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Cummins/Onan QSK78-G7 Generator Set

The Cummins/Onan QSK78-G7 is a 2500 kW (3125 kVA) diesel standby generator set powered by a Cummins/Onan QSK78-G7 engine. It operates at 60 Hz.

2500 kW
Standby
78.0 L
Displacement
2
Document types

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

Typical fuel consumption for 2500–2505 kW Diesel generators →

Compare with other 2500–2505 kW Diesel generators →

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power2500 kW
Standby kVA3125
Prime power2275 kW

Engine

Cummins/Onan QSK78-G7
Displacement78.0 L
AspirationTurbocharged, After-cooled
Rated speed1800 rpm

Service intervals

2
ItemActionHoursMonthsNotes
valve clearanceCheck2000 hrB-Series (4BT3.3): valve clearance checks not required for 2000 hours, twice the industry standard
engine overhaulOther20000 hrQSK23-Series: expected life cycle to 20,000 hours before first overhaul

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 QSK78-G7?

The Cummins/Onan QSK78-G7 is rated 2500 kW standby (3125.0 kVA).

What engine does the Cummins/Onan QSK78-G7 use?

The Cummins/Onan QSK78-G7 is powered by the Cummins/Onan QSK78-G7 engine.

Is the Cummins/Onan QSK78-G7 diesel or gas?

The Cummins/Onan QSK78-G7 runs on diesel.

What is the prime power rating of the Cummins/Onan QSK78-G7?

The Cummins/Onan QSK78-G7 is rated 2275 kW prime (2844 kVA), against 2500 kW standby.

Available documents

Spec sheet — QSK78-G7 (Cummins/Onan)Reference — CUMMINS-GENERATOR-ENGINES-CATALOG (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.