Calculating Wattage Rating for Generator to Power Electric Motor

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SUMMARY

The wattage rating for a gas or diesel generator to power an electric motor with specifications of 72-144VDC and 190A continuous is calculated to be 27.36 kW. Considering an efficiency of 85%, the required input power is determined to be 32.2 kW. This aligns with the continuous horsepower rating of 43.7 HP, confirming the calculations are accurate and consistent.

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What would be the wattage ratting for a gas/diesel generator to power an electric motor with these specs.

72-144VDC
190A Continuous
43.7HP Continuous

Thanks
 
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Well the maximum electrical output is : 144 x 190 = 27.36 kW

Assumming 85% efficiency the required input power would be 27.36/0.85 = 32.2 kW

Which (no surprise) is approximately equal to 43.7 HP as given.
 
thank you
 

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