SDEC SC27G830D2 vs VMAN D22A
The SDEC SC27G830D2 and VMAN D22A are both diesel generator engines in a similar power class. Both are rated at roughly 684 kVA. Displacement is 27 L versus 21.927 L. The table below compares their full specifications side by side.
| Specification | SDEC SC27G830D2 | VMAN D22A |
|---|---|---|
| Headline rating | 686 kVA | 681 kVA |
| Standby (50 Hz) | 549 kWe | 545 kWe |
| Prime (50 Hz) | 505 kWe | 500 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 27 L | 21.927 L |
| Configuration | L6 | V12 |
| Cylinders | 6 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage II / Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between SDEC SC27G830D2 and VMAN D22A
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 SC27G830D2 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.