Dry type Transformers versus Oil Filled
We are looking into the differences between dry type and oil filled transformer and understand the benefits of both types (somewhat). In this particular situation we are stepping up 480Y/277 to 12470 for a photovoltaic system. The 800kVA to 1500kVA transformers will be outside in the weather on a concrete pad. At what point should I consider oil filled or it there always a dry type that will work. I was under the impression we will need to use an oil filled outside in 90 deg ambient temps due to the dry types inability to disapate heat. Does anyone have any thoughts? Is it always a requirement or good practice to use oil filled outside?
Chris Hill, EE,ME,GA-CR
Power Factor Correction