... TransformerTECHNICAL PARAMETERS:1) Rated Power: 30~2500kVA2)Rated HV: 6KV,6.3KV, 10KV, 10.5KV,11KV,15KV,20KV,22KV,33KV 35KV ... No. :single or three;5)Rated frequency: 50Hzor 60 Hz;6)Vector group: Dyn11, Yyn0 or others;7)Short circuit impedance ... : 4%, 4.5% ,6% or others in accordance to client needs;8)Tapping voltage ...