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Cummins/Onan C1500 D6RG Generator Set

The Cummins/Onan C1500 D6RG is a 1500 kW (1875 kVA) Diesel standby generator set powered by a Cummins/Onan QSK50-G4 engine. It is available at 480 V and 600 V, 3-phase, 60 Hz and rated 2255 A. It holds about 235 L (62.1 gal) of oil and 113 L (29.9 gal) of coolant, with a maximum ambient rating of 45 °C. Starting uses 4 group-8 batteries rated 1250 CCA at 24 V. The set measures 2438×2896×26880 mm (96.0×114.0×1058.3 in), weighs about 32105 kg (70779 lb) and produces 74 dBA at 7 m. An integrated tank holds 6174 L (1631.0 gal), roughly 20 hours of runtime. The same QSK50-G4 engine also powers generator sets from MQ Power.

1500 kW
Standby
50.3 L
Displacement
235.0 L
Oil capacity
1
Document types

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

Typical fuel consumption for 1500–1505 kW Diesel generators →

Compare with other 1500–1505 kW Diesel generators →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power1500 kW
Standby kVA1875
Prime power1350 kW
EmissionsTPEM (Tier 2)
ControllerPowerCommand, PowerCommand 3.3
Oil capacity235.0 L
AlternatorStamford/AvK PI734C
Voltage options480 V, 600 V
Phase3
Rated current2255 A
Circuit breaker2500 A
Battery group8D (qty: 4)
Battery cranking1250 CCA
Battery voltage24 V
Battery quantity4
Coolant capacity113.0 L
Max ambient45 °C
Dimensions (L×W×H)2438×2896×26880 mm
Dry weight32105 kg
Sound level74.0 dBA @ 7 m
Fuel tank6174.0 L
Tank runtime20 hr

Engine

Cummins/Onan QSK50-G4
Oil capacity235.0 L
Coolant capacity113.0 L
Displacement50.3 L
AspirationTurbocharged and low temperature after-cooled
Rated speed113 rpm

Filters for the Cummins/Onan QSK50-G4

1

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
Fuel / water separatorP550849Fuel Filter, Water Separator CartridgeCUMMINS 3944901S, NAPA 3763, BALDWIN PF7928, DAVCO 102526 FridayParts $20.90 KuduParts $39.00

Same engine, other brands

1 brand

The Cummins/Onan QSK50-G4 in this set also powers 1 generator set sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
MQ Power1500 kW Containerized Diesel Generator Set

Maintenance & consumables

for the Cummins/Onan QSK50-G4
ItemSpecCapacityPart #Interval
Air filterDry, Dual Element—
Fuel filter98% Efficiency—
Oil filterFull Pressure System 5 Spin-on Full Flow—222 hr
Battery1800 CCA×4—
BeltBelt Driven, Centrifugal—
CoolantStandard Horizontal140.0 L—
FuelASTM-D975/No.1 or No.2-D—
OilFull Pressure System 5 Spin-on Full Flow235.0 L—
Spark plug—

Common questions

What is the power rating of the Cummins/Onan C1500 D6RG?

The Cummins/Onan C1500 D6RG is rated 1500 kW standby (1875.0 kVA).

What engine is in the Cummins/Onan C1500 D6RG?

The Cummins/Onan C1500 D6RG is powered by the Cummins/Onan QSK50-G4 engine.

What fuel does the Cummins/Onan C1500 D6RG use?

The Cummins/Onan C1500 D6RG runs on Diesel.

What is the oil capacity of the Cummins/Onan C1500 D6RG?

The Cummins/Onan QSK50-G4 engine in the Cummins/Onan C1500 D6RG has an oil capacity of 235.0 liters.

What is the coolant capacity of the Cummins/Onan C1500 D6RG?

The Cummins/Onan C1500 D6RG cooling system holds 113 liters (29.9 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the Cummins/Onan C1500 D6RG?

The Cummins/Onan C1500 D6RG is rated 1350 kW prime (1688 kVA), against 1500 kW standby.

How loud is the Cummins/Onan C1500 D6RG?

The Cummins/Onan C1500 D6RG is rated at 74.0 dBA at 7 m, per the manufacturer specification sheet.

How much does the Cummins/Onan C1500 D6RG weigh?

The Cummins/Onan C1500 D6RG has a dry weight of 32105 kg (70779 lb).

What size fuel tank does the Cummins/Onan C1500 D6RG have?

The Cummins/Onan C1500 D6RG has a 6174 liter (1631 US gallon) fuel tank, giving about 20 hours of runtime.

What voltages is the Cummins/Onan C1500 D6RG available in?

The Cummins/Onan C1500 D6RG is offered in 480 V, 600 V, 3-phase.

What battery does the Cummins/Onan C1500 D6RG use?

The Cummins/Onan C1500 D6RG uses 4 batteryies, 24 V each, 1250 CCA, group 8D (qty: 4), per the manufacturer specification sheet.

What alternator comes on the Cummins/Onan C1500 D6RG?

The Cummins/Onan C1500 D6RG uses a Stamford/AvK PI734C alternator.

Parts

11
Part #DescriptionQtySystem
140-3963Cleaner, Air (Spec A-C Metal)2Air filter Amazon
149-2792Filter, Fuel1Fuel filter Amazon eBay
501-0970-01Line, Fuel1Hose Amazon eBay
503-1705Hose, Hump2Hose Amazon eBay
503-2754-01Hose, Oil1Hose Amazon eBay
503-2754-02Hose, Oil1Hose Amazon eBay
543-0088Package, Fuel Filter1Fuel filter Amazon eBay
6794600Washer, Sealing1Seal Amazon eBay
AF2559300Air Cleaner replacement element (Nelson), for Air Cleaner Housing 140-37371Air filter Amazon eBay
102-1335Plug, Oil Drain1Service part / kit Amazon eBay
140-1548Indicator, Service1Service part / kit Amazon eBay $49.99 NAPA $32.16

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
Prime110.029.0
Standby121.032.0

Available documents

Spec sheet — 1500kws-1610 (Cummins/Onan)Spec sheet — NAS-6124-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.