Motor control cabinet for oil extracting machine
The utility model discloses a motor control cabinet for an oil extracting machine, which comprises a main loop and a control loop. The main loop adopts a star-shaped and triangular structure; the control circuit is characterized in that a fuse, a stopping button, a starting button and a relay are or...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The utility model discloses a motor control cabinet for an oil extracting machine, which comprises a main loop and a control loop. The main loop adopts a star-shaped and triangular structure; the control circuit is characterized in that a fuse, a stopping button, a starting button and a relay are orderly connected between two line voltage. A normally open contact of the relay can control a control level loop in the main loop; when the control level loop works or not in the processes of zero load and load of the oil extracting machine, the motor can be in a star connection or in a delta connection; so the utility model can effective save energy; in addition, controlled silicon can not occur the phenomenon of drawing arcs and sparks. |
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