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Sac & Story county IA | Cost difference. An old 3 phase motor bigger than the load motor, some contactors from ebay or Amazon, and some capacitors. If you are qualified to hook up the 3 phase motor, you are qualified to make the converter. All it is, is a 3 phase motor running on single phase that makes enough current on 3 phase to make motor run. A 3 phase motor won't start on single phase but it will run after it gets up to speed. That is where the starting circuit is needed. You won't get 100% power but you can come close.
I do use VFDs and they are great, no doubt. | |
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Rotary phase converter vs vfd
