transformers-distribution-upto 5mva transformers-distribution-upto 5mva , design, engineering, manufacturing, assembly, painting, inspection and testing, packing, forwarding, shipping, transportation & supply at site, supply of mandatory & commissioning spares, tools & tackles, supervision of installation, testing and commissioning, mechanical and performance guarantee of the following as per the requirements specified , 1.6 mva, 6.6 / 0.433 kv, z = 6.25% without negative tolerances, dyn11, onan, star-1 / level-2 energy efficiency, distribution transformer with off circuit tap changer ( +5 to -10 % range in steps of 2.5 % for variation on 6.6kv side ) , 1 no. cast resin type ct for restricted earth fault protection and 1 no. cast resin type ct for stand-by earth fault protection mounted in separate terminal chamber in neutral side complete with all fittings and accessories.