Cummins QSK50G14 vs SDEC 12KTA58-G35
The Cummins QSK50G14 and SDEC 12KTA58-G35 are both diesel generator engines in a similar power class. Both are rated at roughly 1,758 kVA. Displacement is 50 L versus 58 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK50G14 | SDEC 12KTA58-G35 |
|---|---|---|
| Headline rating | 1,760 kVA | 1,755 kVA |
| Standby (50 Hz) | 1,408 kWe | 1,404 kWe |
| Prime (50 Hz) | 1,300 kWe | 1,278 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 50 L | 58 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China III / U.S. EPA Tier 2 | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | United Kingdom | China |
Choosing between Cummins QSK50G14 and SDEC 12KTA58-G35
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 QSK50G14 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.