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Kohler 400RZX Generator Set

The Kohler 400RZX is a 400 kW (500 kVA) natural gas / LP standby generator set powered by a Doosan D219TIC engine. It is available at 120 V, 208 V, 127 V, 220 V, 139 V, 240 V, 380 V, 416 V, 277 V, 480 V, 110 V, 190 V, 115 V, 200 V, 230 V and 400 V, 3-phase and 60 Hz. It holds about 40 L (10.6 gal) of oil and 242 L (63.9 gal) of coolant. Starting uses 2 batteries rated 925 CCA.

400 kW
Standby
21.9 L
Displacement
40.0 L
Oil capacity
4
Document types

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Specifications

Fuelnatural gas / LP
Frequency60.0 Hz
Standby power400 kW
Standby kVA500
Prime power360 kW
ControllerAPM603
Oil capacity40.0 L
Alternator5M4027
Voltage options120 V, 208 V, 127 V, 220 V, 139 V, 240 V, 380 V, 416 V, 277 V, 480 V, 110 V, 190 V, 115 V, 200 V, 230 V, 400 V
Phase3
Power factor0.8
Battery cranking925 CCA
Battery quantity2

Engine

Doosan D219TIC
Oil capacity47.1 L
Coolant capacity242.0 L
Displacement21.9 L
AspirationTurbocharged, Charge Air-Cooled
Rated speed1800 rpm

Maintenance & consumables

for the Doosan D219TIC
ItemSpecCapacityPart #Interval
Oil filter×2
Oil47.1 L

Service specifications

30
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.

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 400RZX?

The Kohler 400RZX is rated 400 kW standby (500.0 kVA).

What engine is in the Kohler 400RZX?

The Kohler 400RZX is powered by the Doosan D219TIC engine.

What fuel type does the Kohler 400RZX take?

The Kohler 400RZX runs on natural gas / LP.

What is the oil capacity of the Kohler 400RZX?

The Doosan D219TIC engine in the Kohler 400RZX has an oil capacity of 47.1 liters.

What alternator does the Kohler 400RZX use?

The Kohler 400RZX uses a 5M4027 alternator.

Fuel consumption

RatingLoadL/hgal/h
Prime25%37.79.96
Prime50%60.515.98
Prime75%85.122.48
Prime100%109.228.85
Standby25%40.010.57
Standby50%65.617.33
Standby75%93.424.67
Standby100%119.831.65

Available documents

Spec sheet (Kohler)Spec sheet — g4302 (Kohler)Reference (Kohler)Reference — 180-450REZX G6109 (Kohler)Reference — 300-500REZX G6178 (Kohler)Reference — G6-39 0918AZ (Kohler)Reference — Kohler-Gas Generators Brochure (Kohler)Parts manual — tp6706 (Kohler)Service manual — TP-6832 1218G (Kohler)
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