Cummins QSM11-G2 vs Lister Petter LP612EG1
The Cummins QSM11-G2 and Lister Petter LP612EG1 are both diesel generator engines in a similar power class. Both are rated at roughly 339 kVA. Displacement is 10.8 L versus 11.8 L. The table below compares their full specifications side by side.
| Specification | Cummins QSM11-G2 | Lister Petter LP612EG1 |
|---|---|---|
| Headline rating | 338 kVA | 340 kVA |
| Standby (50 Hz) | 270 kWe | 272 kWe |
| Prime (50 Hz) | 240 kWe | 250 kWe |
| Standby (60 Hz) | 300 kWe | 308 kWe |
| Prime (60 Hz) | 270 kWe | 280 kWe |
| Displacement | 10.8 L | 11.8 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | Euro Stage III |
| Dry weight | — | — |
| Origin | China | United Kingdom |
Choosing between Cummins QSM11-G2 and Lister Petter LP612EG1
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 Lister Petter LP612EG1 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.