HomeCummins/OnanCummins/Onan DQDAA

Cummins/Onan DQDAA Generator Set

The Cummins/Onan DQDAA is a 250 kW (313 kVA) diesel standby generator set powered by a Cummins/Onan QSL9-G3 NR3 engine. It is available at 110/190 V, 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V and 347/600 V, 3-phase and 60 Hz. It holds about 22.7 L (6.0 gal) of oil and 30.3 L (8.0 gal) of coolant, with a maximum ambient rating of 54 °C. Starting uses battery rated 750 CCA at 24 V. The set measures 3023×1270×1676 mm (119.0×50.0×66.0 in) and weighs about 2184 kg (4815 lb).

250 kW
Standby
8.9 L
Displacement
22.7 L
Oil capacity
1
Document types

How to read your Cummins/Onan serial & model number →

Typical fuel consumption for 250–255 kW Diesel generators →

Compare with other 250–255 kW Diesel generators →

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power250 kW
Standby kVA313
Prime power225 kW
EmissionsTier 3
ControllerPowerCommand, PowerCommand PCC2100
Oil capacity22.7 L
Voltage options110/190 V, 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V, 347/600 V
Phasethree phase
Battery cranking750 CCA
Battery voltage24-volt, negative ground V
Coolant capacity30.3 L
Max ambient54 °C
Dimensions (L×W×H)3023×1270×1676 mm
Dry weight2184 kg
Wet weight2234 kg

Engine

Cummins/Onan QSL9-G3 NR3
Oil capacity22.7 L
Coolant capacity30.3 L
Displacement8.9 L
AspirationTurbocharged and CAC
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan QSL9-G3 NR3
ItemSpecCapacityPart #Interval
Fuel filter
Oil filterSingle spin-on, combination full flow and bypass filters
Coolant30.3 L
Oil22.7 L

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
FuelNumber 2 diesel fuelDirect injection fuel system; fuel filter (dual element with water separator) and automatic electric fuel shutoff
Fuelnumber 2 diesel fuelDirect injection fuel system

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the power rating of the Cummins/Onan DQDAA?

The Cummins/Onan DQDAA is rated 250 kW standby (313.0 kVA).

Which engine powers the Cummins/Onan DQDAA?

The Cummins/Onan DQDAA is powered by the Cummins/Onan QSL9-G3 NR3 engine.

Is the Cummins/Onan DQDAA diesel or gas?

The Cummins/Onan DQDAA runs on diesel.

What is the oil capacity of the Cummins/Onan DQDAA?

The Cummins/Onan QSL9-G3 NR3 engine in the Cummins/Onan DQDAA has an oil capacity of 22.7 liters.

What is the cooling system capacity of the Cummins/Onan DQDAA?

The Cummins/Onan DQDAA cooling system holds 30.3 liters (8.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the Cummins/Onan DQDAA?

The Cummins/Onan DQDAA is rated 225 kW prime (281 kVA), against 250 kW standby.

What is the dry weight of the Cummins/Onan DQDAA?

The Cummins/Onan DQDAA has a dry weight of 2184 kg (4814 lb).

What voltages is the Cummins/Onan DQDAA available in?

The Cummins/Onan DQDAA is offered in 110/190 V, 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, three phase-phase.

What battery does the Cummins/Onan DQDAA use?

The Cummins/Onan DQDAA uses 24-volt, negative ground V each, 750 CCA, per the manufacturer specification sheet.

Parts

4
Part #DescriptionQtySystem
PI144D1Alternator Model1Alternator Amazon eBay
UC274CAlternator Model1Alternator Amazon eBay $8681.95
UC274KAlternator Model1Alternator Amazon eBay
V2403-M-E3BGEngine Model1Service part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime25%20.45.4
Prime50%39.710.5
Prime75%56.014.8
Prime100%68.118.0
Standby25%22.35.9
Standby50%43.511.5
Standby75%60.215.9
Standby100%72.719.2

Available documents

Spec sheet — Cummins-DQDAA-250-kW-QSL9-G3-NR3-spec-sheet (Cummins/Onan)Spec sheet — Cummins-DQDAA-DQDAB-DQDAC-spec-sheet (Cummins/Onan)

This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.