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Kohler 300REOZDD Generator Set

The Kohler 300REOZDD is a 300 kW (375 kVA) Diesel standby generator set powered by a Detroit Diesel S60 engine. It is available at 120/208 V, 120/240 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 1041 A. It holds about 30 L (7.9 gal) of oil and 45.4 L (12.0 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 2 batteries rated 950 CCA at 12 V. The set measures 3500×1250×1941 mm (137.8×49.2×76.4 in).

300 kW
Standby
12.7 L
Displacement
30.0 L
Oil capacity
3
Document types

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Typical fuel consumption for 300–305 kW Diesel generators →

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power300 kW
Standby kVA375
Prime power270 kW
EmissionsTier 3
ControllerDecision-Maker 550 (also Decision-Maker 3+
Oil capacity30.0 L
Alternator4UA13 (4-pole, Class Class H insulation)
Voltage options120/208 V, 120/240 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V, 347/600 V
Phase3
Rated current1041 A
Power factor0.8
Battery cranking950 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity45.4 L
Engine jacket water22.7 L
Max ambient50 °C
Dimensions (L×W×H)3500×1250×1941 mm
Wet weight2903 kg

Engine

Detroit Diesel S60
Oil capacity30.0 L
Coolant capacity22.7 L
Displacement12.7 L
AspirationTurbocharged, Aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Detroit Diesel S60
ItemSpecCapacityPart #Interval
Air filterClean/Replace500 hr
Fuel filterPrimary/Secondary250 hr
Oil filterCartridge250 hr
BatteryReplace250 hr
BeltReplace250 hr
CoolantCheck/Clean45.4250 hr
Coolant filter50 hr
Oil36.0 L50 hr
Spark plugCheck/Replace250 hr

Service specifications

31
TypeItemValueUnitCondition
Other10 in. weld flange bolt circle diameter B361.95mm (14.25 in.)
Other10 in. weld flange outside diameter C406.4mm (16.0 in.)
Other10 in. weld flange quantity of bolts / bolt hole diameter D12, 25.40mm (1.00 in.)
Other12 in. weld flange bolt circle diameter B431.80mm (17.00 in.)
Other12 in. weld flange outside diameter C482.6mm (19.0 in.)
Other12 in. weld flange quantity of bolts / bolt hole diameter D12, 25.40mm (1.00 in.)
Other14 in. weld flange bolt circle diameter B476.25mm (18.75 in.)
Other14 in. weld flange outside diameter C533.4mm (21.0 in.)
Other14 in. weld flange quantity of bolts / bolt hole diameter D12, 28.58mm (1.13 in.)
Other16 in. weld flange bolt circle diameter B539.75mm (21.25 in.)
Other16 in. weld flange outside diameter C596.9mm (23.5 in.)
Other16 in. weld flange quantity of bolts / bolt hole diameter D16, 28.58mm (1.13 in.)
Other18 in. weld flange bolt circle diameter B577.85mm (22.75 in.)
Other18 in. weld flange outside diameter C635.0mm (25.0 in.)
Other18 in. weld flange quantity of bolts / bolt hole diameter D16, 31.75mm (1.25 in.)
Other20 in. weld flange bolt circle diameter B635.00mm (25.00 in.)
Other20 in. weld flange outside diameter C698.5mm (27.5 in.)
Other20 in. weld flange quantity of bolts / bolt hole diameter D20, 31.75mm (1.25 in.)
Other5 in. weld flange bolt circle diameter B215.90mm (8.50 in.)
Other5 in. weld flange outside diameter C241.30mm (9.50 in.)
Other5 in. weld flange quantity of bolts / bolt hole diameter D8, 22.23mm (0.88 in.)
Other6 in. weld flange bolt circle diameter B254.0mm (10.0 in.)
Other6 in. weld flange outside diameter C279.4mm (11.0 in.)
Other6 in. weld flange quantity of bolts / bolt hole diameter D8, 22.23mm (0.88 in.)
Other8 in. weld flange bolt circle diameter B298.45mm (11.75 in.)
Other8 in. weld flange outside diameter C342.9mm (13.5 in.)
Other8 in. weld flange quantity of bolts / bolt hole diameter D8, 22.23mm (0.88 in.)
OtherWeld flange angle A (10, 12, 14 in. nominal pipe size)30deg.
OtherWeld flange angle A (16, 18, 20 in. nominal pipe size)22.5deg.
OtherWeld flange angle A (5, 6, 8 in. nominal pipe size)45deg.
PressureMaximum allowable exhaust back pressure10.2kPaat rated kW, dry exhaust

