The Kohler 250RZD generator is listed with standby output of 250 kW, Natural Gas fuel, 60 Hz operation, 4 available voltage configurations, Three phase, and rated current of 867 / 752 / 677 / 475 / 428 / 383 / 307 / 277 / 885 / 799 / 767 / 692 A.
Generator • Natural Gas • 60 Hz • Three phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
39.1 kW
40 kW
250 kW
225 kW
How the Kohler 250RZD compares
This compares the supplied numeric specification with Kohler generators in the same broad standby-power class where enough comparable data exists.
About 11% above the similar-output Kohler average. Around the 66th percentile for this field.
About 9% above the similar-output Kohler average. Around the 58th percentile for this field.
About 19% above the similar-output Kohler average. Around the 75th percentile for this field.
Generator information
| Manufacturer | Kohler |
|---|---|
| Model | 250RZD |
| Generator type | Generator |
| Fuel | Natural Gas |
| Frequency | 60 Hz |
Electrical output
| Standby power | 250 kW |
|---|---|
| Prime power | 225 kW |
| Standby kVA | 313.0 |
| Voltage options | 120/208 V, 120/240 V, 277/480 V, 347/600 V |
| Phase | Three phase |
| Rated current | 867 / 752 / 677 / 475 / 428 / 383 / 307 / 277 / 885 / 799 / 767 / 692 A |
| Power factor | 0.8 |
Engine, cooling and controls
| Engine model | Detroit Diesel S60G |
|---|---|
| Engine displacement | 775 cu in (12.7 L) |
| Aspiration / cooling | Turbocharged |
| Rated engine speed | 1800 rpm |
| Engine oil capacity | 9.51 gal (36 L) |
| Engine coolant capacity | 6 gal (22.7 L) |
| Oil capacity | 9.51 gal (36 L) |
| Coolant capacity | 12 gal (45.4 L) |
| Maximum ambient | 122 °F (50 °C) |
| Controller | Decision-Maker 550 |
Physical specifications
| Dry weight | 6, 396 lb (2, 901 kg) |
|---|---|
| Dimensions (L × W × H) | 134.5 × 50 × 79.2 in (3416 × 1270 × 2012 mm) |
Battery
| Battery cranking | 950 CCA |
|---|---|
| Battery voltage | 12 V |
| Battery quantity | 2 |
Fuel consumption
| Standby | 82.0 L/h @ 100% |
|---|---|
| Prime | 75.0 L/h @ 100% |
Maintenance and service parts
| Engine oil | Specification: 15W40 Mobil Delvac GEO or Exxon Estor |
|---|---|
| Oil filter | Specification: Cartridge; Capacity: ×2 |
| Fuel filter | Specification: Natural Gas Filter |
| Air filter | Specification: Dry |
| Coolant | Specification: Water-Cooled |
| Belt | Specification: Flexible Disc Coupling, Fan Diameter: 991 mm (39 in.) |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Kohler North America generator website.