B2320 PTO generator speeds

[displacedPA]

I have been looking at pto generators all use 540rpm.
My thoughts are can, I use my 960rpm setting on my pto to run at a lower motor rpm and still get to 540 rpm at the PTO

I dont want to load the tractor to much but this was just a thought I had..

thanks for any input..

 

[JCByrd24]

The HP required by the generator will be related to how much electricity you are trying to draw from the generator. For many reasons, I would buy the generator based on running the 540 rpm PTO and your tractors HP. Then, when you have low electrical loads, assuming you've calculated the engine RPM necessary to run the 960 rpm at 540, you can try running the generator like you suggest. My suggestion would be to calculate the kW you think you are using compared to the generator rated output, and not exceed 30-40% of that. Then, listen to what the engine is telling you. If it bogs and doesn't recover within a couple seconds of applying the electrical load (similar to a standalone generator), you don't have enough HP and need to switch to the 540 rpm PTO. Again, this will vary depending on the electrical load at the time, for some things it'll work and some things it won't.

 

[leonz]

You should plan on running your generator
at the 540 R.P.M., throttle setting as the
possiblity of damaging the generator if it
has carbon brushes and your appliances
with less than 115-230 volt AC power as
the circuit boards could be damaged
from possible voltage spikes.


In my example the coleman generator
I own is set up with a high idle throttle
setting to provide 2 legs of 110-120 volt
power at all times with no loss of power
or possile voltage spikes.



_________________________________________________________________
Once you go flail you never go back:thumbsup::licking::drool:

 

[bp fick]

The B2320 has two settings for the PTO. In the 540 setting, the engine is turning about 2770 rpm. When set in the 960 position, (if the engine was again spinning at 2770 rpm) the PTO rpm would be 960 rpm. But the engine runs approximately 45% less rpm to achieve the same 540 PTO rotation speed. This would put your engine's rpm at or about 1250.

As long as the generator is spinning at the speed required, I don't particularly see how it knows or cares what RPM speed the engine on the tractor is turning.

Am I missing something here? Would it hard on the tractor to run at 1250 rpm sitting there, turning it's PTO?

 

[leonz]

If I remember correctly the 540 R.P.M., setting assures that the current delivery and amperage is 220 volt single phase at 100 amperes minimum.

The other thing is that they do not have a voltage regulating transformer on the output side of the generator as well to protect the appliances/motors/goodies.

 

[kuboman]

You will find your tractor will not be able to deliver much in the way of HP at that low of rpm. 1250rpm is hardly more than an idle. You will also find that as the electrical load changes your engine rpm will vary too because it is unable to govern properly.

 

[PHILIP8N]

The B2320 has two settings for the PTO. In the 540 setting, the engine is turning about 2770 rpm. When set in the 960 position, (if the engine was again spinning at 2770 rpm) the PTO rpm would be 960 rpm. But the engine runs approximately 45% less rpm to achieve the same 540 PTO rotation speed. This would put your engine's rpm at or about 1250.

As long as the generator is spinning at the speed required, I don't particularly see how it knows or cares what RPM speed the engine on the tractor is turning.

Am I missing something here? Would it hard on the tractor to run at 1250 rpm sitting there, turning it's PTO?

Ditto, Not enought hp at 1250 rpm to power more than a fridgerator and a few light bulbs, plus the governor will not pick up the load very well. We build small compressors with Kubota and Cummins engines and they run full out at 2600 rpm for hours on end for 1000's of hours with no issues. Buy the generator sized for the 540 pto / 2770 engine rpm and don't worry about it. This is where a small short stroke engine is suppose to run. If you are still worried about it, buy a 8K/10K stand alone gasoline generator. I have one that runs 3600 rpm with several 100 hours on it, no problems. Philip.

 

[BeezFun]

Hmmm, I'm confused. I have this PTO generator which also says it runs at 540 RPM, but I run it off my rear PTO and set the engine at the same RPM I use to mow with, which means the PTO is turning 960. I check the voltage on the generator to fine tune the RPM, but it's pretty close to the mowing RPM. I've been using the generator for years now, and it works, so I must be missing something...

 

[jakell2010]

Bees,,,,your rear PTO MOWERS ALL RUN AT 540,,,,why does everyone think they are smarter than the design teams that put millions into the R&D for these products.

The tractor is designed to run at the little red line on the tachometer,,,that's why they put it there, you will do more damage to your machine trying to half the RPMs then you'd ever do running it for weeks on end where it's supposed to be

 

[displacedPA]

this is all good info.. guys thanks... Ill keep researching but i may end up with a stand alone gen. why put the hours on the tractor...