Cummins L9G17 vs SDEC 6DTAA8.9-G33
The Cummins L9G17 and SDEC 6DTAA8.9-G33 are both diesel generator engines in a similar power class. Both are rated at roughly 285 kVA. Displacement is 8.8 L versus 8.9 L. The table below compares their full specifications side by side.
| Specification | Cummins L9G17 | SDEC 6DTAA8.9-G33 |
|---|---|---|
| Headline rating | 284 kVA | 285 kVA |
| Standby (50 Hz) | 227 kWe | 228 kWe |
| Prime (50 Hz) | 207 kWe | 207 kWe |
| Standby (60 Hz) | 232 kWe | — |
| Prime (60 Hz) | 212 kWe | — |
| Displacement | 8.8 L | 8.9 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Final Tier 4 / EU Stage V | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Cummins L9G17 and SDEC 6DTAA8.9-G33
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 SDEC 6DTAA8.9-G33 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.