Cummins rating

Ratings are based on ISO 15550 conditions of:

• Barometric pressure 100 kPa (29.612 in Hg)
• Inlet air temperature 25°C (77°F)
• 30% relative humidity

Propeller shaft power represents the net power available after typical gear losses and is 97% of rated power. 

Fuel consumption has a tolerance of +/-5% and is based on fuel of 35° API gravity at 16 °C (60 °F) having an LHV of 42,780 KJ/KG (18,390 BTU/lb) when used at 29 °C (85 °F) and weighing 838.9 g/liter (7.001 lb/US gal). 
 

Auxiliary and Generator Set 

Prime Power
Engines with this rating are available for an unlimited number of hours per year in variable load applications. Variable load is not to exceed a 70 percent average of the rated power. A 10 percent overload capability is available for a period of one hour within a twelve hour period of operation. Total operating time at the 10 percent overload power shall not exceed 25 hours per year. This power rating follows ISO 8528 guidelines.