Generac Power Systems Liquid Cooled Gas Engine Generator Sets Qt027 Users Manual
QT027 to the manual 39b04bf3-c6b1-4d06-9a7f-a69b689cb082
2015-02-09
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QT027 Liquid Cooled Gas Engine Generator Sets Standby Power Rating 27 kW 60 Hz GENERAC 2.4L ENGINE Naturally Aspirated Gaseous Fueled Meets 2009 EPA Emission Regulations STANDARD EQUIPMENT • • • • • • • • • • • • All input connections in one single area High coolant temperature shutdown Low oil pressure shutdown Low coolant level automatic shutdown Overspeed automatic shutdown Crank timer Exercise timer Oil drain extension Cool flow radiator Closed coolant recovery system UV/Ozone resistant hoses Watertight state of the art electrical connectors • • • • • • • • • • Mainline circuit breaker Radiator drain extension Battery charge alternator 2 Amp static battery charger Battery cables Battery rack Fan and belt guards Isochronous governor Flex fuel line Hour meter FEATURES • • • • • • • • • Innovative design and fully prototype tested UL2200 Listed Solid state frequency compensated voltage regulator Dynamic and static battery charger Sound attenuated acoustically designed enclosure Quiet test for low noise level exercise Acoustically designed engine cooling system High flow low noise factory engineered exhaust system State of the art digital control system with R100 digital control panel • Watertight electrical connectors • Rodent proof construction • High efficiency, low distortion Generac designed alternator • Vibration isolated from mounting base • Matching Generac transfer switches engineered and tested to work as a system • All components easily accessible for maintenance • Electrostatically applied powder paint APPLICATION & ENGINEERING DATA QT027 GENERATOR SPECIFICATIONS ENGINE SPECIFICATIONS TYPE............................................................................................................Synchronous ROTOR INSULATION...........................................................................................Class H STATOR INSULATION..........................................................................................Class H TOTAL HARMONIC DISTORTION............................................................................ <5% TELEPHONE INTERFERENCE FACTOR (TIF).........................................................<50 ALTERNATOR OUTPUT LEADS 3 PHASE............................................................ 4 wire BEARINGS..................................................................................................... Sealed Ball COUPLING................................................................................................... Flexible Disc LOAD CAPACITY (STANDBY RATING)................................................................. 27 kW EXCITATION SYSTEM............................................................................................ Direct MAKE................................................................................................................. Generac MODEL..................................................................................................................Inline 4 CYLINDERS....................................................................................................................4 DISPLACEMENT..................................................................................................2.4 Liter BORE.........................................................................................................................3.41 STROKE.....................................................................................................................3.94 COMPRESSION RATIO............................................................................................8.5:1 INTAKE AIR SYSTEM........................................................................ Naturally Aspirated VALVE SEATS...................................................................................................Hardened LIFTER TYPE.....................................................................................................Hydraulic NOTE: Generator rating and performance in accordance with ISO8528-5, BS5514, SAE J1349, ISO3046, and DIN6271 standards. VOLTAGE REGULATOR TYPE.................................................................................................................Electronic SENSING.................................................................................................... Single Phase REGULATION........................................................................................................... ± 1% FEATURES................................................................................................ V/F Adjustable Adjustable Voltage and Gain LED Indicators GENERATOR FEATURES Revolving field heavy duty generator Directly connected to the engine Operating temperature rise 120 °C above a 40 °C ambient Insulation is Class H rated at 150 °C rise All models are fully prototyped tested CONTROL PANEL FEATURES SEVEN LED INDICATOR LIGHTS ADDITIONAL FUNCTIONS • System ready • Utility sensing • Low fuel pressure • Delay on utility failure for engine start • Low battery • Engine warm-up before transfer • Low oil pressure • Delay to retransfer to utility • High coolant temp/low coolant temp • Engine cooldown timer • Overspeed • Exerciser not set • Overcrank • Hour meter INTERNAL FUNCTIONS: • 3 position switch (auto, off and manual) • 2 wire start for any transfer switch • Communicates with the Generac RTS transfer switch • Built-in 7 day exerciser • Selectable engine speed at exercise • Governor controller is built into the master control board • Temperature range -40 °C to 70 °C GOVERNOR SPECIFICATIONS TYPE.................................................................................................................Electronic FREQUENCY REGULATION........................................................................ Isochronous STEADY STATE REGULATION...............................................................................± 0.25 ADJUSTMENTS FOR: Speed......................................................................................................Yes Droop.......................................................................................................Yes ENGINE LUBRICATION SYSTEM OIL PUMP.................................................................................................................Gear OIL FILTER.............................................................................. Full flow spin-on cartridge CRANKCASE CAPACITY....................................................................................4 Quarts ENGINE COOLING SYSTEM TYPE......................................................................................................................Closed WATER PUMP..................................................................................................Belt driven FAN SPEED..............................................................................................................1980 FAN DIAMETER........................................................................................... 17.75 inches FAN MODE............................................................................................................ Pusher FUEL SYSTEM FUEL TYPE...........................................................................Natural gas, propane vapor CARBURETOR...............................................................................................Down Draft SECONDARY FUEL REGULATOR.................................................................... Standard FUEL SHUT OFF SOLENOID........................................................................... Standard OPERATING FUEL PRESSURE...................................................................5” - 14” H2O ELECTRICAL SYSTEM BATTERY CHARGE ALTERNATOR..............................................................12V 30 Amp STATIC BATTERY CHARGER............................................................................... 2 Amp RECOMMENDED BATTERY.............................................................Group 26, 525CCA SYSTEM VOLTAGE.............................................................................................. 12 Volts Rating definitions - Standby: Applicable for supplying emergency power for the duration of the utility power outage. No overload capability is available for this rating. (All ratings in accordance with BS5514, ISO3046, ISO8528 and DIN6271). QT027 OPERATING DATA QT027 KW RATING 27 ENGINE SIZE GENERATOR OUTPUT VOLTAGE/KW - 60Hz 120/240V, 1-phase, 1.0 pf 120/208V, 3-phase, 0.8 pf 120/240V, 3-phase, 0.8 pf GENERATOR LOCKED ROTOR KVA AVAILABLE @ VOLTAGE DIP OF 35% Single phase or 208 3-phase 2.4 Liter Inline 4 KW Nat. Gas 25 25 25 ENGINE COOLING Air flow (inlet air including alternator and combustion air) ft3/min. System coolant capacity US gal. Heat rejection to coolant BTU/hr. Max. operating air temp. on radiator °C (°F) Max. ambient temperature °C (°F) SOUND EMISSIONS IN DBA Exercising at 7 meters Normal operation at 7 meters EXHAUST Exhaust flow at rated output 60 Hz Exhaust temp. at muffler outlet ENGINE PARAMETERS Rated synchronous RPM HP at rated KW Natural Gas (25 kW) (ft3/hr.) 42 108 197 287 359 CB Size (Both) 125 100 90 Propane (27 kW) (gal/hr.) cu ft/hr 0.44 16 1.2 44 2.2 81 3.2 118 4.1 147 2,400 2.5 120,000 60 (150) 50 (140) 68 62 75 cfm °F 130 900 60 Hz 60 Hz 1800 40 AMP 112 94 81 43 cfm POWER ADJUSTMENT FOR AMBIENT CONDITIONS Temperature Deration 3% for every 10 °C above - °C 1.65% for every 10 °F above - °F Altitude Deration 1% for every 100 m above - m 3% for every 1000 ft. above - ft. ENCLOSURE Material Color KW LPG 27 27 27 ENGINE FUEL CONSUMPTION (Natural Gas) (Propane) Exercise cycle 25% of rated load 50% of rated load 75% of rated load 100% of rated load COMBUSTION AIR REQUIREMENTS Flow at rated power 60 Hz AMP 104 87 75 25 77 183 600 Aluminum PMS 422 (Bisque) RATING: All three phases units are rated at 0.8 power factor. All single phase units are rated at 1.0 power factor. STANDBY RATING: Standby ratings apply to installations served by a reliable utility source. The standby rating is applicable to varying loads for the duration of a power outage. There is no overload capability for this rating. Ratings are in accordance with ISO-3046-1. Design and specifications are subject to change without notice. INTERCONNECTIONS QT027 27 27 27 240 1 Ø 208 3 Ø 240 3 Ø 125 100 90 #2 to 1/0 #4 to 1/0 #4 to 1/0 Installation Drawing Ref. No. 0G0325 INSTALLATION LAYOUT 62.2 46.02 DOOR TYP 28.98 AUTO SET EXERCISE TIME OFF QUARTZ OFF ON HOURS 1/10 MANUAL OVER CRANK OVER SPEED LOW COOLANT LEVEL HI COOLANT TEMPERATURE LOW OIL PRESSURE LOW BATTERY LOW FUEL PRESSURE SYSTEM READY FUSES LOCATED INSIDE DANGER High voltage. Contact with terminals may result in personal injury or death. 33.5 SEE INSTALL DWG 0G9370 FOR DETAILS FRONT VIEW WEIGHT: 891 lbs. Generac Power Systems, Inc. • S45 W29290 HWY. 59, Waukesha, WI 53189 • generac.com ©2009 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice. Bulletin 0177710SBY/Printed in U.S.A. 05.08, rev: 03.09
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