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SG020 / SG025 Specs 0160770SBY Liquid Cooled Gas Engine Generator Sets
Continuous Standby Power Rating
20KW 60 Hz / 20KVA 50 Hz
25KW 60 Hz / 25KVA 50 Hz
Power Matched
GENERAC MMC 4G15 ENGINE
Naturally Aspirated
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SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE
REGULATION. This state-of-the-art power maximizing regulation
system is standard on all Generac models. It provides optimized
FAST RESPONSE to changing load conditions and MAXIMUM
MOTOR STARTING CAPABILITY by electronically torque-
matching the surge loads to the engine.
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SINGLE SOURCE SERVICE RESPONSE from Generac's dealer
network provides parts and service know-how for the entire unit,
from the engine to the smallest electronic component. You are
never on your own when you own an GENERAC POWER
SYSTEM.
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GENERAC TRANSFER SWITCHES, SWITCHGEAR AND
ACCESSORIES. Long life and reliability is synonymous with
GENERAC POWER SYSTEMS. One reason for this confidence
is that the GENERAC product line includes its own transfer
systems, accessories, switchgear and controls for total system
compatibility.
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INNOVATIVE DESIGN & PROTOTYPE TESTING are key
components of GENERAC'S success in "IMPROVING POWER
BY DESIGN." But it doesn't stop there. Total commitment to
component testing, reliability testing, environmental testing,
destruction and life testing, plus testing to applicable CSA, NEMA,
EGSA, and other standards, allows you to choose GENERAC
POWER SYSTEMS with the confidence that these systems will
provide superior performance.
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TEST CRITERIA:
PROTOTYPE TESTED
SYSTEM TORSIONAL TESTED
ELECTRO-MAGNETIC INTERFERENCE
NEMA MG1-22 EVALUATION
MOTOR STARTING ABILITY
SHORT CIRCUIT TESTING
UL 2200 COMPLIANCE AVAILABLE
FEATURES
Prime Power Rating
15KW 60 Hz / 15KVA 50 Hz
20KW 60 Hz / 20KVA 50 Hz
SG020
SG025
4016 Quartz Drive
Santa Rosa, CA 95405
Phone: 707 539-9003
Fax: 707 539-5212
Email: sales@generatorjoe.NET
Web www.generatorjoe.NET 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
................................................................................... +1% 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 ... 0.5%
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, 75 A.H., 26F
GROUND POLARITY .............................................................. Negative
APPLICATION
& ENGINEERING DATA
GENERATOR FEATURES
Two pole, revolving field generator, directly connected to the
engine shaft through a heavy-duty, flexible disc for permanent
alignment.
Generator meets temperature rise standards for class "F"
insulation as defined by NEMA MG1-22 and NEMA MG1-1.
Stator windings are "trickle" varnished and rotor windings are "roll-
dipped" for complete Class H impregnation.
All model designs pass a three-phase symmetrical short circuit
test to assure system protection and realiability.
Unit tested for motor-starting ability by measuring 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 amortisseur windings, tooth and 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 balanced T.I.F. (Telephone Influence Factor) have
been evaluated to acceptable standards in accordance with NEMA
MG1-22.
Alternator is of drip-proof guarded construction.
Fully life-tested protective systems, including "field circuit and
thermal overload protection" and standard mainline circuit breakers
capable of handling full output capacity.
System torsional acceptability confirmed during Prototype Testing.
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 STANDBY
PRIME
SG020
SG025
SG020
SG025
GENERATOR OUTPUT VOLTAGE/KW-60Hz
NG/LP
Rated AMP
NG/LP
Rated AMP
NG/LP
Rated AMP
NG/LP
Rated AMP
120/240V, 1-phase, 1.0 pf
20
83.3
25
104.2
15
62.5
20
83.3
120/208V, 3-phase, 0.8 pf
20
69.5
25
86.8
15
52.1
20
69.5
120/240V, 3-phase, 0.8 pf
20
60.2
25
75.3
15
45.2
20
60.2
277/480V, 3-phase, 0.8 pf
20
30.1
25
37.6
15
22.6
20
30.1
600V, 3-phase, 0.8 pf
20
24.1
25
30.1
15
18.1
20
24.1
GENERATOR OUTPUT VOLTAGE/KVA-50Hz
NG/LP
Rated