, a motor integrated protector operation indicator lamp HL3 and a motor integrated protector fault indicator lamp HL4.
The specific embodiment is as follows:
in the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, only for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
As shown in fig. 1 and 2, a motor comprehensive protection monitoring circuit comprises a stop button SB1, a start button SB2, a contactor KM, an intermediate relay KA and a power indicator HL1, wherein the start button SB2, the stop button SB1, a coil of the contactor KM and a normally open contact of a motor comprehensive protector QM are connected in series and then connected with a power supply;
the main contact of the contactor KM is connected to a motor control circuit, and a power indicator lamp HL1 is connected with a power supply; the first normally open auxiliary contact KM-1 of the contactor KM is connected with the starting button SB2 in parallel, and the second normally open auxiliary contact KM-2 of the contactor KM is connected with the motor running indicator lamp HL2 in series and then is connected with a power supply.
The coil of the intermediate relay KA is connected with the normally open contact of the motor comprehensive protector QM in series and then is connected with a power supply; the normally open auxiliary contact KA-1 of the intermediate relay KA and the motor integrated protector operation indicator lamp HL3 are connected in series and then connected with a power supply. The normally closed auxiliary contact KA-2 of the intermediate relay KA and the motor comprehensive protector fault indicator lamp HL4 are connected in series and then connected with a power supply.
Working principle:
after the power distribution cabinet transmits power, the power indicator lamp HL1 is lightened, and the power failure can be eliminated when the power indicator lamp HL1 is lightened; the normally open point of the motor comprehensive protector QM is closed, the coil of the intermediate relay KA is electrified, the normally open auxiliary contact KA-1 of the intermediate relay KA is closed, and the motor comprehensive protector operation indicator lamp HL3 is lighted, so that the motor comprehensive protector QM has no fault.
Pressing a start button SB2, powering up a coil of the contactor KM, and closing a first normally open auxiliary contact KM-1 of the contactor KM to form self-locking; the second normally open auxiliary contact KM-2 of the contactor KM is closed and the motor operation indicator lamp HL2 is illuminated, which indicates that the motor integrated protector QM is operating properly and that the motor is operating electrically.
When the motor comprehensive protector QM is damaged due to faults, a normally open point of the motor comprehensive protector QM is disconnected, a coil of the contactor KM is in power failure, a second normally open auxiliary contact KM-2 of the contactor KM is disconnected, a motor operation indicator lamp HL2 is extinguished, and the motor stops running; the coil of the intermediate relay KA is powered off, the normally open auxiliary contact KA-1 of the intermediate relay KA is disconnected, and the motor comprehensive protector operation indicator lamp HL3 is extinguished; the normally closed auxiliary contact KA-2 of the intermediate relay KA is closed, and the motor comprehensive protector fault indicator lamp HL4 is lighted to prompt faults.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (5)
1. The comprehensive motor protection monitoring circuit is characterized by comprising a start button (SB 2), a stop button (SB 1), a contactor (KM), an intermediate relay (KA) and a power indicator lamp (HL 1), wherein the stop button (SB 1), the start button (SB 2), a coil of the contactor (KM) and a normally open contact of a comprehensive motor protector (QM) are connected in series and then connected with a power supply; the main contact of the contactor (KM) is connected to a motor control circuit, and a power indicator lamp (HL 1) is connected with a power supply; the coil of the intermediate relay (KA) is connected with a normally open contact of the motor integrated protector (QM) in series and then is connected with a power supply; the normally open auxiliary contact of the intermediate relay (KA) and the operation indicator lamp (HL 3) of the motor comprehensive protector are connected in series and then connected with a power supply.
2. A motor integrated protection monitoring circuit according to claim 1, characterized in that the normally closed auxiliary contact of the intermediate relay (KA) and the motor integrated protector fault indicator lamp (HL 4) are connected in series and then connected to a power supply.
3. A motor integrated protection monitoring circuit according to claim 1 or 2, characterized in that the first normally open auxiliary contact of the contactor (KM) is connected in parallel with the start button (SB 2).
4. A motor integrated protection monitoring circuit according to claim 1 or 2, characterized in that the second normally open auxiliary contact of the contactor (KM) is connected in series with the motor running light (HL 2) and then connected to the power supply.
5. A motor integrated protection monitoring circuit according to claim 3, characterized in that the second normally open auxiliary contact of the contactor (KM) is connected in series with the motor running light (HL 2) and then connected to the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222972314.0U CN219322070U (en) | 2022-11-08 | 2022-11-08 | Comprehensive protection monitoring circuit for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222972314.0U CN219322070U (en) | 2022-11-08 | 2022-11-08 | Comprehensive protection monitoring circuit for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219322070U true CN219322070U (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222972314.0U Active CN219322070U (en) | 2022-11-08 | 2022-11-08 | Comprehensive protection monitoring circuit for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219322070U (en) |
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2022
- 2022-11-08 CN CN202222972314.0U patent/CN219322070U/en active Active
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