Overview#
The Cummins C1750 N6cb is a 1750 kW (2188 kVA) standby natural gas generator set powered by the HSK78G -- a 78-liter, turbocharged and aftercooled spark-ignited gas engine. The HSK78G is Cummins' flagship gas engine platform, purpose-built for high-capacity standby and prime power gas applications. The unit runs on natural gas or propane vapor and is equipped with PowerCommand controls providing isochronous governing and AmpSentry alternator protection.
At 1750 kW, the C1750 N6cb approaches 2-MW single-unit gas capacity. It is deployed in large hospitals, hyperscale data centers, major campus environments, and heavy industrial facilities where the highest available gas-fired backup power is required without the fuel storage, permitting, and environmental compliance burden of diesel generators at this scale.
Technical Specifications#
| Parameter | Value |
|---|---|
| Standby Rating | 1750 kW (2188 kVA) |
| Frequency | 60 Hz |
| Power Factor | 0.8 |
| Engine Model | HSK78G |
| Fuel Type | Natural gas / LPG |
| Cooling | Liquid |
| Aspiration | Turbocharged and aftercooled |
| Rated Speed | 1800 rpm |
| NG Fuel Consumption (Full Load) | ~17,500 CFH |
Our Service Experience#
The HSK78G is Cummins' newest and most advanced large-frame gas engine. It is a purpose-built gas platform (not a diesel conversion), which gives it advantages in combustion efficiency and emissions performance. Service requires factory-trained technicians with specialized tooling and experience on the HSK78G platform specifically. Spark plug replacement is a multi-hour planned maintenance event.
Gas supply infrastructure at 1750 kW is a significant engineering project. At approximately 17,500 CFH, the facility requires utility-grade gas service with dedicated industrial metering, large-diameter supply piping (typically 6-inch minimum), and industrial-grade pressure regulation. Gas utility coordination is essential during early project planning.
Frequently Asked Questions#
What engine does the C1750 N6cb use? The Cummins HSK78G -- a 78-liter, purpose-built, turbocharged and aftercooled spark-ignited gas engine rated for 1750 kW standby at 1800 rpm.
What is the standby rating of the C1750 N6cb? 1750 kW (2188 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 OnPoint Generators service the C1750 N6cb in Northern California? Yes. OnPoint Generators maintains factory-trained staff for HSK78G gas engine service across the San Francisco Bay Area, Silicon Valley, and Northern California.
