supply of supply, erection, testing & commissioning of 220/132 kv 50/75/150 mva, (onan,onaf,ofaf) oil merged type 3 phase, 50 hz auto transformer. , supply, erection, testing & commissioning of 220/132 kv 50/75/150 mva, (onan,onaf,ofaf) oil mer ged type 3 phase, 50 hz auto transformer with onload tap changeover as per rdso spec no ti/spc/psi/autotr/009 1 (12/09) dated 04.08.2021 with latest amendment. specification as per attached in the documents. [ warranty pe riod: 30 months after the date of delivery ] ] , capitalisation of transformer losses as per annexure 3 [ warranty period: 30 months afte r the date of delivery ] ]