Tender For Procurement Of 145Kv Isolator For Ujvnl Chilla Project 1 145kV, 1600A, 3-Ø, HDB isolator (mechanically ganged motor operated) line isolators/ dis-connectors with 2 earth switches (locally motor operated & mechanically ganged) complete with operating mechanism boxes and accessories etc. excluding support insulators, structure and terminal connectors Nos. 5 2 145kV, 1600A, 3-Ø, HDB isolator (mechanically ganged motor operated) with 1 earth switch (locally motor operated & mechanically ganged) complete with operating mechanism boxes and accessories etc. excluding support insulators, structure and terminal connectors Nos. 8 3 145kV, 1600 A, 3-ph HDB isolator (mechanically ganged motor operated) without earth switch complete with operating mechanism boxes and accessories etc. excluding support insulators, structure and terminal connectors Nos. 8 A Internal surfaces of steel linings, penstock, turbine spiral casing, valves and other wetted internal ferrous surfaces Intermediate Coat: 2 x micaceous iron oxide paint, 2-component Base: epoxy resin 2 x 100 This paint system is for temperatures up to 120oC Finish Coat : 1 x topcoat, 2- component Base : epoxy resin 1 x 100 The colours of intermediate and finish coats shall be black - brown - black Total 300 PAINTING SYSTEM Type Description Surface Preparation Paint System Main Dry Film Thickness in m Remarks B External surfaces of penstocks, Gantries, Cranes, Lifting Beams, Fixed Hoist supports and other Drive Supports Sa 2 1/2 - 3 Prime Coat: 1 x zinc dust primer, 2- component Base: epoxy resin 1 x 50 The pure metallic zinc shall be at least 92% of the polymerized film Intermediate Coat: 2 x micaceous iron oxide paint, 2 x 80 This paint system is for temperatures up to 60oCFinish Coat : 1 x micaceous iron oxide paint, HB epoxy or PU paint coloured, 2- component Base : epoxy resin 1 x 80 Total 290 C External surfaces of indoor ferrous parts such as valves, connection pipes, oil carrying tanks and pipes, supporting structures, gantries, etc. Sa 2 1/2 - 3 Prime coat : 1 x zinc dust primer, 2- component Base: epoxy resin 1 x 50 The pure metallic zinc shall be at least 92% of the polymeriz ed film Intermediate Coat: 2 x micaceous iron oxide paint, 2- component Base : epoxy resin 2 x 80 This paint system is for temperat ures up to 120oC Finish Coat : 1 x topcoat, 2- component Base : epoxy resin 1 x 50 Total 260D Control cabinets, panels, cubicles, electric motors. Sa 3 and de-grease before painting Prime Coat: 2 x zinc chromate primer, 2- component Base: epoxy resin 2 x 40 Finish Coat : 2 x topcoat, 2- component Base : epoxy resin 2 x 50 Total 180 E Interior surfaces of oil tanks Sa 2 1/2 - 3 2 x thixo trop consistent paint Base : 2 x 220epoxy resin Total 440F Frames, cover plates, pipes and tubes, and miscellaneous steel parts not especially mentioned Hot-dipgalvanised as specified in Section 4.12.8.3 and degrease before painting Intermediate Coat : 1 x micaceous iron oxide paint, 2- components Base : epoxy resin 1 x 80 All the parts inaccessible for painting shall be only hot-dip galvanised Finish Coat 1 x topcoat, 2- component Base: epoxy resin 1 x 50 Total, incl. zinc 200
