ELECTRICAL WORK

Fabrication and fixing of 33KV pin support on existing 4Pole / DP (Materials supplied by WBSEDCL)

Supply, Fabrication of GI Structure made of Channel/Angle sections etc as per approved drawing. All structural steel members and nut bolts shall be galvanized after fabrications as per IS :4759 (Zinc coating shall not be less than 610 gm /Sqmtr) for all structural steel members .All structural Steel shall conform to IS:2062. All weld shall be 6mm filled weld unless specified otherwise. All nuts and bolts shall be of property class 5.6 of IS:1367. Plane washer shall be as per IS:2016 and Spring washers shall be IS:3063 as per technical specifications ,Scope of works and approved drawings . ( CT PT Structure 1 set as per drawing : PLN(D)/SS/57, weight/Piece 199.66 kg, Cable end 11 KV Box Support Structure 3 set as per Drawing: PLN(D)/SS/85, weight/Piece 375 Kg.)

Supply and fixing of 40mm dia G.I. Pipe (up to 5ft long) for maintain of proper height of Isolator Pipe.

Making and fixing of cable guard with MS channel for protection of 11kv cable and as per direction of the site in charge. (materials supplied by WBSEDCL)

Galvanized of M.S. section

Erection of fabricated G.I. 33 KV C.T. P.T. Structure (Drawing NOS PLN(D)/SS/57) on existing plinth

Supply and fixing of C.T. P.T. Junction Box on existing structure with necessary disconnect linck switch, base channel etc. .as per direction of site-in-charge.

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)as per direction of site-in-charge.

Supply and fixing of different type of clamp connector bolted type /compress type as required and switable for ASCR 200/100 sqmm conductor and as per direction of the site-in-charge. (Materials Supplied by the contractor)

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)

Existing 33KV CR type Isolator dismantling and re-erection HL/LL

Erection of 33KV C.T. as per direction of the site in-charge. (Materials supplied by WBSEDCL)

Installation of 33KV VCB structure and VCB on existing plinth (Materials supplied by WBSEDCL)

Existing 33KV VCB dismantling and re-Installation on existing plinth.

Installation of 42 KV L.A. on existing structure. (Materials supplied by WBSEDCL)

Installation of 33 KV Control & Relay Panel for PTR Control in the control room floor, including grouting of foundation bolt and ferulling (Bolt and T- type ferule, lugs, shocket, DC clamp,etc to be supplied by the contractor) as per direction of site-in-charge. (Panels and Cable to be supplied by WBSEDCL)

Fixing of A.C.S.R. 200/100 sq. mm Panther/ Dog Conductor with Dropper, Jumper and necessary connection complete. (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 150 x 150 x 6mm Plate on top of the Pipe with electric arc. welding complete and as per direction of the site-in-charge. (Require of betonite powder per bore hole approx. weight 22Kg) (Materials supplied by the contractor)

Construction of earth pit with 600 x 600 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)

Providing enclosure on the top of the earth pit by RCC cover slab/ C.I. hinged inspection cover and as per direction of site-in-charge.(Materials supplied by the contractor)

Laying of earth mat by 65 x 6mm / 50 x 6mm G.I.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 Contractor)

Fixing of sub-station earthing strips i.e. riser by 65 x 6mm / 50 x 6mm G.I. 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 Contractor)

Laying, Looping, Connections and jointing of copper control cable 1.1 KV armoured 4Cx 2.5 sq. mm with supply and fiing of cable lugs, Double Compression glands, tapes, sockets , Tee type ferrul, Tie etc.

Supply of 33KV VCB Structure switable for new plingth abd as oer durection of the site in charge. (Approx weight 275KG)

Existing RTCC Panel dismantling and re-installation of the same and as pre direction of the site-in-charge.

Existing 33KV CR Panel dismantling from old control room and re-intstallation of the same on new contrtol room from 10MVA PTR

Making and fixing of jumper with 100/ 50 sq mm conductor for 11KV Out going feeder DP and as per direction of the site-in charge. (Materials supplied by WBSEDCL)

Dismantling and re-Fixing of 42 KV Post Insulator

Dismantling and re-move from site of 12/ 42 KV Post Insulator, 11/ 33 KV DISC INSULATOR, 12 KV/ 42 KV LA.

Supply and fixing of Bus Pipe OD 48.26mm (+-)0.65 and thickness 3.68mm (+-) 0.36mm as per IS Code5082-1998

Existing Rail Pole remove form site

Existing PCC 4 Pole remove from site.

Existing STP DP remove from site

Existing 33KV CR type Isolator dismantling and re-installation of the same for temporary arrangment

Existing double compression gland remove and re-fixing the same as per direction of the site-in-charge.

Painting of all welded joint portion by anti -corrosive black paint.as per direction of site-in-charge.(Materials supplied by the Contractor)

Erection of neautral earthning support for temporary

Fabrication and installation of 33KV and 11KV DP for temporary power supply to station service transformer and 5MVA power transformer

Fabrication and fixing of 33KV F/U for station service and powr transformer for temporary arrangment.

Up rooting and re-laying of control cable assortd size

Existing damage 33/66 KV Isolator remove from site.

Supply and fixing of H/W SINGLE Tension clamp for PANTHER Conductor (As per specification) as per the direction of the Site-In-Charge.

Supply and fixing of Aluminium clamp connector for connection of aluminium bus / conductor / isolator to 33 KV U.G. cable for temporary arrangement, including all materials, labour, tools and tackles, complete in all respects, as per the direction of the Site-In-Charge.

Demolition and removal of existing iron structure from site for creation of spread out sub-station, including all labour, tools and tackles, complete in all respects, as per the direction of the Site-In-Charge.

Painting of 33KV CT