Standard Model390mmVoltage Regulator TypeFull Digital
Poles4Number of Sensed Phases3
Field TypeRevolvingRegulation Accuracy (Steady State)+/- 0.25%
Insulation Class - RotorH
Insulation Class - StatorH
Total Harmonic Distortion<5%Engine Governing
Telephone Interference Factor (TIF)<50GovernorElectronic
Standard ExcitationBrush TypeFrequency Regulation (Steady State)+/- 0.25%
BearingsSealed Ball
CouplingFlexibile Disc
Load Capacity - Standby100%
Prototype Short Circuit TestYes
CODES AND STANDARDS COMPLIANCE (WHERE APPLICABLE)
NFPA 99BS5514
NFPA 110SAE J1349
ISO 8528-5DIN6271
ISO 1708A.5IEEE C62.41 TESTING
ISO 3046NEMA ICS 1
UL2200
Rating Definitions:
Standby – Applicable for a varying emergency load for the duration of a utility power outage with no overload capability. (Max. load factor = 70%)
* Refer to "Emissions Data Sheet" for maximum fuel flow for EPA and SCAQMD permitting purposes.
QT025A 25kW
3 of 5
COOLING
Air Flow (inlet air combustion and radiator)ft3/min (m3/min)1500 (42.48)
System Coolant CapacityGal (Liters)2.5 (9.46)
Heat Rejection to CoolantBTU/hr95,000
Max. Operating Air Temp on RadiatorºF (ºC)122 (50)
Max. Ambient TemperatureºF (ºC)104 (40)
Maximum Radiator Backpressurein H2O1.5
COMBUSTION AIR REQUIREMENTS
STANDBY
Flow at Rated Powercfm70
ENGINE
STANDBY
Rated Engine Speedrpm1800
Horsepower at Rated kW**hp40
Piston Speedft/min1182
BMEPpsi120
** Refer to “Emissions Data Sheet” for maximum bHP for EPA and SCAQMD permitting purposes.
STANDBY
EXHAUST
STANDBY
Exhaust Flow (Rated Output)cfm (m3/min)220 (6.2)
Maximum Recommended Back PressureinHg1.5
Exhaust Temp (Rated Output)ºF (ºC)975 (524)
Exhaust Outlet Sizein2.5
Deration – Operational characteristics consider maximum ambient conditions. Derate factors may apply under atypical site conditions. Please consult a Generac Power Systems Industrial Dealer for
additional details. All performance ratings in accordance with ISO3046, BS5514, ISO8528 and DIN6271 standards.
QT025A standard features and options
GENERATOR SET
QT025A 25kW
4 of 5
Genset Vibration IsolationStd
Extended warrantyOpt
Gen-Link™ Communications SoftwareOpt
Steel EnclosureOpt
Aluminum EnclosureOpt
ENGINE SYSTEM
General
Oil Drain ExtensionStd
Critical Exhaust SilencerStd
Air cleanerStd
Fan guardStd
Radiator duct adapterStd
Fuel System
Fuel lockoff solenoidStd
Secondary Fuel RegulatorStd
Flexible fuel linesStd
Cooling System
120VAC Coolant Heater
Closed Coolant Recovery System
UV/Ozone resistant hoses
Factory-Installed Radiator
Radiator Drain Extension
Engine Electrical System
Battery charging alternatorStd
Battery cablesStd
Battery trayStd
Solenoid activated starter motorStd
10A UL float/equalize battery chargerStd
Rubber-booted engine electrical connectionsStd
ALTERNATOR SYSTEM
UL2200 GENprotect™Std
Main Line Circuit BreakerStd
Std
Std
Std
Std
Std
CONTROL SYSTEM
Control Panel
Digital H Control Panel - Dual 4x20 DisplayStd
Programmable Crank LimiterStd
21-Light Remote AnnunciatorOpt
Remote Relay Panel (8 or 16)Opt
7-Day Programmable ExerciserStd
Special Applications Programmable PLCStd
RS-232 CommunicationsStd
RS-485 CommunicationsStd
All-Phase Sensing DVRStd
Full System StatusStd
Utility Monitoring (Req. H-Transfer Switch)Std
2-Wire Start CompatibleStd
Power Output (kW)Std
Power FactorStd
Reactive PowerStd
All phase AC VoltageStd
All phase CurrentsStd
Oil PressureStd
Coolant TemperatureStd
Coolant LevelStd
Fuel PressureStd
Engine SpeedStd
Battery VoltageStd
FrequencyStd
Isochronous Governor ControlStd
-40deg C - 70deg C OperationStd
Waterproof Plug-In ConnectorsStd
Audible Alarms and ShutdownsStd
Not in Auto (Flashing Light)Std
Auto/Off/Manual SwitchStd
E-Stop (Red Mushroom-Type)Std
NFPA 110 Level I and II (Programmable) Std
Remote Communication - RS232Std
Alarms (Programmable Tolerances, Pre-Alarms and Shutdowns)
Low Fuel Pressure Std
*All measurements are approximate and *All measurements are approximate and for estimation purposes only. Sound levels measured at 23ft (7m) under normal operation and do not account for
ambient site conditions. estimation purposes only. Sound levels measured at 23ft (7m) and does not account for ambient site conditions.
YOUR FACTORY RECOGNIZED GENERAC INDUSTRIAL DEALER
Specification characteristics may change without notice. Dimensions and weights are for preliminary purposes only. Please consult a Generac Power Systems Industrial Dealer for detailed installation drawings.
Generac Power Systems, Inc. • S45 W29290 HWY. 59, Waukesha, WI 53189 • generac.com