CN203504150U - Motor water flooding protection circuit - Google Patents
Motor water flooding protection circuit Download PDFInfo
- Publication number
- CN203504150U CN203504150U CN201320666091.3U CN201320666091U CN203504150U CN 203504150 U CN203504150 U CN 203504150U CN 201320666091 U CN201320666091 U CN 201320666091U CN 203504150 U CN203504150 U CN 203504150U
- Authority
- CN
- China
- Prior art keywords
- relay
- motor
- voltage input
- phase voltage
- transformer
- 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
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Abstract
The utility model discloses a motor water flooding protection circuit comprising a buzzer, a first relay, a second relay and a transformer; a pin A is arranged by a housing of the motor and connected with a first end of a primary winding of the transformer; a second end of the primary winding of the transformer is respectively connected with a first end of the first relay and a first end of the buzzer; a second end of the first relay is respectively connected with a second end of the buzzer and the housing of the motor; three power accessing ends of the motor are respectively and correspondingly connected with a U phase voltage input end, a V phase voltage input end and a W phase voltage input end; a second contact switch of the second relay is arranged between the three power accessing ends of the motor and the three-phase voltage input ends. The motor water flooding protection circuit is simple in structure, high in work stability, and has popularization usage values.
Description
Technical field
The utility model relates to a kind of protective circuit, relates in particular to a kind of protective circuit for motor entering water.
Background technology
Trade effluent is processed need to use suction pump, and the problem of water inlet appears in the motor of suction pump sometimes, after motor entering water, if continue energising work, can cause larger damage to motor again, therefore needs a kind of protective circuit to protect motor.
Utility model content
The purpose of this utility model provides a kind of protective circuit for motor entering water with regard to being in order to address the above problem.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of protective circuit for motor entering water, comprise buzzer, the first relay, the second relay and transformer, probe A is arranged on by the casing of motor, probe is connected with the first end of a winding of described transformer, the second end of a winding of described transformer is connected with the first end of described the first relay and the first end of described buzzer respectively, the second end of described the first relay is connected with the second end of described buzzer and the shell of motor respectively, three power access ends of motor respectively with U phase voltage input, V phase voltage input is connected with W phase voltage input is corresponding, between three power access ends of motor and three-phase voltage input, be provided with the second contact switch of the second relay, the first end of the secondary winding of described transformer connecting to neutral line again after being connected with the first end of the second relay respectively, the second end of described the second relay is connected with the first end of the contact switch of the first relay, the second end of the contact switch of the first relay is connected with the first end of the first contact switch of the second relay, the second end of the first contact switch of the second relay is connected with W phase voltage input with the second end of the secondary winding of transformer respectively.
The beneficial effects of the utility model are:
A kind of protective circuit for motor entering water of the utility model, this circuit simple in structure, job stability is high, has the value of promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of protective circuit for motor entering water of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of protective circuit for motor entering water of the utility model, comprise buzzer HA, the first relay K, the second relay K M and transformer T, probe A is arranged on by the casing of motor M, probe is connected with the first end of a winding of transformer T, the second end of a winding of transformer T is connected with the first end of buzzer HA with the first end of the first relay K respectively, the second end of the first relay K is connected with the second end of buzzer HA and the shell of motor M respectively, three power access ends of motor M respectively with U phase voltage input, V phase voltage input is connected with W phase voltage input is corresponding, between three power access ends of motor M and three-phase voltage input, be provided with the second contact switch KM-2 of the second relay, the first end of the secondary winding of transformer T connecting to neutral line again after being connected with the first end of the second relay K M respectively, the second end of the second relay K M is connected with the first end of the contact switch K-1 of the first relay, the second end of the contact switch K-1 of the first relay is connected with the first end of the first contact switch KM-1 of the second relay, the second end of the first contact switch KM-1 of the second relay is connected with W phase voltage input with the second end of the secondary winding of transformer T respectively.
Claims (1)
1. the protective circuit for motor entering water, it is characterized in that: comprise buzzer, the first relay, the second relay and transformer, probe A is arranged on by the casing of motor, probe is connected with the first end of a winding of described transformer, the second end of a winding of described transformer is connected with the first end of described the first relay and the first end of described buzzer respectively, the second end of described the first relay is connected with the second end of described buzzer and the shell of motor respectively, three power access ends of motor respectively with U phase voltage input, V phase voltage input is connected with W phase voltage input is corresponding, between three power access ends of motor and three-phase voltage input, be provided with the second contact switch of the second relay, the first end of the secondary winding of described transformer connecting to neutral line again after being connected with the first end of the second relay respectively, the second end of described the second relay is connected with the first end of the contact switch of the first relay, the second end of the contact switch of the first relay is connected with the first end of the first contact switch of the second relay, the second end of the first contact switch of the second relay is connected with W phase voltage input with the second end of the secondary winding of transformer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666091.3U CN203504150U (en) | 2013-10-28 | 2013-10-28 | Motor water flooding protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666091.3U CN203504150U (en) | 2013-10-28 | 2013-10-28 | Motor water flooding protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504150U true CN203504150U (en) | 2014-03-26 |
Family
ID=50335095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320666091.3U Expired - Fee Related CN203504150U (en) | 2013-10-28 | 2013-10-28 | Motor water flooding protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504150U (en) |
-
2013
- 2013-10-28 CN CN201320666091.3U patent/CN203504150U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141028 |
|
| EXPY | Termination of patent right or utility model |