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Kohler 7M4046 Generator Set

The Kohler 7M4046 is a 1180 kW (1475 kVA) Diesel standby generator set powered by a Mitsubishi S12R-Y2PTAW-1 engine. It is available at 220/380 V, 240/416 V and 277/480 V, 3-phase, 60 Hz and rated 2047 A. It holds about 150 L (39.6 gal) of oil and 327 L (86.4 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 4 group-Four batteries rated 1150 CCA at 24 V. The same S12R-Y2PTAW-1 engine also powers generator sets from Generac and Igsa.

1180 kW
Standby
49.0 L
Displacement
150.0 L
Oil capacity
2
Document types

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power1180 kW
Standby kVA1475
Prime power1110 kW
EmissionsTier 2 EPA-Certified
ControllerKohler designed controllers
Oil capacity150.0 L
Alternator7M4046 (4-pole, Class Class H insulation)
Voltage options220/380 V, 240/416 V, 277/480 V
Phase3
Rated current2047 A
Power factor0.8
Circuit breaker1785 A
Battery groupFour
Battery cranking1150 CCA
Battery voltage24 V
Battery quantity4
Coolant capacity327.0 L
Engine jacket water130.0 L
Max ambient40 °C

Engine

Mitsubishi S12R-Y2PTAW-1
Oil capacity150.0 L
Coolant capacity130.0 L
Displacement49.0 L
AspirationTurbocharged
Rated speed1800 rpm

Same engine, other brands

2 brands

The Mitsubishi S12R-Y2PTAW-1 in this set also powers 2 generator sets sold under 2 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
GeneracIDLC1250
IgsaGSMI21250L-UL

Maintenance & consumables

for the Mitsubishi S12R-Y2PTAW-1
ItemSpecCapacityPart #Interval
Air filterDry—180 hr
Fuel filter4, Secondary×4—180 hr
Oil filter4, Cartridge×4—180 hr
BatteryFour, 1150—180 hr
BeltFlexible Disc—180 hr
Spark plugN/A—180 hr

Common questions

What is the power rating of the Kohler 7M4046?

The Kohler 7M4046 is rated 1180 kW standby (1475.0 kVA).

What engine does the Kohler 7M4046 use?

The Kohler 7M4046 is powered by the Mitsubishi S12R-Y2PTAW-1 engine.

What kind of fuel does the Kohler 7M4046 run on?

The Kohler 7M4046 runs on Diesel.

What is the oil capacity of the Kohler 7M4046?

The Mitsubishi S12R-Y2PTAW-1 engine in the Kohler 7M4046 has an oil capacity of 150.0 liters.

How much coolant does the Kohler 7M4046 hold?

The Kohler 7M4046 cooling system holds 327 liters (86.4 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the Kohler 7M4046?

The Kohler 7M4046 is rated 1110 kW prime (1388 kVA), against 1180 kW standby.

What voltages is the Kohler 7M4046 available in?

The Kohler 7M4046 is offered in 220/380 V, 240/416 V, 277/480 V, 3-phase.

How many cold cranking amps does the Kohler 7M4046 require?

The Kohler 7M4046 uses 4 batteryies, 24 V each, 1150 CCA, group Four, per the manufacturer specification sheet.

What alternator comes on the Kohler 7M4046?

The Kohler 7M4046 uses a 7M4046 alternator. It has 4 poles. Insulation class Class H.

Fuel consumption

RatingLoadL/hgal/h
Prime25%103.027.1
Prime50%172.045.4
Prime75%241.063.7
Prime100%319.084.4
Standby25%104.027.6
Standby50%184.048.6
Standby75%263.069.4
Standby100%392.0103.4

Available documents

Spec sheet — g5362 (Kohler)Spec sheet — g5366 (Kohler)Service manual — adv8176 (Kohler)

This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.