procurement of 06 nos. of 80 mva, 132 kv 34.5kv power transformer procurement of 06 nos. of 80 mva, 132 kv 34.5 kv power transformer , main items: , 80 mva, 132kv / 34.5kv , 50hz, ynd1, star (earthed neutral) / delta, core type, 3 phase, outdoor type, oil immersed , onan/ onaf/ ofaf cooled switchyard transformer complete with main tank, tank mounted cooler bank, on load tap changer (hv side) suitable for voltage variation of +/- 10% variation, cc cubicle, digital rtcc panel along with all fittings & accessories as per requirement of technical specification (except transformer oil, n2 fpes) , transformer oil for first filling plus 10% extra quantity , complete set of equipment for fire prevention & extinguishing system by nitrogen (n2) injection method as per technical specification including supply of all control units & accessories, pipe, connectors, required control cables, ac / dc converters etc. all complete along with supply of spare n2 cylinder for above transformer , condition controlled regenerative maintenance free silica gel breather for main conservator complete with all accessories , condition controlled regenerative maintenance free silica gel breather for oltc conservator complete with all accessories , type test charges as per spec.: , temperature rise test , impulse test , mandatory spares (for above transformer): , hv bushing as per spec. with metal parts & gaskets , lv bushing as per spec. with metal parts & gaskets , hv neutral bushing as per spec. with metal part & gaskets , buchholz relay (with alarm & trip contacts) for main tank , oil surge relay (with alarm / trip contacts) for oltc , magnetic oil level gauge (with alarm / trip contact) for main conservator , magnetic oil level gauge (with alarm / trip contact) for oltc conservator. , current transformer of hv wti. , current transformer of lv wti. , current transformer of hv-n , remote oti complete with alarm, trip contact & sensing device,etc. , remote wti complete with alarm, trip contact & sensing device,etc. , pressure relief device , oil flow indicator with flow switch , remote tap position indicator , cooling fan with motor , cooling pump with motor , terminal connector for hv bushing suitable for acsr moose conductor , terminal connector for lv bushing suitable for 2.5-inch aluminium tube (expansion type) , unloading charge per unit at site (1 unit means complete set of transformer with all accessories, spares, tools & tackles etc.) , supervision charges for deputation of engineer / technician to supervise erection & commissioning work. (optional) – [n.b. general terms & conditions for supervision of erection & commissioning job shall be furnished] engineer / technician per day