HomeGeneracGenerac MD400

Generac MD400 Generator Set

The Generac MD400 is a 400 kW (500 kVA) Diesel standby generator set powered by a Perkins 12.5L engine. It is available at 277/480 V and 346/600 V, 3-phase, 60 Hz and rated 602 A. It holds about 38 L (10.0 gal) of oil and 49.2 L (13.0 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 2 group-8 batteries rated 1155 CCA at 12 V. The set measures 3493×1463×1721 mm (137.5×57.6×67.8 in) and weighs about 3016 kg (6649 lb).

400 kW
Standby
12.5 L
Displacement
38.0 L
Oil capacity
2
Document types

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power400 kW
Standby kVA500
Prime power360 kW
EmissionsEPA Certified Stationary Emergency
ControllerDigital G-200
Oil capacity38.0 L
Alternator520 mm
Voltage options277/480 V, 346/600 V
PhaseThree-Phase
Rated current602 A
Power factor0.8
Circuit breaker602 A
Battery group8D
Battery cranking1155 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity49.2 L
Max ambient40 °C
Dimensions (L×W×H)3493×1463×1721 mm
Dry weight3016 kg

Engine

Perkins 12.5L
Oil capacity38.0 L
Coolant capacity13.0 L
Displacement12.5 L
AspirationTurbocharged/Aftercooled
Rated speed1656 rpm

Common questions

What is the power rating of the Generac MD400?

The Generac MD400 is rated 400 kW standby (500.0 kVA).

What engine does the Generac MD400 use?

The Generac MD400 is powered by the Perkins 12.5L engine.

Is the Generac MD400 diesel or gas?

The Generac MD400 runs on Diesel.

What is the oil capacity of the Generac MD400?

The Perkins 12.5L engine in the Generac MD400 has an oil capacity of 38.0 liters.

Which alternator is fitted to the Generac MD400?

The Generac MD400 uses a 520 mm alternator.

Fuel consumption

RatingLoadL/hgal/h
Standby105.427.8
Standby25%37.19.8
Standby50%63.216.7
Standby75%87.423.1
Standby100%27.8105.4

Available documents

Spec sheet — md400-400kw-diesel-generator-mps-specsheet (Generac)Reference — 0196220sby-a-md400-12-5l-perkins-1 (Generac)