SITC of High Mast with allied electrical works.

Amount

HIGH MAST TOWER

Supply & Delivery of 16 Mtr. High mast Tower of Polygonal Shape Tappared for Asymmetric loading of up to nine luminaries for Wind Speed up to 180 Km/hr. The Mast shall be made from steel grade of BSEN 10025 and should be in two sections (each of length 8375 mm or top length 5470mm & bottom length 10980mm) with the bottom section shall be of 4 mm thick and top section of 3 mm thick. Both the sections should be joined by telescopic slip joint. The bottom dia should be of 410 mm or more while top dia should of 150 mm. The bottom section should have Anti Vandalism looking type door size of 1200 mm x 250mm.

The mast section should be fabricated for metal protection through hot dip galvanization and thickness of galvanization should not be less than 86 microns. The mast should be supplied with Components including Head Frame & Pulley Assembly, Winch Bracket, Lantern Carriage Ring for Luminaries and Driver Box Mtg. Arms, Resting Bracket Guide Ring, compensating Disc, Lightening Arrestor, LED AOL, Wire Rope, Safety Wire Rope, D Suckle Clamps, nuts and Bolts, internal Cable, foundation Accessories, winch assembly with two drums with SWL 750 KG and internal power tool of 2 HP or higher size motor with control panel. The size of base plate diameter should be of 570 mm or more with thickness should be of 25 mm.

Erection of 16 Mtr. High mast Tower on CC foundation with ratio of 1:2:4 as per design & casting housing of suitable PCC / RCC shallow foundation with foundation bolts manufacturing from special steel for highmast by chips (pakur varitey) maximum agreegate size 20 mm incl. excavation of earth for foundation of all depth as per approved drawing.

Making and adopting micro tunneling of 40 mm dia hole to facilitate cable entry without disturbing and damaging as per requirement and as per direction of EIC (3 ft below the ground level).

CONTROL PANEL

Supply & Installation of outdoor compartmentalized double door type MS mini Pillar Box complete with car venture type base pedestal for holding the upper compartment of the Pillar Box. The overall dimension of the above Pillar Box 1050 x 750 x 450 mm, made from 4mm thick MS sheet with single door for free opening. The above door fitted with side of the Pillar Box by single set hinge system arrangement with providing capsule hinge welded with the Pillar Box rigidly incl. providing door handle and providing Vent at the top side of the Pillar Box incl. padlock system on the above Pillar Box for extra protection incl. S&F 7 (seven) lever (Godrej) padlock with duplicate key in front side. There should be provision inside the Pillar Box of 1 no. suitable size of Hylamp sheet holding the electrical accessories with suitable size of angle iron frame fitted inside the middle portion of the above Pillar Box and S&F of following accessories.

Incomer : 415V, 32A, FP MCB (C-curve, 10kA) - 01 no. Bus-Bar : 415V, 50A, Cu bus bar on porcelain chair - 04 nos. Motor Controller : i. 415V, 25A, TP MCB (C-curve, 10kA) - 01 no. ii. 415V, 16A/20A TP Reversing Contactor with suitable no NO, NC auxullary contact - 01 no. iii. Electronic Thermal Over Load Relay of suitable size - 01 no. iv. ON, OFF, Forward (Up) & Reverse (Down) push button with conventional color code - 04 nos. v. Forward (Up), Reverse (Down) & Trip Indicator Lamp with conventional color code - 03 nos.

Surge Protection : One Surge Protection Device of appopriate rating. Auxullary : i. 240V, 16A, SP MCB (C-curve, 10kA) & 240V, 16A, 6 pin Socket (Piano) - 01 no. ii. 240V, 2A, SP MCB (C-curve, 10kA) & Holder with Lamp - 01 no. iii. 8''x6'' Danger Board.

SUPPLY & FIXING OF LIGHTS

S&F 240 Volt, 200/250Watt, LED Flood Light with innovative thermal management LED fittings with IP66 protection complete with all accessories with incl. S&F suitable size dia GI clamp, nut & bolts etc. (Make: Philips / Bajaj or any equivalent approved make)

SUPPLY & LAYING OF CABLE

Supply & Delivery of following size Al/XLPE/SWA/PVC or Al/XLPE/STA/PVC cable.

4 Core 10 Sq.mm

Supply & Installation of 1.1 KV five core (5C) 4 sqmm stranded 'FR' PVC insulated & unsheathed copper Cable. [High mast top to control panel].

Supply & Installation of 1.1 KV three core (3C) 4 sqmm stranded 'FR' PVC insulated & unsheathed copper Cable. [High mast bottom to control panel].

Laying of one No. cable upto 35 sqmm in underground trench 460 mm wide x 760 mm average depth, with brick protection on thetop of the cable with 8 (eight) Nos. bricks per metre, includingfilling the space between the brick & cable and also the trench with shifted soil, leveling up and restoring surface duly rammed. (KEI / Polycab or any approved make)

Supplying & Fixing medium gauge GI Pipe (ISI-Medium) Protection with necessary fittings and jointing metarials.

25 mm dia

40 mm dia

GLAND & FINISHING

Supply & Fixing compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture-proof entry of XLPE/PVC armoured cables as below :

4 Core 10 sqmm

Finishing the end of following XLPE/PVC armoured cables by crimping method incl. supplying and fixing solderless socket (Dowels make), tapes, anticorrosive paste & jointing materials.

4 Core 10 sqmm

Finishing of the PVC insulated wire ends by socketting with pin/ ring type copper sockets and insulated tapes etc., including supplying sockets, tapes.

EARTHING

Earthing with 50 mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1 x 4 SWG GI (Hot Dip) wire (4 Mts. long), 13 mm dia x 80 mm long GI bolts, double nuts, double washers incl. S & F 15 mm dia GI pipe protection (1 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level driven to an average depth of 3.65 Mts. below the ground level as below:

By TATA-Medium GI pipe

S&F earth busbar of galvanized (Hot Dip) MS flat 25 mm x 6 mm on wall having clearance of 6 mm from wall including providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required.

COMMISSIONING and T&C

Vendor have to submit four (4) set for each of Foundation Drawing, High Mast Tower Assembly & Control circuit wiring dragam. Vendor have to submit O&M manual.

DULAL DUTTA

Debabrata Bhattacharjee