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Generac MMG320 Generator Set

The Generac MMG320 is a 278 kW (348 kVA) diesel standby generator set powered by a John Deere RG6090HF485 engine. It is available at 120/208 V and 277/480 V, 3-phase and 60 Hz. Starting uses 2 batteries rated 1000 CCA. The set measures 3960×1520×2290 mm (155.9×59.8×90.2 in), weighs about 3646 kg (8038 lb) and produces 68 dBA at 7.01 m. An integrated tank holds 1737.3 L (458.9 gal), roughly 24 hours of runtime.

278 kW
Standby
9.0 L
Displacement
0
Document types

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Specifications

Fueldiesel
Frequency60.0 Hz
Standby power278 kW
Standby kVA348
Prime power256 kW
EmissionsTier III
ControllerMicroprocessor-based controller
Voltage options120/208 V, 277/480 V
Phase3
Circuit breaker1200 A
Battery cranking1000 CCA
Battery quantity2
Max ambient48.89 °C
Dimensions (L×W×H)3960×1520×2290 mm
Dry weight3646 kg
Sound level68.0 dBA @ 7.01 m
Fuel tank1737.3 L
Tank runtime24 hr

Engine

John Deere RG6090HF485
Displacement9.0 L
Aspirationturbocharged
Rated speed1800 rpm

Common questions

What is the power rating of the Generac MMG320?

The Generac MMG320 is rated 278 kW standby (348.0 kVA).

What engine does the Generac MMG320 use?

The Generac MMG320 is powered by the John Deere RG6090HF485 engine.

What fuel does the Generac MMG320 use?

The Generac MMG320 runs on diesel.

Fuel consumption

RatingLoadL/hgal/h
Prime50%34.19.0
Prime75%50.713.4
Prime100%67.817.9

Available documents