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Cummins Onan DFCC Specs (Power | Fuel Consumption)

The Cummins Onan DFCC generator is listed with standby output of 350 kW, diesel fuel, 60 Hz operation, 11 available voltage configurations, and Three phase.

Cummins Onan Generator Specifications

Generator • diesel • 60 Hz • Three phase

Standby power: 350 kWVoltage options: 11 configurationsDry weight: 7,251 lb (3,289 kg)

Key specifications

350 kW Standby power
diesel Fuel
11 configurations Voltage options
Three phase Phase
7,251 lb (3,289 kg) Dry weight
60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Fuel consumption by load
How fuel use changes as generator load increases.
25% load

8 gal/hr

50% load

13.4 gal/hr

75% load

19 gal/hr

100% load

24.4 gal/hr

Estimated runtime by load
Calculated from the listed 11.1 gal fuel capacity and fuel-consumption data.
25% load

1.4 hr

50% load

0.8 hr

75% load

0.6 hr

100% load

0.5 hr

Power-to-weight
Standby output per 1,000 lb of dry weight versus similar-output Cummins Onan models.
This model

48.3 kW

Peer average

45.1 kW

72nd percentile
Power output
Low 315 kW High 350 kW
Standby

350 kW

Prime

315 kW

How the Cummins Onan DFCC compares

This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.

Standby power
350 kW
50% above avg
91st percentile
Dry weight
7,251 lb
22% above avg
77th percentile
Oil capacity
10.01 gal
31% above avg
76th percentile
Standby power350 kW
Low 150 kWAverage 232.8 kWHigh 354.6 kW

About 50% above the similar-output Cummins Onan average. Around the 91st percentile for this field.

Dry weight7,251 lb
Low 2,199 lbAverage 5,923 lbHigh 12,467 lb

About 22% above the similar-output Cummins Onan average. Around the 77th percentile for this field.

Oil capacity10.01 gal
Low 1.81 galAverage 7.66 galHigh 13.73 gal

About 31% above the similar-output Cummins Onan average. Around the 76th percentile for this field.

This model Peer average

Generator information

Manufacturer Cummins Onan
Model DFCC
Generator type Generator
Fuel diesel
Frequency 60 Hz

Electrical output

Standby power 350 kW
Prime power 315 kW
Standby kVA 438.0
Voltage options 110/190 V, 115/200 V, 120/208 V, 127/220 V, 139/240 V, 120/240 V, 220/380 V, 240/415 V, 254/440 V, 277/480 V, 347/600 V
Phase Three phase

Engine, cooling and controls

Engine model Cummins/Onan NTA855-G3
Engine displacement 854 cu in (14 L)
Aspiration / cooling Turbocharged and Aftercooled
Rated engine speed 1800 rpm
Engine oil capacity 10 gal (37.9 L)
Engine coolant capacity 13.5 gal (51.1 L)
Oil capacity 10 gal (37.9 L)
Coolant capacity 13.5 gal (51.1 L)
Maximum ambient 122 °F (50 °C)
Controller PowerCommand, PowerCommand 2100, PowerCommand 3100, PowerCommand 3100 (PCC)

Physical specifications

Dry weight 7, 251 lb (3, 289 kg)
Dimensions (L × W × H) 142 × 50 × 63.6 in (3607 × 1270 × 1615 mm)

Battery

Battery group 8D
Battery cranking 975 CCA
Battery voltage 12 V
Battery quantity 2

Fuel system and runtime

Fuel tank 11.1 gal (42 L)

Fuel consumption

Standby 8.0 gal/h (30.0 L/h) @ 25%; 13.4 gal/h (51.0 L/h) @ 50%; 19.0 gal/h (72.0 L/h) @ 75%; 24.4 gal/h (92.0 L/h) @ 100%
Prime 7.6 gal/h (29.0 L/h) @ 25%; 12.5 gal/h (47.0 L/h) @ 50%; 17.3 gal/h (65.0 L/h) @ 75%; 22.4 gal/h (85.0 L/h) @ 100%

Maintenance and service parts

Engine oil Interval: 100 hr; Capacity: 10.0 gallons
Oil filter Interval: 1000 hr
Fuel filter Interval: 500 hr
Air filter Interval: 1000 hr; Specification: If the engine is equipped with an oil bath type air cleaner, fill to the level indicated with oil of the same viscosity as used in the crankcase. However, a non-detergent (straight mineral) oil is recommended.
Coolant Interval: 5000 hr; Specification: For units which use either a radiator or heat exchanger (city water cooled), fill the cooling system with clean soft water, The standard radiator and block capacity is 21 U.S. gallons. Use a good rust and scale inhibitor. If there is any possibility of a radiator cooled plant being exposed to freezing temperatures, use antifreeze with ethylene glycol base as instructed in the Cummins manual.; Capacity: 80.63 L

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.

Ernie Lo

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