Cummins QST30G2 vs SDEC 6KTAA25-G32
Compare Cummins QST30G2 and SDEC 6KTAA25-G32 by catalog output, operating duty, frequency and engine specifications. Their listed displacements are 30 L and 25 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 QST30G2 | SDEC 6KTAA25-G32 |
|---|---|---|
| Standby electrical (50 Hz) | 688 kWe | 679 kWe |
| Prime electrical (50 Hz) | 643 kWe | 617 kWe |
| Standby electrical (60 Hz) | 800 kWe | Not listed |
| Prime electrical (60 Hz) | 740 kWe | Not listed |
| Other recorded mechanical power (duty unspecified) | 895 kW | Not listed |
| Displacement | 30 L | 25 L |
| Configuration | V12 | L6 |
| Cylinders | 12 | 6 |
| Recorded engine speed | Not listed | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | Unregulated | China National Stage III / Unregulated |
| Dry weight | Not listed | Not listed |
| Origin | United States | China |
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 QST30G2: Review the model record and available supporting documents
SDEC 6KTAA25-G32: Review the model record and available supporting documents
Choosing between Cummins QST30G2 and SDEC 6KTAA25-G32
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.