Mitsubishi S12A2-PTA vs VMAN D22.2
The Mitsubishi S12A2-PTA and VMAN D22.2 are both diesel generator engines in a similar power class. Both are rated at roughly 888 kVA. Displacement is 33.93 L versus 21.927 L. The table below compares their full specifications side by side.
| Specification | Mitsubishi S12A2-PTA | VMAN D22.2 |
|---|---|---|
| Headline rating | 886 kVA | 889 kVA |
| Standby (50 Hz) | 708.8 kWe | — |
| Prime (50 Hz) | 644.8 kWe | — |
| Standby (60 Hz) | 807.2 kWe | 711 kWe |
| Prime (60 Hz) | 723.2 kWe | 646 kWe |
| Displacement | 33.93 L | 21.927 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | 3400 kg | — |
| Origin | Japan | China |
Choosing between Mitsubishi S12A2-PTA and VMAN D22.2
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 VMAN D22.2 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.