Renovation and modification of Sariahtali DSS

Renovation and modification of 33/11 kV Sariahtali DSS from Auto-recloser based Sub-station to conventional Sub-station under Nalbari ESD-I, APDCL

BoQ_Ver3.0

Name of the Bidder/ Bidding Firm / Company :

ANNEXURE - 1 1. Renovation and modification of 33/11 kV Sariahtali DSS from Auto-recloser based Sub-station to conventional Sub-station under Nalbari ESD-I, APDCL

NUMBER #

TPGO-DBCR with earth switch & GI mounting structure 800 Amps

11 kV 10 kA Lightning Arrestor (station type, class 2)

11 kV 5 kA Lightning Arrestor (line type, distribution class )

11KV Indoor VCB Panel - 9 Unit Equipped with IEC 61850 compliant numerical relays, 0.5s accuracy class cat-A, E2, M2, C2 class Vacuum Circuit Breaker of 26.3kA STC, 1200 A busbar & other components as per standard Technical specification of APDCL

Battery charger 110V suitable for charging 150AH, 110V Battery Bank , Dual mode double circuitry SCR Variac Float & Boost Charger

150AH 110V Maintenance Free Battery Bank (VRLA Battery Bank)

415V AC Distribution Board (O/g feeders 6 Nos.)

110V DC Distribution Board (O/g feeders 4 Nos.)

11 kV Grade (armoured) 1Cx 300 sqmm

XLPE Cable jointing Kit-11 kV, 1Cx300 sqmm (outdoor type)

ACSR Wolf conductor

Aluminium Lug- 300 sqmm

GI Nuts & Bolts with washer (assorted)

33 kV Polymeric Pin Insulator (FRP-34mm)

33 kV Disc Insulator (polymeric) 70 kN B&S type

H/w fittings for Disc Insulator B&S 70 kN tension type

PG clamp for ACSR Wolf

Control Cable, 1.1 kV Grade (copper), 4C x 2.5 sqmm

Control Cable, 1.1 kV Grade (copper), 2C x 2.5 sqmm

Control Cable, 1.1 kV Grade (copper), 7C x 2.5 sqmm

GI earthing Pipe 50mm dia 3m length 3.15 mm thickness with perforated holes of 15mm dia at 30 cm interval along length of the pipe

Installation of earthing system with MS flats 50x10mm (for earthing mat) with GI flat riser 25x6mm (for earthing conductor) and GI pipe 50mm dia of length 3000mm for earth electrodes) including excavation of earth welding etc. as necessary

GI Strip 25x3 mm for DTR earthing

GI Strip 50x6 mm for DTR Neutral earthing

Construction of RCC switchyard Cable Trenches Size (500x675)mm including trays of MS/GI for cable including supply of all materials and installation of 75 mm RCC slab for cover as per specification and drawing

RCC foundation for 33KV Isolator as per standard drawing and technical specifications

Switch yard gravelling of 0.15 mtr. (thickness) by 40mm size crushed stone