Cummins KT38-G vs SDEC 6JTAA17-G31
The Cummins KT38-G and SDEC 6JTAA17-G31 are both diesel generator engines in a similar power class. Both are rated at roughly 700 kVA. Displacement is 38 L versus 17 L. The table below compares their full specifications side by side.
| Specification | Cummins KT38-G | SDEC 6JTAA17-G31 |
|---|---|---|
| Headline rating | 700 kVA | 700 kVA |
| Standby (50 Hz) | 560 kWe | 560 kWe |
| Prime (50 Hz) | 500 kWe | 509 kWe |
| Standby (60 Hz) | 680 kWe | — |
| Prime (60 Hz) | 620 kWe | — |
| Displacement | 38 L | 17 L |
| Configuration | V12 | L6 |
| Cylinders | 12 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between Cummins KT38-G and SDEC 6JTAA17-G31
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.