Generac Portable Generator 50Hz User Manual

GENERAC® STANDBY GENERATORS  
22 kVA  
Liquid-Cooled Engine Generator Sets  
INCLUDES:  
Standby Power Rating  
Model QT02724MNAX - 22 kVA, 50Hz, 1Ø  
Model QT02724RNAX - 27 kVA, 50Hz, 3Ø  
• 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  
• 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.  
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.  
TEST CRITERIA:  
PROTOTYPE TESTED  
SYSTEM TORSIONAL TESTED  
NEMA MG1-22 EVALUATION  
MOTOR STARTING ABILITY  
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.  
ISO  
9001:  
2008  
 
Generac® Standby Generator - 22kVA  
®
OPERATING DATA  
22, 1Ø  
27, 3Ø  
kVA RATING  
ENGINE SIZE  
2.4 Liter Inline 4  
AMP  
GENERATOR OUTPUT VOLTAGE/kVA - 50Hz  
kVA  
CB Size  
110/220V, 1-phase, 1.0 pf  
231/400V, 3-phase, 0.8 pf  
21.6  
27  
98  
39  
125  
50  
ENGINE FUEL CONSUMPTION  
Natural Gas  
Propane  
(ft3/hr.)  
90  
164  
239  
299  
(M3/hr.)  
2.55  
4.65  
6.77  
8.47  
(gal/hr.)  
0.99  
1.81  
2.63  
3.30  
(liters/hr.)  
3.75  
6.84  
9.97  
12.47  
(M3/hr.)  
25% of rated load  
50% of rated load  
75% of rated load  
100% of rated load  
1.02  
1.86  
2.71  
3.39  
For Btu content, multiply ft3/hr x 2520 (LP) or ft3/hr x 1000 (NG)  
ENGINE COOLING  
Air flow (inlet air including alternator and combustion air)  
System coolant capacity  
Heat rejection to coolant  
Max. operating air temp. on radiator  
Max. ambient temperature  
ft3/min.  
US gal.  
BTU/hr.  
°C (°F)  
°C (°F)  
2,000  
2.5  
100,000  
60 (150)  
50 (140)  
COMBUSTION AIR REQUIREMENTS  
Flow at rated power 50 Hz  
SOUND EMISSIONS IN DBA  
Normal operation at 7 meters  
EXHAUST  
cfm  
57  
61  
Exhaust flow at rated output 50 Hz  
Exhaust temp. at muffler outlet  
cfm  
°F  
110  
885  
ENGINE PARAMETERS  
Rated synchronous RPM  
HP at rated kVA  
50 Hz  
50 Hz  
1500  
35  
POWER ADJUSTMENT FOR AMBIENT CONDITIONS  
Temperature Deration  
3% for every 10 °C above - °C  
1.65% for every 10 °F above - °F  
25  
77  
Altitude Deration  
1% for every 100 m above - m  
3% for every 1000 ft. above - ft.  
183  
600  
ENCLOSURE  
Material  
Color  
Aluminum  
PMS 422 (Bisque)  
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.  
 
CONTROLS  
22kVA  
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  
Engine Start Sequence  
Engine Warm-up  
Standard  
Cyclic cranking: 16 sec. on, 7 rest (90 sec. maximum duration).  
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  
Standard  
Standard  
Standard, 62.5Hz  
Standard  
Standard  
Standard  
Standard  
Standard  
Standard  
Standard  
Standard  
Standard  
Standard  
Standard  
Automatic Voltage Regulation with Over and Under Voltage Protection  
Automatic Low Oil Pressure Shutdown  
Overspeed Shutdown  
High Temperature Shutdown  
Overcrank Protection  
Safety Fused  
Failure to Transfer Protection  
Low Battery Protection  
50 Event Run Log  
Future Set Capable Exerciser  
Incorrect Wiring Protection  
Internal Fault Protection  
Common External Fault Capability  
Governor Failure Protection  
*Connections may vary , refer to the owner’s manual for specific connection information.  
 
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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