Specifications
| Fuel | #2D (Min. Cetane #40) |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 750 kW |
| Controller | PowerManager Digital Platform (PM-DCP); PM-PC per; PM-SC system |
| Oil capacity | 31.04 L |
| Alternator | 12 Lead 375 kW 60 Hz Generator |
| Voltage options | 277/480 V, 600 V |
| Phase | 3-phase |
| Rated current | 1128 A |
| Power factor | 0.8 |
| Battery group | 27F |
| Battery cranking | 700 CCA |
| Battery voltage | 12 V |
| Battery quantity | 2 |
| Starting system | 24 V DC |
| Coolant capacity | 83.3 L |
| Max ambient | 50 °C |
Engine
| Oil capacity | 31.04 L |
|---|---|
| Coolant capacity | 83.3 L |
| Displacement | 11.9 L |
| Aspiration | Turbocharged and Aftercooled |
| Rated speed | 2280 rpm |
Maintenance & consumables
for the Generac 12.0 DTA| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry | — | |||
| Fuel filter | Optional | — | |||
| Oil filter | full flow and bypass | — | |||
| Coolant | Pressurized, Closed Recovery | 83.3 liters | — |
Service specifications
7| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Piston speed | 11.4 | m/sec. | 60 Hz |
| Pressure | BMEP | 264 | psi | 60 Hz |
| Pressure | Max. external pressure drop after radiator | 0.5 | in. H2O | |
| Pressure | Maximum recommended back pressure (exhaust) | 5.1 | kPa | at rated output |
| Speed | Coolant flow/min. | 223 | liters/min | 60 Hz |
| Speed | Rated RPM (engine, each) | 2280 | rpm | 60 Hz |
| Temperature | Exhaust temperature at rated output (pre-turbo) | 732 | °C | at rated output |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | #2D (Min. Cetane #40) | Fuel pump lift 40 in. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
1Typical Operational Sequence operation
- A transfer switch in the PM-DCP configuration detects a utility failure and issues a start command.
- The command goes to the PM-SC which issues a start command to the PM-PCs.
- Each generator will start on its own.
- The first generator attaining rated frequency and voltage connects to the common generator bus via the switching mechanism.
- The second generator synchronizes and closes into the bus via the switching mechanism.
- When both gensets are paralleled to the bus, the PM-SC signals transfer switches to transfer to the load in up to 3 programmed steps.
- If an NFPA 10 second start requirement exists, the first unit connects to the bus so a separate emergency transfer switch transfers to the NFPA load.
- If a single generator fails, load shed contacts disconnect selected non critical loads.
- If load conditions are reduced (night time operation), one generator can be programmed off line (optional).
- When utility returns, PM-SC transfers loads back to utility and commands individual PM-PCs to disconnect from the bus.
- Each PM-PC operates its generator for the cool-down period and then issues a shutdown command.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What is the power rating of the Generac GEM750?
The Generac GEM750 is rated 750 kW standby.
What engine is in the Generac GEM750?
The Generac GEM750 is powered by the Generac 12.0 DTA engine.
What kind of fuel does the Generac GEM750 run on?
The Generac GEM750 runs on #2D (Min. Cetane #40).
How much oil does the Generac GEM750 take?
The Generac 12.0 DTA engine in the Generac GEM750 has an oil capacity of 31.04 liters.
What is the coolant capacity of the Generac GEM750?
The Generac GEM750 cooling system holds 83.3 liters (22.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What voltages is the Generac GEM750 available in?
The Generac GEM750 is offered in 277/480 V, 600 V, 3-phase-phase.
What size battery does the Generac GEM750 need?
The Generac GEM750 uses 2 batteryies, 12 V each, 700 CCA, group 27F, per the manufacturer specification sheet. The starting system is 24 V DC.
What alternator comes on the Generac GEM750?
The Generac GEM750 uses a 12 Lead 375 kW 60 Hz Generator alternator.
Repair guides
1Step-by-step procedures compiled from the Generac service manual for this model.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 25% | 68.14 | 18.0 |
| Standby | 50% | 128.7 | 34.0 |
| Standby | 75% | 184.73 | 48.8 |
| Standby | 100% | 238.48 | 63.0 |
Available documents
This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.