1. Frequency: 50 Hz or 60 Hz
A generator is built for one output frequency, and it has to match the equipment it will power. Every unit in our catalog lists its frequency. Of our 84 international units, 40 are 50 Hz and 44 are 60 Hz.
If you don't know the frequency at your site, choose "Not sure" in the quote form and our engineers will confirm it with you.
2. kW and kVA
Generators are rated in kVA (apparent power) and kW (real power). Most three-phase ratings in our catalog are published at a 0.8 power factor (kW = kVA × 0.8, so 125 kVA gives 100 kW), and our calculators use the same assumption. A few units are published with other ratios, so always use the unit's own kW and kVA figures. Every product page shows both side by side, and the catalog filters work in either unit.
3. Standby or prime
Standby ratings apply to backup power during outages. Prime ratings apply when the generator is the main source of power, and are lower than the standby rating for the same unit. Where both are published, our pages show both. If the generator will run every day, size it on the prime rating.
4. Voltage
We only show voltages that are published for each unit. We never assume a voltage. These are the voltage listings across our generator catalog:
- 277/480145 units
- 120/208138 units
- 120/240107 units
- 110/22045 units
- 240/38034 units
- 220/3802 units
Need a voltage that isn't listed? Tell us in the quote form; many units are configured to order.
5. Emissions and market eligibility
Generators certified to US EPA standards are separate from international (non-EPA) units. Each product page states which market it is for, using the wording published for that unit:
“Emissions: Tier 1 Rated, for International Use Only”
“Triton Natural Gas / Liquid Propane EPA Generators are compliant for use in the United States or Canada for emergency stationary applications.”
Some countries set their own emissions rules. Tell us your destination and application and we will confirm which configuration fits before you order.