procurement of 59 nos., isi marked, 11 / 0.433 kv, three phase, 500 kva, 50 cycles, outdoor type, oil immersed, crgo / amorphous core dts procurement of 59 nos., isi marked, 11 / 0.433 kv, three phase, 500 kva, 50 cycles, outdoor type, oil immersed, crgo / amorphous core dts , procurement of 59 nos. eel-2 ( as per amendment no. 4 to is 1180 ) / star-2 ( new ) , isi marked, 11 / 0.433 kv, 500 kva, three phase, 50 cycles, out door type, oil immersed, naturally cooled, core or shell type, stack / wound core type construction copper wound, crgo / amorphous core distribution transformers complete with fittings as per pspcl specification & conforming to is 1180 part-1 ( 2014 ) & 2026 ( with latest amendments )