Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: aprilee
  • Order by date
  1. aprilee

    RF Testing

    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...
  2. aprilee

    RF Testing

    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!
  3. aprilee

    5HV-250 Breaker

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

    Excitation System

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

    Power Factor

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

    Power Factor

    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...
  7. aprilee

    Inrush current deruction

    It's a centrifugal ash booster pump.
  8. aprilee

    Inrush current deruction

    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!
  9. aprilee

    Inrush current deruction

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

    Inrush current deruction

    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!

Part and Inventory Search

Back
Top