Cummins Onan CS1900-6 Specs (Power | Fuel Consumption)

The Cummins Onan CS1900-6 generator is listed with standby output of 1545 kW, Diesel fuel, 60 Hz operation, 220 V, 480 V output, and Three phase.

Cummins Onan Generator Specifications

Generator • Diesel • 60 Hz • Three phase

Standby power: 1545 kWVoltage options: 220 V, 480 VDry weight: 25,441 lb (11,540 kg)

Key specifications

1545 kW Standby power

Diesel Fuel

220 V, 480 V Voltage options

Three phase Phase

25,441 lb (11,540 kg) Dry weight

60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Power-to-weight

Standby output per 1,000 lb of dry weight versus similar-output Cummins Onan models.

This model

60.7 kW

Peer average

55.6 kW

82nd percentile

Power output

Low 1,286 kW High 1,545 kW

Standby

1,545 kW

Prime

1,286 kW

Model spec snapshot

Representative numeric specifications from this generator.

1,545 kWStandby

25,441.35 lbWeight

How the Cummins Onan CS1900-6 compares

This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.

Standby power

1,545 kW

16% below avg

45th percentile

Dry weight

25,441 lb

16% below avg

39th percentile

Oil capacity

53.89 gal

4% above avg

53rd percentile

Standby power1,545 kW

Low 1,000 kWAverage 1,831.9 kWHigh 3,562 kW

About 16% below the similar-output Cummins Onan average. Around the 45th percentile for this field.

Dry weight25,441 lb

Low 71 lbAverage 30,152 lbHigh 65,094 lb

About 16% below the similar-output Cummins Onan average. Around the 39th percentile for this field.

Oil capacity53.89 gal

Low 0.28 galAverage 51.88 galHigh 105.14 gal

About 4% above the similar-output Cummins Onan average. Around the 53rd percentile for this field.

This model Peer average

Generator information

Manufacturer	Cummins Onan
Model	CS1900-6
Generator type	Generator
Fuel	Diesel
Frequency	60 Hz

Electrical output

Standby power	1545 kW
Prime power	1286 kW
Standby kVA	1931.0
Voltage options	220 V, 480 V
Phase	Three phase
Circuit breaker	2500 A

Engine, cooling and controls

Engine model	Cummins/Onan KTA50-G9
Engine displacement	3, 069 cu in (50.3 L)
Aspiration / cooling	Turbocharged and low temperature aftercooled
Rated engine speed	1800 rpm
Engine oil capacity	31.7 gal (120 L)
Engine coolant capacity	137.6 gal (521 L)
Oil capacity	53.9 gal (204 L)
Coolant capacity	137.6 gal (521 L)
Maximum ambient	104 °F (40 °C)
Controller	PCL

Physical specifications

Dry weight	25, 441 lb (11, 540 kg)
Dimensions (L × W × H)	39.4 × 41.3 × 59.1 in (1000 × 1050 × 1500 mm)

Fuel system and runtime

Fuel tank	528.3 gal (2, 000 L)

Maintenance and service parts

Engine oil	Specification: Cummins Heavy-Duty Engine – Rugged 4-cycle industrial diesel delivers reliable power, low emissions, and fast response to load changes.
Oil filter	Specification: Five spin-on, full flow
Coolant	Specification: 104oF (40oC) ambient radiator

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.