2025 Generac Mobile Stationary Generators MD400
- Year 2025
- Make Generac Mobile
- Model Stationary Generators
2025 Generac Mobile Stationary Generators MD400
2025 Generac Mobile Stationary Generators MD400
Generac offers a wide variety of options, configurations and arrangements, allowing us to meet the power needs of practically every industry and application. Our generators are strong and dependable, meeting UL, NFPA, NEC, ISO and NEMA standards.
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 industrial alternators are machine wound, machine inserted, and machine varnished for the ultimate in consistency.
- Generac engineers its generator controls with safety and convenience as top priorities.
- 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
Perkins
Emissions
EPA Emissions Compliance: Stationary Emergency | EPA Emissions Reference: See Emissions Data Sheet
Cylinder Liners
6
Engine Type
In-Line | Pre-Combustion
Displacement
12.5 in3 (762.80 L)
Bore
130 in (5.12 mm)
Stroke
157 in (6.18 mm)
Compression Ratio
16.3:1
Intake Design
Air Method: Turbocharged/Aftercooled
Governor
Electronic Isochronous
Cooling
Closed Recovery | Closed Coolant Recovery System | UV/Ozone resistant hoses | Factory-Installed Radiator | 50/50 Ethylene glycol antifreeze
Engine Power
Horsepower at Rated kW: 578 hp | Three-Phase 277/480 VAC @0.8pf: 400 kW / 602 Amps | Three-Phase 346/600 VAC @0.8pf: 400 kW / 481 Amps
Rated Engine Speed
1800 RPM
Fuel System
Fuel Type
Ultra Low Sulfur Diesel #2 | Specifications: ASTM
Fuel System
Fuel Filtering (microns): Primary 10 - Secondary 2 | Flexible Fuel Lines | Primary and Secondary Fuel Filters
Fuel Injection
Injection: Electronic | Type: MEUI
Fuel Usage, 100% Load
25%: 9.8 gal/hrt (37.1 l/hr) | 50%: 15.7 gal/hr (63.2 l/hr) | 75%: 23.1 gal/hr (87.4 l/hr) | 100%: 27.8 gal/hr (27.8 l/hr)
Battery
Battery
Size: See Battery Index 0161970SBY | Group: 8D | Voltage: (2) - 12 VDC
Battery Charger Input
Alternator: Std
Electric
Electrical
Coolant Heater Standard Wattage: 1800 Watts | Coolant Heater Standard Voltage: 120 V | System Voltage: 24 VDC | Ground Polarity: Negative
Alternator
Standard Model: 520 mm Generac | Poles: 4 | Field Type: Revolving | Insulation Class - Rotor: H | Insulation Class - Stator: H | Total Harmonic Distortion: <5% | Telephone Interference Factor (TIF): <50 | Standard Excitation: Permanent Magnet | Bearings: Single Sealed Cartridge | Coupling: Direct, Flexible Disc | Load Capacity - Standby: 100% | Voltage Regulator Type: Digital | Number of Sensed Phases: 3 | Regulation Accuracy (Steady State): ±0.25% | Class H insulation material | 2/3 Pitch | Skewed Stator | Permanent Magnet Excitation | Sealed Bearings | Amortisseur winding | Full load capacity alternator
Operational
Operating Conditions
Frequency Regulation (Steady State): +/- 0.25% | Heat Rejection to Coolant: 1,067,520 BTU/hr
Operating Speed
Fan: 1656 RPM | Piston: 1854 ft/min
Operating Temperature, Maximum
Max. Operating Radiator Air Temp: 122 °F (50 °C) | Exhaust Temp (Rated Output - post silencer): 1256 °F (680 °C)
Hydraulics
Pump Type
Oil: Gear | Water: Pre-Lubed, Self Sealing | Fuel : Engine Driven Gear
Oil Filter
Type: Full-Flow
Hydraulic Flow
Total Fuel Pump Flow (Combustion + Return): 159 gal/h (600 l/hr) | Coolant Flow per Minute gal/min (l/min) 106.2 gal/min (402 l/min)
Airflow
Inlet Air: 18,685 cfm (529.1 m3/min) | Flow at Rated Power: 1180 cfm (33.41 m3/min) | Exhaust Flow (Rated Output): 3044 cfm (86.2 m3/min)
Maximum Pressure
Maximum Additional Radiator Backpressure: 0.5 in H2O | BMEP: 369 psi | Max. Backpressure (Post Silencer): 1.5 inHg (5.1 kPa)
Dimensions
Dimensions
Fan Diameter: 927 mm (36.5 in) | Fuel Supply Line: 12.7 mm (1/2” NPT) | Fuel Return Line: 12.7 mm (1/2” NPT) | Fuel Pump Lift: 12 ft (3.7 m) | Exhaust Outlet Size (Open Set). 127 mm(5.0 in)
Capacities
Oil capacity
Crankcase: 38 L (40.15 qts)
Cooling System
Coolant System Capacity: 13 gal (49.2 L)
Features
Features
Cylinder Head Type: 4 - Valve | Fan Type: Pusher | Oil Drain Extension | Air Cleaner | Fan Guard | Critical Exhaust Silencer (Enclosed Only) | Factory Filled Oil | Engine Block Heater | Battery charging alternator | Battery cables | Battery tray | Solenoid activated starter motor | Internal Genset Vibration Isolation | Separation of circuits—high/low voltage | Separation of circuits—multiple breakers | Wrapped Exhaust Piping (enclosed only) | Standard Factory Testing | Silencer mounted in the discharge hood (enclosed only)
Construction Material
Piston Type: Aluminium | Crankshaft Type: Drop Forged Steel | Stainless Steel flexible exhaust connection | Rubber-booted engine electrical connections
Warranty
Warranty
2 Year Limited Warranty (Standby rated Units)