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25 kW Enclosed Gas Generator PTG-25Si

The PTGK-25Si

Powered by an industrial gasoline engine producing 12 kilowatts of continuous prime power.


  • Single phase model
  • Available in 60 Hz or 50 Hz (10 kW @ 50 Hz)
  • Industrial diesel engine CARB and EPA certified Tier 2
  • 1800 RPM operation for long life (1500 RPM @ 50 Hz)
  • Brushless generator with an automatic voltage regulator
  • Mainline set mounted commercial grade circuit breaker
  • Powder coated lightweight aluminum enclosure with sound attenuation
  • High ambient radiator cooled with pusher fan and fan guards
  • Dry type air cleaner, spin on fuel, and oil filters
  • 12VDC starting motor and a 30A 12 VDC battery charging alternator
  • Safety shutdowns for high water temp and low oil pressure
  • Critical Exhaust Silencer
  • Power Tech's advanced PTG series electronic controller
  • Convenient single side service
  • 12VDC fuel pump with bulkheads for easy connection
  • 4 point mounting system with vibration isolators

Engine Specifications

 Type Vertical, Liquid-Cooled, 4 Cylinder, Gasoline
Number of Cylinders 4
Bore & Stroke            mm (in) 79 x 78.4 (3.07 x 3.09)
Total Displacement        L(in3) 1.537 (93.8)
Combustion Type Multiport Fuel Injection
Aspiration Naturally Aspirated
Lubricant (API Classification) SL or Higher
Starting Motor 12V, 1.0 kW
Charging Alternator 12V, 30A


Generator Specifications

Output Voltage 120 (240V Optional)
Power Output  12,000 W
Amperage 100 @ 120VAC (50A @ 240VAC)
Fuel Consumption 1.65 GPH @ Full Load, 0.88 GPH @ Half Load
Weight 757 lbs



2 year /3000-hour limited warranty.  Click here for more information.