PTO Generator Question

[Industrial Toys]

That happened to be the throttle setting for the JD (Yanmar) 770 for 540. A combination with the Onan 15KW PTO that worked very well.

Leaving any tractor unattended is not something I like the idea of, but running at full throttle is particularly unnerving.


I'm guessing, many people haven't even paid for their tractors. A leaking rad or blown hose maybe covered under warranty. Having the engine seize up on account of that, is probably not covered. Some people might have trouble coming up with 12 or so grand for a new motor.

 

[cdaigle430]

I have never figured out why, when the power goes out for some one, and they are on generator power, they have to run everything in their house?

I mean, can't you go without a hot tub or other "non essential" power robber, until the power comes back on??

SR

The hot tub is outside so in the summer or days where temp doesnt go below freezing its no problem. the winters here are brutal so if I lose power to my hot tub and dont get it back in 12 hours I could freeze damage the hot tub and pipes. Its not a cheap hot tub either we paid too much IMO-but the wife wanted one.
Im not sure how long it will take for it to freeze though and I am really sure I dont want to find out LOL. I have my 16kw home generator before the hot tub came into our home.

 

[cdaigle430]

My TYM has around 36 HP at the PTO. The PTO generators I see out there are primarily two ranges:
1. Around 13 - 15 KW which requires a HP in the upper 20s.
2. Around 25 KW which requires a HP in the upper 40s.

If I used a generator larger than rated for my tractor but I am only pulling around 16 - 20 KW, would this create problems? As long my tractor can maintain the 540 rpm, am I OK regarding providing clean power to my home?

I say yes you would have problems if using a generator rater in the upper 40s hp on a 36hp tractor. I believe they are aligned for optimal use in the ranges recommended. Too few HP and you will have issues maintaining load current and frequencies.

I also read that you can reduce the life span of the generator that way and if you have problems the first thing they will point out on the warranty call is your HP rating.

You will also put more torque on your engine and hydraulics which could mean more wear and tear but also increase your fuel consumption.

 

[LouNY]

I say yes you would have problems if using a generator rater in the upper 40s hp on a 36hp tractor. I believe they are aligned for optimal use in the ranges recommended. Too few HP and you will have issues maintaining load current and frequencies.

I also read that you can reduce the life span of the generator that way and if you have problems the first thing they will point out on the warranty call is your HP rating.

You will also put more torque on your engine and hydraulics which could mean more wear and tear but also increase your fuel consumption.

A generator will not require more HP then the load it is putting out,
a 25 kw generator loaded to 10 kw will require close to 20 hp,
a 36 hp tractor would have absolutely no problem with that load,
if you increase the loads to the generator to over 18 kw the tractor will start to pull down as it is being overloaded.
The generator doesn't really care how much tractor hp is running it as long as it is sufficient for the applied load.
With a lack of hp to the generator as the tractor pulls down the frequency and voltage of the generator will decrease,

If you have a 25 kw generator on an 80 hp tractor and try to run a 30 kw load the tractor would not care but the generator
will either trip out on an overload or let all the smoke out of the winding.

 

[RickB]

A generator will not require more HP then the load it is putting out,
a 25 kw generator loaded to 10 kw will require close to 20 hp,
a 36 hp tractor would have absolutely no problem with that load,
if you increase the loads to the generator to over 18 kw the tractor will start to pull down as it is being overloaded.
The generator doesn't really care how much tractor hp is running it as long as it is sufficient for the applied load.
With a lack of hp to the generator as the tractor pulls down the frequency and voltage of the generator will decrease,

If you have a 25 kw generator on an 80 hp tractor and try to run a 30 kw load the tractor would not care but the generator
will either trip out on an overload or let all the smoke out of the winding.

Exactly. I powered my house using a 25/40kw Winpower unit behind a 42hp Case 885 with the PTO on high speed. 540 PTO RPM at about 1300 ERPM. It MAYBE would make 25 PTO HP at that speed. Stable voltage and frequency unless I flipped on the central air, which I did without.

Back in the day on the dairy farm that generator would give 70 PTO HP a workout.

 

[Sawyer Rob]

I say yes you would have problems if using a generator rater in the upper 40s hp on a 36hp tractor. I believe they are aligned for optimal use in the ranges recommended. Too few HP and you will have issues maintaining load current and frequencies.

I also read that you can reduce the life span of the generator that way and if you have problems the first thing they will point out on the warranty call is your HP rating.

You will also put more torque on your engine and hydraulics which could mean more wear and tear but also increase your fuel consumption.

You are seriously "uninformed" on the subject of pto generators!

Hopefully you learned something from Lou's answer!

SR

 

[Industrial Toys]

A hot tub at temperature would be a major energy waste if not insulated to keep it from frreezing in a few days of outage. But it is an interesting question I have tackled with, wondering if there is enough heat migrating to the pump and pack in freezing conditions as the water cools off. It might be worth of putting a temperature alarm on the pump, rather than loose sleep wondering.

 

[WranglerX]

Let look at another way, one spends lets say $13,468 for MF GC1715 tractor and another $1500 to $3000 for PTO generator when you could have bought a 10,000 Watt (13,000 surge) portable for under $3,000 Including cost of transfer switch.......

https://www.northerntool.com/shop/tools/product_200467368_200467368

Dale

 

[Sawyer Rob]

Doesn't MOST of the folks on here, already HAVE a tractor??

Many of us have two or more...

BTW, my 15KW Winco pto gen set NEW, was $1,250.00 when I bought it.

SR

 

[WranglerX]

Why would I have two tractors, I only have 5 acres and about 2 of them are not tractor friendly.... Sort of wondering why I bought a tractor in first place....

But yes I do need generator at times for winter storms and when summer condition are that utility company will cut power during wild fire season...

Dale