Cummins Onan C1500D6 Specs (Power | Fuel Consumption)

The Cummins Onan C1500D6 generator is listed with standby output of 1500 kW, 60 Hz operation, 4 available voltage configurations, and Single phase / Three phase.

Cummins Onan Generator Specifications

Generator • 60 Hz • Single phase / Three phase

Standby power: 1500 kWVoltage options: 4 configurationsDry weight: 61,729 lb (28,000 kg)

Key specifications

1500 kW Standby power

4 configurations Voltage options

Single phase / Three phase Phase

61,729 lb (28,000 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

24.3 kW

Peer average

55.6 kW

1st percentile

Power output

Low 1,250 kW High 1,500 kW

Standby

1,500 kW

Prime

1,250 kW

Model spec snapshot

Representative numeric specifications from this generator.

1,500 kWStandby

61,729.43 lbWeight

How the Cummins Onan C1500D6 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

1,500 kW

18% below avg

39th percentile

Dry weight

61,729 lb

105% above avg

92nd percentile

Oil capacity

31.7 gal

39% below avg

33rd percentile

Standby power1,500 kW

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

About 18% below the similar-output Cummins Onan average. Around the 39th percentile for this field.

Dry weight61,729 lb

Low 71 lbAverage 30,152 lbHigh 65,094 lb

About 105% above the similar-output Cummins Onan average. Around the 92nd percentile for this field.

Oil capacity31.7 gal

Low 0.28 galAverage 51.88 galHigh 105.14 gal

About 39% below the similar-output Cummins Onan average. Around the 33rd percentile for this field.

This model Peer average

Generator information

Manufacturer	Cummins Onan
Model	C1500D6
Generator type	Generator
Frequency	60 Hz

Electrical output

Standby power	1500 kW
Prime power	1250 kW
Voltage options	240 V, 208 V, 480 V, 600 V
Phase	Single 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	31.7 gal (120 L)
Controller	PowerCommand
Alternator	Cummins/Onan P734-D1
Emissions	Tier I (TPEM)

Physical specifications

Dry weight	61, 729 lb (28, 000 kg)
Dimensions (L × W × H)	480 × 96 × 114 in (12192 × 2438 × 2896 mm)

Battery

Battery group	8D
Battery cranking	1250 / 1500 CCA
Battery voltage	24 V
Battery quantity	4

Fuel system and runtime

Fuel tank	1, 268 gal (4, 800 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.