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Sac & Story county IA | I have built and used converters for past 20 years. I have a 20 and 25 hp fans running now. ( in the snow storm)
A rotary phase converter or the new inverters will work fine. The 20 and bigger hp inverters are too new to know how long the last but what I have been around have been good. I have had a couple that quit and I don't know why. They were ebay bargains so just get another and don't bother with repair.
Realize that 3 phase power is more complicated than single. On single phase, if one line doesn't have juice, the motor stops. On 3 phase, if you loose a phase when the motor is running, it will keep going but heat. If your thermal overloads are proper, it will probably trip out or not.
If I were to start from nothing, I would probably use a dual idler converter setup, about 2 - 30 hp motors. Then, put the balance capacitors on the load side of the contactor for each motor. | |
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grain bin with single phase power
