2025 Generac Mobile Stationary Generators SG350
- Year 2025
- Make Generac Mobile
- Model Stationary Generators
2025 Generac Mobile Stationary Generators SG350
2025 Generac Mobile Stationary Generators SG350
Keep all your business’s essentials up and running with a Generac 350kW generator. Take advantage of a durable enclosure that utilizes the highest level of noise reduction. All of our industrial gas generators are completely cost effective and give you the best value for the output so you can afford more of what you need for your business. Generac is one of North America’s largest suppliers of power generation equipment. For more than five decades, Generac has designed and manufactured diesel, natural gas, and bi-fuel generators that meet the demands of any application.
Features may include:
GENERATOR ENCLOSURE- Generac manufactures its own enclosures, ensuring each unit combines the highest level of durability, noise reduction, weather resistance, and streamlined design.
- Generac builds its spark-ignited engines from the block up utilizing advanced engineering expertise.
- Generac industrial alternators are machine wound, machine inserted, and machine varnished for the ultimate in consistency.
- The Generac Power Zone® Digital Control Platform is a fully integrated and multipurpose family of controllers for Generac’s single genset and Modular Power Systems (MPS) applications.
- Generac's Modular Power Systems (MPS) boast a rate of up to 99.999% reliability, and are more cost-effective and flexible than single generators with the same load capacity.
Engine
Engine Manufacturer
Generac
Cylinder Liners
12
Engine Type
V12
Displacement
1,336.4 in3 (21.9 L)
Bore
5.03 in (128 mm)
Stroke
5.60 in (142 mm)
Compression Ratio
10.0:1
Intake Design
Air Method: Turbocharged/Aftercooled
Ignition
Electronic
Governor
Electronic
Cooling
Pressurized Closed Recovery | Closed Coolant Recovery System | UV/Ozone Resistant Hoses | Factory-Installed Radiator | 50/50 Ethylene Glycol Antifreeze | Radiator Drain Extension
Engine Power
Standby-Demand Response/Prime Horsepower at Rated kW: 516 hp / 464 hp | Standby-Demand Response/Prime Three-Phase 120/208 VAC @0.8pf: 350 kW/438 kVA, 1,216 Amps / 315 kW/394 kVA, 1,094 Amps | Standby-Demand Response/Prime Three-Phase 120/240 VAC @0.8pf: 350 kW/438 kVA, 1,054 Amps / 315 kW/394 kVA, 948 Amps | Standby-Demand Response/Prime Three-Phase 277/480 VAC @0.8pf: 350 kW/438 kVA, 527 Amps / 315 kW/394 kVA, 474 Amps | Standby-Demand Response/Prime Three-Phase 346/600 VAC @0.8pf: 350 kW/438 kVA, 421 Amps / 315 kW/394 kVA, 379 Amps
Rated Engine Speed
Standby-Demand Response/Prime: 1,800 RPM / 1,800 RPM
Fuel System
Fuel Type
Natural Gas
Fuel System
Carburetor: Down Draft | Primary and Secondary Fuel Shutoff
Fuel Usage, 100% Load
Standby-Demand Response/Prime 25%: 1,620 (45.9 m3/hr ) / 1,560 scfh (44.2 m3/hr) | Standby-Demand Response/Prime 50%: 2,400 scfh (68.0 m3/hr) / 2,220 scfh (62.9 m3/hr) | Standby-Demand Response/Prime 75%: 3,240 scfh (91.7 m3/hr) / 3,000 scfh (84.9 m3/hr) | Standby-Demand Response/Prime 100%: 4,140 scfh (117.2 m3/hr) / 3,780 scfh (107.0 m3/hr)
Battery
Battery
Size: See Battery Index 0161970SBY | Voltage: (2) - 12 VDC
Battery Charger Input
Alternator: 57 A
Electric
Electrical
System Voltage: 24 VDC | Ground Polarity: Negative (-)
Alternator
Standard Model: K0350124Y21 | Poles: 4 | Field Type: Revolving | Insulation Class - Rotor. H | Insulation Class - Stator. H | Total Harmonic Distortion: <5% (3-Phase) | Telephone Interference Factor (TIF): <52 | Standard Excitation: Permanent Magnet | Bearings: Sealed Ball | Coupling: Direct via Flexible Disc | Voltage Regulator Type: Full Digital | Regulation Accuracy (Steady State): ±0.25% | UL2200 GENprotect™ | Class H Insulation Material | 2/3 Pitch | Skewed Stator | Permanent Magnet Excitation | Sealed Bearing | Amortisseur Winding | Full Load Capacity Alternator
Operational
Operating Conditions
Frequency Regulation (Steady State): ±0.25%
Operating Speed
