ccjersey -
Thanks for your help. Ignoring everything else, the overall problem is low voltage on the output with no load. I have connected a small load, but this does not make a difference in the voltage. So the unit is working but not at full potential. One part that I do understand is the...
Everyone: Thank you for the info and links. Now that I have looked at the links I seem to know more about what I am dealing with (an ST type generator). It seems that some people dont use a regulator with this type of generator. Some of the information is a bit technical for me. I...
Thank you everyone. Previously I tested another regulator and rectifier in attempt to solve the problem, but this did not solve the problem. Maybe the new regulator and or rectifier were faulty also. However I don't think the rectifier is bad because it tests OK. There is a small auxilary...
Thank you. Here is a link to pics of the parts in the excitation circuit. http://www.members.aol.com/wdamico I am not sure if this is standard or non-standard, but it seems to be very simple. I believe that this is a comutator not slip rings. The only current that the brushes carry is the...
Thank you both for your helpful and quick responses. The system is very simple. There are no capacitors. The unit is new so the commutator and brushes for the excitation circuit are good and not dirty. The system has a rectifier and a voltage regulator on the excitation circuit. I changed...
I have a 20KW diesel generating set with a problem maintaining constant output voltage. The generator is supposed to put out 120/240 volts, but sometimes puts out 100/200 volts and sometimes does not generate at all. If I boost the excitation circuit with external power it will start...
