Generac Portable Generator 005875 1 User Manual

GENERAC® GUARDIAN® SERIES  
STANDBY GENERATORS - PREPACKAGED  
20 kW  
Air-Cooled Gas Engine Generator Sets  
INCLUDES:  
Standby Power Rating  
Model 005875-1 (Aluminum - Gray) - 20 kW 60Hz  
®
True Power Electrical Technology  
Two Line LCD Tri-lingual  
Digital Nexus™ Controller  
• Electronic Governor  
• 200 Amp Service Rated Nexus Smart  
Switch™ with Digital Load Management  
Technology, NEMA 3R Rated  
• External Main Circuit Breaker,  
System Status & Maintenance Interval  
LED Indicators and GFCI Duplex Outlet  
• Sound Attenuated Enclosure  
• Flexible Fuel Line Connector  
• Composite Mounting Pad  
• Base Fascia  
• Natural Gas or LP Gas Operation  
• 3 Year Limited Warranty  
• UL 2200 Listed  
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. Digital  
voltage regulation at +/- 1%.  
¡
¡
TRUE POWER® ELECTRICAL TECHNOLOGY: Superior harmonics and  
sine wave form produce less than 5% Total Harmonic Distortion for utility  
quality power. This allows confident operation of sensitive electronic equipment  
and micro-chip based appliances, such as variable speed HVAC.  
¡
¡
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:  
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.  
PROTOTYPE TESTED  
SYSTEM TORSIONAL TESTED  
NEMA MG1-22 EVALUATION  
MOTOR STARTING ABILITY  
 
®
SPECIFICATIONS  
GENERATOR  
Model 005875-1 (20 kW)  
Rated Maximum Continuous Power Capacity (LP)  
Rated Maximum Continuous Power Capacity (NG)  
Rated Voltage  
20,000 Watts*  
18,000 Watts*  
240  
Rated Maximum Continuous Load Current – 240 Volts  
Total Harmonic Distortion  
83.3 LP/75 NG  
Less than 5%  
Main Line Circuit Breaker  
90 Amp  
Phase  
1
Number of Rotor Poles  
2
Rated AC Frequency  
60Hz  
Power Factor  
1
Battery Requirement (not included)  
Unit Weight (Pounds/Kilos)  
Group 26R 12 Volts and 525 Cold-cranking Amperes Minimum  
451/204.6  
Dimensions (L x W x H) Inches/mm  
Sound output in dB(A) at 23 ft. with generator operating at normal load  
Sound output in dB(A) at 23 ft. with generator in Quiet-Test™ low speed exercise mode  
48 x 25 x 29 (1218 x 638 x 732)  
66  
60  
ENGINE  
Model 005875-1 (20 kW)  
Type of Engine  
GENERAC OHVI V-TWIN  
Number of Cylinders  
Displacement  
2
999cc  
Cylinder Block  
Aluminum w/Cast Iron Sleeve  
Overhead Valve  
Solid-state w/Magneto  
Electronic  
Valve Arrangement  
Ignition System  
Governor System  
Compression Ratio  
Starter  
9.5:1  
12 Vdc  
Oil Capacity Including Filter  
Operating RPM  
Approx. 1.9 Qts./1.8L  
3,600  
Fuel Consumption  
Natural Gas  
cu.ft./hr.  
1/2 Load  
Full Load  
206  
294  
3
Liquid Propane ft /hr (gal/hr) [Liter/hr]  
1/2 Load  
Full Load  
69 (1.89) [7.15]  
106 (2.90) [10.98]  
Required fuel pressure to generator fuel inlet at all load ranges - 5 to 7 inches of water column for natural gas, 10 to 12 inches of water column for LP gas  
For Btu content, multiply ft3/hr x 2520 (LP) or ft3/hr x 1000 (NG)  
CONTROLS  
2-Line Plain Text LCD Display  
Mode Switch  
Simple user interface for ease of operation.  
-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, 72Hz  
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  
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). * Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition, etc. Maximum power  
decreases about 3.5 percent for each 1,000 feet above sea level. Sound output ratings from certain points on the generator subject to change based on installation parameters.  
 
