Can anybody tell me what is the per hr fuel consumption of a 350 Kva and 200 Kva diesel generator.?

Answer 1

(Four stroke) Diesel engines have a specific fuel consumption of about .34 to 0.4 lbs per horsepower hour (210-240 grams fuel per kWh).

Using values from the middle of that range gives: 174 pounds (79) kg fuel per hour at 100% output of 350 kva.

99 pounds (45 kg) per hour at 200 kva.

Diesels maintain their efficiency at lower outputs better than gasoline engines (because fuel is metered instead of the air flow being throttled). So to a good apporximation, you can use those specific fuel consumption for the same generator at lower loads. e.g 50 pounds/hour at 100 kva.

Note that .37 pounds/hour per hp-hr is for shaft work out of the diesel engine. If the electrical output is 350 kva, then increase the consumption by the generator efficiency (divide by 0.85 to 0.90).

Answer 2

Look at a manufacturer's data sheet or technical specifications for a 200-350KVA generator (or equivalent). Check Caterpillar, for example. I know they make large generators. I'm sure they will specify fuel consumption under a certain load.