supply of 2 nos . 50 mva , power transformers and related services for nalbari and khaloigaon gss , transformer , supply of 50 mva , 132 / 33kv three phase power transformer ( without transformer oil ) with all fittings and accessories as specified including cost of all routine tests including loading and unloading at site . , transformer oil for above transformer plus 10% extra . , nifps , supply of n2 fire prevention & extinguishing system as per clause 3 . 32 , section-3 , oil sampling bottle , supply of stainless steel oil sampling bottles ( 1 litre capacity ) as per clause 3 . 30 , section-3 & syringes for oil sampling , mandatory spares , hv bushing , lv bushing , neutral bushing , magnetic oil level gauge with low oil level , buchholz relay complete with float and contacts ( main tank ) , local wti complete with sensing device & contacts , local oil temperature indicator with contacts & sensing device , remote wti complete with three sets of 4-20ma contacts , remote oti complete with three sets of 4-20ma contacts , pressure relief device , set of valves ( complete set for one transformer ) , breather assembly ( one of each type ) for conservator and oltc , remote tap position indicator , oil surge relay , complete set of gasket , cooler fan with motor , 132 kv terminal connector , 33 kv terminal connector