Recommended Transformer for Specialized Vehicle Power Conversion

Hello, everyone! I have a specialized equipment vehicle with a generator of 120/208 3 phase, 80A. Regretfully the land electrical network supply is 220/380. Is there a transformer or auto-transformer to step-down the network source and adapt it to the power used by the equipment of the vehicle? This is when the vehicle is stationary and the internal generator will not work and instead it will be using the network power.

Timothy wrote:
Hi, Timothy, In your case, we recommended 40KVA, three-phase 380V input and output three-phase 208V isolation transformer ATO-T-SG40KVA, see specs on: https://www.ato.com/40-kva-isolation-transformer

ATO wrote:
Would a 30KVA transformer be sufficient for the original question, or does the 40KVA model have a specific reason for being recommended?

Timothy wrote:
40KVA transformer is recommended because the vehicle’s generator is rated at 80A for 208V, which results in a power requirement of approximately 28.8 KVA at full load. To account for inrush currents and ensure a margin for safety, a 40KVA unit provides better reliability and avoids potential overloading.
If your equipment operates at a lower duty cycle and never reaches full load, a 30KVA transformer could work, but it would be at its limit. If unsure, it's always safer to oversize the transformer rather than undersize it.