tender for award of central rate contract for repair and testing of damaged 33/11 kv power transformer , 1.0) opening of transformer cover, draining oil, de-tanking core coil assembly, assessment and estimation for repair and replacement of part,providing locking arrangement on all valves & plugs as per requirement of specification,cleaning & washing of dust/ rust & dirt from all other parts including core tanks & cooling tubes, re-tank , variable with base date 01.03.2026 , 1.1) for 3.15 mva rating , 1.2) for 5.0 mva rating , 1.3) for 8.0 mva rating , 2.0) supply of following damaged parts requiring replacement complete in all respect, variable with base date 01.03.2026 , 2.1) hv leg coil with insulation, varnish & baking of coil assembly (vacuum impregnation)(the burn leg is to be retained by contractor) , 2.2) lv leg coil with insulation, varnish & baking of coil assembly (vacuum impregnation)(the burn leg is to be retained by contractor) , 3) ht bushing (33 kv) as per relevant iss. , 4) lt bushing (11 kv) & neutral bushing as per relevant iss. , 5) bushing rod & other metal parts including nuts ( material & size of bushing/ rods/nuts as per is specidfication) , 5.1) for hv , 5.2) for lv , 6.0) set of gaskets (rubberized cork neoprene material & size is to be needed) , 6.1) for 3.15 mva rating , 6.2) for 5.0 mva rating , 6.3) for 8.0 mva rating , 7.0) breather dehydrator (silicagel type with fresh silicagel) , 7.1) for 3.15 mva rating , 7.2) for 5.0 mva rating , 7.3) for 8.0 mva rating , 8.0) glass for oil level gauge , 9) taping switch handel only , 9.1) for 3.15 mva rating , 9.2) for 5.0 mva rating , 9.3) for 8.0 mva rating , 10) off loading taping switch without handle , 10.1) for 3.15 mva rating , 10.2) for 5.0 mva rating , 10.3) for 8.0 mva rating , 11) oil drain/ filter valve of gun metal , 12) lt terminal plate with terminals if required , 13) fresh transformer oil of standard quality of isi mark, variable with base date 01.03.2026 , 14) filtration charges if transformer oil supplied by the nigam / repairer of the transformer , 15) sundry items viz cover bolts, plug cap screws, washers, insulation material etc. with minor repairs of tank and other parts if any (denting and welding etc. if required) , 15.1) for 3.15 mva rating , 15.2) for 5.0 mva rating , 15.3) for 8.0 mva rating , 16) cooling tubes/ fins , 17) conservative tank with detachable end plates. , 18) dial type thermometer 100 mm size , 19) dial type thermometer 150 mm size with a set of alarm contact for 3.15 mva and above transformer rating. , 20) double float buchholz relay , 21) rating plate made of stainless steel or brass or alumunium engraved with details as per specification including date of despatch of transformer after repair , 22) earthing terminals , 23) air release valve , 24) arcing horns for ht bushing and lt bushing non adjustable type , 25) winding temperature indicator with alarm , 26) plain capaliary type oil level guage to be provided on the oil conservator with low level indicator , 27) magnetic type oil level gauge , 28) marshalling box for transformers , 29) shut off valve (gun metal ) 1 1/2 , 30) painting inside with two coat of zinc chromate best paint and outside of transformer with two coat of grey paint and marking after derusting , 30.1) for 3.15 mva rating , 30.2) for 5.0 mva rating , 30.3) for 8.0 mva rating , 31) to and fro transportation charges from any of the circle store / sub store to the work of the firm and back , 31) a)loading & unloading charges at firms works and nigams stores (both sides). , 31.a.1) for 3.15 mva rating , 31.a.2) for 5.0 mva rating , 31.a.3) for 8.0 mva rating , 31. b) transportation charges per km. , 31.b.1) for 3.15 mva rating , 31.b.2) for 5.0 mva rating , 31.b.3) for 8.0 mva rating , 32) charges for minor repair where replacement of coil is not involved , 32.1) for 3.15 mva rating , 32.2) for 5.0 mva rating , 32.3) for 8.0 mva rating , 33) labour charges for opening the transformer tank top cover(if required to facilitate maintenance of transformer) after removing required accessories.including all required t&p up to 5 mva transformer. , 34) preventing oil leakage by changing main gasket with material after removing cover. , 34.1) upto 1.6 mva transformer , 34.2) above 1.6 mva & upto 3.15 mva transformer. , 34.3) above 3.15 mva & upto 5 mva transformer. , 35) a) change of hv/lv bushing gasket ring and rubber washers including supply of required material & draining /re-filling of oil as required. , 35) b) for additional hv/lv bushing work. * this amount will not be payable incase the work of removing of top cover gasket is also awarded in the same order. , 36) change of gaskets of valves/radiator / buchhlozes relay including cost of gaskets etc. , 36.1) valves/buchhlozes relay , 36.2) radiator valves. , 37) providing & fixing (including replacement) of hv/lv bushing of reputed make & bushing rod of brass matel including cost of gasket & rubber rings .gasket makes are tabross,tiger, zebra and any other reputed make. , 37.a) hv side , 37.a.1) upto 1.6 mva transformer , 37.a.2) above 1.6 mva & upto 3.15 mva transformer. , 37.a.3) above 3.15 mva & upto 5 mva transformer. , 37.b) lv side , 37.b.1) upto 1.6 mva transformer , 37.b.2) above 1.6 mva & upto 3.15 mva transformer. , 37.b.3) above 3.15 mva & upto 5 mva transformer. , 38) dehydration/filteration and reconditioning of transformer oil (electricity shall be supplied by deptt.) as per norms and testing thereof in presence of sub-station incharge. , 39) cleaning of oil scale deposits over the body and radiators of power transformer with thinner/detergent and de-rusting in perfect manner. , 39.1) upto 1.6 mva transformer , 39.2) above 1.6 mva & upto 3.15 mva transformer. , 39.3) above 3.15 mva & upto 5 mva transformer. , 40) change of following items: , a) oil temperature indicator , b) windingtemperature indicator , c) silica gel container , d) presser relief device make atbus , e) magnetic oil level gauge.make atbus , f) gas operated buchhloz relay( double floating type make atbus)