Cummins Onan DFHA Specs (Power | Fuel Consumption)

The Cummins Onan DFHA generator is listed with standby output of 750 kW, diesel fuel, 60 Hz operation, 7 available voltage configurations, and Three phase.

Cummins Onan Generator Specifications

Generator • diesel • 60 Hz • Three phase

Standby power: 750 kWVoltage options: 7 configurationsDry weight: 16,923 lb (7,676 kg)

Key specifications

750 kW Standby power

diesel Fuel

7 configurations Voltage options

Three phase Phase

16,923 lb (7,676 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

16 gal/hr

50% load

26.2 gal/hr

75% load

40.5 gal/hr

100% load

54.7 gal/hr

Estimated runtime by load

Calculated from the listed 54.8 gal fuel capacity and fuel-consumption data.

25% load

3.4 hr

50% load

2.1 hr

75% load

1.4 hr

100% load

1 hr

Power-to-weight

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

This model

44.3 kW

Peer average

58 kW

36th percentile

Power output

Low 680 kW High 750 kW

Standby

750 kW

Prime

680 kW

How the Cummins Onan DFHA 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

750 kW

13% above avg

67th percentile

Dry weight

16,923 lb

9% above avg

65th percentile

Oil capacity

35 gal

30% above avg

72nd percentile

Standby power750 kW

Low 400 kWAverage 665.2 kWHigh 921.6 kW

About 13% above the similar-output Cummins Onan average. Around the 67th percentile for this field.

Dry weight16,923 lb

Low 4,643 lbAverage 15,485 lbHigh 39,573 lb

About 9% above the similar-output Cummins Onan average. Around the 65th percentile for this field.

Oil capacity35 gal

Low 8.83 galAverage 27 galHigh 54.53 gal

About 30% above the similar-output Cummins Onan average. Around the 72nd percentile for this field.

This model Peer average

Generator information

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

Electrical output

Standby power	750 kW
Prime power	680 kW
Standby kVA	938.0
Voltage options	120/208 V, 139/240 V, 220/380 V, 230/400 V, 240/416 V, 277/480 V, 347/600 V
Phase	Three phase

Engine, cooling and controls

Engine model	Cummins/Onan QST30-G1
Engine displacement	1, 861 cu in (30.5 L)
Aspiration / cooling	turbocharged, aftercooled
Rated engine speed	1800 rpm
Engine oil capacity	37 gal (140 L)
Engine coolant capacity	53.1 gal (201 L)
Oil capacity	35 gal (132.5 L)
Coolant capacity	53 gal (200.6 L)
Controller	Cascade, PCC 3100, PCC 3100 (PowerCommand), PowerCommand, PowerCommand 3100, PowerCommand 3100 (PCC)
Alternator	Cummins/Onan S-1134 (50 Hz), S-1132 (60 Hz)
Emissions	EPA stationary

Physical specifications

Dry weight	16, 923 lb (7, 676 kg)
Dimensions (L × W × H)	167.7 × 68.6 × 91.7 in (4260 × 1743 × 2328 mm)

Battery

Battery group	8D
Battery cranking	1400 CCA
Battery voltage	12 V
Battery quantity	2

Fuel system and runtime

Fuel tank	54.8 gal (207.3 L)

Fuel consumption

Standby	16.0 gal/h (61.0 L/h) @ 25%; 26.2 gal/h (99.0 L/h) @ 50%; 40.5 gal/h (153.0 L/h) @ 75%; 54.7 gal/h (207.0 L/h) @ 100%
Prime	14.7 gal/h (56.0 L/h) @ 25%; 25.9 gal/h (98.0 L/h) @ 50%; 36.3 gal/h (137.0 L/h) @ 75%; 49.0 gal/h (185.0 L/h) @ 100%

Maintenance and service parts

Engine oil	Interval: 2000 hr; Capacity: 41
Oil filter	Part number: 3825142; Interval: 2000 hr; Specification: P8500 fuel pump (G-Drive)
Fuel filter	Interval: 2000 hr
Coolant	Interval: 2000 hr; Capacity: 187
Coolant filter	Interval: 250 hr; Specification: filter
Belt	Part number: ST669; Interval: 250 hr

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