Generac® Guardian® Series Standby Generator - 20 kW  
TRANSFER SWITCH  
No. of Poles  
Model 005875-1  
Transfer Switch Features  
2
Current Rating (amps)  
Voltage Rating (VAC)  
Utility Voltage Monitor (fixed)  
-Pick-up  
-Dropout  
Return to Utility  
200  
250  
• Includes Digital Load Management technology standard (DLM).  
• Intelligently manages two air conditioner loads with no additional hardware.  
80%  
60%  
approx. 13 sec.  
Standard  
• Up to four more large (240V) loads can be managed when used in  
conjunction with DLM modules.  
Exerciser weekly for 12 minutes  
UL Listed  
Standard  
• Electrically operated, mechanically-held contacts for fast, clean  
connections.  
Enclosure Type  
Withstand Rating (Amps)  
Lug Range  
NEMA 3R  
10,000  
400MCM - #4  
• Rated for all classes of load, 100% equipment rated, both inductive and  
resistive.  
• Dual coil design.  
• Service Rated.  
W1  
• NEMA 3R aluminum outdoor enclosure.  
• Main contacts are silver plated or silver alloy to resist welding and sticking.  
200 Amps 120/240, 1ø  
Open Transition Service Rated  
H1  
Height  
Width  
H2  
Depth  
H1  
Inches 27.24  
H2  
30.0  
W1  
11.4  
W2  
13.5  
7.09  
mm 692.0 762.4 289.0 343.0 180.0  
DEPTH  
W2  
Design and specifications subject to change without notice. Dimensions shown are approximate. Contact your Generac dealer for certified drawings. DO NOT USE THESE DIMENSIONS FOR INSTALLATION PURPOSES.  
637.6  
[25.1]  
1218  
[47.9]  
731.9  
[28.8]  
®
642  
[25.3]  
76.2 [3.0]  
PEA GRAVEL  
MINIMUM  
1226  
[48.3]  
FRONT VIEW  
LEFT SIDE VIEW  
 
AVAILABLE ACCESSORIES  
Model #  
Product  
Description  
Every standby generator requires a battery to start the system. Generac offers the  
recommended 26R wet cell battery for use with all air-cooled standby product.  
5819  
26R Wet Cell Battery  
If the temperature regularly falls below 32° F, install a cold weather kit to maintain  
optimal battery temperature. Kit consists of battery warmer with thermostat built  
into the wrap.  
6212  
5621  
5704  
5665  
5928  
5951  
5937  
Cold Weather Kit  
Auxiliary Transfer Switch  
Contact Kit  
The auxiliary transfer switch contact kit allows the transfer switch to lock out a  
single large electrical load you may not need.  
Paint Kit  
Medium Gray Kit  
Generac's scheduled maintenance kits provide all the hardware necessary to  
perform complete routine maintenance on a Generac automatic standby generator.  
Scheduled Maintenance Kit  
Nexus Wireless Remote  
Completely wireless and battery powered, Generac's Nexus wireless remote monitor  
provides you with instant status information without ever leaving the house. Not  
compatible with CorePower or EcoGen systems.  
Remotely control generator functions with the advanced model's LCD display. In  
addition to remote testing of the generator, set the excercise cycle and maintenance  
interval reminders. Not compatible with CorePower or EcoGen systems.  
Advanced Nexus Wireless  
Remote  
DLM Modules are used in conjunction with the Nexus Smart Switch to increase  
its load management capabilities. It gives the Nexus Smart Switch additional load  
management flexibility not found in any other transfer switch.  
DLM Load Control Module  
(50 Amps)  
®
Generac Power Systems, Inc. • S45 W29290 HWY. 59, Waukesha, WI 53189 • generac.com  
©2012 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice. Bulletin 0186160SBY-J Printed in U.S.A. 10/15/12  
 

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