DG500 (3-Phase)

Efficient output built to last

The Cat® DG500 gas generator set delivers 500 ekW for standby, demand response and limited-time power applications. Its CG18 engine combines fuel efficient performance with solid construction for dependable long-term operation.

Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.

Equipment Highlights

C18-based engine architecture

The CG18 shares approximately 90% of its engine hardware with the Cat C18 diesel platform, bringing proven components to a natural gas configuration.

Efficient lean-burn operation

A lean air-fuel ratio promotes fuel efficiency, while lower exhaust temperatures help reduce thermal stress on engine components.

Simplified engine design

An in-line six-engine layout uses fewer parts than comparable V10 and V12 configurations, simplifying maintenance and supporting reliable operation.

Strong motor-starting ability

Up to 1414 skVA at 30% voltage dip provides the capability to start large, connected motors during an outage.

Flexible system expansion

Bolt-on attachments provide options for expanding the system as operating needs change.

Specs + Downloads

Specs

Engine Model: Cat® CG18 In-line 6, 4-cycle Natural Gas
Fuel System: Gas mixer, Venturi
Aspiration: Turbocharged - Air-to-Air Aftercooled
Governor Type: Electronic
Displacement: 1106.3 in³
Compression Ratio: 10.5:1
Bore: 5.7 in
Stroke: 7.2 in

Length: 154 in
Width: 73 in
Height: 82 in
Weight: 10721 lb

Frequency: 60 Hz
Natural Gas Rating: 500 ekW
Emissions/Fuel Strategy: U.S. EPA Certified for Stationary Emergency and Non-Emergency Application
RPM: 1800
Fuel Type: Natural Gas
Voltage: 208 - 600 VAC