Cummins · Cummins Centum Series

Cummins C1750 D6e

1750 kW standby / 1590 kW prime · Diesel · Liquid-cooled

1750 kW Centum Series diesel standby generator with QSK50 engine, launched 2024. PowerCommand 3.3 controller, charged air-cooled intake, smaller footprint, single-source Cummins integration for data center applications.

Cummins Cummins C1750 D6e generator — specifications and details
Standby power
1750 kW / 1590 kW prime
Voltage options
277/480V, 346/600V, 4160V, 12470V, 13800V
Frequency / Phase
60 Hz · 3-phase
Engine
Cummins QSK50
EPA / Emissions
Tier 2
Data Centersparalleling-arrayCommercialManufacturing
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Overview#

The Cummins C1750 D6e is a 1750 kW standby diesel generator set from the Centum Series, launched in 2024 as part of Cummins' expansion of this premium platform. Powered by the QSK50 diesel engine with the PowerCommand 3.3 controller, the C1750 D6e bridges the gap between the QSK38-based Centum models (1250-1500 kW) and the larger QSK78-based units (2750-3000 kW).

The Centum Series is purpose-built for data center and mission-critical applications. Its smaller footprint compared to traditional D6 gensets allows higher power density in generator yards. Charged air-cooled intake maintains consistent performance across ambient conditions, and the PowerCommand 3.3 controller provides advanced paralleling, load management, and BMS integration via Modbus, BACnet, and SNMP protocols.

At 1750 kW, the C1750 D6e is a practical building block for Tier III and Tier IV data center paralleling arrays. Six units deliver 10.5 MW of total standby capacity with N+1 redundancy at the 5-unit load level. Full single-source Cummins integration simplifies procurement and service. Fuel consumption runs approximately 123 gallons per hour at full rated load.

Engineering specifications

Fuel system & runtime

Fuel use @ full load
123 GPH
Fuel use @ 75% load
92 GPH
Fuel use @ 50% load
64 GPH

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Estimated runtime

2.1 hours(0.1 days)

Fuel consumption ≈ 94.89 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 C1750 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, power imbalance—moderate
Charged air-cooled intake systemCharge air cooler leaks, reduced boost efficiency, intake temperature rise—moderate
Cooling systemCoolant temperature exceedances, system pressure loss—severe
PowerCommand 3.3 controllerCommunication faults, sensor input errors, firmware update requirements—minor
Starting system (24V battery bank)Slow crank, failed start on infrequently exercised units—minor

Frequently Asked Questions

When was the C1750 D6e launched?
The C1750 D6e was launched in 2024 as part of Cummins' Centum Series expansion, extending the platform's power range with the QSK50 engine to bridge the gap between the QSK38-based models (1250-1500 kW) and the larger QSK78-based Centum units.
What engine does the C1750 D6e use?
The C1750 D6e uses the Cummins QSK50 diesel engine with MCRS fuel injection. The QSK50 provides the displacement needed for the 1750-2000 kW range within the Centum platform's compact footprint.
What are the standby and prime ratings of the C1750 D6e?
Standby rating is 1750 kW (2188 kVA) at 60 Hz, 0.8 power factor. Prime rating is 1590 kW (1988 kVA). Both at 1800 rpm, 60 Hz, three-phase.
What are the service intervals for the C1750 D6e?
Oil and filter changes are due at 500 hours or 12 months. Air filter replacement at 1,000-hour intervals. Fuel filter at 500 hours. Coolant flush at 6,000 hours. Major overhaul interval is 40,000 hours under standard standby duty conditions.
Can PowerGen service the C1750 D6e in Northern California?
Yes. PowerGen 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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