Lister Petter LP625SG4 vs SDEC 12GTAA27-G31
The Lister Petter LP625SG4 and SDEC 12GTAA27-G31 are both diesel generator engines in a similar power class. Both are rated at roughly 768 kVA. Displacement is 25.18 L versus 27 L. The table below compares their full specifications side by side.
| Specification | Lister Petter LP625SG4 | SDEC 12GTAA27-G31 |
|---|---|---|
| Headline rating | 765 kVA | 770 kVA |
| Standby (50 Hz) | 612 kWe | 616 kWe |
| Prime (50 Hz) | 560 kWe | 560 kWe |
| Standby (60 Hz) | 612 kWe | — |
| Prime (60 Hz) | 560 kWe | — |
| Displacement | 25.18 L | 27 L |
| Configuration | L6 | V12 |
| Cylinders | 6 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Euro Stage III | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | United Kingdom | China |
Choosing between Lister Petter LP625SG4 and SDEC 12GTAA27-G31
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 SDEC 12GTAA27-G31 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.