The Cummins Onan DQCB generator is listed with standby output of 750 kW, Diesel fuel, 60 Hz operation, 8 available voltage configurations, and A (U) / B (V) / C (W).
Generator • Diesel • 60 Hz • A (U) / B (V) / C (W)
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
16 gal/hr
28 gal/hr
40 gal/hr
51 gal/hr
56 kW
58 kW
750 kW
680 kW
How the Cummins Onan DQCB compares
This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.
About 13% above the similar-output Cummins Onan average. Around the 67th percentile for this field.
About 14% below the similar-output Cummins Onan average. Around the 39th percentile for this field.
Very close to the similar-output Cummins Onan average. Around the 53rd percentile for this field.
Generator information
| Manufacturer | Cummins Onan |
|---|---|
| Model | DQCB |
| Generator type | Generator |
| Fuel | Diesel |
| Frequency | 60 Hz |
Electrical output
| Standby power | 750 kW |
|---|---|
| Prime power | 680 kW |
| Standby kVA | 938.0 |
| Voltage options | 380 V, 480 V, 220/380 V, 600 V, 190 V, 208/416 V, 400 V, 416 V |
| Phase | A (U) / B (V) / C (W) |
Engine, cooling and controls
| Engine model | Cummins/Onan QSK23-G7 NR2 |
|---|---|
| Engine displacement | 1, 413 cu in (23.15 L) |
| Aspiration / cooling | Turbocharged and low temperature after-cooled |
| Rated engine speed | 1800 rpm |
| Engine oil capacity | 26.9 gal (102 L) |
| Engine coolant capacity | 28.9 gal (109.5 L) |
| Oil capacity | 26.9 gal (102 L) |
| Coolant capacity | 28.9 gal (109.5 L) |
| Maximum ambient | 122 °F (50 °C) |
| Controller | PowerCommand |
| Emissions | EPA NSPS Stationary Emergency Tier 2 |
Physical specifications
| Dry weight | 13, 393 lb (6, 075 kg) |
|---|---|
| Wet weight | 13, 971 lb (6, 337 kg) |
| Dimensions (L × W × H) | 173 × 73 × 81.3 in (4395 × 1855 × 2065 mm) |
Battery
| Battery cranking | 1400 CCA |
|---|
Fuel consumption
| Standby | 16.0 gal/h (60.6 L/h) @ 25%; 28.0 gal/h (106.0 L/h) @ 50%; 40.0 gal/h (151.4 L/h) @ 75%; 51.0 gal/h (193.1 L/h) @ 100% |
|---|---|
| Prime | 15.0 gal/h (56.8 L/h) @ 25%; 25.0 gal/h (94.6 L/h) @ 50%; 36.5 gal/h (138.2 L/h) @ 75%; 48.0 gal/h (181.7 L/h) @ 100% |
Maintenance and service parts
| Engine oil | Interval: 250 hr; Specification: Oil pressure range at rated: 50-65 PSI (345-448 kPa); Capacity: 54.8 |
|---|---|
| Oil filter | Part number: LF9325; Specification: (2) Cummins Filtration LF9325 |
| Fuel filter | Interval: 200 hr; Specification: (1) primary element AF25544; (1) secondary element AF25545, (2) Cummins Filtration FS1006 |
| Air filter | Interval: 1000 hr; Specification: (1) primary element AF25544; (1) secondary element AF25545 |
| Coolant | Interval: 24000 hr; Specification: Antifreeze 50/50 (Ethylene glycol) |
| Coolant filter | Specification: (1) Cummins Filtration WF2076 |
| Belt | Interval: 15000 hr; Specification: Steel, flanged; Stainless steel flex, NPT |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.