SPL REPAIR/REPLACEMENT OF FOUR POLE STRUCTURE WITH RMU AT 39 FAD AT BHARATPUR MIL STN

Excavating in trenches, not exc 1.5 metre wide and not exc 1.5 metre in depth, for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. laying cables, pipes, etc. not exc 10 Sqm on plan & not exc 1.5m in depth and getting out in soft/loose soil complete all as specified and as directed.

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

Removing excavated soil/material to a distance not exc 50 metre and depositing where directed at a level not exc 1.50 metre above the starting point complete all as specified and as directed.

Supply, laying, jointing and testing HT XLPE (cross linked polyethylene) insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with aluminium stranded conductor 11000 Volt (Earthed) grade of cross sectional area 50 sqmm, 3 core laid in trenches/ducts, through pipe, under floors or roads/ along poles etc, complete all as specified & as directed. Notes:- (i) Sand cushioning, cable protection, GI protection pipe, jointing kits and excavation & earth work shall be measured & paid for separately. (ii) Road cutting/floor cutting /cutting holes etc in walls required for laying/fixing of cable etc shall be made good as per existing. Nothing extra shall be admissible on this account. Quoted rates shall be inclusive of the above provisions.

M&L for sand cushioning using unwashed dry river sand for underground cable 8 cm before laying cable and 15 cm after laying and punned to 18 cm after laying of under ground electric cable complete all as specified and as directed. Notes:- (i) Approved unwashed dry river sand free from vegetations, grass and other deleterious substances shall be used. (ii) For the purpose of payment, only punned thickness shall be measured.

M&L for sub class ‘B’ (old size) burnt clay bricks laid flat and dry abutting each other with gap between adjacent bricks not exc. 10mm for protection of underground electric cable in such a way that the length of brick is at right angle to the central axis of cable complete all as specified and as directed.

M&L for Boring of holes of 100mm bore under road, pavement, hard standing by suitable tools and necessary machine suitable for passing the GI protection pipe / cables, complete all as specified and as directed.

M&L for Galvanized iron tubing, 100mm bore light grade, ISI marked, including all fittings and laid in trenches/under road/drains, fixed to poles/walls with required size of flat iron (25mmx3mm) clamps, bolts, nuts and washers for protection of LT electric cable complete all as specified and directed. Note :- Excavation & earthwork shall be measured & paid for separately.

M&L for earthing to equipments with & including galvanised mild steel earth plate electrode of size 60 cm x 60 cm x 6 mm thick buried vertically in ground (earth pit not less than 2.25 m below normal ground level) with top edge of the earth plate at a depth not less than 1.5 m below ground level, the earth electrode surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides, connected to & including galvanized mild steel strip 32x6 mm as earth lead, including nuts, bolts, check nuts & washers of galvanized iron or steel and riveted/ welded to earth plate at one end and other end of strip connected to transformer / GOD / Panel / equipment body / test point with two Nos nuts bolts or welding with steel structure, GI earth strip encased in and including 40mm bore GI light grade pipe with all fittings from upper edges of earth plate upto 7.5 metre above ground level fixed with and including 25x3mm flat iron clamps, bolts, nuts and washer and also including providing watering pipe 20mm bore GI pipe medium grade from earth pit to top of electrode and including funnel, wire mesh, copper lugs etc complete with earth pit in PCC 1:3:6 type C1 using 20mm graded crushed stone aggregate and 40mm thick RCC (1:2:4 type B1) cover complete all as specified and shown in electrical plate No 3 of SSR Part-I including necessary excavation and earthwork in any type of soil, returning, filling in approved soil and disposal of surplus soil to a distance not exc 50m complete all as specified and as directed. Note : PCC chamber shall be constructed at least 1.5 mtr away from the earth electrode and pipe for watering shall be provided in slanting manner.

S&F of 11 KV Extensible Outdoor duty (IP 55 enclosure) SF6 gas insulated 4 way motor operated Ring Main Unit (RMU) comprising of 1 No 630 Amp Vacuum Circuit Breaker as incomer and 3 Nos, 630 Amps Vacuum Circuit Breaker as outgoing, cable termination from the front, breaking capacity 21 KA/3sec (Internal Arc Classification AFLR 21 kA-1sec with Bottom Exhaust both for tank and cable box as per IEC 62271-200), enclosed in robotically welded stainless steel tank having IP67 Degree of Protection, leak rate of SF6 gas less than 0.1% and tested as per IEC 60056/60694/60298. Protection CTs shall be ring core type, complete all as specified and directed. Line PT should be mounted only in the rear side (Top or Bottom) of the Panel. Make of RMU : Siemens (8DJH-ST)/ Scheider (FBX) / ABB (Safe Plus- XT).