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warren
Join Date: Feb 2002
Posts: 54 Iowa
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-02-27          35923

Hi
I was wondering what horse power a 15000 watt generator would take seen one advertise at an auction.I have an 4400 deere can't recall what horse power that machine has.
Thanks
Warren


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pto generator

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Roger L.
Join Date: Jun 1999
Posts: 0
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-02-27          35928

Be sure you are looking at PTO HP and not engine HP when you look up the power of the tractor. A common rule of thumb is to allow two tractor PTO HP for every 1000 watts of electrical power. (the actual scientific conversion says that you can get 50% more electricity out of your two hp, but you probably don't want to work your tractor that hard).
Remember that we are talking maximums here. In actual home use, a 15000 watt generator is rarely asked to put out that much constant power, so it doesn't always need full tractor hp to turn it...only when all the circuits are loaded.
More commonly you will be drawing perhaps 5000 watts, and the governor on the tractor will automatically reduce the throttle so that the engine is only working at a proportionately reduced hp rate.
....

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TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-02-28          35938

Yes, and you sure don't want a generator that's so large that it's capable of lugging the engine. If the tractor governor can't sustain rpm's during peak loads, the rpm fall off which reduces the AC frequency and risks burning out electric motors. ....

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Peters
Join Date: Feb 2002
Posts: 3034 Northern AL
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2002-02-28          35951

And the answer is 30 hp on the PTO. In the future you can use the URL link below. ....


Link:   Specs for JD4400

 
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