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Tender For distribution transformer of rating 500 kva, 11kv/415v-240v, 3-phase, 50hz, outdoor type, plinth mounted, the type of tap changer for variation of hv voltage from +5% to -15% in steps of 2.5%, energy efficiency level 3 or better, oil immersed, non-sealed type (transformertank body and cover are bolted), copper wound, primary winding in delta and secondary winding in star (vector symbol- dyn11), onan cooled transformer, confirming to is 1180 (part 1): 2014with amendment nos. 1,2,3,4 or latest, and supplied with all standard fittings mentioned in clause 20.1 of is 1180 (part 1) latest with condition that drain-cum-sampling valve will be applicable for all capacity of transformers. oil temperature indicator & winding temperature indicators will be provided as per clause 20.2 of is 1180 (part 1). terminal agreement: the transformers shall be fitted on high voltage and low voltage sides with outdoor type bushings appropriate voltage and current ratings. the high voltage bushings (3 nos.) shall confirm to is/iec 60137. the low voltage bushings (4 nos.) shall confirm to is 7421. suitable cable-end box along with cable entry hole glands is to beprovided at l.t. side. following has to be submitted by supplier along with supply of material: (i) type test report of transformer having same rating, make (& model if any) and design from nabl accredited lab as per is 1180 (part 1) latest. (ii) routine test certificates as per is: 1180(part 1) latest. (iii) special test certificates as per clause 21.4 sl. no. (a), (c), (d), (e) of is: 1180 (part 1) latest. [ warranty period: 30 months after the date of delivery ]
Tender For corrigendum : supply of main transformer 6531 kva type abb lot 6500 or similar for wag-9 loco as per specn: no. clw/es/3/0456/k , clw/es/3/0507 (for transformertank) and clw/es/3/0508 (for conservator tank) with 350 liters oil separately provided for filling up oil pipes and other accessories. [ warranty period: 30 months after the date of delivery ]
Tender For corrigendum : supply of repair and rewinding e e - opening of transformer cover draining oil de-tanking core- coil assembly assessment and estimation for repair and replacement of parts providing locking arrangement of all valves and plugs , loading and unloading of transformer at side cph and firms work premises hiring , hv leg coil with insulation varnish and baking of coil assembling vacuum , lv leg coil with insulation varnish and baking of coil assembling vacuum impregnation new ec grade copper with insulation , set of gaskets rubberized cork neoprene material and size is needed for hv and lv , breather dehydrator silica gel type with fresh silica gel 01 kg , fresh transformer oil of standard quality as per the isi mark for main tank and oltc , double float buchholz relay including all accessories , air release valve including all accessories if required , magnetic oil gauge including all accessories if required , radiator valve including all accessories if required , reassembling of 3 15 mva transformer dyn 11 star delta connected with proper size of copper strip , replacement change of complete gaskets rubberized cork neoprene material , the oltc was completely repaired with the replacement , painting charges of transformertank having hot oil resistant paint inside and synthetic enamel paint on transformer after cleaning of tank and complete painting outside etc as reqd. , less the cost of old and burned transformer oil plus old transformer oil of oltc , less the cost of old and dismantling insulated copper