Specifications
| Fuel | Natural Gas, Propane (HD-5) |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 250 kW |
| Standby kVA | 562 |
| Prime power | 280 kW |
| Emissions | EPA SI NSPS Compliant Capable |
| Controller | Detector, PowerCommand 1.1, PowerCommand digital electronic |
| Oil capacity | 5.5 L |
| Alternator | ADS308E (4-pole, Class Class H insulation) |
| Voltage options | 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V, 347/600 V |
| Phase | Three Phase Reconnectable, Single Phase Non-Reconnectable, Three Phase Non-Reconnectable |
| Rated current | [1734, 1640, 1503, 949, 867, 820, 752, 601] A |
| Power factor | 0.8 |
| Circuit breaker | 80 A |
| Battery group | 8D |
| Battery cranking | 660 CCA |
| Battery voltage | 24 V |
| Battery quantity | 1 |
| Coolant capacity | 170 L |
| Max ambient | 40 °C |
| Dimensions (L×W×H) | 4267×2413×2489 mm |
| Dry weight | 6915 kg |
| Sound level | 79.0 dBA @ 7 m |
| Fuel tank | 659.0 L |
| Tank runtime | 1.31 hr |
Engine
| Oil capacity | 5.5 L |
|---|---|
| Coolant capacity | 45.0 L |
| Displacement | 28.0 L |
| Aspiration | Turbocharged & Aftercooled |
| Rated speed | 1500 rpm |
Filters for the Cummins/Onan GTA28
1Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P551670 | Lube Filter, Spin-On Full Flow | CUMMINS 298670, CUMMINS 299670, NAPA 1970, CARBOCOL 0026 | FridayParts $26.68 |
Maintenance & consumables
for the Cummins/Onan GTA28| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | IMPCO High Altitude, Low Pressure Gas System (Std) | — | |||
| Fuel filter | — | ||||
| Oil filter | Full Flow Filter Capacity – Replaceable Element Type - U.S. gal. | — | |||
| Battery | 24 Volt, Cold Cranking Amperes – CCA 1800, Reserve Capacity - min. 640 | — | |||
| Belt | — | ||||
| Coolant | 170.0 | — | |||
| Coolant filter | — | ||||
| Oil | Multi-viscosity or straight weight single viscosity NATURAL GAS ENGINE OIL that meets Mil-2104A(CB), Mil-2104B (CC), Mil-2104C (CD/SC), CE and CF-4 specification. Ash Content between .15 and .85 of one percent. | 29.7 gal | — | ||
| Spark plug | — |
Common questions
What size generator is the Cummins/Onan GFGA?
The Cummins/Onan GFGA is rated 250 kW standby (562.0 kVA).
Which engine powers the Cummins/Onan GFGA?
The Cummins/Onan GFGA is powered by the Cummins/Onan GTA28 engine.
What fuel type does the Cummins/Onan GFGA take?
The Cummins/Onan GFGA runs on Natural Gas, Propane (HD-5).
What's the oil capacity on a Cummins/Onan GFGA?
The Cummins/Onan GTA28 engine in the Cummins/Onan GFGA has an oil capacity of 5.5 liters.
What is the cooling system capacity of the Cummins/Onan GFGA?
The Cummins/Onan GFGA cooling system holds 170 liters (44.9 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan GFGA?
The Cummins/Onan GFGA is rated 280 kW prime (562 kVA), against 250 kW standby.
How loud is the Cummins/Onan GFGA?
The Cummins/Onan GFGA is rated at 79.0 dBA at 7 m, per the manufacturer specification sheet.
How much does the Cummins/Onan GFGA weigh?
The Cummins/Onan GFGA has a dry weight of 6915 kg (15244 lb).
What size fuel tank does the Cummins/Onan GFGA have?
The Cummins/Onan GFGA has a 659 liter (174 US gallon) fuel tank, giving about 1.31 hours of runtime.
What voltages is the Cummins/Onan GFGA available in?
The Cummins/Onan GFGA is offered in 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, Three Phase Reconnectable, Single Phase Non-Reconnectable, Three Phase Non-Reconnectable-phase.
How many cold cranking amps does the Cummins/Onan GFGA require?
The Cummins/Onan GFGA uses 1 battery, 24 V each, 660 CCA, group 8D, per the manufacturer specification sheet.
Which alternator is fitted to the Cummins/Onan GFGA?
The Cummins/Onan GFGA uses a ADS308E alternator. It has 4 poles. Insulation class Class H.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 100% | 795.0 | 210.0 |
| Standby | 50% | 609.0 | 73.0 |
| Standby | 75% | 810.0 | 170.0 |
| Standby | 100% | 163.0 | 43.0 |
Available documents
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.