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Cummins/Onan C225 D6 Generator Set

The Cummins/Onan C225 D6 is a 205 kW (256 kVA) Diesel standby generator set powered by a Cummins/Onan 6CTA series engine. It is available at 254/440 V, 127/220 V, 277/480 V, 139/240 V, 240/416 V, 115/200 V, 230/400 V, 110/190 V, 120/208 V and 220/380 V, ['A (U)', 'B (V)', 'C (W)'] and 50 Hz. It holds about 23.8 L (6.3 gal) of oil and 26.3 L (6.9 gal) of coolant, with a maximum ambient rating of 77 °C. The set measures 2686×1300×1547 mm (105.7×51.2×60.9 in) and weighs about 1940 kg (4277 lb). An integrated tank holds 360 L (95.1 gal).

205 kW
Standby
8.3 L
Displacement
23.8 L
Oil capacity
1
Document types

How to read your Cummins/Onan serial & model number →

Compare with other 225–230 kW Diesel generators →

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power205 kW
Standby kVA256
Prime power205 kW
ControllerEletronic, PowerCommand
Oil capacity23.8 L
Voltage options254/440 V, 127/220 V, 277/480 V, 139/240 V, 240/416 V, 115/200 V, 230/400 V, 110/190 V, 120/208 V, 220/380 V
PhaseA (U),B (V),C (W)
Power factor0.8
Coolant capacity26.3 L
Max ambient77 °C
Dimensions (L×W×H)2686×1300×1547 mm
Dry weight1940 kg
Fuel tank360.0 L

Engine

Cummins/Onan 6CTA series
Displacement8.3 L
Aspirationturbo charged

Maintenance & consumables

for the Cummins/Onan 6CTA series
ItemSpecCapacityPart #Interval
Air filterMaximum Air Cleaner Restriction: 25.0 in. H2O (6.2 kPa)—
Fuel filter—
Oil filterLube Oil Filter Types: Single spin-on canister-combination full flow with bypass—
BatteryBattery Capacity: 550 amps minimum at ambient temperature of 32°F (0°C)—
Belt—
Coolant29.5 L—
OilLube Oil Filter Types: Single spin-on canister-combination full flow with bypass25.2 L—
Spark plug—

Common questions

What size generator is the Cummins/Onan C225 D6?

The Cummins/Onan C225 D6 is rated 205 kW standby (256.0 kVA).

What engine is in the Cummins/Onan C225 D6?

The Cummins/Onan C225 D6 is powered by the Cummins/Onan 6CTA series engine.

Is the Cummins/Onan C225 D6 diesel or gas?

The Cummins/Onan C225 D6 runs on Diesel.

What is the cooling system capacity of the Cummins/Onan C225 D6?

The Cummins/Onan C225 D6 cooling system holds 26.3 liters (6.9 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the oil capacity of the Cummins/Onan C225 D6?

The Cummins/Onan C225 D6 has an engine oil capacity of 23.8 liters (25.1 US quarts), per the manufacturer specification sheet.

What is the dry weight of the Cummins/Onan C225 D6?

The Cummins/Onan C225 D6 has a dry weight of 1940 kg (4276 lb).

How big is the fuel tank on the Cummins/Onan C225 D6?

The Cummins/Onan C225 D6 has a 360 liter (95 US gallon) fuel tank.

What voltage does the Cummins/Onan C225 D6 produce?

The Cummins/Onan C225 D6 is offered in 254/440 V, 127/220 V, 277/480 V, 139/240 V, 240/416 V, 115/200 V, A (U),B (V),C (W)-phase.

Parts

11
Part #DescriptionQtySystem
X-577-34Hose 24"1Hose Amazon eBay
X-577-39Hose 4"1Hose Amazon eBay
X-577-43Hose 50"1Hose Amazon eBay
X-797-2Hose, flex1Hose Amazon eBay
X-797-3Hose, flex1Hose Amazon eBay
285054Silencer Residential R-M (Table 3)1Service part / kit Amazon eBay $79.70
285086Silencer Industrial I-N (Table 3)1Service part / kit Amazon eBay
290485Silencer Residential R-BM (Table 3)1Service part / kit Amazon eBay
290486Silencer Residential R-N (Table 3)1Service part / kit Amazon eBay
290489Silencer Critical C-M (Table 3)1Service part / kit Amazon eBay
290490Silencer Critical C-N (Table 3)1Service part / kit Amazon eBay

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
Standby69.018.23

Available documents

Spec sheet — APS-5945-EN (Cummins/Onan)Spec sheet — C225D6 EN (Cummins/Onan)Spec sheet — SS8-CPGK (Cummins/Onan)

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.