The Caterpillar D125 generator is listed with standby output of 125 kW, Diesel fuel, 60 Hz operation, 4 available voltage configurations, Three phase, and sound level of 97 dBA @ 10 ft (3 m).
Generator • Diesel • 60 Hz • Three phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
5.7 gal/hr
7.8 gal/hr
9.9 gal/hr
42.1 kW
38 kW
125 kW
114 kW
How the Caterpillar D125 compares
Low, Typical and High are fixed generator-industry reference bands set by standby-output class. They do not change based on the models contained in this CSV.
Falls within the typical industry reference range for generators in this standby-output class.
Falls within the typical industry reference range for generators in this standby-output class.
Falls toward the high end of the fixed industry reference range for generators in this standby-output class.
Falls within the typical industry reference range for generators in this standby-output class.
Generator information
| Manufacturer | Caterpillar |
|---|---|
| Model | D125 |
| Generator type | Generator |
| Fuel | Diesel |
| Frequency | 60 Hz |
Electrical output
| Standby power | 125 kW |
|---|---|
| Prime power | 114 kW |
| Standby kVA | 156.0 |
| Voltage options | 208 V, 240 V, 480 V, 600 V |
| Phase | Three phase |
| Power factor | 0.8 |
Engine, cooling and controls
| Engine model | Caterpillar C6.6 |
|---|---|
| Engine displacement | 403 cu in (6.6 L) |
| Aspiration / cooling | Turbocharged, Air-to-Air Aftercooled |
| Rated engine speed | 1800 rpm |
| Engine oil capacity | 4.36 gal (16.5 L) |
| Engine coolant capacity | 5.55 gal (21 L) |
| Oil capacity | 4.36 gal (16.5 L) |
| Coolant capacity | 5.55 gal (21 L) |
| Maximum ambient | 122 °F (50 °C) |
| Controller | EMCP 4.2 |
| Alternator | LC3014F (4-pole, Class H insulation) |
| Emissions | EPA Tier 3 Nonroad Standards |
Physical specifications
| Dry weight | 2, 970 lb (1, 347 kg) |
|---|---|
| Dimensions (L × W × H) | 119.6 × 43.7 × 58 in (3037 × 1110 × 1473 mm) |
| Sound level | 97 dBA @ 10 ft (3 m) |
Fuel consumption
| Standby | 5.7 gal/h (21.4 L/h) @ 50%; 7.8 gal/h (29.6 L/h) @ 75%; 9.9 gal/h (37.3 L/h) @ 100% |
|---|---|
| Prime | 5.3 gal/h (19.9 L/h) @ 50%; 7.2 gal/h (27.4 L/h) @ 75%; 9.1 gal/h (34.6 L/h) @ 100% |
Maintenance and service parts
| Fuel filter | Part number: — | 1466695; Specification: Cat high efficiency fuel filters with Stay-Clean Valve, primary and secondary filters in engine compartment |
|---|
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Caterpillar USA website.