Interesting motor comparisons
Procto sez:
In NYC-supplied 3 ph, I seem to remember identical current draws on each
leg of a 3 ph motor (208 V).
The current draws of commercial 3-phase and RPC's are not ever going to be
the same. This is because a RPC is, in reality, is an electrical network
comprised of both idler and load motors. I suggest you do a bit of study on
RPC's. There are good links on Google and Metal Web News.
Bob Swinney
"Proctologically Violated©®" wrote in message
...
Awl--
Got a 10 hp Baldor up and running--someone had misread the numbering on
the wires, and thus miswired the motor--blowing fuses like crazy.
Inyway, I amprobed it, and a 5 hp Magnatek. Would you believe the 5 hp
Magnatek, no load, draws substantially more current than the Baldor???
About 20-30% more. wow....
I don't know if that's because the Mag is really piggy, the Baldor
super-efficient, or both.
The Mag, however, seems to have better bearings, as it spins quite a bit
longer w/o power.
Also noticed wide variations in the current draw of each leg (both
motors). For example, I read 3A on one leg, 9A on the other, 12 A on the
third, operating off an rpc. Is that normal?
--
Mr. P.V.'d
formerly Droll Troll
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