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Cummins/Onan C120D5 Generator Set

The Cummins/Onan C120D5 is a 96 kW (120 kVA) Diesel standby generator set powered by a Cummins/Onan 6BT5.9G6 engine. It is available at 255/440 V, 230/400 V, 220/380 V, 127/220 V and 277/480 V, 3-phase, 50 Hz and rated 95 A. It holds about 16.4 L (4.3 gal) of oil and 100 L (26.4 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 1 group-100 battery at 12 V. The set measures 2220×1050×1572 mm (87.4×41.3×61.9 in), weighs about 1135 kg (2502 lb) and produces 85 dBA at 1 m. An integrated tank holds 250 L (66.0 gal), roughly 10 hours of runtime.

96 kW
Standby
5.88 L
Displacement
16.4 L
Oil capacity
1
Document types

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Typical fuel consumption for 95–100 kW Diesel generators →

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Specifications

FuelDiesel
Frequency50.0 Hz
Standby power96 kW
Standby kVA120
Prime power87 kW
EmissionsTier 1
ControllerPowerCommand
Oil capacity16.4 L
Alternator6BTA5.9-G6 (2-pole, Class H insulation)
Voltage options255/440 V, 230/400 V, 220/380 V, 127/220 V, 277/480 V
Phase3
Rated current95 A
Power factor0.8
Circuit breaker95 A
Battery group100 AH
Battery voltage12 V
Battery quantity1
Coolant capacity100.0 L
Max ambient40 °C
Dimensions (L×W×H)2220×1050×1572 mm
Dry weight1135 kg
Wet weight1925 kg
Sound level85.0 dBA @ 1 m
Fuel tank250.0 L
Tank runtime10 hr

Engine

Cummins/Onan 6BT5.9G6
Coolant capacity100.0 L
Displacement5.88 L
AspirationTurbocharged
Rated speed1500 rpm

Maintenance & consumables

for the Cummins/Onan 6BT5.9G6
ItemSpecCapacityPart #Interval
Air filterNormal duty air filter.—
Fuel filterOil and fuel filter fitted, water separator.—
Oil filterOil and fuel filter fitted, water separator.—
Battery460 amps minimum at ambient temperature of 32°F (0°C)×1—
BeltN/A—
CoolantCoolant capacity (engine and radiator)24.6 l—
OilLubrication system oil capacity16.4 l—
Spark plugN/A—

Common questions

How many kW is the Cummins/Onan C120D5?

The Cummins/Onan C120D5 is rated 96 kW standby (120.0 kVA).

What engine does the Cummins/Onan C120D5 use?

The Cummins/Onan C120D5 is powered by the Cummins/Onan 6BT5.9G6 engine.

Is the Cummins/Onan C120D5 diesel or gas?

The Cummins/Onan C120D5 runs on Diesel.

What is the coolant capacity of the Cummins/Onan C120D5?

The Cummins/Onan C120D5 cooling system holds 100 liters (26.4 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the oil capacity of the Cummins/Onan C120D5?

The Cummins/Onan C120D5 has an engine oil capacity of 16.4 liters (17.3 US quarts), per the manufacturer specification sheet.

What is the continuous rating of the Cummins/Onan C120D5?

The Cummins/Onan C120D5 is rated 87 kW prime (109 kVA), against 96 kW standby.

How loud is the Cummins/Onan C120D5?

The Cummins/Onan C120D5 is rated at 85.0 dBA at 1 m, per the manufacturer specification sheet.

What is the dry weight of the Cummins/Onan C120D5?

The Cummins/Onan C120D5 has a dry weight of 1135 kg (2502 lb).

How big is the fuel tank on the Cummins/Onan C120D5?

The Cummins/Onan C120D5 has a 250 liter (66 US gallon) fuel tank, giving about 10 hours of runtime.

What voltage does the Cummins/Onan C120D5 produce?

The Cummins/Onan C120D5 is offered in 255/440 V, 230/400 V, 220/380 V, 127/220 V, 277/480 V, 3-phase.

How many cold cranking amps does the Cummins/Onan C120D5 require?

The Cummins/Onan C120D5 uses 1 battery, 12 V each, group 100 AH, per the manufacturer specification sheet.

Which alternator is fitted to the Cummins/Onan C120D5?

The Cummins/Onan C120D5 uses a 6BTA5.9-G6 alternator. It has 2 poles. Insulation class H.

Fuel consumption

RatingLoadL/hgal/h
Prime24.06.34
Prime75%1.55.7
Standby27.07.13
Standby75%1.55.7

Available documents

Spec sheet — C120D5 EN (Cummins/Onan)Spec sheet — S-6319-EN (Cummins/Onan)

This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.