SPECIAL REPAIR TO CONVERSION OF OH LINES TO UG LINES AT AF STN KUMBHIRGRAM

Amount

Excavating in trenches n exc 1.5m wide and n exc 1.5m deep and getting out in soft / loose soil complete all as specified and directed.

Returning, filling in soft/loose soil, including, spreading, levelling, watering and well ramming in layers not exc. 25 cm thick complete all as specified and directed.

Removing excavated materials (soils) to a distance not exc 50.00 mtr and depositing where directed at a level not exc 1.50 mtr above the starting point , complete all as specified and as directed.

Supply and spreading dry sand of approved quality for cushioning of UG cable laid in trenches complete all as specified and directed. (NOTE : For the purpose of Payment, Punned thickness of Sand Cushioning only shall be Measured and Paid for).

Supply and laying old size sub class 'B' bricks well burnt, best quality locally available, of size 230x115x75mm, laid flat with width equal to length of the brick in trenches over sand cushioning for UG cable protection complete all as specified and directed

M&L for horizontal boring across the existing road without disturbing the road surface for inserting 50/80 mm bore GI pipe, complete all as directed. Note: GI pipe shall be measured and paid for separately under respective item.

S&F 50 mm bore GI tubing light grade ISI marked for protection of cable including necessary joints complete all as specified and as directed. Make: Jindal/Bansal/Prakash/Swastik/Zenith

S&F 80 mm bore GI tubing light grade ISI marked for protection of cable including necessary joints complete all as specified and as directed. Make: Jindal/Bansal/Prakash/Swastik/Zenith

Supply, laying, jointing and testing of XLPE insulated, PVC bedded, Galvanized steel strip or wire armoured underground heavy duty electric power cable with standard aluminium conductor 1100 volts grade cross sectional area 300 Sqmm 3.5 core, laid in trenches/ duct/ on pole including all necessary fixing arrangement such as lugs, glands end termination etc complete all as specified and as directed. (Note :- Excavation, earth work, bricks & sand cushioning shall be measured & paid separately)

All as per item No 09 here-in before but cross sectional area 240 sqmm 3.50 core complete all as specified and as directed.

All as per item No 09 here-in before but cross sectional area 185 sqmm 3.50 core complete all as specified and as directed.

All as per item No 09 here-in before but cross sectional area 35 sqmm 3.50 core complete all as specified and as directed.

All as per item No 09 here-in before but cross sectional area 25 sqmm 4 core complete all as specified and as directed.

All as per item No 09 here-in before but cross sectional area 10 sqmm 4 core complete all as specified and as directed.

Supply, instal, testing and commissioning outdoor type LT feeder pillar box of 1.2 x 1.0 x 0.6 Mtr size, padestal mounted, CPRI certified factory made totally enclosed, dust and vermin proof, double leaf shutter in front and single leaf shutter in rear side made of 3.15 mm thick CRCA sheet, framing with 50 x 50 x 6 mm thick MS angle iron and legs of size 0.5m long duly fabricated and having proper locking arrangement in both front and rear door with 4 side slanting roof duly projected and painted to both internal and External surfaces with powder coating paint in heat process of sheet and suitable for 500 volts, 50 Hz, 3 phase 4 wire system and comprising with and including following accessories and mounted on PCC Plat form made out of PCC 1:3:6, 100 mm thick, 1 Mtr all round the panel board complete with the following items housed in : Busbar :- 200 Amps rated copper bus bar TPN duly insulated with coloured PVC sleeve as per standard colour code and rigidly mounted on bakelite/DMC insulator bus bar support (Square/round ) insulators of suitable size and good insulation resistance Incoming:- (i) TPN MCCB of capacity 250 Amps, 415 Volts, 50 Hz, 3 phase breaking capacity 25 KA -01 No Outgoing:- (a) MCCB 4 pole of capacity 63 Amp breaking capacity 25 KA with thermal release, 415 volts 50 C/S-02 Nos (3 MCCB can be mounted in one cubicle)

Supply, fix and testing of heat shrink LT cable straight through jointing kit suitable for 1100 volts grade 300 Sqmm to 400 Sqmm 3.5 core, complete all as specified and as directed. MAKE: RAYCHEM/3M/DENSONS

Supply, fix and testing of heat shrink LT cable straight through jointing kit suitable for 1100 volts grade 185 Sqmm to 240 Sqmm, 3.5 core, complete all as specified and as directed. MAKE: RAYCHEM/3M/DENSONS

Supply, fix and testing of heat shrink LT cable straight through joint kit suiutable for 1100 volts grade for size 25 Sqmm to 50 Sqmm 3.5/4.0 core cable complete all as per specified and directed. MAKE: RAYCHEM/3M/DENSONS

Supply & fix in repair MCCB, Four pole, AC 415 volts, 160 Amps, 25 KA capacity and making connections incl dismantling of existing MCCB complete all as specified & directed.

Dismantling of ACSR conductor from existing position on electric poles including line separators/gaurd wires/service feeders complete all as specified and directed.

Dismantling and taking down unserviceable MS cross arms bracings and supports, clamps, nut, bolts on existing poles complete all as directed.

Dismantling and taking down insulators any size/type/capacity at any position complete all as specified & directed.

Earthing complete with GI earth plate electrode of size 60 cm x 60 cm x 6 mm thick buried directly in ground vertically at a depth not less than 2.25 m below normal ground level with top edge of earth plate at a depth not less than 1.5 m below normal ground level, surrounded from all sides by 15 cm thick packed layer of charcoal dust and common salt filled in alternate layers etc and connected to and including 32 X 6mm GI earth strip upto 7.5 m by means of bolts, nuts, check nuts and washers made of GI and protected by light grade 40 mm bore GI pipe connected to main control board and GI pipe medium grade 20 mm bore for watering and including funnel, wire mesh, and providing RCC pit cover flush to earth pit 50 mm thick type B-1 reinforced with 8 mm dia TMT bar 100 mm C/C and PCC chamber pit with PCC (1:3:6) type C1 (using 20 mm graded aggregate) including excavation and earthwork, disposal of surplus soil to a distance not exceeding 50 m and testing after completion all as specified and shown on electrical plate No 3 of SSR Part-I 2009

Niranjan Roy