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The specialist of small precision motors - ORIENTAL MOTOR (INDIA) > Q＆A > Standard AC Motor Question 15: We wired the induction motor according to the wiring diagram, but it does not move. When we turned the shaft by hand, it started to move in the direction we turned it. What could be the cause of this?
Standard AC Motor: We wired the induction motor according to the wiring diagram, but it
does not move. When we turned the shaft by hand, it started to move in the direction we turned it. What could be the cause of this?
does not move. When we turned the shaft by hand, it started to move in the direction we turned it. What could be the cause of this?
Question 15: We wired the induction motor according to the wiring diagram, but it does not move. When we turned the shaft by hand, it started to move in the direction we turned it. What could be the cause of this?
Answer: In order to run a single-phase induction motor, it is necessary to use a capacitor to create two-phase power supply. This two-phase is to obtain the rotating magnetic field. Therefore, if the capacitor is not properly connected, the phenomenon described occurs. Check for a cut line or contact defect in the capacitor section. The way to check is to measure the voltage across the capacitor terminals and check whether or not it is at least 1.5 times the power supply voltage. If not, the capacitor may not be working properly.
Answer: In order to run a single-phase induction motor, it is necessary to use a capacitor to create two-phase power supply. This two-phase is to obtain the rotating magnetic field. Therefore, if the capacitor is not properly connected, the phenomenon described occurs. Check for a cut line or contact defect in the capacitor section. The way to check is to measure the voltage across the capacitor terminals and check whether or not it is at least 1.5 times the power supply voltage. If not, the capacitor may not be working properly.
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