Question for you/anyone...
Regarding PTO speed. I've wondered about getting a PTO generator. Do I want an IH 1066 screaming outside my window at pto speed? Not if I don't have to (it's got a straight pipe).
I use a hydraulically powered mower behind the tractor. As such, the mower "requires" a 4x "speed increaser" where it jumps the PTO speed up by 4x.
My understanding is the generator has to be at a specific RPM (or maybe a specific range, I don't really know) If the generator kicks in, pulls RPM's down on the tractor, it messes with the 60 Hz thing, I think. I understand that's not good.
With a tractor the size of the 1066, (I think it's 100 hp on the pto, or was it 125? I don't recall)
Is there a way to get a smaller generator than the 1066 would handle (I know you want to match your loads) So if I needed "X" KW and that would use a 75 HP machine (and I'm making up these numbers so please, nobody get all 60 Hz on me lol) Anyway, if generator "X" is good size and it requires 75 HP, if I have 100 HP, would that give me some wiggle room on the wondering of the RPM speed? (would it be more able to maintain a steady state)
Now, bring in the speed increaser.... if I've got the 100HP available AND it will allow me to go 4x on the PTO speed AND my needs are covered in theory by say, the 75 HP machine....
Could a setup like that work? Asking for trouble? Should I just rub some sticks together?
A pto generator requires either 540 or 1000 rpm input to provide 60 Hz power.
Most household sized PTO generators will be 540 rpm inputs.
Your tractors governor will regulate your engine speed to keep it constant with varying loads.
With a 25 Kw generator requiring approximately 50 PTO Hp to produce the full 25 Kw,
that would be your maximum load. The load on the generator is what will determine the Hp required
if very little is running, a few lights, a TV or computer you could be requiring less then 1 Kw or 2 Hp.
When the water pump kicks on or a freezer and refrigerator or the furnace then your load has increased
maybe up to 10 Kw now you need 20 Hp but the required rpm has not changed.
A long way around to say that your tractors governor is very important to nice smooth power generation.
With a larger tractor having an excess of available power with a governor in good shape on small to mid sized
generators many times you can get by using the 1000 rpm pto with a 540 adapter on it and running your
tractor at half of the rated pto rpm.
My Branson has an economy pto selection which allows me to drop the rpm by about a 1/3 and still have
540 rpm on the pto output. My IH 574 has a 1000 rpm shaft however at half speed the governor is not as responsive
as I would like so the voltage and Hz gets a bit to much variance for my liking with large changes in load.
Depending on the weather I will shut down at times and switch to the 1000 shaft if the load will not be changing much.
On the farm the IH Magnums are stable enough to run the generators at half rpm using the 1000 rpm outputs.
The Puma 125 is a common rail and it seems to be too precise and aggressive in it's operation trying compensate
to fast to varying loads and will actually get the generator to bouncing on it's wheels.
