... 4)Lowest cost, lowest loss S13-M.RL 80~2500KVA 20/0.433kv 3 phase new energy-saving three imensional triangular ... (KW) Uk ------------------- transformer short-circuit impedance (%) Pn ------------------- transformer rated capacity (kVA) 8760,3400 -------- transformer no-load running in one year, load ... ,000 yuan / T, copper: 67, 000 yuan / T. G5-200KVA 20/0.433KV S13-M.RL 3 phase new energy-saving ...