Backup Generator

[Chilliwack Murray]

And Hino engines not available in NA, New Holland and all have manufacturer ID removed and have a Generac Engine # only. Many like the Hinos were models not sold in NA. They were the first to do this in the large gen market. Parts support for the large units was poor, items like water pumps for $4700 on a 5L diesel with 3 week delivery is not the norm for commercial emergency generators.

Not going to argue, just stating what I’ve seen over the past 25 years... They are the butt of all jokes in the business.

The point I was making however was that for most people these or any other cheap brand will serve the purpose and in the long run will give the most bang for the back.

 

[CobyRupert]

My 2 cents :2cents: on 1800rpm vs. 3600rpm:

As with most things electrical:
Although we rate electrical things in "Amps" or "Watts", their rating (or lifespan really) is really a function of Heat (temperature) & Time (exposed to that heat). Sort of like something made of fiberglass or plastic that does/doesn't get exposed to the sun.

Example: A transformer may be rated for 30kva with a expected lifespan of 30 years, but if you run it at 15 kva it may last 60 years, or if you run it at 50kva, it may last 5-10 years, or a few months (depending on ambient temps). Same with cables. Same as how (thermal) breakers operate. Same with generators.

Often a generator manufacturer will say (for example): "This model is a 125 kVA "Stand By" generator (used for temporary outages), and this model here is a 100KVA Prime Power generator, and this model here is a 80KW Continuous Power generator. And it's the same generator!

 

[downsizingnow48]

The Kubota engine (D1005-BG) in the CMD generator set is rated in the Kubota spec sheet at 9.8/13.1 (kw/hp) standby and 8.7/11.7 continuous.

 

[Chilliwack Murray]

Equipment life is directly related to load and especially temperature.

Typical large alternators have a 30,000hr insulation rating for class F insulation but that is at 80C. At 120C that will be down to 12,000 and at 200C it’s down to 1000hrs. You might think things don’t get that hot but remember where the windings are packed into the stator with no airflow, they actually do see these types of temperatures at 30C ambient and 100% load. That heat is drawn off and dissipated by the statue frame if the ambient temperature is within specs. Like not putting it in a box. These alternators are rated in temperature rise of 80, 100, 120C temperature rise meaning windings will be 80C or higher above ambient at full load.

Larger engines are generally rated in hp/hrs and major maintenance and overhaul events are largely based on fuel used. While it’s not ideal, diesel units use fuel in direct proportion to load and a lightly loaded unit will use about the same amount of fuel as a smaller unit with more load between about 20 and 80% of rating. If you control the ambient temperature so the intake temp and coolant temp are maintained a larger unit can run nights with light load with little issue. Running at higher load for an hour or two will clean it up again if necessary. Issues with wet stacking and carbon buildup result from hundreds of hours on light load or like I said low temperatures.

Gas units also use fuel in direct proportion to load but are a little less linear and it won’t hurt them at all to run lightly loaded for the number of hours a home owner would put on. Most people would never see the payback of multiple units trying to save a little fuel. Get something that you can afford and will run under 80% most of the time.

Having a second, small generator is handy however if your main unit fails or you need light and power to get it going or repair, carry it out back to run your tractor block heater etc.

 

[cdaigle430]

If someone is afraid to leave their tractor running, that's fine, don't do it... BUT that doesn't mean every one is...

My tractor runs at 1,900 at pto speed, is THAT, that much worse than 1,800?? I look at things like that BEFORE I buy a tractor, not complain about it later when I bought something I'm then afraid to use.

My tractor will power my whole house on less than one gallon an hour, yes that is a bit more fuel, but my tractor AND pto generator cost me less than a stationary diesel generator would have cost me, and I have a tractor to use when it's not generating!

SR

Im not afraid to use my tractor or leave it running. Its inconvenient as you must refuel, you must check fluids and using it as a generaotr ties it up for other things like snow removal. My Generac 16kw NG is a blessing, can be 20 below, power goes out and I never have to go out in the cold to set up or fuel.
But still a tractor is okay as a power backup station but not off grid. Unless thats all you need it for, I suppose if someone bought a diesel tractor and no implements from an auction just to use as a power station-that could be a great idea if the price was right. Lets say it didnt even drive but the PTO worked, could tie it in to a 55 gallon drum of diesel...thats an idea.Maybe even buy one of the old Army deuces, it has a PTO in front that way you can just run a generator and use K1, N2 or gas even-whatever available.

 

[LittleBill21]

The Kubota engine (D1005-BG) in the CMD generator set is rated in the Kubota spec sheet at 9.8/13.1 (kw/hp) standby and 8.7/11.7 continuous.

do you have a link?

 

[Hunter29]

http://www.kubotaengine.com/assets/documents/_k_enginecatalog_nyuko_ol.pdf

 

[LittleBill21]

http://www.kubotaengine.com/assets/documents/_k_enginecatalog_nyuko_ol.pdf

Thank You!

 

[Hunter29]

Thank You!

Welcome, gonna buy one?

 

[LittleBill21]

Welcome, gonna buy one?

no i have 3 generators, and don't get enough outages to warrant a bigger one, just trying to understand everything. whats interesting though is you really need to look at fuel usage

the
Kubota 9,875 Watt Diesel Generator

has almost identical fuel usage to a 12k isuzu

Isuzu 12 kW Diesel Generator

curious why the fuel economy is so much different

the 12k kubota is almost double
Kubota 12 kW Diesel Generator