Generac 20kW - Manual (Page 10)

SPECIFICATIONS
GENERATOR
Type ............................................................................. Synchronous
Rotor Insulation ....................................................................Class F
Stator Insulation ...................................................................Class F
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) ............................................20kW*
*
NOTE: Generator rating and perfomance in accordance with ISO8528-5, BS5514, SAE J1349,
ISO3046 and DIN 6271 Standards. KW rating is based on LPG fuel and may derate with natural
gas.
Excitation System ....................................................................Direct
Generator Output Voltage/kW - 60 Hz
kW Amp CB Size
120/240V, 1-phase, 1.0 pf 20 83 100
120/208V, 3-phase, 0.8 pf 20 69 100
Generator Locked Rotor KVA Available @ Voltage Dip of 35%
Single-phase or 208 3-phase ............................................. 34 KVA
ENGINE
Make ................................................................................... Generac
Model ..................................................................................... In Line
Cylinders and Arrangement ............................................................ 4
Displacement ....................................................................... 1.5 Liter
Bore ...................................................................................... 2.97 in.
Stroke ................................................................................... 3.23 in.
Compression Ratio ...............................................................9.4-to-1
Air Intake System ................................................Natually Aspirated
Valve Seats ................................................................... Replaceable
Lifter Type .......................................................................... Hydraulic
Engine Parameters
Rated Synchronous RPM ..............................................60 Hz, 3600
HP at rated kW ..................................................................60 Hz, 32
Exhaust System
Exhaust Flow at Rated Output 60 Hz .................................. 177 cfm
Exhaust Temperature at Rated Output .................................. 910° F
Combustion Air Requirements (Natural Gas)
Flow at rated power, 60 Hz ................................................... 70 cfm
Governor
Type .................................................................................. Electronic
Frequency Regulation ...................................................Isochronous
Steady State Regulation ........................................................± .25%
Adjustments:
Speed ............................................................................ Selectable
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Engine Lubrication System
Type of Oil Pump ...................................................................... Gear
Oil Filter .............................................................Full Flow, Cartridge
Crankcase Oil Capacity ....................................................4 U.S. qts.
COOLING SYSTEM
Type ....................................................................................... Closed
Water Pump .................................................................... Belt Driven
Fan Speed ................................................................................ 2550
Fan Diameter .....................................................................15 inches
Fan Mode ..............................................................................Pusher
Air Flow (inlet air including alternator and
combustion air) .......................................................... 1528 ft3/min.
Coolant Capacity ...........................................................2.0 U.S. gal.
Heat Rejection to Coolant ..........................................107,000 Btu/h
Maximum Operating Air Temp. on Radiator ..............60° C (150° F)
Maximum Ambient Temperature ................................50° C (140° F)
FUEL SYSTEM
Type of Fuel ......................................... Natural Gas, Propane Vapor
Carburetor ...................................................................... Down Draft
Secondary Fuel Regulator .................................................Standard
Fuel Shut-off Solenoid ........................................................Standard
Operating Fuel Pressure ...................... 5 in. - 14 in. Water Column
Fuel Consumption - ft 3 /hr (Natural Gas/LPV)
Exercise 25% 50% 75% 100%
Cycle Load Load Load Load
60/24 124/49 188/75 250/99 515/125
ELECTRICAL SYSTEM
Battery Charge Alternator ............................................12V, 15 Amp
Static Battery Charger ............................................................2 Amp
Recommended Battery ...................................... Group 26, 525CCA
System Voltage .....................................................................12 Volts
Voltage Regulator
Type .................................................................................. Electronic
Sensing ........................................................................ Single-phase
Regulation ................................................................................± 1%
Features ................................................. V/F Adjustable, Adjustable
Voltage and Gain LED Indicators
Power Adjustment for Ambient Conditions
Temperature Deration
3% for every 10° C above °C ..................................................... 25
1.65% for every 10° above °F .................................................... 77
Altitude Deration
1% for every 100 m above m ................................................... 182
3% for every 1000 ft. above ft. ................................................. 600
Controller ................... R-100 (0F7380D - 240V)
(0F7381D - 208V)
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6-1
Standby Generator Sets
Specifications
GenSpec013 Rev. A 09/05