AGE I CGN 35 25 26 REPAIR/MAINT OF HT EQUIPMENT, VCB TRANSFORMER AT DIFFERENT SECTORS UNDER AGE (I) CG NOIDA

M & L for Cable Jointing Kit for 11 kV (Earthed) grade cable outdoor termination, heat-shrink type, complete with jointing materials and accessories, suitable for 3-core XLPE armoured aluminium conductor cable of size 50 sq.mm to 95 sq.mm.

M & L for Cable Jointing Kit for 11 kV (Earthed) grade cable indoor termination, heat-shrink type, complete with jointing materials and accessories, suitable for 3-core XLPE armoured aluminium conductor cable of size 120 sq.mm to 185 sq.mm.

M & L for Cable Jointing Kit for 11 kV (Earthed) grade cable outdoor termination, heat-shrink type, complete with jointing materials and accessories, suitable for 3-core XLPE armoured aluminium conductor cable of size 120 sq.mm to 185 sq.mm.

M & L for Cable Jointing Kit for 11 kV (Earthed) grade cable straight-through, heat-shrink type, complete with jointing materials and accessories, suitable for 3-core XLPE armoured aluminium conductor cable of size 50 sq.mm to 95 sq.mm.

M & L for Cable Jointing Kit for 11 kV (Earthed) grade cable straight-through, heat-shrink type, complete with jointing materials and accessories, suitable for 3-core XLPE armoured aluminium conductor cable of size 120 sq.mm to 185 sq.mm.

M & L for Cable Jointing Kit for 11 kV (Earthed) grade cable indoor termination, heat-shrink type, complete with jointing materials and accessories, suitable for 3-core XLPE armoured aluminium conductor cable of size 50 sq.mm to 95 sq.mm.

Taking out the Vacuum Circuit Breaker (VCB) by carefully disconnecting the electrical connections from the junction box and panel. Overhauling the spring charging mechanism, checking the vacuum gap, greasing and adjusting the moving parts as required. Cleaning all parts using CTC solution and/or emery paper as necessary, greasing all metallic and mechanical parts, refixing, and making the VCB fully functional/operational — complete as directed. Note: Spares required for replacement shall be measured and paid for separately under the relevant items of the schedule.

Supply, laying, testing, and connecting in replacement of XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy-duty electric power cable with aluminium conductor, 11 kV grade, 3-core, having cross-sectional area of 95 sq.mm.

All as per item No 8 here-in-before but size of cable 150 sqmm 3 core

Excavation in trenches in soft soil not exceeding 1.5 m in width and not exceeding 1.5 m in depth for laying of cables, and getting out the excavated material, complete all as specified and as directed by the Engineer-in-Charge.

Returning, filling in, including spreading, levelling, watering, and well ramming in layers not exceeding 25 cm thick, using hard/dense soil, complete all as specified and as directed by the Engineer-in-Charge.

Supply and spreading of fine sand in trenches for cushioning of cables, 8 cm thick below the cable and 15 cm thick above the cable, complete all as specified and as directed by the Engineer-in-Charge.

Removal of surplus soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point, complete all as specified and as directed by the Engineer-in-Charge.

M & L for reinforced precast concrete cable covers, class HV, type 1, flat, size 300 mm × 180 mm × 40 mm, complete all as specified and as directed by the Engineer-in-Charge.

M & L for dehydration, including filtration and cleaning of transformer oil at site using a dehydration machine, until achieving a dielectric strength of 60 kV at 2.5 mm gap. The work shall include testing of oil samples before and after dehydration and filtration, complete all as specified and as directed by the Engineer-in-Charge. Note: (i) The contractor shall arrange the dehydration machine and testing kit at no extra cost. (ii) The testing report shall be submitted to the department.

Supply and filling of transformer oil, low-viscosity type, conforming to IS:335 (latest revision), for topping up of transformers (having dielectric strength of 60 kV at 2.5 mm gap), complete all as specified and as directed by the Engineer-in-Charge. Note: Testing of transformer oil shall be carried out before filling.

M & L for isolating indoor/outdoor transformer of 2-pole structure or plinth/platform-mounted type, after disconnecting HT/LT cable terminal connections and reconnecting the same after carrying out necessary repair/maintenance work of the following capacity, complete all as specified and as directed by the Engineer-in-Charge. Note: Spares required for replacement shall be measured and paid for separately under the relevant items of Schedule ‘A’.

