Cummins VTA28G7 vs Perkins 2806A-E18TTAG7
The Cummins VTA28G7 and Perkins 2806A-E18TTAG7 are both diesel generator engines in a similar power class. Both are rated at roughly 941 kVA. Displacement is 28 L versus 18 L. The table below compares their full specifications side by side.
| Specification | Cummins VTA28G7 | Perkins 2806A-E18TTAG7 |
|---|---|---|
| Headline rating | 944 kVA | 938 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 755 kWe | 750 kWe |
| Prime (60 Hz) | — | 680 kWe |
| Displacement | 28 L | 18 L |
| Configuration | V12 | L6 |
| Cylinders | 12 | 6 |
| Rated speed | 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | India | United Kingdom |
Choosing between Cummins VTA28G7 and Perkins 2806A-E18TTAG7
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 VTA28G7 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.