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  1. mrcoal

    Voltage Reg Question

    We have an old style Voltage Reg and I am thinking I need to micro ohm the wipe contacts to see if there is a bad connection. Based on the operators report is there anything else I can look at while investigating this problem. Thanks We put the unit back on line yesterday. This is the unit...
  2. mrcoal

    Exciter Brush Arcing

    You guys have been very helpful in pointing me in a direction in the past. I recieved this letter the other day and wanted to get any ideas that might be out there. Thanks in advance. Gentlemen, As you are all aware, we have had some unwanted burning of the Exciter Brushes on SPA #2 Unit...
  3. mrcoal

    Slip Ring Wear

    We have a turbine with the field slip rings that are showing alot of wear/grooving. We change polarity on the ring after stoneing the bad ring, the wear followed the polarity and is now grooving/wearing the other one. Its a GE exciter, direct connected 125KW at 250 volts at 450 RPM. I am...

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