Transformer sizing

[electro7]

Hi,

I am designing a system using three 480volt string inverters. 2 have an operating current of 24 amps the other is 40 amps. There is an existing 75kva 480V/208V transformer. The sum of the inverter operating current is 88 amps. Im good with the 75kva, correct?

Thanks!

 

[Engineer#4827502]

I get 73.1 kW. Check with the string inverter manufacturer. Some string inverters say they require a slightly larger (105% of sum of inverter rating) transformer when paralleling.