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On Feb 11, 5:49 pm, "Jerry" wrote:
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Can somone post a link to a description of how 3 phaze power works. My
brother is looking at buying a Felder combination woodworking machine
with 3 4kw motors in 3 phaze and while we both worked for an
electrician as kids we never worked with 3 phaze. If he buys it he's
planing on buying a converter as he can't get 3 phaze power at his
place. He worked in a shop with converter while in college but has
never had to set one up.
Thanks
Karl

Hi Karl

Try searching for Three Phase Power in Wikipedia.

Bob Swinney (of this group) can tell you how Rotary Converters work if
you want to make your own 3 phase from a single phase source.

Jerry

Will do. Didn't think of that. I asked my brother if he was going to
make a converter but he's looking at buying an electronic one.
Thanks
Karl

Hi Karl

I support your brother's decission to buy an "electronic one". I suspect
it will be a device that starts the 3 phase motor spinning then allows the
motor to run on single phase. A 3 phase motor will supply nearly full power
when running on single phase, but it will stall much more easily than when
it has 3 phase power.
If all 3 of your 4 KW motors are spinning at the same time from the same
power connection, you will have made your own 3 phase power within the
unit's wiring anyway.

Jerry