Cummins 6ZTAA13-G4 vs Lister Petter LP625SG1
The Cummins 6ZTAA13-G4 and Lister Petter LP625SG1 are both diesel generator engines in a similar power class. Both are rated at roughly 547 kVA. Displacement is 13 L versus 25.18 L. The table below compares their full specifications side by side.
| Specification | Cummins 6ZTAA13-G4 | Lister Petter LP625SG1 |
|---|---|---|
| Headline rating | 548 kVA | 545 kVA |
| Standby (50 Hz) | 438 kWe | 436 kWe |
| Prime (50 Hz) | 350 kWe | 400 kWe |
| Standby (60 Hz) | 438 kWe | 504 kWe |
| Prime (60 Hz) | 350 kWe | 460 kWe |
| Displacement | 13 L | 25.18 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 | Unregulated | Euro Stage III |
| Dry weight | — | — |
| Origin | China | United Kingdom |
Choosing between Cummins 6ZTAA13-G4 and Lister Petter LP625SG1
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 Cummins 6ZTAA13-G4 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.