Generator problem
Generator problem
(OP)
Our generator has stopped generating... Power went down slowly ( in about an hour) from the normal 240 V to about 60 volt..
Generator is a Motori Morelli , about 12 KW .. Current no load voltage is 60v , Have disconneted the AVR , still producing 58 volt..
Am I right in thinking the AVR is the most likely problem?? Generator has no brushes..
Generator is a Motori Morelli , about 12 KW .. Current no load voltage is 60v , Have disconneted the AVR , still producing 58 volt..
Am I right in thinking the AVR is the most likely problem?? Generator has no brushes..





RE: Generator problem
RE: Generator problem
You don't have a Permanent Magnet Generator feeding the AVR do you? A progressive winding failure in a PMG may have those symptoms.
Generally the AVR feeds a brushless exciter on the shaft. When the set is stopped, an AC voltage (variable,- ramp the voltage up slowly) on the field leads should produce an AC voltage at the rotating rectifiers.
Bill
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"Why not the best?"
Jimmy Carter
RE: Generator problem