Cummins KTAA19-G7 vs Yuchai YC6TD840-D30
The Cummins KTAA19-G7 and Yuchai YC6TD840-D30 are both diesel generator engines in a similar power class. Both are rated at roughly 688 kVA. Displacement is 19 L versus 19.598 L. The table below compares their full specifications side by side.
| Specification | Cummins KTAA19-G7 | Yuchai YC6TD840-D30 |
|---|---|---|
| Headline rating | 688 kVA | 688 kVA |
| Standby (50 Hz) | 550 kWe | 550 kWe |
| Prime (50 Hz) | — | 500 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 19 L | 19.598 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between Cummins KTAA19-G7 and Yuchai YC6TD840-D30
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.