Hey guys, customer bought a 4 post turck hoist for his shop, it has 4 2hp motors on each post. The shop is 240 1ph. The hoist is 240 3ph. Load looks to be about 28 amps. I think these hoists are only available in 3ph. Phase converter time. So, I've used rotary phase converters in the past with pretty good luck. Used American Rotary and North American, both seem like they have a good product.
Company that sold the hoist is recommending a Phase-O-Matic static phase converter, they claim they have good luck with using their 20hp-30hp static converter. I'm skeptical. I've used SPC before, with zero luck. I'm guessing they are grossly oversizing the SPC to run 8hp worth of motors, but I don't know. I feel like if they bump this hoist on and off a bunch of times with a serious load on it, it's just going to pop the capacitors. The static costs $1300, rotary costs $2300. You guys think it's worth pushing the extra $1000 for something I know works? Or have you guys used SPC's on multiple motors that start and stop frequently had it's been fine?
Company that sold the hoist is recommending a Phase-O-Matic static phase converter, they claim they have good luck with using their 20hp-30hp static converter. I'm skeptical. I've used SPC before, with zero luck. I'm guessing they are grossly oversizing the SPC to run 8hp worth of motors, but I don't know. I feel like if they bump this hoist on and off a bunch of times with a serious load on it, it's just going to pop the capacitors. The static costs $1300, rotary costs $2300. You guys think it's worth pushing the extra $1000 for something I know works? Or have you guys used SPC's on multiple motors that start and stop frequently had it's been fine?