REPAIR MAINT OF OVERHEARD CONDUCTOR AND ALLIED EXTERNAL ELECTRIFICATION WORKS AT LEBONG UNDER AGE I DARJEELING

Amount

Dismantling ACSR or AAC Conductors from the Disturbed Span including Line Spacer, etc., complete all as specified and as directed.

Dismantling Earth Wire, Cradle Guarding, etc., complete all as specified and as directed.

Dismantling Cross-Arms of Mild Steel Channel or Angle Sections, etc, including Mild Steel Bolts, Nuts, Washers, etc., complete all as specified and as directed.

Dismantling Insulators like Pin type, Shackle type from existing Street/ Security Light Pole of any description and any size, seggregating Seviceable Insulators and keep in safe custody for re-use, complete all as specified and as directed.

Excavation in Trenches, not exc. 1.50 Metre wide and not exc 1.50 Metre in depth for any type of foundation/cable trench and getting out in Soft/Loose Soil, complete all as specified and as directed.

Returning, Filling in, including Spreading, Levelling, Watering and Well Ramming in Layers not exc. 25 Cm in Soft/Loose Soil, complete all as specified and as directed.

Removing excavated Materials (Soils) not exc. 50.00 Metre and depositing where directed at a level not exc. 1.50 Metre above the Starting Point in Soil, complete all as specified and as directed.

M&L Sand Cushioning (dry) in trenches/ducts for protection of UG Cables (below, above and around the UG Cable laid in Trenches) of 230mm Spread thickness (8 Cm in depth before laying the Cable and 15 Cm in depth after laying the Cable) and consolidated (punned) upto 180mm thickness, complete all as specified and as directed NOTE : For the purpose of Payment, Punned thickness of Sand Cushioning only will be measured and paid for.

Supply & laying locally available, well burnt Sub-class ‘B’ Bricks/ Fly Ash bricks of size 250x125x75mm (± 8% tolerance), laying perpandicular to UG Cable laid in trenches over Sand Cushion as Cable Protection, complete all as specified and as directed.

Taking down/out unserviceable UG Cables of any Cross Sectional Area and Connections and joints including Pipes, Bricks, etc of any description laying in trenches or fixing with Walls/Poles, segreating serviceable Bricks/Precast covers, Pipes, Cables etc, and keep in safe custody for reuse, complete all as specified and as directed. NOTE: Earthwork will be measured and paid under appropriate Items.

Supply & laying of LT XLPE Cable, sheathed PVC insulated, screened, PVC bedded, Galvanised Steel Strip or Wire armoured, Electic Power Cable (heavy duty) with Aluminium Conductor, 1100 Volts grade, cross-sectional area 120 Sqmm 3.5 Core, laid in Pipe/ Ducts/ Trenches/ under Floor/ under Road/ fixing on pole/ above floor including Testing, complete all as specified and as directed. NOTE : Earthworks, Sand Cushioning, Bricks, GI Pipe, etc. will be measured and paid under appropriate Items. MAKE:- KEI/POLYCAB/ HAVELLS/ FINOLEX

All as per Item No. 11 here-in-above, but cross-sectional area 25 Sqmm 4.0 Core, laid in Pipe/ Ducts/ Trenches/ under Floor/ under Road/ fixing on pole/ above floor including Testing, complete all as specified and as directed. NOTE : Earthworks, Sand Cushioning, Bricks, GI Pipe, etc. will be measured and paid under appropriate Items. MAKE:- KEI/POLYCAB/ HAVELLS/ FINOLEX

All as per Item No. 11 here-in-above, but cross-sectional area 10 Sqmm 2.0 Core, laid in Pipe/ Ducts/ Trenches/ under Floor/ under Road/ fixing on pole/ above floor including Testing, complete all as specified and as directed. NOTE : Earthworks, Sand Cushioning, Bricks, GI Pipe, etc. will be measured and paid under appropriate Items. MAKE:- KEI/POLYCAB/ HAVELLS/ FINOLEX

Supply installation commission and testing in-replacement of Factory made Out door cubical type LT Bus-bar chamber (for 01 No Incoming and 02 Nos Outgoing) suitable for 3 Phase 4 nos tinned copper strip 300 Amps, 415 Volts, 50 Hz, mounted on Porcelain insulator of suitable size totally enclosed weather, dust and vermin proof (Protection Class IP-54) made out of not less than 60 X 60 X 6 mm angle iron frame with cable entry exit through bottom with double compression copper stainless steel cable glands and gaskets and 3.15 mm thick MS CRCA sheet front and back openable door with proper hinge and locking arrangements, painted externally and internally with powder coat painting (RAL-7032) of gray colour after necessary preparation of surfaces incl. necessary PCC (1 : 3 : 6) type C2 as in foundation all as specified and as directed, comprising of the following :- (a) Internal wiring with copper conductor cable of suitable size-1Job. (b) Bus-bar shall be insulated with colour codes/ Sleeves/ Taps.

