HomeCummins/OnanCummins/Onan RS 12000

Cummins/Onan RS 12000 Generator Set

The Cummins/Onan RS 12000 is a 10 kW (10 kVA) Natural Gas, LP Vapor, LP Liquid prime generator set powered by a Cummins/Onan Performer P224 engine. It is available at 120/240 V, Single Phase-phase and 60 Hz. It holds about 3.5 L (0.9 gal) of oil. Starting uses 1 group-26 battery rated 530 CCA at 12 V. The set measures 1143×864×986 mm (45.0×34.0×38.8 in), weighs about 272 kg (600 lb) and produces 70 dBA at 7 m.

0.98 L
Displacement
3.5 L
Oil capacity
3
Document types

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

Specifications

FuelNatural Gas, LP Vapor, LP Liquid
Frequency60.0 Hz
Prime power10 kW
ControllerRST Transfer Switch
Oil capacity3.5 L
Voltage options120/240 V
PhaseSingle Phase
Power factor1.0
Circuit breaker50 A
Battery groupBCI Group 26
Battery cranking530 CCA
Battery voltage12 V
Battery quantity1
Dimensions (L×W×H)1143×864×986 mm
Dry weight272 kg
Sound level70.0 dBA @ 7 m

Engine

Cummins/Onan Performer P224
Oil capacity3.5 L
Displacement0.98 L
AspirationHigh Motor Starting Reserve
Rated speed3600 rpm

Maintenance & consumables

for the Cummins/Onan Performer P224
ItemSpecCapacityPart #Interval
Air filterReplace Engine Air Filter500 hr find
Fuel filter find
Oil filterChange the engine oil and oil filter. Also, change the air filter if it is dirty.100 hr find
Belt find
Coolant filter find
OilCheck the engine oil level as explained under Checking Engine Oil Level in this section.3.5100 hr

Common questions

What engine does the Cummins/Onan RS 12000 use?

The Cummins/Onan RS 12000 is powered by the Cummins/Onan Performer P224 engine.

What fuel does the Cummins/Onan RS 12000 use?

The Cummins/Onan RS 12000 runs on Natural Gas, LP Vapor, LP Liquid.

What is the oil capacity of the Cummins/Onan RS 12000?

The Cummins/Onan Performer P224 engine in the Cummins/Onan RS 12000 has an oil capacity of 3.5 liters.

Troubleshooting

1

Symptoms & remedies

SymptomRemedy
Exhaust system must be installed in accordance with the genset Installation Manual.The exhaust system must be installed in accordance with the genset Installation Manual.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Fuel consumption

RatingLoadL/hgal/h
Full-load9.1
Half-load4.4
No-load3.6
Prime25%0.83
Prime50%1.67
Prime75%2.49
Prime100%3.33

Available documents

Reference — Schedule Technical2012 (Cummins/Onan)Owner's manual — RS12000 Setup Guide (Cummins/Onan)Service manual — 965-0601C Onan GHAB (spec A) Genset Installation manual (03-2003) (Cummins/Onan)