I found a (very) surplus 3-phase motor today. I got a real good deal on
it because the nameplate the seller and I read the data off said it was
a 50Hz 5hp 2850 rpm motor, and he didn't believe me when I told him it
would run fine on 60Hz power. Loading it in my car, I noticed *another*
nameplate. I have never seen 2 nameplates on an electric motor before!
This one said 60Hz 7.5hp 3450 rpm! The motor is a Baldor, has that ISR
sticker on it (inverter surge rated), and has a spec number which doesn't
work on the Baldor site: 36H928-0194G1.
I want this motor for an idler for a phase converter. The largest load
motor it has to start is 3hp. This motor is pretty small physically for
a 7.5hp motor. It has a 182TZ frame. No shorts to the case. All nine
wires were disconnected so I didn't check all 72 lead-leads because the
price was so right. I'll spin it up and see, if it sparks it will be an
"oh well". I was looking for a 5hp 3ph motor for use as an idler. I seem
to have found a 7.5hp of sorts, a kind of wimpy one. I don't care as long
as it will work. But I don't want to spend a lot of effort if this motor
has something inherently non-idler about it.
17 years ago