Posted by Tom on July 7, 2008, 4:03 pm
mark did not write anything about 120v but it was in reply to something
ulysses "see the >>" wrote
the northstar (as sold by notherntool) pro series have no voltage regulator
and have no low oil shutdown.
the voltage and Hz is controlled by capacitors and engine speed. idle
voltage is around 125 and decreases at full load/full engine speed to just
Posted by Ulysses on July 7, 2008, 4:40 pm
running 3000w on
Well, if you can get that much power from each leg individually then you are
probably in good shape.
specific to the
I'm not sure how it's done either. Since you have some kind of electronic
voltage regulator it's different from having an alternator (generator head)
that is designed to run at 60 Hz at 3600 rpm and can output higher voltage
by increasing the engine speed. Increasing the engine speed also increases
the frequency. Perhaps yours cannot be adjusted. I am so used to using the
speed control type that I overlooked your voltage regulator. In any case
you can still check the output voltage and frequency and see if it looks OK.
Generally, from what I've read, most appliances will accept frequency
variations within about 2% so that would be about 58.8 Hz to 61.2 Hz.
However, I have found 63 Hz to be OK with most things. That is my personal
experience so your gadgets may differ. If you find that your voltage is
lower than, say, about 117 VAC and your frequency less than 58.8 Hz then I
would have the voltage regualtor checked.
seen it go
Most likely the inverter will be either on or off. If the DC input is too
low it probably will not come on at all. But inverters can be tricky. I
have a Honda eu2000 inverter generator with a worn-out engine. It will
start up and come on and output AC but it does not have full power because
the engine cannot deliver the full power. If your output voltage from your
generator is low then the air conditioner's inverter might not be able to
draw enough power to run properly. This all seems very unlikely because of
the size of your generator if you are only running the Air Conditioner. If
you have all of your appliances running from one leg of your generator then
you could simply be overloading it. You seem to have determined that the
generator has adequate output. How is it wired to your house or whatever?
Do you have each seperate leg of the generator connected to a seperate leg
on the house wiring? Are you balancing your loads by having the
refrigerator on one leg and the air conditioner on another?
Posted by ransley on July 7, 2008, 7:40 pm
At that price of his unit I dought his unit has anything special in
voltage regulation that will do any better than keeping it at less
than 5-6v swing, my 7500 Generac with avr is that way. He still needs
to manualy make a set point based on load used. 3600 rpm is still
60hz, and varies with rpm. Im sure an adjustment to rpm is easy to
Posted by Mike Copeland on July 4, 2008, 10:38 am
Most gensets have a low oil shutdown and is somewhat common to see this
activate several hours after initial startup.
Posted by Mark on July 4, 2008, 11:56 am
Mike Copeland wrote:
the northstar 8000 PPG/ Honda 390GX had just been fully serviced 2 days prior,
oil, new battery etc.
it's this unit http://www.northerntool.com/downloads/manuals/165914.pdf