ONE (1) MOBILE 30000 KVA, Pri 69000 D X 138000 D, Sec 13200Y/7620 X 26400Y/15240 TRANSFORMER, 3 PHASE, 60 HERTZ, CLASS FOA, 75 DEG° C. RISE, 17.2% IMPEDANCE, COPPER WINDINGS, 3 X 120 KV ARRESTERS, 3 X 60KV ARRESTERS.