electrical structure , drawal of wire bus , installation of equipments , laying of copper control - power cable , yard lighting , earth mat and other related electrical work for new bhabta 33 kv ss under berhampore division in the district of msd , erection of gantry 4-pole ( 8mtr / 9mtr . as per site requirement ) structure with concrete foundation & painting with provision for isolator & la along with supply of all nuts & bolts & la base plate 430x430x8 mm . ( other materials like pole , supplied by wbsedcl ) , erection of 4-pole structure with concrete foundation & painting with provision for isolator & la along with supply of all nuts & bolts & la base plate 430x430x8 mm . ( other materials like pole , supplied by wbsedcl ) , erection of h / l 4-pole structure on 9 mtr . long p . c . c . pole for isolator / bus support with concrete foundation & painting with supply of all nuts & bolts ( drawing no . re / ss / 34 ) ( other materials supplied by wbsedcl ) , erection of l / l 4-pole structure with 8mtr . long p . c . c . pole for isolator support ( re / ss / 41 ) and end bus support with concrete foundation & painting with supply of nuts & bolts ( drawing no . re / ss / 38 ) ( other materials supplied by wbsedcl ) , erection of d . p . structure on 9 mtr . long p . c . c . pole for 11kv l . a . & fuse unit , isolator , cable support with concrete foundation & painting including supply of nuts & bolts . ( other materials supplied by wbsedcl ) , erection of 12 . 08 mtr . long rail pole with concrete foundation with painting ( 2 coat red oxide & 2 coat aluminium ) for shielding arrangement ( re / ss / 45 ) . ( rail pole supplied by wbsedcl ) , erection of 11 kv cable support structure by m . s . channel with fitting fixing & painting complete ( ms channel / angle supplied by wbsedcl ) , erection of l . t . cable support structure by m . s / gi channel with fitting fixing of lt kiosk including painting ( materials supplied by wbsedcl ) , erection of neutral earthning with gi 65x65x6 mm flat supported by ms channel i . r . o . 6 . 3mva ptr / station service transformer & necessary connection with earth mat ( materials supplied by the wbsedcl ) , supply & erection of fabricated g . i . 33 kv c . t . p . t . structure ( drawing no . pln ( d ) / ss / 57 ) on existing plinth , supply and fixing of c . t & p . t . junction box on existing structure with necessary required nos . of d - link connector . , supply & fixing of double compression type gland complete with brass , rubber rings , for dust & moisture proof entry of pvc / a cable for 4 / 8 / 12 / 16core 2 . 5 sq . mm pvc / a cable ( supplied by the contractor ) . , supply and fixing of 40mm dia g . i . pipe for maintain of proper hight of isolator pipe ( if required ) . , supply and fixing of different type of clamp connector bolted type switable for ascr 200 sqmm panther conductor and as per direction of the site-in-charge . ( supplied by the contractor ) , supply and fixing of poly pipe 100mm dia up to 3mtr long for cable gurard , fixing of 33 kv polymer disc insulator . ( materials supplied by wbsedcl ) , fixing of 33 kv polymer pin insulator . ( materials supplied by wbsedcl ) , fixing of 33 kv c . r . type isolator with proper adjustment ( without earth switch ) ( materials supplied by wbsedcl ) , fixing of 33 kv c . r . type isolator with proper adjustment ( with earth switch ) , fixing of 11kv tpgo isolator 400a , erection of 33kv c . t . as per direction of the site in-charge . ( materials supplied by wbsedcl ) , erection of 33kv p . t . as per direction of the site in-charge . ( materials supplied by wbsedcl ) , installation of 33 / 0 . 433kv 100kva station service transformer on existing plinth including transportation from berhampore divisional store to work site . ( materials supplied by wbsedcl ) , installation of 11 kv indoor type v . c . b ( 11 panel ) in the control room floor , including grouting of foundation bolt ( bolt to be supplied by the contractor ) making of necessary cable connection with earthing complete . as per direction of the site-in-charge . ( materials supplied by wbsedcl ) a ) incoming----02 no . b ) outgoing-----06 no . c ) bus coupler--01 no . , installation of 33kv vcb structure and vcb on existing plinth ( materials supplied by wbsedcl ) , installation of 42 kv l . a . on existing structure . ( materials supplied by wbsedcl ) , installation of 12 kv l . a . on existing structure . ( materials supplied by wbsedcl ) , installation of 33 kv control & relay panel in the control room floor , including grouting of foundation bolt & necessar connection as per direction of site-in-charge . ( materials supplied by wbsedcl ) , installation of 33kv rtcc panel in the control room floor , including grouting of foundation bolt ( bolt to be supplied by the contractor ) as pre direction of the site-in-charge . ( materials supplied by wbsedcl ) , installation of battery rack , 30v battery with necessary charging and 30v battery charger including fixing of foundation bolt as required with earthning complete from earth bar to charger by 25 x 5mm copper flat , bolt and copper flat supplied by the contractor ( other materials supplied by wbsedcl ) . charging to be done by agency with filling of charging chart as prescribed by manufacturer . , h . t . stay set complete ( materials supplied by wbsedcl ) , fixing of inverted earth spike on rail pole top and necessary welding with rail pole & eath mat by ms / gi flat ( all materials to be supplied by wbsedcl ) , fixing of a . c . s . r . 200 sq . mm panther conductor with dropper jumper complete . single conductor . ( materials supplied by wbsedcl ) , stringing & sagging of acsr 50 sq . mm single conductor for shielding wire . ( materials supplied by wbsedcl ) , installation of earth electrode by 40mm dia 3mtr . long perforated g . i . pipe as a earth electrode including making of borehole and lowering the pipe with filling of borehole by betonite powder and excavated earth with fixing of 230 mm x 230 mm x 6mm gi plate on top of the pipe with electric arc . welding complete . ( required of betonite earthing compuund to be supplied by agency . per bore hole approx . weight 40kg ) , construction of earth pit with 600mm x 600mm wide x 75mm brick wall & plastered outer & inner side including neat cement complete and providing enclosure on the top of the earth pit by rcc cover slab / c . i . hinged inspection cover . as per direction of site-in-charge . ( materials supplied by the contractor ) , laying of earth mat by 65x65x 8 mm flat including match alignment cold bending electric arc . welding with excavation of earth & refilling the same after laying if earth mat . as per direction of site-in-charge . ( materials supplied by the wbsedcl ) , fixing of sub-station earthing strips i . e . riser by 65 x 6mm / 50 x 6mm flat including earthing of newly erected sub-stn . structure & equipments including electric arc . welding lap jointing complete and painting by anti -corrosive black paint as per direction of site-in-charge . as per direction of site-in-charge . ( materials supplied by the wbsedcl ) , painting of all welded joint portion by anti -corrosive black paint & gi steel member cutting points by red oxide & aluminium paint ( materials supplied by the contractor ) , laying of 11 kv xlpe u . g . cable 3 x 300 sq . mm 3 core on existing trench from 6 . 3 mva transformer to 11 kv vcb . as per direction of site-in-charge . , laying of 11 kv xlpe u . g . cable 3 x 185 sq . mm 3 coreon existing trench from 11 kv vcb to out-going terminal dp and as per direction of site-in-charge . , fixing of end termination joimt out door type for 11kv xlpe cable including fixing of channel / angle at the existing structure as per direction of site enginner , laying of