|
WCIN | I have went throght the same thought. Power company wanted $$55,000 to bring 3-phase 1 1/2 miles. "Bulls**t", I said. I needed and have to replace the leg motor to a three phase with a variable freq power drive. This thing is awesome, slow start and efficient. Toshiba Variable Frequency Power drive. Dial the little knob to vary the speed of the motor it is controlling.
The way I understand. I roto-phase needs to be running at full speed, before turning on three phase motors at full load. The freq drive doesn't matter.
| |
|
grain bin with single phase power