Fan: 1,404 RPM | Piston: 1,680 ft/min (512 m/min) / 1,680 ft/min (512 m/min)
Operating Temperature, Maximum
Standby-Demand Response/Prime Maximum Operating Ambient Temperature 122 °F (50 °C) / 122 °F (50 °C) | Standby-Demand Response/Prime Maximum Operating Ambient Temperature (Before Derate): See Bulletin No. 0199270SSD / See Bulletin No. 0199270SSD | Exhaust Temp (Rated Output - Post Silencer): 1,277 °F (691.7 °C) / 1,250 °F (676.7 °C)
Hydraulics
Pump Type
Oil: Gear
Oil Filter
Type: Full-Flow Spin-On Cartridge
Hydraulic Flow
Standby-Demand Response/Prime Coolant Flow: 211 gpm (798.6 Lpm) / 211 gpm (798.6 Lpm)
Airflow
Standby-Demand Response/Prime Air Flow (Fan Air Flow Across Radiator) cfm (m³/min): 28,004 cfm (793 m3/min) / 28,004 cfm (793 m3/min) | Standby-Demand Response/Prime Flow at rated power: 657 cfm (18.6 m3/min) / 598 cfm (16.9 m3/min) | Standby-Demand Response/Prime Exhaust Flow (Rated Output) cfm (m³/min): 2,113 cfm (59.8 m3/min) / 1,894 cfm (53.6 m3/min)
Maximum Pressure
Operating Fuel Pressure: 11 - 14 in H2O (2.7 - 3.5 kPa) | Maximum Additional Radiator Backpressure: 0.5 in H2O (0.12 kPa) / 0.5 in H2O (0.12 kPa) | Standby-Demand Response/Prime BMEP: 170 psi (1,171 kPa) / 153 psi (1,054 kPa)
Dimensions
Dimensions
Fan Diameter: 44 in (1,118 mm)
Length
Open Set (Includes Exhaust Flex): 154.4 in (3,922 mm) | Weather Protected Enclosure: 207.4 in (5,268 mm) | Level 1 Sound Attenuated Enclosure: 247.5 in (6,287 mm) | Level 2 Sound Attenuated Enclosure: 207.4 in (5,268 mm) | Level 3 Sound Attenuated Enclosure: 232.0 in (5,893 mm)
Width
Open Set (Includes Exhaust Flex): 71.0 in (1,804 mm) | Weather Protected Enclosure: 71.0 in (1,803 mm) | Level 1 Sound Attenuated Enclosure: 71.0 in (1,803 mm) | Level 2 Sound Attenuated Enclosure: 71.0 in (1,803 mm) | Level 3 Sound Attenuated Enclosure: 76.9 in (1,953 mm)
Height
Open Set (Includes Exhaust Flex): 66.5 in (1,689 mm) | Weather Protected Enclosure: 80.0 in (2,032 mm) | Level 1 Sound Attenuated Enclosure: 80.0 in (2,032 mm) | Level 2 Sound Attenuated Enclosure: 114.1 in (2,898 mm) | Level 3 Sound Attenuated Enclosure: 129.2 in (3,282 mm)
Capacities
Oil capacity
Engine: 31.7 qt (30 L)
Cooling System
Standby-Demand Response/Prime Coolant Capacity: 15.5 gal (58.7 L) / 15.5 gal (58.7 L)
Weights
Weight
Open Set (Includes Exhaust Flex): 7,286 - 8,650 lbs (3,304 - 3,923 kg) | Weather Protected Enclosure Steel: 9,490 - 10,840 lbs (4,304 - 4,916 kg) | Weather Protected Enclosure Aluminum: 8,404 - 9,753 lb (3,811 - 4,423 kg) | Level 1 Sound Attenuated Enclosure Steel: 10,498 - 11,847 lbs (4,761 - 5,373 kg) | Level 1 Sound Attenuated Enclosure Aluminum: 8,818 - 10,185 lbs (3,999 - 4,619 kg) | Level 2 Sound Attenuated Enclosure Steel: 10,836 - 12,185 lbs (4,914 - 5,526 kg) | Level 2 Sound Attenuated Enclosure Aluminum: 8,963 - 10,330 lbs (4,065 - 4,685 kg) | Level 3 Sound Attenuated Enclosure: 13,224 - 14,285 lbs (5,997 - 6,478 kg)
Features
Features
Number of Main Bearings: 7 | Lifter Type: Solid | Fan Type: Pusher | Oil Drain Extension | Air Cleaner | Engine Coolant Heater | Factory Filled Oil and Coolant | Radiator Duct Adapter (Open Set Only) | Critical Silencer | Battery Charging Alternator | Battery Cables | Battery Tray | Rubber-Booted Engine Electrical Connections | Solenoid Activated Starter Motor | Internal Genset Vibration Isolation | Separation of Circuits - High/Low Voltage | Separation of Circuits - Multiple Breakers | Wrapped Exhaust Piping | Standard Factory Testing |
Construction Material
Connecting Rods: Steel Alloy | Cylinder Head: Cast Iron | Cylinder Liners: Cast Steel Alloy | Intake Valve Material: High Temperature Steel Alloy | Exhaust Valve Material: High Temperature Steel Alloy | Hardened Valve Seats: Proprietary Alloy | Stainless Steel Flexible Exhaust Connection | Silencer Mounted in the Discharge Hood (Enclosed Units Only) | Ready to Accept Full Load in <10 Seconds
Warranty
Warranty
2 Year Limited Warranty (Standby and Demand Response Rated Units) | Year Limited Warranty (Prime Rated Units)