Caterpillar C18 vs Googol PTAA10V-EG690
The Caterpillar C18 and Googol PTAA10V-EG690 are both diesel generator engines in a similar power class. Both are rated at roughly 778 kVA. Displacement is 18.13 L versus 20.3 L. The table below compares their full specifications side by side.
| Specification | Caterpillar C18 | Googol PTAA10V-EG690 |
|---|---|---|
| Headline rating | 780 kVA | 775 kVA |
| Standby (50 Hz) | 624 kWe | 620 kWe |
| Prime (50 Hz) | 564 kWe | 560 kWe |
| Standby (60 Hz) | 750 kWe | — |
| Prime (60 Hz) | 680 kWe | — |
| Displacement | 18.13 L | 20.3 L |
| Configuration | L6 | V10 |
| Cylinders | 6 | 10 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Air-Air |
| Emissions | U.S. EPA Tier 2 | China National Stage III / Unregulated |
| Dry weight | — | 1480 kg |
| Origin | United States | China |
Choosing between Caterpillar C18 and Googol PTAA10V-EG690
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 Caterpillar C18 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.