Overview#
The Kohler 400RZXD is a 304-kilowatt LPG industrial standby generator in an open-frame (skid-mounted) configuration. Rated at 240-304 kW standby depending on voltage, it uses a PSI/Doosan engine paired with a brushless permanent-magnet pilot exciter alternator at 1800 RPM. The open-frame design is intended for indoor mechanical rooms or buildings with dedicated generator enclosures.
Gaseous vs diesel at 304 kW#
At this capacity, gaseous generators eliminate on-site fuel storage requirements and SPCC compliance. LPG provides clean combustion with lower emissions than diesel and avoids fuel degradation issues. At this power level, propane consumption is significant, so tank sizing and delivery contracts become critical planning considerations for extended outage scenarios.
Our service experience#
PowerGen provides installation, maintenance, and emergency service for Kohler gaseous generators throughout Northern California. The PSI/Doosan engine platform in the RZX series handles the 300+ kW class reliably, and we structure PM programs around annual ignition, fuel system, and coolant inspections.



