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Thanks guys. Our company uses RF (Radio Frequency) testing as opposed to EMI testing. RF testing - Records signatures at each frequency band in a standard testing format. Results are compared to previous readings to determine if degradation has occurred. From the responces I got, it doesn't...

I'm not very familiar with RF testing and it's benefits. Does anybody know how often it should be done? How important is it in identifying motor failures before they occur? Any information on the subject is highly appreciated. Thanks!

Hello! Does anyone know where I can find spare parts for our 2000Amp 5HV-250 breakers?

Is there any good material on different Excitation Systems and how they work? Thanks!

Thanks a lot for the info. They helped a lot!

A trick question regarding lagging and leading power factor: Is this determination based on the direction of var flow (in or out), or is it based on watt and var flow in the same direction? If watts and vars are flowing out of a substation, we have a lagging PF. If watts are flowing out, and...

It's a centrifugal ash booster pump.

Thanks for the answer. You are right, I mean LR current. So, this 1:1 reduction must affect the LRA right? Do you know how long does a typical motor take to get to it's rated speed? Thanks!

Thanks a lot for the answer. That answers my question for now. Do you know the formula for the inrush current? Thanks!

I need to install a soft-start on a 200HP, 460v, 226 FLA motor. My question is, what would a 30% voltage reduction do to the inrush current? It would reduce it by how much? Thanks!