tender for supply of spares for 66kv switchyard & 12 mva transformer of pathri power house , supply of spares for 66kv switchyard & 12 mva transformer of pathri power house , oip condenser type hv bushings having ratting voltage 72.5 kv (as per sl.no.1 of attached technical specifications) , bucholz relay (as per sl.no.2 of attached technical specifications) , oil temperature indicator (oti) with 2 changeover switches (as per sl.no.3 of attached technical specifications) , winding temperature indicator (wti) with 4 micro switches (as per sl.no.4 of attached technical specifications) , 72.5 kv surge arrestor/lightning arrestor (as per sl.no.5 of attached technical specifications)