Cummins 6BTAA5.9-G12 vs SDEC SC7H220D2
The Cummins 6BTAA5.9-G12 and SDEC SC7H220D2 are both diesel generator engines in a similar power class. Both are rated at roughly 187 kVA. Displacement is 5.9 L versus 7 L. The table below compares their full specifications side by side.
| Specification | Cummins 6BTAA5.9-G12 | SDEC SC7H220D2 |
|---|---|---|
| Headline rating | 188 kVA | 186 kVA |
| Standby (50 Hz) | 150 kWe | 149 kWe |
| Prime (50 Hz) | 120 kWe | 135 kWe |
| Standby (60 Hz) | 160 kWe | — |
| Prime (60 Hz) | 128 kWe | — |
| Displacement | 5.9 L | 7 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | China National Stage II / Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between Cummins 6BTAA5.9-G12 and SDEC SC7H220D2
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 6BTAA5.9-G12 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.