I've got a 5hp motor sitting in the basement.
Has both a starting cap and a run cap, a centrifugal switch
removes the starting cap from the circuit once it's running.
My supposedly "9000 Starting Watts" generator can't get it moving,
there's a quick twitch of the rotor and then the generator cuts out.
Starting currents can be up to 20 times what you might expect
from the horsepower rating, so maybe up to 5hp*746*20=74.6kw.
Correct, reactance in itself can not produce harmonics. But the
interaction of the offset between voltage and current and reflected power
can.
Again, I'm thinking linear vs non-linear.
And I don't see anything non-linear in reflected power that might
cause harmonics.
Jerry, KE7ER
On Thu, Aug 20, 2020 at 03:46 PM, David Eckhardt wrote:
Yes, many are starting capacitors that allow max current into the windings
to get the thing rotating. Pretty much a short on the grid for a short
duration.
Correct, reactance in itself can not produce harmonics. But the
interaction of the offset between voltage and current and reflected power
can.
Dave
