Mitsubishi S6R-Y2PTAW vs SDEC SC25K990D2
The Mitsubishi S6R-Y2PTAW and SDEC SC25K990D2 are both diesel generator engines in a similar power class. Both are rated at roughly 815 kVA. Displacement is 24.51 L versus 25 L. The table below compares their full specifications side by side.
| Specification | Mitsubishi S6R-Y2PTAW | SDEC SC25K990D2 |
|---|---|---|
| Headline rating | 813 kVA | 816 kVA |
| Standby (50 Hz) | — | 653 kWe |
| Prime (50 Hz) | — | 594 kWe |
| Standby (60 Hz) | 650.4 kWe | — |
| Prime (60 Hz) | 592 kWe | — |
| Displacement | 24.51 L | 25 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | China National Stage II / Unregulated |
| Dry weight | 2705 kg | — |
| Origin | Japan | China |
Choosing between Mitsubishi S6R-Y2PTAW and SDEC SC25K990D2
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.