Grizzly Phase Converter question

[Ben Darrah]

Hello All,

I just bought an older (Made in 85) Unisaw with 5HP 3PH motor at an auction for a good price. Has anyone used the Grizzly G5843 3-7hp static phase converter? Would this be a good match for the saw? I'm assuming a TS requires a low start up load, relatively speaking. Are there any other good or better value priced option out there?

Thanks in advance

[Scott T Smith]

Ben, there are lots of threads here about phase converters, so a search of the archives will be very informative.

Static phase converters typically won't let your saw develop full power. You're better off with a Phase Perfect, rotary phase converter of a variable frequency drive.

Best of success to you.

Scott

[Bobby Robbinett]

Hello All,

I just bought an older (Made in 85) Unisaw with 5HP 3PH motor at an auction for a good price. Has anyone used the Grizzly G5843 3-7hp static phase converter? Would this be a good match for the saw? I'm assuming a TS requires a low start up load, relatively speaking. Are there any other good or better value priced option out there?

Thanks in advance

I have been using that same static phase converter on my Unisaw for years. It works great and I have never noticed the drop in power. While it is true that you loose a 1/3 of your horse power with a static phase converter, on a 5HP saw you will still be good to go unless you are doing a whole lot of heavy ripping on like 4” thick tropical hardwoods LoL.

[Ben Darrah]

Thanks, did some other research and ordered it.

[Matt Day]

At $300 for the SPC, I’d buy a VFD. You can run a nice TECO 3hp $200 VFD and have the same HP, and have some nice controls for blade brake and acceleration.

[Rollie Meyers]

All a static converter does is start a 3Ø motor, then it is being single phased+, not a good thing. RPC, or a VFD, are better choices.