Cummins QSK38-G11 vs SDEC 16XTAA38-G34
The Cummins QSK38-G11 and SDEC 16XTAA38-G34 are both diesel generator engines in a similar power class. Both are rated at roughly 1,266 kVA. Displacement is 37.8 L versus 38 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK38-G11 | SDEC 16XTAA38-G34 |
|---|---|---|
| Headline rating | 1,271 kVA | 1,260 kVA |
| Standby (50 Hz) | 1,017 kWe | 1,008 kWe |
| Prime (50 Hz) | 920 kWe | 916 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 37.8 L | 38 L |
| Configuration | V12 | V16 |
| Cylinders | 12 | 16 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between Cummins QSK38-G11 and SDEC 16XTAA38-G34
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 QSK38-G11 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.