20 kW Liquid Cooled Gas Engine Generator Sets

UPS Battery Backup

Truck Generators

Power Generators

Home Standby

Commercial Gensets

Portable Generators

Marine Generators

Power Failure

Standby Power Rating

_{20 kW 60 Hz}WhisperTest

Low Speed Exercise 62 dB(A) at 23 feet Naturally Aspirated Gaseous Fueled UL 2200 Listed

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

FEATURES
Watertight state of the art electrical connectors
Mainline circuit breaker
Radiator drain extension
Battery charge alternator
2 Amp static battery charger
Battery and battery cables
Battery rack
Fan and belt guards
Isochronous governor
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 _{STANDBY 20kW}
GENERATOR SPECIFICATIONS
TYPE ................................................................................................................SynchronousROTOR INSULATION .................................................................................................Class FSTATOR INSULATION ...............................................................................................Class FTOTAL HARMONIC DISTORTION ..................................................................................<5%TELEPHONE INTERFERENCE FACTOR (TIF) .................................................................. <50ALTERNATOR OUTPUT LEADS 3 PHASE ....................................................................4 wireBEARINGS...........................................................................................................Sealed BallCOUPLING .......................................................................................................Flexible DiscLOAD CAPACITY (STANDBY RATING) ....................................................................... 20 kWEXCITATION SYSTEM .................................................................................................Direct
NOTE: Generator rating and performance in accordance with ISO85285, 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 F rated at 130 °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

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
ENGINE SPECIFICATIONS

MAKE ...................................................................................................................... GeneracMODEL .......................................................................................................................In lineCYLINDERS ....................................................................................................................... 4DISPLACEMENT ..................................................................................................... 1.5 LiterBORE............................................................................................................................. 2.97STROKE ........................................................................................................................ 3.23COMPRESSION RATIO ................................................................................................ 9.4:1INTAKE AIR SYSTEM ..............................................................................Naturally AspiratedVALVE SEATS .....................................................................................................ReplaceableLIFTER TYPE ......................................................................................................... Hydraulic

GOVERNOR SPECIFICATIONS

TYPE .....................................................................................................................Electronic FREQUENCY REGULATION ...............................................................................Isochronous STEADY STATE REGULATION ....................................................................................± 0.25 ADJUSTMENTS

Speed..........................................................................................................Yes

Droop..........................................................................................................Yes

ENGINE LUBRICATION SYSTEM

OIL PUMP ..................................................................................................................... GearOIL FILTER ..................................................................................Full flow spin-on cartridgeCRANKCASE CAPACITY .........................................................................................4 Quarts

ENGINE COOLING SYSTEM

TYPE ......................................................................................................................... ClosedWATER PUMP ......................................................................................................Belt drivenFAN SPEED .................................................................................................................. 2550FAN DIAMETER .....................................................................................................15 inchesFAN MODE ................................................................................................................ Pusher

FUEL SYSTEM

FUEL TYPE ................................................................................Natural gas, propane vaporCARBURETOR .....................................................................................................Down DraftSECONDARY FUEL REGULATOR ........................................................................... StandardFUEL SHUT OFF SOLENOID .................................................................................. StandardOPERATING FUEL PRESSURE .........................................................................5” - 14” H₂O

ELECTRICAL SYSTEM

BATTERY CHARGE ALTERNATOR .....................................................................12V 30 AmpSTATIC BATTERY CHARGER ......................................................................................2 AmpRECOMMENDED BATTERY ................................................................... Group 26, 525CCASYSTEM 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 and DIN6271). (All ratings in accordance with BS5514, ISO3046, ISO8528 and DIN6271).

STANDBY 20kW

OPERATING DATA

		COMMERCIAL 20 kW
KW RATING		20
ENGINE SIZE		1.5 Liter 4 cyl. inline
GENERATOR OUTPUT VOLTAGE/KW - 60Hz 120/208V, 3-phase, 0.8 pf	KW 20	AMP 69	CB Size 80
GENERATOR LOCKED ROTOR KVA AVAILABLE @ VOLTAGE DIP OF 35% 208 3-phase		34
ENGINE FUEL CONSUMPTION (Natural Gas) (Propane) Exercise cycle 25% of rated load 50% of rated load 75% of rated load 100% of rated load	Natural Gas (ft3/hr.) 60 124 188 250 315	(gal/hr.) 0.65 1.35 2.05 2.73 3.44	Propane cu ft/hr24 49 75 99 125
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)		1,528 2.0 107,000 60 (150) 50 (140)
COMBUSTION AIR REQUIREMENTS Flow at rated power 60 Hz cfm		91
SOUND EMISSIONS IN DBA Exercising at 7 meters Full load at 7 meters		62 75
EXHAUST Exhaust flow at rated output 60 Hz cfmExhaust temp. at muffler outlet °F		177 910
ENGINE PARAMETERS Rated synchronous RPM 60 Hz HP at rated KW 60 Hz		3600 34.8
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.		25 77183 600

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. KW rating is based on LPG Fuel and may derate with natural gas. Maximum wattage and current are subject to and limited by such factors as fuelBtu content, ambient temperature, altitude, engine power and condition, etc.

^{INTERCONNECTIONS}STANDBY 20kWCOMMERCIAL SERIES

INSTALLATION LAYOUT UNIT WEIGHT: Steel 1020 lbs., Aluminum 930 lbs.