Supplying and laying synthetic rubber insulated mats, 2.5 mm thick, suitable for voltage up to 11 kV, for electrical purposes as per IS 15652:2006 (superseding IS 5424), suitable for electrical shock protection, size 2 m × 1 m, complete all as specified and as directed by the Engineer-in-Charge.

Supply only standard compact power pack unit for HT 11 kV VCB, having input voltage 110/220 V AC and output voltage 24 V DC, provided with power-on indicator and fuses on both input and output sides, complete all as specified and as directed by the Engineer-in-Charge.

Supply only closing coil for existing 11 kV VCB, 24 V DC, including necessary connections, complete all as specified and as directed by the Engineer-in-Charge.

Supply only tripping coil for existing 11 kV VCB, 24 V DC, including necessary connections, complete all as specified and as directed by the Engineer-in-Charge.

Supply only tinned copper fuse wire, supplied in 200/250 gm rolls, complete all as specified and as directed by the Engineer-in-Charge.

M & L for disconnecting HT supply from RMU carefully, including electrical connections. Overhauling the spring charging mechanism, dismantling unserviceable CTs and replacing the same, checking the vacuum gap, greasing and adjusting moving parts as required. Cleaning all parts with CTC solution and/or emery paper as necessary, greasing metallic and mechanical parts, refixing, and making the VCB fully functional/operational, complete all as specified and as directed by the Engineer-in-Charge.

Supply only CT for RMU, conforming to IEC 61869-2 and IS 2705:1992, having ratio 100-50/1 A, frequency 50 Hz, STC 21 kA for 3.0 seconds, complete all as specified and as directed by the Engineer-in-Charge.

S & F in replacement of silica gel for transformers of capacity 63 kVA to 500 kVA, complete all as specified and as directed by the Engineer-in-Charge.

M & L in replacement of temperature gauge of range 0–100°C, complete all as specified and as directed by the Engineer-in-Charge.

Supply and fix in replacement of drop-out fuses, 11 kV, 100 A capacity, including nuts, bolts, and washers, barrel type expulsion fuse units (set of three), including mounting on channel, complete all as specified and as directed by the Engineer-in-Charge.

Supply only, in replacement, porcelain insulating bush with gasket for LT side of transformer, HT 11 kV, suitable for indoor/outdoor type, for transformers up to 500 kVA capacity, complete all as specified and as directed by the Engineer-in-Charge.

S & F in replacement of silica gel breather assembly, having iron caps at top and bottom, tightened with suitable size nuts and bolts, filled with silica gel, suitable for transformers of capacity 63 kVA to 500 kVA, complete all as specified and as directed by the Engineer-in-Charge.

Supply only, in replacement, transformer bush rods made of brass, as per existing diameter/size for HT/LT side, including set of brass washers, nuts, and bolts, suitable for indoor/outdoor type transformers of the following capacities, complete all as specified and as directed by the Engineer-in-Charge.

Supply only, in replacement, porcelain insulating bushing with gasket for HT side of transformer, 11 kV, suitable for indoor/outdoor type, for transformers up to 500 kVA capacity, complete all as specified and as directed by the Engineer-in-Charge.

Supply and spread crushed stone aggregate (sharp-edged and angular) of size not exceeding 40 mm, laid in a 150 mm thick layer over a well-prepared sand bed, complete all as specified and as directed by the Engineer-in-Charge.

Supply and install in replacement, commission, and test air break switch, gang-operated, off-load, outdoor type, mechanically operated from ground level, mounted on 11 kV post insulators, complete with MS channel base, MS nuts and bolts for fixing to poles, of 200 A capacity, 3-phase with three insulators per phase, and provided with locking arrangement in ON and OFF positions. The work includes making all necessary electrical connections, fixing the assembly to the pole structure in position, and painting all steel surfaces with two coats of aluminium paint over a coat of red oxide primer, complete all as specified and as directed by the Engineer-in-Charge.

M & L for replacement of gunmetal gate valve with cast iron wheel head, 25 mm bore, heavy duty, ISI marked, including providing necessary rubber packing to prevent leakage, complete all as specified and as directed by the Engineer-in-Charge.

