Not sufficient information to make any qualified comments.

You need to supply inlet and outlet conditions, pipe work configuration, relative levels of source and discharge point, pump curve etc flow rate, pressures on both sides of the pump etc etc - from here we might be able to make some sense of it. I would lean toward the clamp-on ampmeter readings being correct especially when two different ones were used.  The motors of this size that we use have a FLA of 222 which is within the range you have stated.  Some things that work on paper just don't work out that way in the real world applications.

I think I found the problem.  The power factor/efficiency at the operating point is .85 and .92, respectively, which I didn't correct for on the pump power curve.  210-220 amps looks to be correct for the clamp on.  The power monitor will have to be recalibrated. Magnetic pumps

2011-06-24

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