Generac Power Systems SG020 - Manual (Page 2)

GENERATOR SPECIFICATIONS
TYPE .................................................................Two-pole, revolving field
ROTOR INSULATION ..................................................................Class F
STATOR INSULATION .................................................................Class F
TOTAL hARMONIC DISTORTION ..................................................<3%
TELEPhONE INTERFERENCE FACTOR (TIF) ................................<50
ALTERNATOR ...........................................Self-ventilated and drip-proof
BEARINGS (PRE-LUBED & SEALED) .................................................1
COUPLING .............................................................. Direct, Flexible Disc
LOAD CAPACITY (STANDBY) .......................................................100%
NOTE: Emergency loading in compliance with NFPA 99, NFPA
110, paragraph 5-13.2.6. Generator rating and performance in
accordance with ISO8528-5, BS5514, SAE J1349, ISO3046 and
DIN6271 standards.
EXCITATION SYSTEM
DIRECT ............................................................. DC excitation system ✓
Low-velocity brushes and slip rings ✓
REGULATION ................................................................... Solid-state ✓
.................................................................................... +2% regulation ✓
ENGINE SPECIFICATIONS
MAKE .................................................................................... GENERAC
MODEL ................................................................................. MMC 4G15
CYLINDERS ............................................................................... 4 in-line
DISPLACEMENT ................................................... 1.5 Liter (91.5 cu. in.)
BORE .........................................................................75.5 mm (2.97 in.)
STROKE ........................................................................82 mm (3.23 in.)
COMPRESSION RATIO ..................................................................9.4:1
INTAKE AIR ...............................................................Naturally Aspirated
NUMBER OF MAIN BEARINGS ...........................................................5
CONNECTING RODS .............................................. 4-Drop forged steel
CYLINDER hEAD ..................................................................... S.O.h.C.
PISTONS ..................................................................... 4-Aluminum Alloy
CRANKShAFT ...........................................................Drop Forged Steel
VALVE TRAIN
LIFTER TYPE ...............................................................Rocker Arm Type
INTAKE VALVE MATERIAL .....................high Temperature Alloy Forged
EXhAUST VALVE MATERIAL ................high Temperature Alloy Forged
VALVE SEATS .....................................................................Replaceable
ENGINE GOVERNOR
❐
ELECTRONIC ...................................................................... Standard
FREQUENCY REGULATION, NO-LOAD TO FULL LOAD ... Isochronous
STEADY STATE REGULATION ...............................................+0.25%
LUBRICATION SYSTEM
TYPE OF OIL PUMP .......................................................................Gear
OIL FILTER .................................................................Full flow, cartridge
CRANKCASE CAPACITY .............................................3.8 Liters (4 qts.)
COOLING SYSTEM
TYPE OF SYSTEM ...................................Pressurized, closed recovery
WATER PUMP ..................................................... Pre-lubed, self-sealing
TYPE OF FAN ............................................................................. Pusher
NUMBER OF FAN BLADES ..................................................................6
DIAMETER OF FAN ....................................................380 mm (15.0 in.)
COOLANT hEATER ............................................................120V, 500 W
FUEL SYSTEM
FUEL
❐
Natural Gas or L.P. Vapor ................................................. Standard
❐ L.P. Liquid Withdrawal ........................................................ Optional
CARBURETOR .......................................................................Down draft
SECONDARY FUEL REGULATOR ....... Nat. Gas or L.P. Vapor Systems
hOT WATER VAPORIZER..................... L.P. Liquid Withdrawal Systems
AUTOMATIC FUEL LOCKOFF SOLENOID.............................. Standard
OPERATING FUEL PRESSURE VAPOR SYSTEMS ........7" to 15" h
2
O
ELECTRICAL SYSTEM
BATTERY ChARGE ALTERNATOR ............................. 15 Amps at 12 V
STARTER MOTOR ...........................................................................12 V
RECOMMENDED BATTERY ............................(1) - 12 V, 530 CCA, 26F
GROUND POLARITY ................................................................Negative
APPLICATION
& ENGINEERING DATA
GENERATOR FEATURES
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). Prime (Unlimited Running Time): Applicable for supplying electric power in lieu of commercially purchased power. Prime power is the maximum power available at
variable load. A 10% overload capacity is available for 1 hour in 12 hours. (All ratings in accordance with BS5514, ISO3046, ISO8528 and DIN6271).
SG020 / SG025
■ Two pole, revolving field generator, directly connected to the engine
shaft through a heavy-duty, flexible disc for permanent alignment.
■ Generator meets the temperature rise standards for class "F"
insulation as defined by NEMA MG1-32.6.
■ All prototype models have passed a three-phase symmetrical short
circuit test to assure system protection and reliability.
■ All prototype models are tested for motor starting ability by
measuring the instantaneous voltage dip with a waveform data
acquisition system.
■ All models utilize an advanced wire harness design for reliable
interconnection within the circuitry.
■ Magnetic circuit, including skewed stator design, provides a minimal
level of waveform distortion and an electromagnetic interference
level which meets accepted requirements for standard AM radio, TV,
and marine radio telephone applications.
■ Voltage waveform deviation, total harmonic content of the AC
waveform, and T.I.F. (Telephone Influence Factor) have been
evaluated to acceptable standards in accordance with NEMA
MG1-32.
■ Alternator is self-ventilated and drip-proof constructed.
■ Fully life-tested protective systems, including "field circuit and
thermal overload protection" and optional main-line circuit breakers
capable of handling full output capacity.
■ System Torsional acceptability confirmed during Prototype Testing.
■ Generac h-100 Digital Control Panel