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T&T: Update-Generator recommendations

From: Chris Grubb (no email)
Date: Mon Aug 09 2004 - 09:22:42 EDT

  • Next message: Randy: "T&T: Navigation Software"

    << Dumped volts this past w/e (again). It's one of
    these old units that has a magnaciter vs. voltage regulator. >>>

    Many, many thanks to all who responded with my Onan woes. I did get some
    excellent contacts as where to buy a new genny. Excellent prices, but still
    beyond our means at this time. Even located a good RTO.
    What I ended up doing was bypassing our magnaciter (again, an old dinosaur
    Onan) and installed a Power-Tronics static exciter and electronic voltage
    regulator. Still have to fine tune the governor and voltage tonight.
    However, the problem of voltage dumping has been rectified (wooo-hooo!).
    Maybe we can get another few years out of this beast. Replacement is going
    to happen, but when the wallet can accommodate.
    Really had me going at first. Measured voltage with my trusty digital volt
    meter (cheapie). One leg had 140v, the other had 105. Change the scale on
    the meter to 600v, and the 140 leg read 360v. Checked both legs and was
    looking for 240, but had 462. After 5 hours of checking, rechecking, I
    finally checked the legs with my trusty Kill-o-Watt meter. 123v each leg.
    Read the Kill-O-Watt manual and it states voltage is measured in true RMS
    values. Borrowed a true RMS meter, combined I had 245v @ 61.5 htz. I feel
    much better but can't figure out why using the old dinosaur magnaciter, my
    cheapie volt meter read correctly. However, using a electronic regulator,
    it reads waaaaay off. I'm going to contact Power-Tronics about this today
    to be sure there is no danger of hurting anything. Guess it's something in
    the waveform. All items aboard appear to be functioning correctly.
    Hopefully this is a standard scenario and my problems are behind me. I'd be
    curious if anyone else gets wild readings on their genny vs. line power.
    Again, many thanks to the list!
    Chris
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