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clare at snyder.on.ca clare at snyder.on.ca is offline
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Default RPM of variable speed DC Motors

On Sat, 29 Sep 2007 21:09:57 -0500, Louis Ohland
wrote:

After some web surfing, with HP being the same on a permanent magnet
DC motor, is a lower RPM for the given HP better than a higher RPM for
the same HP?

Motor A: 1HP, 90V, 2500 RPM, 10.7A 4.28A per 1,000 RPM
Motor B: 1HP, 90V, 1750 RPM, 9.2A 5.26A per 1,000 RPM

Since I'm a recovering college graduate, does this mean more kick per
RPM by the lower speed drive?


Definitely means more torque. Less reduction required if you need less
than 2500 (0r 1750) RPM.
More torque means mor amops, and vise versa.

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