SDEC SC25K990D2 vs Weichai 6M33D725E310
The SDEC SC25K990D2 and Weichai 6M33D725E310 are both diesel generator engines in a similar power class. Both are rated at roughly 816 kVA. Displacement is 25 L versus 19.8 L. The table below compares their full specifications side by side.
| Specification | SDEC SC25K990D2 | Weichai 6M33D725E310 |
|---|---|---|
| Headline rating | 816 kVA | 815 kVA |
| Standby (50 Hz) | 653 kWe | 652 kWe |
| Prime (50 Hz) | 594 kWe | 608 kWe |
| Standby (60 Hz) | — | 666 kWe |
| Prime (60 Hz) | — | 603 kWe |
| Displacement | 25 L | 19.8 L |
| Configuration | L6 | V6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage II / Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between SDEC SC25K990D2 and Weichai 6M33D725E310
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 SC25K990D2 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.