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#49579 - 03/10/05 10:11 AM 3 Phase Generators  
AJA  Offline
Junior Member
Joined: Mar 2005
Posts: 2
Washburn, il
I have an engine drive 22kw induction 3 phase generator, commercially made, which will not generate any voltage. It has been flashed while turning at rated speed and above with 12 and 24 vdc without results. The generator has been removed for the engine and been flashed with the 12 vdc which has pulled the rotor to the field coils. After assembly the unit still does not produce voltage. All help is appreciated.
Thanks
AJ


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#49580 - 03/11/05 09:38 AM Re: 3 Phase Generators  
George Corron  Offline
Member
Joined: May 2001
Posts: 717
Lorton, Va USA
AJ,
A little more info would help, there are several ways to make a field. If flashing your field does not produce a voltage, you likely have a bad set of diodes, or something broken/burned in the field. If you've got brushes - replace 'em THEN flash. Is there a fuse in the exciter you missed?


#49581 - 03/11/05 09:43 AM Re: 3 Phase Generators  
IanR  Offline
Member
Joined: Dec 2004
Posts: 328
Palm Bay FL USA
May seem like a stupid suggestion but, have you buzzed the windings? I know checking for continuity seems pretty basic but hey gotta look at all scenarios.


#49582 - 03/11/05 09:47 AM Re: 3 Phase Generators  
IanR  Offline
Member
Joined: Dec 2004
Posts: 328
Palm Bay FL USA
You din't say but have you verified that the exiter is operating correctly or at all?


#49583 - 03/14/05 08:29 AM Re: 3 Phase Generators  
AJA  Offline
Junior Member
Joined: Mar 2005
Posts: 2
Washburn, il
The engine speed has be verified by two difference instruments. The windings provided the correct curve form on a scope. The rotor is laminated material and has no exciter circuit/no diodes. There were no capacitors with the unit.
AJ



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