Construction of one 33 KV feeder bay and allied works at Gobardanga 33 by 11 KV Substation under Habra Division WBSEDCL

Amount

Gantry & 4 Pole structures( including 450x100 mm thick cement concrete (1:3:6) base block below Pole and hard jhama metal cement concrete (1:2:4) with 0.30 mtr. Muffing above ground level including neat cemented finish with supply of all items.)

Erection of four pole Gantry cum Isolator Structure along with 33kV cable raising on support and LA arrangement including 9 mtr PCC pole with foundation (PCC Pole will be supplied by the WBSEDCL) along with fittings complete with Insulators & other accessories (ref drg: RE/SS/39) except fittings of structures and 33 kV 400A H.L. CR Type isolator

Supply, fabrication and erection of Galvanized Iron Structures as per drg no. RE/SS/39(as per IS:4759 and zinc coating shall not be less than 610gm/sq. meter for all structural steel members in Hot Dip Galvanization Method)

33 KV Current Transformer

Erection and commissioning of 33 KV Current Transformer on existing structure and Necessary Connection with ACSR 200 sq mm conductor with supply & erection of water proof hinge door junction box of good quality SMC and Compression type Al connectors at both end of CTs with Bi-metalic Plate (CTs 400-200/1A 2C = 2C/200-100/1A 3C & ACSR 200sq mm will be supplied by WBSEDCL) (3 NOS CT =01 SET )

33 KV Potential Transformer

Erection and commissioning of 33 KV Potential Transformer on on existing structure and Necessary Connection with ACSR 200 sq mm conductor with supply & erection of water proof hinge door junction box of good quality SMC and Compression type Al connectors of PTs with Bi-Metalic Plate,pin insulator (PT,Insulator & ACSR 200sq mm conductor will be supplied by WBSEDCL) (03 NOS PT =01 SET)

33 KV VCB

Erection and commissioning of 33 KV VCB along with its structure(with assembling) on existing foundation with proper alignment, and connection with ACSR 200 sq mm conductor and Compression type Al connectors with Bi-Metalic Plate ( VCB & ACSR 200sq mm conductor will be supplied by WBSEDCL)

33 KV Indoor type, SCADA compatible Control and Relay Panel

Erection and commissioning of 33 KV Indoor type, SCADA compatible Control and Relay Panel for Feeder control with Directional relay on concrete floor by grouting 75×40×6 mm G.I. Channel (to be supplied by the agency) and cutting of concrete base in control room including necessary connection with Relays, Metering/ Measurements equipments etc. with supply and fixing of Gland, Ferrules, PVC Tape and Sockets etc.(Only CR Panel for PTR will be supplied by WBSEDCL)

42KV Lightning Arrestor

Erection of 42KV Lightning Arrestor on existing Structure and necessary connection with ACSR 200 sq mm conductor with connectors( 03 NOS LA =01 SET )

33KV CR-type, 400amps isolator

Fixing of 33KV CR-type, 400amps isolator (HL Isolater will be supplied by WBSEDCL) along with fixing of isolator handle and associated parts with proper adjustment for smooth operation with necessary connection as per instruction of site engineer.

Fixing of 33KV CR-type, 400amps isolator (LL Isolater will be supplied by WBSEDCL) along with fixing of isolator handle and associated parts with proper adjustment for smooth operation with necessary connection as per instruction of site engineer.

Panther Bus

Supply & Installation of Bi metalic connector isolatpr pad to panther (Sample to be approved by the Site Engineer)

Supply & Installation of CT & PT pad to panther connector (Sample to be approved by the Site Engineer)

Supply & Installation of Clamp type connector LA pad to ACSR Panther (Sample to be approved by the Site Engineer)

Supply & fixing of 33 KV VCB pad to Panther (Sample to be approved by the Site Engineer)

Making of compression joint for ACSR Panther

Supply & Erection of Lattice G.I. structure for electrical equipments etc. all complete as per approved drawing, Specification and direction of the Engineer (drawing supplied by WBSEDCL). ( galvanizing as per IS:4759 and zinc coating shall not be less than 610gm/sq. meter for all structural steel members in Hot Dip Galvanising Method.)

33 kV CT/PT Structure (Ref drg: PLN(D)/SS/57)

Laying of Control Cables in cable trench/ pipes/underground/overhead(with fixing of Cable tray) laying including their termination at indoor/outdoor terminals including supply of glands, lugs, cable ties, tagging etc as required as per Technical Specification, approved Drawing of WBSEDCL & Scope of works

4 Core 2.5 sqmm armored, stranded copper conductor, PVC insulated and PVC sheathed cable

8 Core 2.5 sqmm armored, stranded copper conductor, PVC insulated and PVC sheathed cable

12 Core 2.5 sqmm armored, stranded copper conductor, PVC insulated and PVC sheathed cable

Erection of Earthing complete as per TS (All materials including G.I. Flat will be supplied by the contractor)

Drawal of earth riser alongwith connection by 50 x 6 mm G.I. flat from the earth mat to each of the yard structures and power equipments like power transformer,VCB,CT etc by electric welding. Tag welding shall be done by continous process. Application of zinc chromate paint shall be done on welded portion immediately after jointing.

Drawing of earth lead with 50 x 6 mm G.I flat for earthing of equipment installed inside control room building and connection arrangement from earth bus to equipment such as 11kV VCB, RTCC panel, CR panel, Battery charger etc by tag welding with necessary painting of earthing bus joints.

Others Electricalc works of the Substation

Fixing of 33KV Pin insulator with Pin with all necessary connections (Pin insulator will be supplied by WBSEDCL)

M/s. K.R. Construction (BID ID -5969287)

K. P. CONSTRUCTION (BID ID -5968696)

Zenith Enterprise (BID ID -5969225)