Re: generator help

Posted by Kevin (FL) on October 23, 2005 at 05:11:34 from (12.77.198.248):

In Reply to: generator help posted by Ronnie269 on October 22, 2005 at 05:09:50:

Ronnie,

Something ain't right here. Is this a direct-driven generator? Belt-driven off a pulley?? Diesel engines are governed to run at a specific RPM. Most smaller genset engines are governed to either 1800 or 3600 RPM. Larger diesels are governed at 1200 or even slower depending on size/HP. You can't take an 1800 RPM engine and force it to turn 3600--even if you override the governor, I believe it will come apart before you got to 3600 RPM. The same for the 3600 RPM engine--doubling the RPM will create a shrapnel grenade....With that being said, are you certain about RPM? Maybe a faulty tachometer?? If you don't have a good frequency meter, you can also use a phonograph and play a record--you'll hear the pitch of the music is off when the frequency is not at 60 hertz.

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