Briggs & Stratton 040590 Specification Sheet
12kW1 Standby Generator
Briggs & Stratton®
The Smart Choice
Reliable back-up power for added peace of mind.
Guard against losses due to power outages with
a Briggs & Stratton Standby Generator.
4
New Upgraded Control System
• New AVR optimizes generator performance with tighter voltage control
• LCD display that displays multi-line text and graphics
• Default exercise cycle setting of 16 seconds
• Low speed exercise available to save fuel and reduce noise
• Monitors cold temperatures to avoid moisture buildup in engine oil
• Cleaner power with improved frequency regulation
• More eicient alternator capable of starting most 5-ton air conditioners
Designed for Easy Installation & Maintenance
• Approved for installation as close as 18" to a building
• Removable roof and side panels provide better service access to
the engine and alternator
• Controller, battery charger, and AVR can be replaced separately
• External on/o switch located on back of enclosure
2
Commercial Vanguard® Engine
• Easy conversion between natural gas (NG) and liquid propane vapor
(LPV) during installation
• Advanced debris management keeping engine clean and cool for
enhanced durability and performance
• Dynamically balanced crankshaft minimizes engine noise and vibration
Charging System
• Independent battery charger
• Optimizes battery life with a 3-stage battery charger (bulk,
absorption, and float stage)
Corrosion Resistant Enclosure & Base
• Made with automotive grade galvanneal steel to resist rust
• Powder-coated paint for years of protection against chips
and abrasions
• Certified to withstand hurricane-force winds up to 175mph
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Briggs & Stratton® Full Synthetic Generator Oil
• Shields the engine from low temperature sludge buildup
and high temperature deposits
• Reduces engine wear, scoring and abrasion
Compatible with Symphony® II Power
Management System
• Customizable to your home’s needs
• Automatically balances the power of your home’s electrical load
including high wattage items like air conditioning units and
electric ovens
• Oers whole house power with a more aordable home generator
• Compatible transfer switches and modules sold separately
Generator Set Rating
Liquid Propane Vapor Natural Gas Limited Warranty
Model
040590 Steel 120/24 0 1 60 60 12 50 10.8 45 5 Year
1
This generator is certified in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and CSA (Canadian Standards Association) standard C22.2 No. 100-14 (motors and generators).
2
The installation manual conta ins speci fic instructions relate d to generator placement in addi tion to NFPA 37, including the re quirement t hat carbon monoxide detectors be ins talled and maintaine d in your home .
3
Single pha se units are rated at 1. 0 power factor and thr ee phase units are rate d at 0.8 p ower factor.
4
Se e operato r’s manual o r BRIGGSandSTRATTON.com for complete warranty details.
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Up to 175 mph, when installed in acc ordance with the ins tallatio n manual.
Enclosure
Type
Voltage Phase3Hz
Circuit
Breaker Amps
LPV kW1LPV Amps NG kW
1
NG Amps Parts, Labor, Travel
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Engine Specifications
12kW¹ Standby Generator
Engine
Engine Brand Vanguard
Engine Speed (RPM) 3600
Engine Fuel
Liquid Propane Vapor (LPV) or
Natural Gas (NG)
Engine Cylinder Configuration OHV
Number of Cylinders 2
Displacement (L / Ci) 0.627 / 38.26
Compression Ratio 8.3:1
Governor Type Electronic
Frequency Regulation +/- 0.3 Hz (0.5%)
Valves OHV with Hardened Seats
Ignition System
Fixed Timing Magnetron®
Electric Ignition
Starter Motor Rating Voltage 12 Volt
Battery Required
12 Volt, Group BCI 26 or 51,
540 CCA Minimum
Lubrication
Oil Capacit y (L / qt) 1.3 / 1.37
Low Pressure Switch Included
Lubrication System Full Pressure
Oil Briggs & Stratton 5W30 Full Synthetic
Alternator Specs
Manufacturer Mecc Alte
Type Self-Excited, 4-Lead
Voltage Regulator Automatic
Insulation Class H
Peak Motor Starting kVA 37
Controller Features
Generator Sensing Single phase voltage monitoring
LCD Display Displays multi-line text and graphics
High Temperature Switch Included
Dura-Bore Cast Iron
Cylinder Sleeve
Included
Fault Display Provides up to 39 detailed fault codes
Exercise Cycle
Operations
Fuel Consumption
BTU / hr
ft3 / hr
m3 / hr
g / hr LPV - 2.26 LPV - 1.68 LPV - 0.62
2
Full Load 1/2 L oad No Load
NG - 172,000
LPV - 209,000
NG - 171.6
LPV - 83.3
NG - 4.87
LPV - 2.37
NG - 117,000
LPV - 155,000
NG - 116. 9
LPV - 61.8
NG - 3.31
LPV - 1.76
NG - 66,000
LPV - 57,000
NG - 66
LPV - 22.6
NG - 1.87
LPV - 0.65
Unlike some other standby generator manufacturers, our warranty covers parts, labor AND travel
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for the full length of the warranty with no start-up costs!
Six exercise length options
Default: Start and run for 16 seconds;
Abort exercise below 40° F (internal
temperature)
Sound R atin g At 7 Mete rs
Low Idle Mode 64 dBA
No Load 69 dBA
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1
This generator is certified in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and CSA (Canadian Standards Association) standard C22.2 No. 100-14 (motors and generators).
2
Fuel consumption rates are estimated based on normal operating conditions at ½ load. Generator operation may be greatly affected by elevation and the cycling operation of multiple electrical appliances – fuel flow rates may vary
depending on these factors.
3
See oper ator’s manual or BRIGGSandSTRATTON.com for complete warranty details.
4
Lowest no-load measurement per ISO 3744. Sound level measurement at other locations around generator may be different depending upon installation configuration.
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