Overview#
The Kohler 400REZXD is a 400-kilowatt LPG industrial standby generator in an enclosed configuration. Rated at 295-400 kW standby depending on voltage, it uses a PSI/Doosan engine paired with a brushless permanent-magnet pilot exciter alternator at 1800 RPM. This unit is EPA certified for both stationary and mobile emergency and non-emergency applications, with hurricane-rated enclosure options featuring 186 mph wind load rating.
Gaseous vs diesel at 400 kW#
At 400 kW, gaseous generators offer a viable alternative to diesel for facilities that want to avoid fuel storage and SPCC compliance. LPG provides clean combustion with lower emissions, but at this power level propane consumption is high. Tank sizing, delivery contracts, and fuel availability during regional emergencies are critical planning factors. Facilities with reliable propane infrastructure benefit from the lower maintenance burden compared to diesel at this scale.
Our service experience#
PowerGen provides installation, maintenance, and emergency service for Kohler gaseous generators throughout Northern California. The PSI/Doosan engine platform in the 400 kW class is purpose-built for heavy commercial duty, and we structure PM programs around annual ignition, fuel system, and coolant inspections with attention to the pilot exciter alternator and higher-capacity fuel delivery components.
