Gas generator sets
DG500 (3-Phase)
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.
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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.
Rely on lasting performance
Count on efficient operation
Start large motor loads confidently
| 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 |
| 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 |
Exhaust
- Dry exhaust manifolds, insulated and shielded
Fuel System
- Gas train with Zero Pressure regulator
- ECU controlled shutdown solenoid
- Airfuel Ratio Control, Venturi type Air-Gas mixer, throttle controlled valve
Controls
- CAT® ECS 100
- Integrated Voltage Regulator (IVR)
Telematics
- PL444 Product link 4G LTE Telematics
Generator
- Anti-condensation space heater
- SR5
Governing
- Electronic Governing
Starting/Charging
- 24V starting motors
General
- Paint - Caterpillar Yellow except rails are gloss black
- Operation and maintenance manuals
- Parts book
Need installed dimensions with enclosure and tank? See Model Configurations
