You can't adjust voltage across the L1 - L3, L2 - L3 legs of a RPC by observing current flow with a
clamp-on ammeter. Balance is achieved by measuring voltage across the respective legs with a
voltmeter. Suggest you go to Metal Web News, scroll down to Electric Phase Connverter Information
and do some reading on RPCs.

Bob Swinney




"DrollTroll" wrote in message ...
Awl--

What's more important when adjusting capacitor values:
Getting equal voltage between each pair of legs, or balanced current in
each leg? Seems like you can't have both.

At equalized voltage, the current through the generated leg is through the
roof.
At equalized current, if line L1-L2 is 240, then L1-L3 and L2-L3 are about
230-233, which is not so bad.

On a 10 hp idler, it takes only 50 uF per leg to equalize the current in the
legs, but much more to equalize the voltage--with the resulting excessive
current in the third leg.

I also noticed that two 5 hp idlers draw much more current than the sum of
either operating by themselves! And much more than my 10 hp idler.

Idears?

--
DT


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