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Old 09-14-2015, 04:12 PM   #1995 (permalink)
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Originally Posted by MPaulHolmes View Post
usually DC motors are rated for quite a bit slower operation than 9000Hz. It's still coupled to the AC, right? Is there a chance it could throw a copper rod on the rotor while spinning it up past 5000RPM? The RPM graphs for netgain only show data up to 5000RPM.
Hmm. Good thought. I should check. I think I have a manual around here ... the redline was in the 5500 range but I'm sure I have something about Netgain testing the motor balance into the 8000 or 9000 range.

The AC motor is only rated for 9700 rpm.

If I can't locate anything that states 'the DC motor will do 9000 rpm' then I will decouple it before the next test.
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