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Cummins/Onan C1000D6RG Generator Set

The Cummins/Onan C1000D6RG is a 1000 kW (1250 kVA) Diesel (No. 2 diesel fuel) standby generator set powered by a Cummins/Onan QST30-G5 engine. It is available at 208 V, 480 V and 600 V, 60 Hz. It holds about 154 L (162.7 US qt) of oil and 202.5 L (53.5 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 4 group-8 batteries rated 1250 CCA at 24 V. The set measures 9119×2438×2896 mm (359.0×96.0×114.0 in), weighs about 15594 kg (34379 lb) and produces 75 dBA at 7 m. An integrated tank holds 6450 L (1703.9 gal), roughly 31 hours of runtime. The same QST30-G5 engine also powers generator sets from Katolight.

1000 kW
Standby
30.0 L
Displacement
154.0 L
Oil capacity
1
Document types

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

Typical fuel consumption for 1000–1005 kW Diesel generators →

Compare with other 1000–1005 kW Diesel generators →

Service parts for the C1000D6RG

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel (No. 2 diesel fuel)
Frequency60.0 Hz
Standby power1000 kW
Standby kVA1250
Prime power900 kW
EmissionsTPEM (Tier 2)
ControllerPowerCommand 3.3
Oil capacity154 L (162.7 US qt)
AlternatorStamford/AvK HCI634K (4-pole, Class Class H per NEMA MG1-1.65 insulation)
Voltage options208 V, 480 V, 600 V
Circuit breaker3000 A
Battery group8D
Battery cranking1250 CCA
Battery voltage24 V
Battery quantity4
Max ambient50 °C
Dimensions (L×W×H)9119×2438×2896 mm
Dry weight15594 kg
Wet weight21182 kg
Sound level75.0 dBA @ 7 m
Fuel tank6450.0 L
Tank runtime31 hr

Engine

Cummins/Onan QST30-G5
Oil capacity154 L (162.7 US qt)
Coolant capacity202.5 L
Displacement30.0 L
AspirationTurbocharged and low temperature after-cooled
Rated speed1800 rpm

Filters for the Cummins/Onan QST30-G5

4

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Oil filterP551670Lube Filter, Spin-On Full FlowCUMMINS 298670, CUMMINS 299670, NAPA 1970, CARBOCOL 0026 FridayParts $26.68
Oil filterP559000Lube Filter, Spin-On Full FlowCUMMINS 2101869, CUMMINS 2882674, NAPA 400107, BALDWIN BD7154 KuduParts $17.00 FridayParts $36.00
Fuel / water separatorP552216Fuel Filter, Water Separator Spin-On Twist&DrainCUMMINS 3309437, CUMMINS 3313304, NAPA 3613, BALDWIN BF1216 buy
Fuel / water separatorP552006Fuel Filter, Water Separator Spin-On Twist&DrainCUMMINS 3089916, CUMMINS 4095189, NAPA 3645, BALDWIN BF1262 FridayParts $42.88

Same engine, other brands

1 brand

The Cummins/Onan QST30-G5 in this set also powers 5 generator sets sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
KatolightD1000FJZ4, D1000FNZ4, D1000FPZ4, D1000FRZ4, D1000FSZ4

Maintenance & consumables

for the Cummins/Onan QST30-G5
ItemSpecCapacityPart #Interval
Air filterD041-2 eBay
Fuel filter—
Oil filter—
Battery—250 hr
Belt—
Coolant167.0—6000 hr
Coolant filter—1500 hr
Oil154 L (162.7 US qt)—
Spark plug—

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
FuelNo. 2 dieselDirect injection fuel system

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 is the power rating of the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG is rated 1000 kW standby (1250.0 kVA).

What engine is in the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG is powered by the Cummins/Onan QST30-G5 engine.

What kind of fuel does the Cummins/Onan C1000D6RG run on?

The Cummins/Onan C1000D6RG runs on Diesel (No. 2 diesel fuel).

How much oil does the Cummins/Onan C1000D6RG take?

The Cummins/Onan C1000D6RG takes 154 L (162.7 US qt) of engine oil, per Cummins 1000 kW QST30 G5 engine rental power spec sheet.

What is the cooling system capacity of the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG cooling system holds 202.5 liters (53.5 US gallons) for the engine, per the manufacturer specification sheet.

What is the prime power rating of the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG is rated 900 kW prime (1125 kVA), against 1000 kW standby.

How loud is the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG is rated at 75.0 dBA at 7 m, per the manufacturer specification sheet.

What is the dry weight of the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG has a dry weight of 15594 kg (34378 lb).

How big is the fuel tank on the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG has a 6450 liter (1704 US gallon) fuel tank, giving about 31 hours of runtime.

What voltage does the Cummins/Onan C1000D6RG produce?

The Cummins/Onan C1000D6RG is offered in 208 V, 480 V, 600 V.

How many cold cranking amps does the Cummins/Onan C1000D6RG require?

The Cummins/Onan C1000D6RG uses 4 batteryies, 24 V each, 1250 CCA, group 8D, per the manufacturer specification sheet.

Which alternator is fitted to the Cummins/Onan C1000D6RG?

The Cummins/Onan C1000D6RG uses a Stamford/AvK HCI634K alternator. It has 4 poles. Insulation class Class H per NEMA MG1-1.65.

What air filter does the Cummins/Onan C1000D6RG use?

The Cummins/Onan C1000D6RG uses air filter part number D041-2.

Parts

1
Part #DescriptionQtySystem
CC2609Fleetguard Water-Check H2O 3-Way Test Strips1Service 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
Prime25%65.517.3
Prime50%121.532.1
Prime75%179.847.5
Prime100%241.963.9
Standby25%72.319.1
Standby50%135.535.8
Standby75%204.854.1
Standby100%273.372.2

Source — consumption: Cummins 1000 kW QST30 G5 engine rental power spec sheet.

Available documents

Spec sheet — Cummins 1000 kW QST30 G5 engine rental power spec sheet (Cummins/Onan)

This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.