Cummins QSB5.9-G30 vs Hyundai DP054CAP
The Cummins QSB5.9-G30 and Hyundai DP054CAP are both diesel generator engines in a similar power class. Both are rated at roughly 140 kVA. Displacement is 5.9 L versus 5 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB5.9-G30 | Hyundai DP054CAP |
|---|---|---|
| Headline rating | 140 kVA | 139 kVA |
| Standby (50 Hz) | 112 kWe | 111 kWe |
| Prime (50 Hz) | 90 kWe | 101 kWe |
| Standby (60 Hz) | — | 131 kWe |
| Prime (60 Hz) | — | 118 kWe |
| Displacement | 5.9 L | 5 L |
| Configuration | L6 | L4 |
| Cylinders | 6 | 4 |
| Rated speed | 1,500 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | U.S. EPA Final Tier 4 |
| Dry weight | — | — |
| Origin | China | South Korea |
Choosing between Cummins QSB5.9-G30 and Hyundai DP054CAP
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Cummins QSB5.9-G30 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.