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GENERAC® STANDBY GENERATORS
ISO
9001:
2008
22 kVA
Liquid-Cooled Engine Generator Sets
INCLUDES:
• Generac Naturally Aspirated
Gaseous Fueled 2.4L Engine
• Two Line LCD Tri-lingual
Digital Nexus™ Controller
• Sound Attenuated Enclosure
• Isochronous Electronic Governor
• Closed Coolant Recovery System
• Smart Battery Charger
• UV/Ozone Resistant Hoses
• ±1% Voltage Regulation
• Natural Gas or LP Operation
Standby Power Rating
Model QT02724MNAX - 22 kVA, 50Hz, 1Ø
Model QT02724RNAX - 27 kVA, 50Hz, 3Ø
• 1 Year Limited Warranty
FEATURES
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.
TEST CRITERIA:
PROTOTYPE TESTED NEMA MG1-22 EVALUATION
SYSTEM TORSIONAL TESTED MOTOR STARTING ABILITY
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. An
unequalled ±1% voltage regulation.
SINGLE SOURCE SERVICE RESPONSE from Generac’s extensive dealer
network provides parts and service know-how for the entire unit, from the
engine to the smallest electronic component.
GENERAC TRANSFER SWITCHES. Long life and reliability are
synonymous with GENERAC POWER SYSTEMS. One reason for this
confidence is that the GENERAC product line includes its own transfer
systems and controls for total system compatibility.
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Application & Engineering Data
22kVA
GENERATOR SPECIFICATIONS
TYPE Synchronous
ROTOR INSULATION Class H
STATOR INSULATION Class H
TELEPHONE INTERFERENCE FACTOR (TIF) <50
ALTERNATOR OUTPUT LEADS 3 PHASE 4 wire
BEARINGS Sealed Ball
COUPLING Flexible Disc
LOAD CAPACITY (STANDBY RATING) 22kVA 1Ø
27kVA 3Ø
EXCITATION SYSTEM Direct
VOLTAGE REGULATION
TYPE Electronic
SENSING Single Phase
REGULATION ± 1%
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 H rated at 150 °C rise
All models are fully prototyped tested
ENCLOSURE FEATURES
Aluminum weather
protective enclosure
Enclosed critical grade
muffler
Small, compact,
attractive
SAE Sound attenuated enclosure ensures quiet operation
Ensures protection against mother nature.
Electrostatically applied textured epoxy paint for
added durability.
Quiet, critical grade muffler is mounted inside
the unit to prevent injuries.
Makes for an easy, eye appealing installation.
ENGINE SPECIFICATIONS
MAKE Generac
MODEL In line
CYLINDERS 4
DISPLACEMENT 2.4 Liter
BORE 3.41
STROKE 3.94
COMPRESSION RATIO 8.5:1
INTAKE AIR SYSTEM Naturally Aspirated
LIFTER TYPE Hydraulic
GOVERNOR SPECIFICATIONS
TYPE Electronic
FREQUENCY REGULATION Isochronous
STEADY STATE REGULATION ± 0.25%
ENGINE LUBRICATION SYSTEM
OIL PUMP Gear
OIL FILTER Full flow spin-on cartridge
CRANKCASE CAPACITY 4 Quarts
ENGINE COOLING SYSTEM
TYPE Closed
WATER PUMP Belt driven
FAN SPEED 1650
FAN DIAMETER 17.75 inches
FAN MODE Pusher
FUEL SYSTEM
FUEL TYPE Natural gas, propane vapor
CARBURETOR Down Draft
SECONDARY FUEL REGULATOR Standard
FUEL SHUT OFF SOLENOID Standard
OPERATING FUEL PRESSURE 5” - 14” H2O
ELECTRICAL SYSTEM
BATTERY CHARGE ALTERNATOR 12V 30 Amp
STATIC BATTERY CHARGER 2 Amp
RECOMMENDED BATTERY Group 26, 525CCA
SYSTEM 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, SAE J1349 and DIN6271).
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Generac® Standby Generator - 22kVA
®
OPERATING DATA
kVA RATING
ENGINE SIZE 2.4 Liter Inline 4
GENERATOR OUTPUT VOLTAGE/kVA - 50Hz kVA AMP CB Size
110/220V, 1-phase, 1.0 pf
231/400V, 3-phase, 0.8 pf
21.6
27
ENGINE FUEL CONSUMPTION Natural Gas Propane
3
25% of rated load
50% of rated load
75% of rated load
100% of rated load
For Btu content, multiply ft3/hr x 2520 (LP) or ft3/hr x 1000 (NG)
(ft3/hr.)
90
164
239
299
(M
/hr.)
2.55
4.65
6.77
8.47
ENGINE COOLING
Air flow
(inlet air including alternator and combustion air) ft
System coolant capacity
Heat rejection to coolant
Max. operating air temp. on radiator
Max. ambient temperature
US gal.
BTU/hr.
°C (°F)
°C (°F)
3
/min.
22, 1Ø
27, 3Ø
(gal/hr.)
0.99
1.81
2.63
3.30
2,000
2.5
100,000
60 (150)
50 (140)
98
39
125
50
(liters/hr.)
3.75
6.84
9.97
12.47
(M
3
/hr.)
1.02
1.86
2.71
3.39
COMBUSTION AIR REQUIREMENTS
Flow at rated power 50 Hz
cfm 57
SOUND EMISSIONS IN DBA
Normal operation at 7 meters 61
EXHAUST
Exhaust flow at rated output 50 Hz
Exhaust temp. at muffler outlet
cfm
°F
ENGINE PARAMETERS
Rated synchronous RPM
HP at rated kVA
50 Hz
50 Hz
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.
ENCLOSURE
Material
Color
Aluminum
PMS 422 (Bisque)
110
885
1500
35
25
77
183
600
RATING: All three phase 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.
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CONTROLS
NEXUS™ CONTROL FEATURES
2-Line Plain Text LCD Display Simple user interface for ease of operation.
Mode Switch
-Auto Automatic Start on Utility failure. 7 day exerciser.
-Off Stops unit. Power is removed. Control and charger still operate.
-Manual/Test (start) Start with starter control, unit stays on. If utility fails, transfer to load takes place.
Programmable start delay between 10-30 seconds Standard
Engine Start Sequence Cyclic cranking: 16 sec. on, 7 rest (90 sec. maximum duration).
Engine Warm-up 5 seconds
Engine Cool-Down 1 minute
Starter Lock-out Starter cannot re-engage until 5 sec. after engine has stopped.
Smart Battery Charger Standard
Automatic Voltage Regulation with Over and Under Voltage Protection Standard
Automatic Low Oil Pressure Shutdown Standard
Overspeed Shutdown Standard, 62.5Hz
High Temperature Shutdown Standard
Overcrank Protection Standard
Safety Fused Standard
Failure to Transfer Protection Standard
Low Battery Protection Standard
50 Event Run Log Standard
Future Set Capable Exerciser Standard
Incorrect Wiring Protection Standard
Internal Fault Protection Standard
Common External Fault Capability Standard
Governor Failure Protection Standard
22kVA
*Connections may vary , refer to the owner’s manual for specific connection information.
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INSTALLATION LAYOUT
®
22kVA
Generac Power Systems, Inc. • S45 W29290 HWY. 59, Waukesha, WI 53189 • generac.com
©2011 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice. Bulletin 0187760SBY-E / Printed in U.S.A. 06/26/12
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