Standard Model
520
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
Sealed Ball
Coupling
Direct, Flexible Disc
Prototype Short Circuit Test
Yes
Voltage Regulator Type
Full Digital
Number of Sensed Phases
5
Regulation Accuracy (Steady State)
+/- 0.25%
General
Make
Generac
Cylinder #
12
Type
V12
Displacement - L (Cu In)
21.9 (1336.42)
Bore - mm (in)
128 (5.03)
Stroke - mm (in)
142 (5.6)
Compression Ratio
10:1
Intake Air Method
Turbocharged/Aftercooled
Number of Main Bearings
7
Connecting Rods
Alloy Steel
Cylinder Head
Cast Iron - OHV
Cylinder Liners
Cast Alloy Steel
Ignition
Altronic CD200D
Pistons
Aluminum Alloy
Crankshaft
Forged Alloy Steel
Lifter Type
Solid
Intake Valve Material
High Temp Alloy Steel
Exhaust Valve Material
High Temp Alloy Steel
Hardened Valve Seats
High Temp Alloy Steel
Engine Governing
Governor
Electronic
Frequency Regulation (Steady State)
(+/-) 0.25%
Lubrication System
Oil Pump Type
Gear
Oil Filter Type
Twin Full flow with intercooler
Crankcase Capacity - L (qts)
30 (31.7)
Cooling System
Cooling System Type
Pressurized Closed Recovery
Water Pump Flow - gpm (lpm)
211 (800)
Fan Type
Pusher
Fan Speed (rpm)
1404
Fan Diameter mm (in)
44
Coolant Heater Wattage
2500
Coolant Heater Standard Voltage
240 V
Fuel System
Fuel Type
Natural Gas
Carburetor
Down Draft
Secondary Fuel Regulator
Standard
Fuel Shut Off Solenoid
Standard (Dual)
Operating Fuel Pressure
11" - 15" H
2
O
Engine Electrical System
System Voltage
24 VDC
Battery Charging Alternator
Std
Battery Size
See Battery Index 0161970SBY
Battery Voltage
(2) 12 VDC
Ground Polarity
Negative
ENGINE SPECIFICATIONS
ALTERNATOR SPECIFICATIONS
SG400
application and engineering data
SG400 400 kW