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
Fuel#2 DieselRecommended fuel #2 Diesel; max fuel flow 329 Lph (86.8 gph); supply line min ID 13 mm (0.50 in.), return line min ID 8 mm (0.31 in.); max lift 2.1 m (6.8 ft.)

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Voltage reconnection

VoltagePhaseConnectionLeadsNotes
120/208312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 1041 A; Prime 270 kW/338 kVA, 937 A
120/240312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 902 A; Prime 270 kW/338 kVA, 812 A
127/220312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 984 A; Prime 270 kW/338 kVA, 886 A
139/240312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 902 A; Prime 270 kW/338 kVA, 812 A
220/380312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 280 kW/350 kVA, 532 A; Prime 255 kW/319 kVA, 484 A
240/416312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 520 A; Prime 270 kW/338 kVA, 468 A
277/480312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 451 A; Prime 270 kW/338 kVA, 406 A
347/600312, Reconnectable60 Hz, 3-phase, 0.8 PF; Standby 300 kW/375 kVA, 361 A; Prime 270 kW/338 kVA, 325 A

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What size generator is the Kohler 300REOZDD?

The Kohler 300REOZDD is rated 300 kW standby (375.0 kVA).

What engine is in the Kohler 300REOZDD?

The Kohler 300REOZDD is powered by the Detroit Diesel S60 engine.

What fuel does the Kohler 300REOZDD use?

The Kohler 300REOZDD runs on Diesel.

How much oil does the Kohler 300REOZDD take?

The Detroit Diesel S60 engine in the Kohler 300REOZDD has an oil capacity of 30.0 liters.

What is the coolant capacity of the Kohler 300REOZDD?

The Kohler 300REOZDD cooling system holds 45.4 liters (12.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the Kohler 300REOZDD?

The Kohler 300REOZDD is rated 270 kW prime (338 kVA), against 300 kW standby.

What voltage does the Kohler 300REOZDD produce?

The Kohler 300REOZDD is offered in 120/208 V, 120/240 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 3-phase.

What size battery does the Kohler 300REOZDD need?

The Kohler 300REOZDD uses 2 batteryies, 12 V each, 950 CCA, per the manufacturer specification sheet.

Which alternator is fitted to the Kohler 300REOZDD?

The Kohler 300REOZDD uses a 4UA13 alternator. It has 4 poles. Insulation class Class H.

Parts

9
Part #DescriptionQtySystem
279261Filter, fuel1Fuel filter Amazon $37.36 eBay $292.07 KuduParts $42.00
360AWire size1Wire Amazon eBay FridayParts $193.96
440AWire size1Wire Amazon eBay FridayParts $20.50
F1-5Fuse 4A1Fuse Amazon Amazon eBay eBay
GM13224Filter, oil1Oil filter Amazon eBay $60.00
GM30594Filter, fuel, secondary1Fuel filter Amazon $109.99 eBay $60.00 KuduParts $59.00
P1-3Amperemeter1Ammeter Amazon eBay
Q1.1Main circuit breaker1Breaker buy
T1-3Current transformer1Transformer Amazon eBay KuduParts $43.00

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime25%24.66.5
Prime50%43.911.6
Prime75%65.517.3
Prime100%85.922.7
Standby25%27.67.3
Standby50%51.913.7
Standby75%76.520.2
Standby100%96.125.4

Available documents

Spec sheet — Kohler-300REOZDD-spec-sheet (Kohler)Reference — G6-39 0918AZ (Kohler)Service manual — tp6354 (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.