Gas generator sets
DG400 (3-Phase)
The Cat® DG400 gas generator set delivers 400 ekW for standby, demand response and limited-time power applications. Its lean-burn CG18 engine combines fuel efficiency with durable construction for steady operation over the long term.
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High power density
- The in-line six-engine CG18 delivers greater output from a smaller engine configuration, allowing more power to fit within a smaller space.
Efficient CG18 engine
- Lean-burn operation promotes fuel efficiency, while robust high-speed block construction contributes to prolonged engine life.
Flexible Cat<sup class="cf-reg">®</sup> ECS controls
- Expansion modules and customizable programming configure generator operation around individual installation needs.
Strong motor-starting ability
- Large connected motors can start during an outage, helping accommodate demanding electrical equipment.
Durable alternator insulation
- Class H insulation provides a high level of protection to promote alternator durability over its service life.
Use installation space more effectively
Lower your owning and operating costs
Adapt controls to your operation
| Frequency | 60 Hz |
|---|---|
| Emissions/Fuel Strategy | U.S. EPA Certified for Stationary Emergency Application and Non-Emergency Applications |
| RPM | 1800 |
| Voltage | 208 - 600 VAC |
| Natural Gas Rating | 400 ekW |
| Fuel Type | Natural Gas |
| 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
