TOPIC: So Cal Workshop Power Supplies

So Cal Workshop Power Supplies 7 months 3 weeks ago #140

  • CharlieBob
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Hi all,

Does anyone have experience with 3-phase power supply to their home workshop? Do people in So Cal typically use a phase converter or get SCE to install 3-ph from the transformer?

Thanks,

CB
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So Cal Workshop Power Supplies 7 months 3 weeks ago #141

  • Graham
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Hi CB

I have several 3 phase machines in my shop, my mill, lathe and surface grinder. I used to have a rotary converter which is just a single phase motor driving a 3 phase generator but found that very noisy and so I got rid of it. I now use VFD's on each of my 3 phase machines.

The VFD converts the single phase 220v input to 3 phase output. along with variable frequency. One advantage of using a VFD is that you get variable speed control. That saves having to continually adjust the lathe belts or mill head gearing. For my surface grinder I use a VFD to give me a long slow ramp up to speed over 10 seconds. Its all programmable. Best practice on a surface grinder to re-dress the wheel after each start in case the wheel shifts on the hub during startup. With the VFD I avoid having to do that.

Graham
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So Cal Workshop Power Supplies 7 months 3 weeks ago #142

  • ken rector
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I bought an inexpensive light duty vid to use on my surface grinder. It works just fine and was easy to hook up so I can use the original start-stop switches.
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