HomeCummins/OnanCummins/Onan GFJC

Cummins/Onan GFJC Generator Set

The Cummins/Onan GFJC is a 550 kW (688 kVA) Natural Gas standby generator set powered by a Cummins/Onan GTA38 engine. It is available at 120/208 V, 240/416 V, 127/220 V, 254/440 V, 139/240 V, 277/480 V, 120/240 V and 347/600 V, Three Phase-phase and 60 Hz. It holds about 129 L (34.1 gal) of oil and 454 L (119.9 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses group-8 battery rated 1800 CCA at 24 V. The set measures 4775×2286×2743 mm (188.0×90.0×108.0 in) and weighs about 8503 kg (18746 lb).

550 kW
Standby
37.7 L
Displacement
129.0 L
Oil capacity
1
Document types

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

Specifications

FuelNatural Gas
Frequency60.0 Hz
Standby power550 kW
Standby kVA688
Prime power560 kW
EmissionsEPA SI NSPS Compliant Capable
ControllerPowerCommand, PowerCommand 1.1
Oil capacity129.0 L
Voltage options120/208 V, 240/416 V, 127/220 V, 254/440 V, 139/240 V, 277/480 V, 120/240 V, 347/600 V
PhaseThree Phase
Power factor0.8
Battery group8D
Battery cranking1800 CCA
Battery voltage24 V
Coolant capacity454 L
Max ambient40 °C
Dimensions (L×W×H)4775×2286×2743 mm
Dry weight8503 kg

Engine

Cummins/Onan GTA38
Oil capacity129.0 L
Coolant capacity272.0 L
Displacement37.7 L
AspirationTurbocharged & Aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan GTA38
ItemSpecCapacityPart #Interval
Air filter find
Fuel filter find
Oil filter find
Belt find
Coolant
Coolant filter find
Oil4.0 gal

Common questions

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

The Cummins/Onan GFJC is rated 550 kW standby (688.0 kVA).

What engine does the Cummins/Onan GFJC use?

The Cummins/Onan GFJC is powered by the Cummins/Onan GTA38 engine.

What fuel does the Cummins/Onan GFJC use?

The Cummins/Onan GFJC runs on Natural Gas.

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

The Cummins/Onan GTA38 engine in the Cummins/Onan GFJC has an oil capacity of 129.0 liters.

Fuel consumption

RatingLoadL/hgal/h
Prime0%7848.0
Prime1%8850.0
Standby0%
Standby0%
Standby1%

Available documents

Spec sheet — Cummins-690-GFJC GTA38 (Cummins/Onan)Spec sheet — GTA38G3GFJC (Cummins/Onan)