PSI 20L-D vs Weichai 6M33D725E310
The PSI 20L-D and Weichai 6M33D725E310 are both diesel generator engines in a similar power class. Both are rated at roughly 814 kVA. Displacement is 19.62 L versus 19.8 L. The table below compares their full specifications side by side.
| Specification | PSI 20L-D | Weichai 6M33D725E310 |
|---|---|---|
| Headline rating | 813 kVA | 815 kVA |
| Standby (50 Hz) | — | 652 kWe |
| Prime (50 Hz) | — | 608 kWe |
| Standby (60 Hz) | 650 kWe | 666 kWe |
| Prime (60 Hz) | — | 603 kWe |
| Displacement | 19.62 L | 19.8 L |
| Configuration | L6 | V6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 3 | China National Stage III / Unregulated |
| Dry weight | 2110 kg | — |
| Origin | United States | China |
Choosing between PSI 20L-D 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 Weichai 6M33D725E310 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.