FYI - I have a 15kw China Genset and get 15 ohms between the rings on the rotor. I show no reading (infinite resistance) between the rotor winding and ground.
-Dave Walton On 9/20/07, dave walton <[EMAIL PROTECTED]> wrote: > You don't need anything fancy to control the excitation voltage. I've > seen everything from a diode and a resistor, to a microprocessor board > with fuzzy logic that also controls the throttle. Here is a basic > troubleshooting guide: > > http://utterpower.com/Trouble.htm > > -Dave Walton > > On 9/20/07, Jim Cathey <[EMAIL PROTECTED]> wrote: > > >> It looks like the center of the field winding might be, each > > >> slip ring measures in the 5-9 ohm range to frame ground. > > >> I'm guessing that's not good? > > > How close are the ohm readings? Could the winding be center tapped to > > > ground or someplace else? (Just guessing.) > > > > It's _possible_, but I fail to see the purpose behind it. > > Ground is the only possible place for the center tap, > > there is no third slip ring or other way to get at it. > > > > If it's a single short it might even be harmless, but if > > more than one wire is shorted there could be eddy currents > > circulating in the loop thus formed that would cause > > overheating or other problems. There would also be a > > proportional reduction in field strength, depending on > > how many turns were shorted out. > > > > I'm sure rewinding the rotor is _possible_, but I'm not > > sure I want to go there! There's no guarantee that the > > (complex) regulator works, either. > > > > -- Jim > > > > > > _______________________________________ > > http://www.okiebenz.com > > For new parts see official list sponsor: http://www.buymbparts.com/ > > For used parts email [EMAIL PROTECTED] > > > > To Unsubscribe or change delivery options go to: > > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