M & L in replacement of surge or lightning arrester, metal oxide type, suitable for HT distribution line, nominal discharge current 10 kA, high current impulse withstand 100 kA (10 ms impulse), Class-I, conforming to IS 3070 and IEC 60099-4, including all fixing arrangements on HT pole, complete all as specified and as directed by the Engineer-in-Charge

M & L for servicing of two-pole structure complete, including replacement of unserviceable jumpers, sleeves, vice-type connectors, bolts, nuts, washers, insulators (if required), DO “V” contact, DO “L” contact, connecting lugs/thimbles; greasing all moving parts; applying petroleum jelly on moving and fixed contacts; tightening all connections; and preparing the old painted surfaces of the structure such as cross arms, bracings, supports, clamps, and back plates. The work also includes painting two coats of anti-corrosive aluminium paint over one coat of red oxide zinc chromate primer, and painting the pole with waterproof paint, providing yellow and black bands from ground level, complete all as specified and as directed by the Engineer-in-Charge.

M & L for servicing of four-pole structure complete, including replacement of unserviceable jumpers, sleeves, vice-type connectors, bolts, nuts, washers, insulators (if required), DO “V” contact, DO “L” contact, connecting lugs/thimbles; greasing all moving parts; applying petroleum jelly on moving and fixed contacts; tightening all connections; and preparing the old painted surfaces of the structure such as poles, cross arms, bracings, supports, clamps, and back plates. The work also includes painting two coats of anti-corrosive aluminium paint over one coat of red oxide zinc chromate primer, and painting the pole with waterproof paint, providing yellow and black bands from ground level, complete all as specified and as directed by the Engineer-in-Charge.

M & L for defect rectification in HT 11 kV cable laid in trenches by locating the fault using an electronic fault locator machine comprising surge generator, pulse echo fault locator, and high-frequency distance calculator, etc. The work includes excavation in any type of soil strata to expose the faulty portion of the cable, removal of the deteriorated portion, treatment of the cable, and keeping it ready for jointing work for 3-core cables of size up to 300 sqmm. The fault locating equipment shall be brought to the site within 2 hours of instruction received from the Engineer-in-Charge, complete all as specified and as directed by the Engineer-in-Charge.

M & L for pin-type porcelain insulator, vitreous, white, brown, or green in colour, including one galvanized mild steel spindle, two galvanized iron washers, and one galvanized iron nut, of size 150 mm height and 150 mm diameter, suitable for 11,000 volts grade, complete all as specified and as directed by the Engineer-in-Charge.

M & L for danger notice plate made of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures, and conventional skull and bones symbol in signal red colour, fixed with mild steel clamps, bolts, and nuts of approved size, suitable for HT installation, of size 25 × 20 cm, complete all as specified and as directed by the Engineer-in-Charge.

S & F in replacement of cross arms, bracings, supports, clamps, etc., made out of mild steel channel or angle sections of required size and shape, including clamps, back plates with bolts, nuts, and washers, drilled for insulator bolts, and including welding and cold or hot bending to any required shape or size. The work also includes all fixing arrangements on HT overhead lines and painting with two coats of synthetic enamel paint over one coat of red oxide primer, complete all as specified and as directed by the Engineer-in-Charge.

M & L in replacement of anti-climbing device, spike type, fabricated from MS bars (8 mm diameter, 10 Nos, each 20 cm long), fixed by drilling/welding on two MS flats 40 × 6 mm, shaped to suit the cross-section of the pole and fixed at about 2.0 m height from ground level. The work includes complete painting with two coats of aluminium paint over one coat of red oxide primer, complete all as specified and as directed by the Engineer-in-Charge.

M & L for preparation of old painted iron surfaces of transformer up to 400 KVA by scraping off old paint, cleaning, and applying two coats of automotive paint by spray painting, including denting and filling with putty, complete all as specified and as directed by the Engineer-in-Charge.

M & L for provision of earthing with galvanised steel earth plate electrode 600 x 600 x 6.0 mm, buried vertically in ground (earth pit not less than 2.25 metres deep below normal ground level), with the top edge of the plate at a depth of not less than 1.5 metres below ground level, connected to and including galvanised iron strip 32 x 6 mm as earthing lead by means of galvanised bolts, nuts, check nuts and washers, and protected by 40 mm dia medium grade galvanised iron pipe up to 7.5 metres from the electrode, complete with connection to the voltage stabilizer. The earthing arrangement shall include charcoal dust and salt packed around the earth plate as per Electrical Plate No. 3 of SSR Part I (2009), PCC chamber in cement concrete (1:2:4) type B-1 with M.S. angle iron frame, cast iron cover with locking arrangement, and 20 mm dia light grade G.I. watering pipe with funnel and wire mesh. Work includes excavation and earthwork in any type of soil, testing on completion, complete all as specified and as directed by the Engineer-in-Charge. Note: GI strip and protection pipe up to and including 7.5 m length shall be deemed to be included in the unit rate quoted by the contractor.