SDEC 6KTAA25-G33 vs VMAN D22B1
The SDEC 6KTAA25-G33 and VMAN D22B1 are both diesel generator engines in a similar power class. Both are rated at roughly 769 kVA. Displacement is 25 L versus 21.927 L. The table below compares their full specifications side by side.
| Specification | SDEC 6KTAA25-G33 | VMAN D22B1 |
|---|---|---|
| Headline rating | 770 kVA | 768 kVA |
| Standby (50 Hz) | 616 kWe | — |
| Prime (50 Hz) | 560 kWe | — |
| Standby (60 Hz) | — | 614 kWe |
| Prime (60 Hz) | — | 558 kWe |
| Displacement | 25 L | 21.927 L |
| Configuration | L6 | V12 |
| Cylinders | 6 | 12 |
| Rated speed | 1,500 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between SDEC 6KTAA25-G33 and VMAN D22B1
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 6KTAA25-G33 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.