Specifications - Generac Power Systems 4.6L Owner's Manual

SPECIFICATIONS

STATIONARY EMERGENCY GENERATOR
Type......................................................................Synchronous
Rotor Insulation .............................................................Class H
Stator Insulation ............................................................Class H
Total Harmonic Distortion .................................................< 5%
Telephone Interference Factor (TIF) .................................. < 50
Alternator Output Leads 3-phase ..................................... 6-wire
Bearings .................................................................. Sealed Ball
Coupling ................................................................Flexible Disc
Load Capacity (Standby Rating) ....................................80 kW*
*
NOTE: Generator rating and performance 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 ......................................................Brushless
Generator Output Voltage/kW - 60 Hz
120/240 V, 1-phase, 1.0 pf
120/208 V, 3-phase, 0.8 pf
120/240 V, 3-phase, 0.8 pf
277/480 V, 3-phase, 0.8 pf
Generator Locked Rotor kVA Available @ Voltage Dip of 35%
Single-phase or 208 V, 3-phase .................................160 kVA
480 V, 3-phase ..........................................................185 kVA
ENGINE
Make ........................................................................... Generac
Model ............................................................................. V-type
Cylinders and Arrangement .....................................................8
Displacement ............................................................... 4.6 Liter
Bore............................................................ 90.2 mm (3.55 in.)
Stroke ......................................................... 89.9 mm (3.54 in.)
Compression Ratio....................................................... 9.4-to-1
Air Intake System ......................................... Naturally Aspirated
Valve Seats ................................................................ Hardened
Lifter Type .................................................................. Hydraulic
Engine Parameters
Rated Synchronous rpm.........................................60 Hz, 3600
Exhaust System
Exhaust Flow at Rated Output 60 Hz .............................720 cfm
Exhaust Temperature at Rated Output ..............................840 °F
Combustion Air Requirements (Natural Gas)
Flow at rated power, 60 Hz ...........................................250 cfm
Governor
Type...........................................................................Electronic
Frequency Regulation .............................................Isochronous
Steady State Regulation ..............................................± 0.25%
Engine Lubrication System
Type of Oil Pump ...............................................................Gear
Oil Filter .......................................................Full Flow, Cartridge
Crankcase Oil Capacity ............................................ 6 U.S. qts.
Specifications
kW Amp CB Size
77 333 400
80 278 300
80 241 300
80 120 150
6-1
COOLING SYSTEM
Type Closed
Water Pump ............................................................. Belt Driven
Fan Speed .........................................................................1600
Fan Diameter ..............................................................26 inches
Fan Mode ......................................................................... Puller
Air Flow (inlet air including alternator and
combustion air) ................................................. 5300 ft
Coolant Capacity ....................................................4.0 U.S. gal.
Heat Rejection to Coolant ....................................316,000 Btu/h
Maximum Operating Air Temp. on Radiator ......... 60 °C (150 °F)
Maximum Ambient Temperature ......................... 50 °C (140 °F)
FUEL SYSTEM
Type of Fuel ................................................. See Caution below
Carburetor............................................................... Down Draft
Secondary Fuel Regulator............................................ Standard
Fuel Shut-off Solenoid ................................................. Standard
Operating Fuel Pressure ............... 11 in. - 14 in. Water Column
3
Fuel Consumption - ft /hr (Natural Gas/LPV)
Exercise 25%
Cycle Load
131/53 312/126
Engine is not field convertible between

natural gas and propane. Jet size and ignition
timing are factory set for the specific fuel.
ELECTRICAL SYSTEM
Battery Charge Alternator .....................................12 V, 30 Amp
Smart Charger .......................................................12 V, 2 Amp
Recommended Battery .......................................... 24F 525CCA
System Voltage ............................................................ 12 Volts
Battery dimensions (L x W x H) for the Group 24 battery should
not exceed 10 3/4" x 6 13/16" x 9" (273 mm x 173 mm x 229
mm).
Voltage Regulator
Type...........................................................................Electronic
Regulation ........................................................................± 1%
Power Adjustment for Ambient Conditions
Temperature Deration
3% for every 10 °C above °C ..............................................25
1.65% for every 10 °F above °F ..........................................77
Altitude Deration
1% for every 100 m above m............................................183
3% for every 1000 ft. above ft. .........................................600
Controller .................................................................. Nexus
50% 75% 100%
Load Load Load
600/241 835/336 1154/465
NOTE:
/min.
3