Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 900 kW |
| Standby kVA | 1125 |
| Prime power | 810 kW |
| Emissions | Tier 2 |
| Controller | InteliGen NT Display |
| Oil capacity | 180.0 L |
| Alternator | 1000kW, 125°C, NEMA H (4-pole, Class H insulation) |
| Voltage options | 120/208 V, 120/240 V, 277/480 V, 347/600 V |
| Phase | Three-Phase |
| Power factor | 0.8 |
| Battery group | 8D |
| Battery voltage | 12 VDC V |
| Battery quantity | 2 |
| Coolant capacity | 287.6 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 4420×2261×2489 mm |
| Dry weight | 9473 kg |
Engine
| Oil capacity | 200.0 L |
|---|---|
| Coolant capacity | 288.0 L |
| Displacement | 37.11 L |
| Aspiration | Turbocharged |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Mitsubishi S12H-Y2PTAW-1| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | find | |||
| Fuel filter | ×4 | — | find | ||
| Oil filter | Cartridge | ×5 | GM13942 | Amazon eBay $25.00 PartsGeek | |
| Belt | — | find | |||
| Coolant | Demineralized water or distilled water, 40-60% anti-freeze based on a theoretical temperature that is 9-18°F (5-10°C) below the lowest temperature expected in the area | — | |||
| Oil | 200.0 | — | 30 hr |
Common questions
What is the power rating of the Generac MD900?
The Generac MD900 is rated 900 kW standby (1125.0 kVA).
What engine does the Generac MD900 use?
The Generac MD900 is powered by the Mitsubishi S12H-Y2PTAW-1 engine.
What fuel does the Generac MD900 use?
The Generac MD900 runs on Diesel.
What is the oil capacity of the Generac MD900?
The Mitsubishi S12H-Y2PTAW-1 engine in the Generac MD900 has an oil capacity of 200.0 liters.
What alternator does the Generac MD900 use?
The Generac MD900 uses a 1000kW, 125°C, NEMA H alternator. It has 4 poles. Insulation class H.
Parts
15| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 01865 | Fuel/Water Filtering System | Fuel filter | PartsGeek | |
| 18650 | Oil filter | PartsGeek | ||
| 01858 | Engine Oil Recommendations | Service part / kit | PartsGeek | |
| 01859 | Serial Number Locations | Service part / kit | PartsGeek | |
| 01860 | GFCI Receptacle and Interior Light Timer | Service part / kit | PartsGeek | |
| 01861 | Component Locations - Left Side | Service part / kit | PartsGeek | |
| 01862 | Component Locations - Right Side | Service part / kit | PartsGeek | |
| 01863 | Control Panel | Service part / kit | PartsGeek | |
| 01864 | Digital Controller | Service part / kit | PartsGeek | |
| 01866 | Parallel Setup and Operation | Service part / kit | PartsGeek | |
| 01867 | Generator Output Connections | Service part / kit | PartsGeek | |
| 01868 | Voltage Regulator | Service part / kit | PartsGeek | |
| 01870 | Transfer switch operation manual | Service part / kit | PartsGeek | |
| 01871 | Maintenance schedule and basic maintenance tasks for MCG1000MT2 | Service part / kit | PartsGeek | |
| 01873 | Maintenance schedule and extended maintenance tasks for MCG1000MT2 | Service part / kit | PartsGeek |
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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 25% | 92.0 | 24.3 |
| Standby | 50% | 160.1 | 42.3 |
| Standby | 75% | 233.2 | 61.6 |
| Standby | 100% | 294.9 | 77.9 |
Available documents
Spec sheet — Generac 900kW MD900 Diesel Generator 37.1L (Generac)Spec sheet — md900-0l1427a (Generac)