I'm pulling my hair out over here. I'm putting in a semi-permanent generator at my house (inside a detached shed), and the engine is a Kubota D1005.
The genset manufacturer, of course, overrated the output. I knew this going into it, and ignored their max output rating, but figured the continuous was probably true"ish"
I started doing the math myself to calculate the "real" capability, and this is where the hair pulling begins.
It's an 1800rpm genset, so if you go to Kubota's published specs, the stand-by (max) output of the D1005 is 9.8kW @ 1800rpm. The gen head is rated at 79.1% efficient, so without subtracting the loss from the fan, water pump, alternator, etc., that's a max output (at a power factor of 1) of 7,751 watts, or about 32.3A @ 240v.
So, I look at the block, and the ACTUAL STICKER on the Kubota block reads:
Model: D1005-BG-EF02
Family: EKBXL01.0BCC
Power: 10.8kW/1800rpm
The sticker includes the date: 2014/07
Ahhhm. . . what?? 10.8kW. . what happened to 9.8kW? Also, what the heck is a D1005-BG-EF02, specifically, the "BG-EF02" part. This doesn't match any of the model #s on Kubota's sites. For a D1005 @1800rpm, they list "D1005-E3BG", and rates it at 9.8kW. Kubota's model # guide refers to "BG" as "old generator spec", but there's no specs or a model list.
I'm wondering if maybe BG-EF02 is a different spec of this motor with the "fuel turned up" from the factory. . . . . or is the 10.8kW printed right on the block just BS?
If you google, "D1005-BG-EF02", the only thing that turns up is EPA testing results, but they do have an exact match for the Model and Family #'s above, and the output power is rounded in the EPA docs to "11 kW".
Anybody familiar with these varying specs from Kubota? The gen head is legitimately rated to supply up to 10.5kW (with enough HP behind it), so if the motor is really putting out 10.8kW, that's closer to ~8500 watts of usable power from this set.
The genset manufacturer, of course, overrated the output. I knew this going into it, and ignored their max output rating, but figured the continuous was probably true"ish"
I started doing the math myself to calculate the "real" capability, and this is where the hair pulling begins.
It's an 1800rpm genset, so if you go to Kubota's published specs, the stand-by (max) output of the D1005 is 9.8kW @ 1800rpm. The gen head is rated at 79.1% efficient, so without subtracting the loss from the fan, water pump, alternator, etc., that's a max output (at a power factor of 1) of 7,751 watts, or about 32.3A @ 240v.
So, I look at the block, and the ACTUAL STICKER on the Kubota block reads:
Model: D1005-BG-EF02
Family: EKBXL01.0BCC
Power: 10.8kW/1800rpm
The sticker includes the date: 2014/07
Ahhhm. . . what?? 10.8kW. . what happened to 9.8kW? Also, what the heck is a D1005-BG-EF02, specifically, the "BG-EF02" part. This doesn't match any of the model #s on Kubota's sites. For a D1005 @1800rpm, they list "D1005-E3BG", and rates it at 9.8kW. Kubota's model # guide refers to "BG" as "old generator spec", but there's no specs or a model list.
I'm wondering if maybe BG-EF02 is a different spec of this motor with the "fuel turned up" from the factory. . . . . or is the 10.8kW printed right on the block just BS?
If you google, "D1005-BG-EF02", the only thing that turns up is EPA testing results, but they do have an exact match for the Model and Family #'s above, and the output power is rounded in the EPA docs to "11 kW".
Anybody familiar with these varying specs from Kubota? The gen head is legitimately rated to supply up to 10.5kW (with enough HP behind it), so if the motor is really putting out 10.8kW, that's closer to ~8500 watts of usable power from this set.
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