Cummins · Cummins Centum Series

Cummins C2750 D6e

2750 kW standby / 2500 kW prime · Diesel · Liquid-cooled

2750 kW Centum Series diesel standby generator with QSK78-G36 engine, launched 2024. PowerCommand 3.3 controller, charged air-cooled intake, single-source Cummins integration for hyperscale data center applications.

Cummins Cummins C2750 D6e generator — specifications and details
Standby power
2750 kW / 2500 kW prime
Voltage options
277/480V, 346/600V, 4160V, 12470V, 13800V
Frequency / Phase
60 Hz · 3-phase
Engine
Cummins QSK78-G36
EPA / Emissions
Tier 2
Data Centersparalleling-arrayManufacturingutility
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Overview#

The Cummins C2750 D6e is a 2750 kW standby diesel generator set from the Centum Series, launched in 2024. Powered by the QSK78-G36 diesel engine, the C2750 D6e extends the Centum platform into near-3 MW territory -- delivering power that would traditionally require a QSK95-based genset, but in the Centum's more compact footprint with charged air-cooled intake and PowerCommand 3.3 controller.

The QSK78 engine family is a purpose-built platform for high-output power generation, slotting between the QSK60 (60L) and QSK95 (95L) in Cummins' engine hierarchy. At 2750 kW, the C2750 D6e provides a step below the 3 MW class that allows engineers to right-size standby capacity without stepping up to the QSK95 platform's size and weight.

Four C2750 D6e units in a paralleling array deliver 11 MW of standby capacity with N+1 redundancy. The Centum's single-source integration, advanced PowerCommand 3.3 controls, and smaller footprint make it particularly attractive for hyperscale data center deployments where generator yard density is a constraint. Fuel consumption runs approximately 193 gallons per hour at full rated load.

Engineering specifications

Fuel system & runtime

Fuel use @ full load
193 GPH
Fuel use @ 75% load
144 GPH
Fuel use @ 50% load
100 GPH

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Estimated runtime

1.3 hours(0.1 days)

Fuel consumption ≈ 148.89 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Service intervals

Manufacturer-recommended intervals for the Cummins C2750 D6e under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 500 hours or 12 months
Air filter
Every 1000 hours
Fuel filter
Every 500 hours
Major overhaul
≈ 40,000 hours

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

ComponentSymptomTypical hoursSeverity
Fuel injection system (MCRS)Injector fault codes, rough running, cylinder imbalance—moderate
Charged air-cooled intake systemCharge air cooler leaks, reduced boost efficiency, intake temperature rise—moderate
Cooling system (high-capacity)Coolant temperature exceedances, system pressure loss under sustained load—severe
PowerCommand 3.3 controllerCommunication faults, sensor input errors, firmware update requirements—minor
Starting system (24V battery bank)Slow crank on large displacement, failed start on infrequently exercised units—minor

Frequently Asked Questions

When was the C2750 D6e launched?
The C2750 D6e was launched in 2024 as part of the Centum Series expansion into the near-3 MW class. It uses the QSK78-G36 engine, which is a purpose-built variant of Cummins' QSK78 platform for the Centum platform.
What engine does the C2750 D6e use?
The C2750 D6e uses the Cummins QSK78-G36 diesel engine. The QSK78 platform is designed specifically for high-output power generation, bridging the gap between the QSK60 and QSK95 engine families.
What are the standby and prime ratings of the C2750 D6e?
Standby rating is 2750 kW (3438 kVA) at 60 Hz, 0.8 power factor. Prime rating is 2500 kW (3125 kVA). Both at 1800 rpm, 60 Hz, three-phase.
How does the C2750 D6e compare to the C3000 D6eb Centum?
Both are Centum Series models using QSK78-variant engines. The C2750 D6e uses the QSK78-G36 while the C3000 D6eb uses the QSK78-G37, a higher-output calibration. The C3000 D6eb delivers an additional 250 kW from the same engine family.
Can OnPoint Generators service the C2750 D6e in Northern California?
Yes. OnPoint Generators provides authorized Cummins service for Centum Series generators across the San Francisco Bay Area and Northern California. The Centum platform uses standard Cummins engines and components, serviced with INSITE diagnostics by our factory-trained technicians.

Compatible equipment

Transfer switches

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