S&F of Galvanised Iron Pipe 50mm bore (dia) ‘light grade’ for protection of UG Cable, laid under Floors or Road Crossing, fixing to Pole with and including Mild Steel Clamps, Nuts, Bolts, etc., complete all as specified and as directed. MAKE:- JINDAL/BANSAL/ NEZONE/ TATA

S&F of Galvanised Iron Pipe 40mm bore (dia) ‘light grade’ for protection of UG Cable, laid under Floors or Road Crossing, fixing to Pole with and including Mild Steel Clamps, Nuts, Bolts, etc., complete all as specified and as directed. MAKE:- JINDAL/BANSAL/ NEZONE/ TATA

M&L for cutting existing road/hard standing not exc 20x30cm in wide & depth getting out excavated material for laying cable/GI tube, returning filling & well rammaing watering finished suraface of depth not less than 10 cm from top using PCC 1:3:6, type C-2 (using 40mm graded aggregate); including removal of surplus soil complete all as specified and as directed.

Supply install commissioning and testing in replacement of Factory made (CPRI Approved) floor mounted Outdoor cubical type LT Feeder Pillar Box of size 1500 X 1300 X 500 MM fabricated out of 3.15 mm thick CRCA Sheet and angle iron 60 X 60 X 6 mm frame factory made totally enclosed dust and vermin proof both side hinge opening arrangement on front and back centre openable double door with locking arrangement cable entry and exit from bottom with cable glands and gaskets, Digital VAF + PF Meter- 01 Set (Make- L&T/ Schneider/ Legrand/ Siemens), including LED indicating lamps- 03 Nos (Make- L&T/ Schneider/ Legrand/ Siemens), internal wiring of suitable size to be used for incoming and outgoing connection of all switches/MCCB's & Bus-bar. The TPN bus bars shall be insulated with colour coded heat shrinkable sleeve and shall be mounted on DMC/epoxy insulator, connected with Aluminium lugs, including powder coat painting (RAL-7032) on the surfaces externally & internally including necessary preparation of surfaces and providing PCC (1 : 3 : 6) type C2 as in foundation all as specified and as directed, comprising of the following :- Note: 1. Internal Wiring with single core copper conductor cable/ PVC Insulated Strip of suitable size incoming busbar and busbar to out going MCCB/MCB - 1 Job. 2. Fine wiring ith single core copper conductor cable for instruments/indicating lamps - 1 Job. INCOMING (a) Bus bar chamber comprising 04 Nos tin plated copper strip bus bar mounted on DMC ( Dough Moulding Compound) insulator and PVC sheathed of capacity 400 Amps with colour coding for RYB & N - 01 Set (b) MCCB 250 Amp , 4 Pole , 415 Volts rating with, overload, short circuit fault protection 3 phase with neutral link specially fixed incoming supply (Breaking capacity 25KA)Ics=100% of Icu, with spreader terminal of both ends-01 No. (Make Legrand,Cat part No-4202 19 , or equivalent in L&T/Schneider/ Siemens) OUTGOING (c) MCCB 100 Amp , 4 Pole , 415 Volts rating with, overload, short circuit fault protection 3 phase with neutral link specially fixed out going supply (Breaking capacity 25KA)Ics=100% of Icu, with Spreader terminal of both side-01 No. (Make Legrand,Cat part No-4200 55 , or equivalent in L&T/Schneider/ Siemens) (d) MCCB 63 Amp, 4 Pole , 415 Volts rating with, overload, short circuit fault protection 3 phase with neutral link specially fixed out going supply (Breaking capacity 16KA)Ics=100% of Icu, with spreader terminal of both ends-04 Nos. (Make Legrand,Cat part No-4200 13 , or equivalent in L&T/Schneider/ Siemens) (Note-Fixing arrangement diagram and line diagram of the panel shall be got approved by accepting officer before panel fabrication).

Material and Labour for earthing complete with galvanized steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground ( earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level, connected to GI strip 32x6 as earthing lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical plate No 3 of SSR Pt I including necessary excavation and earth work PCC (1:3:6) type C-1 with 50 mm thick pre cast RCC ( 1:2:4) type B-1 cover slab (reinforced with 8 mm dia deformed bar @ 15 cm C/C both ways and suitable handle of 10 mm dia round bar) including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel and 20 mm bore galvanized iron watering pipe (medium grade) wire mesh, lugs, complete in all respect, GI earth strip protected by 40 mm bore (light grade) galvanized iron pipe and other end connected with main switch board or earthing test point as directed including proper lugs, including disposal of soil to a distance not exceeding 50 mtr and necessary testing on completion complete all as specified and as directed.

Damdoo Bhutia

M/S TSHERING BHUTIA

HIRA SINGH

BIMAL BHATTRAI

SANJAY KAUSHIK

Darjeeling Enterprises