Testing an electric motor below rated voltage
Testing an electric motor below rated voltage
(OP)
We have a customer that is testing 10HP 575V fan motors at 460V. I can't see how the motors will even run, but apparently they do. What kinds of problems will they run into?





RE: Testing an electric motor below rated voltage
RE: Testing an electric motor below rated voltage
RE: Testing an electric motor below rated voltage
RE: Testing an electric motor below rated voltage
Testing at no-load (with blades removed) would not be a problem at all.
Some info to be conidered:
what is the load during the test (or current) in relation to nameplate
as Lionel mentioned, how long
may also be interesting to know if it is DOL start or soft start or vfd.
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(2B)+(2B)' ?
RE: Testing an electric motor below rated voltage
"Will work for salami"
RE: Testing an electric motor below rated voltage
We had hoped to sell the customer a test panel that would boost the voltage to 575V from their 460V supply. They decided not ot go with it, for whatever reason. They are a small shop that assembles fans for a large, well known customer. I would have assumed that the end customer being an ISO registered company would require test data. I guess not. Maybe all they require is that it turns!
Thanks for all the help. This is a great resource.
RE: Testing an electric motor below rated voltage
In addition, the slip will be increased and the fan output will be reduced by a cube of the speed change. These circumstances seem to be a poor substitute for an ISO vertified load test.