3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
Forum Discussion
Loosenut wrote:
This thread has been very entertaining and informative. Maybe I can offer some insight to the low output issue with this generator.
The problem with parralleling the coils in this generator (assuming that the schematic is correct) appears to be caused by the way the AVR input voltage is derived from the main windings. The AVR voltage is obtained from a portion of *both* main windings, not just a portion of one winding as in many generators in this class. When the windings are converted from 240 volts center-tapped to parallel 120 volts, the configuration of the AVR tap points change and the voltage applied to the AVR input is probably increased (it depends on the location of the tap point), the AVR lowers the field current to bring the AVR input voltage back to what is expected and this results in the low main winding output voltage. It would be helpful to know what the normal AVR input voltage is under the original factory configuration. Depending on the normal AVR input voltage and the adjustment range of the AVR (if it is adjustable) it might be possible to reconfigure the tap points.
However, it is entirely possible that this generator may not be able to be configured for full power at 120 volts without rewinding or at least moving the tap points in the main winding.
Mike
I was looking at the schematic and wondering the same thing
my champion and many other gensets sample one winding, across the winding for 120 feedback/reference voltage
this schematic has taps to both windings, of a series wound center tap setup
the reference voltage could be 120 or even 60 or even 230 depending on the tap placement, paralleling the windings, changes the reference voltage
my first thought, when diagram was posted, was that the AVR taps were mis-drawn, but now with the testing results from changes posted, it seems, the drawing is correct, the AVR is not setup the same, as to what we consider avg/normal.
the genny works as is, but NOT with full amps at 120 on (1) outlet, and cannot be changed with out replacing the AVR or perhaps modifying the tap points,
something we cannot advise on, with out knowing the TRUE reference voltage needed
