Cummins QSL9-G5 vs Lister Petter LP689EG4
Compare Cummins QSL9-G5 and Lister Petter LP689EG4 by recorded output, operating duty, frequency and engine specifications. Their listed displacements are 8.8 L and 8.9 L, respectively. Start with the same duty and frequency, then check each model’s source and package conditions. These records alone do not establish interchangeability.
| Specification | Cummins QSL9-G5 | Lister Petter LP689EG4 |
|---|---|---|
| Standby electrical (50 Hz) | 240 kWe | 240 kWe |
| Prime electrical (50 Hz) | 220 kWe | 220 kWe |
| Standby electrical (60 Hz) | 275 kWe | 264 kWe |
| Prime electrical (60 Hz) | 250 kWe | 240 kWe |
| Other recorded mechanical power (duty unspecified) | Not listed | 274 kW |
| Displacement | 8.8 L | 8.9 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Recorded engine speed | 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | U.S. EPA Tier 3 | Euro Stage III |
| Dry weight | Not listed | Not listed |
| Origin | United States | United Kingdom |
Compare matching ratings
Read across a row to compare the same operating duty and frequency. kWe is electrical output; mechanical kW is power at the engine shaft. kVA is apparent electrical power and is shown only when kWe is missing, without converting it. “Not listed” means the record lacks that rating, not zero output. Continuous and prime duties are kept separate. Check source documents, units and site conditions before comparing values.
An emissions classification in the catalog is not proof of certification for your engine or installation. Confirm the exact model, applicable documents and generator configuration.
Cummins QSL9-G5: Review the model record and available supporting documents
Lister Petter LP689EG4: Review the model record and available supporting documents
Choosing between Cummins QSL9-G5 and Lister Petter LP689EG4
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.