Overview#
The Cummins C1100 N6 is an 1100 kW (1375 kVA) standby natural gas generator set powered by the QSK60G -- a 60-liter, turbocharged and aftercooled spark-ignited gas engine. This is the higher-output configuration of the QSK60G platform, rated 100 kW above the C1000 N6b. The unit runs on natural gas or propane vapor and is equipped with PowerCommand controls providing isochronous governing and AmpSentry alternator protection.
The C1100 N6 serves megawatt-class standby applications in hospitals, data centers, large campus environments, and industrial facilities. The additional 100 kW over the C1000 N6b provides margin for load growth or full-facility backup where 1000 kW falls slightly short.
Technical Specifications#
| Parameter | Value |
|---|---|
| Standby Rating | 1100 kW (1375 kVA) |
| Frequency | 60 Hz |
| Power Factor | 0.8 |
| Engine Model | QSK60G |
| Fuel Type | Natural gas / LPG |
| Cooling | Liquid |
| Aspiration | Turbocharged and aftercooled |
| Rated Speed | 1800 rpm |
| NG Fuel Consumption (Full Load) | ~11,000 CFH |
Our Service Experience#
The QSK60G at the 1100 kW rating operates near the top of its output range, making air-fuel mixture calibration and gas pressure regulation particularly critical. Any variation in gas supply pressure or engine tuning is more pronounced at maximum output. We inspect turbocharger condition, boost pressure, and exhaust backpressure at every annual service.
Gas supply infrastructure for 1100 kW demands utility-grade service -- typically 4-inch or larger supply piping, dedicated industrial metering, and high-capacity pressure regulation. At approximately 11,000 CFH full-load consumption, coordination with the local gas utility during project planning is essential to ensure adequate supply capacity.
Frequently Asked Questions#
What engine does the C1100 N6 use? The Cummins QSK60G -- a 60-liter, turbocharged and aftercooled spark-ignited gas engine. Same platform as the C1000 N6b, rated at 1100 kW through calibration differences.
What is the standby rating of the C1100 N6? 1100 kW (1375 kVA) at 60 Hz, 0.8 power factor. Emergency Standby Power (ESP) rating.
What are the service intervals? Oil and filter at 500 hours or 12 months. Air filter at 500 hours. Spark plugs at 1,000 hours. Major overhaul at 30,000 hours.
Can PowerGen service the C1100 N6 in Northern California? Yes. PowerGen maintains factory-trained staff for QSK60G gas engine service across the San Francisco Bay Area, Silicon Valley, and Northern California.
