Mitsubishi S6R-Y2PTAW vs PSI 20L-D
The Mitsubishi S6R-Y2PTAW and PSI 20L-D are both diesel generator engines in a similar power class. Both are rated at roughly 813 kVA. Displacement is 24.51 L versus 19.62 L. The table below compares their full specifications side by side.
| Specification | Mitsubishi S6R-Y2PTAW | PSI 20L-D |
|---|---|---|
| Headline rating | 813 kVA | 813 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 650.4 kWe | 650 kWe |
| Prime (60 Hz) | 592 kWe | — |
| Displacement | 24.51 L | 19.62 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | U.S. EPA Tier 3 |
| Dry weight | 2705 kg | 2110 kg |
| Origin | Japan | United States |
Choosing between Mitsubishi S6R-Y2PTAW and PSI 20L-D
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.