The Cummins Onan DFP 250 generator is listed with standby output of 200 kW, Diesel fuel, 60 Hz operation, and Three phase.
Generator • Diesel • 60 Hz • Three phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
33.7 kW
45.1 kW
How the Cummins Onan DFP 250 compares
This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.
About 14% below the similar-output Cummins Onan average. Around the 45th percentile for this field.
Very close to the similar-output Cummins Onan average. Around the 54th percentile for this field.
About 7% above the similar-output Cummins Onan average. Around the 57th percentile for this field.
Generator information
| Manufacturer | Cummins Onan |
|---|---|
| Model | DFP 250 |
| Generator type | Generator |
| Fuel | Diesel |
| Frequency | 60 Hz |
Electrical output
| Standby power | 200 kW |
|---|---|
| Standby kVA | 250.0 |
| Phase | Three phase |
| Power factor | 0.8 |
Engine, cooling and controls
| Engine model | Cummins/Onan NT-855-G2 |
|---|---|
| Aspiration / cooling | turbocharged |
| Rated engine speed | 1800 rpm |
| Engine oil capacity | 8.19 gal (31 L) |
| Engine coolant capacity | 14 gal (53 L) |
| Oil capacity | 8.19 gal (31 L) |
| Coolant capacity | 14 gal (53 L) |
| Alternator | Cummins/Onan 3 Phase 60 Hz YB |
Physical specifications
| Dry weight | 5, 935 lb (2, 692 kg) |
|---|
Battery
| Battery group | 8D |
|---|---|
| Battery voltage | 12 V |
| Battery quantity | 2 |
Maintenance and service parts
| Engine oil | Interval: 50 hr; Specification: SAE 10W-30, 15W-40, or 20W-40 depending on temperature; Capacity: 31.0 liters |
|---|---|
| Oil filter | Interval: 250 hr; Specification: As specified for Cummins engines |
| Fuel filter | Interval: 1000 hr; Specification: Replace when dirty |
| Air filter | Interval: 250 hr; Specification: Check and replace if necessary at specified intervals |
| Coolant | Interval: 50 hr; Specification: Ethylene glycol based coolant; Capacity: 53 |
| Coolant filter | Specification: Clean or replace as required. See Figure 7 for filter location and replacement procedure. |
| Belt | Interval: 50 hr; Specification: Check tension and condition; replace if damaged |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.