CWE/KAS-14/2024-25 REPAIR/MAINT OF HT ELECTRIC INSTALLATION, TRANSFORMERS, VCBS and OTHER CONNECTED ITEMS AT DAGSHAI UNDER GE KASAULI

Amount

Dismantling and taking down of concrete of any description and in any position complete all as specified and as directed by Engineer-in-charge.

Dismantiling and taking down old unserviceable ACSR conductor any size complete all as specified and as directed by Engineer-in-charge.

Dismantiling and taking down old/ rusted cross arms of MS channel or angle sections etc complete all as specified and as directed by Engineer-in-charge.

Dismantling and taking down of stay assembly complete, (demolition of concrete etc and excavation shall be measured separately) complete all as specified and as directed by Engineer-in-charge.

Dismantling and taking down of insulators of any type any size from its own position from existing pole structures, over head lines complete all as specified and as directed by Engineer-in-charge.

Dismantling and taking down of old steel poles/ struts of any size complete all as specified and as directed by Engineer-in-charge.

Taking down of existing unserviceable HDPE pipe of size 110 mm from existing locations complete all as specified and as directed by Engineer-in-charge.

Excavation in trenches not exceeding 1.5 meter wide and not exceeding 1.5 meter in deep getting out in hard/ dense soil for stay assembly/ laying of cable/ erection of poles etc complete all as specified and as directed by Engineer-in-charge.

All as per item No. 8 as above here-in-before for depth exceeding above 1.5 meter but not exceeding 3.0 meter depth complete all as specified and as directed by Engineer-in-charge.

Returning, filling in including spreading, levelling, watering and well ramming in layers n.exc 25cm thick complete all as specified and as directed by Engineer-in-charge.

Removing of excavated material n.exc 50m and depositing where directed at a level n.exc 1.5m above the starting point complete all as specified and as directed by Engineer-in-charge.

Dismantling taking out carefully old/ unserviceable UG HT cable of any type/ size from trenches/ pole /duct after disconnecting from VCBs/ two pole structures complete all as specified and as directed by Engineer-in-charge.

M&L for passing through pipe testing and commissioning of 11000 Volts grade 'Heavy duty' PVC sheathed, armoured cable, HT, XLPE insulated, aluminium conductor multi stranded served with inner sheathing of PVC tape armoured with galvanised steel wire or tape and overall PVC sheathed of size 95 Sqmm nominal cross sectional area, 3 core with suitable glands and lugs as per site requirement confirming to IS specifications, complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of HT, OH lines of aluminium conductor by 11KV Aerial Bunched (AB Cable) PVC, XLPE and multistranded of aluminium conductor material with 4 core (i.e 95 Sqmm x 3core + 70 Sqmm x 1core) including all the accessories such as hanging 'J' clamp, end extension/ support clamp etc, complete all as specified and as directed by Engineer-in-charge.

M & L Cutting the existing bituminous road / cement concrete surface 150 mm thick to the required width and depth for laying of cable protection pipe and making good the disturbed area to match with existing/ PCC complete all as specified.

M&L for replacement of double walled corrugated HDPE duct pipe of 110 mm outer dia confirming to IS-14930 (Part-II) of approved colour with fittings for cable protection complete all as specified and as directed by Engineer-in-charge.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm including dismantling / taking down unserviceable one complete all as specified and as directed by Engineer-in-charge.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm including dismantling / taking down unserviceable one complete all as specified and as directed by Engineer-in-charge.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm including dismantling / taking down unserviceable one complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of cross arms including bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one coat of primer and over one coat of synthetic enamel paint complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of ACSR conductor including jointing with existing conductor and stringing on pole and proper fastening to insulators with aluminium binding wires and required jumpering connection complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of old/ defective disc type insulator porcelain, vitreous 145 mm high and 255 mm dia ball and socket type white, brown or green, double disc with tension clamp for conductor for working pressure voltage 11000 Volts grade from existing pole complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacemnt of old/ defective pin type, porcelain, vitreous, brown, including one galvanised mild steel spindle, two galvanised iron washer and one galvanised iron nut, 150 mm dia and 150 mm height for 11000 volts grade from existing pole complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacemnt of old/ defective loop type insulator, porcelain vitreous white, brown or green of size 90 x 140 mm and clearence hole 25.5 mm complete all as specified and as directed by Engineer-in-charge.

Providing of labour for trimming off branches of trees touching HT electric over head lines by climbing up tree or using ladder at a height upto 9.5 mtr from ground level and making clear about 3 mtr in radius and carrying and depositing where directed not exceeding 50 mtr complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of old/ rusted anti-climbing device, spikes type fabricated out of M.S. bars (round, square and flat not less than 225 mm length of each spike) including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole including taking down of old/ rusted one complete all as specified and as directed by Engineer-in-charge.

M&L for erection of steel tubular poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-55 (11.0 meter long) including painting of pole two coats of red oxide and over a one coat synthetic enamel paint (as per existing) with writing of MES pole numbering complete all as specified and directed. Note :- Earth work and foundation of PCC shall be measured and paid separately in relevant items of schedule.

M&L for painting of HT steel tubular pole including cross arm/ bracing/ clamps complete with one coat of aluminum paint including cross arm, bracings, supports, nuts, bolts, and including making alternative black and white strips on pole with synthetic enamel paint (each strip 30 cm height) up to 1.5 mtr height from top of PCC foundation block and writing pole Nos and including applying one coat of cement base paint on exposed surface of PCC coping and foundation block complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of old/ broken mild steel galvanised stay assembly set complete comprising of 14 mm dia, 400 mm long stay bow, 2150 mm long stay rod, 20mm dia, 300mm x 300mm x 6mm stay plate, thimble, all as shown in electrical plate No.1 of MES Schedule part-I 2009 complete all as specified and as directed by Engineer-in-charge. Note :- PCC, earth work and Insulators etc shall be measured and paid separately.

M&L for PCC 1:4:8, type D-2, using 40mm graded stone aggregate as in foundation and mass concrete/ filling, complete all as specified and as directed by Engineer-in-charge.

M & L for Cement concrete 1:3:6, type C-2, using 40mm graded stone aggregate in foundations, filling and mass concrete complete all as specified and as directed by Engineer-in-charge.

M&L for PCC 1:2:4, type B-1, using 20mm graded stone aggregate as in coping and the like including weathering slightly rounded/ chamfered angles with & incuding necessary use and waste of form work for fair faces of concrete, complete all as specified and as directed by Engineer-in-charge.

Material & labour for chain link fencing, MS galvanised, including line wires, any mesh, size and type to any type of standards, rails, straining bolts, etc. any size or type with weight not less than 2kg per square metre, including provision of binding wire complete all as specified and as directed by Engineer-in-charge.

Supply and fixing of barbed wire, galvanised, 2 strand, 2.0 mm dia barbed at 75mm spacing, complete all as specified and as directed by Engineer-in-charge.

Material and labour for Un-binding of wire from insulators, re-stretching and tightening of existing ACSR conductor of any size on HT poles including binding the ACSR conductor with new insulators with aluminium binding wire 2 mm dia complete all as specified and as directed by Engineer-in-charge.

All as per srl item No. 35 here-in-before but re-stretching only existing GI earth wire 4 mm dia on HT poles & including binding with 1.63 mm dia GI binding wire complete all as specified and as directed by Engineer-in-charge.

Lifting up carefully transformer core after dismantling carefully terminal connections from core to HT/ LT bushings, tap changer assembly, drainout all oil and keeping in clean container, dismantling all HT & LT coils from core for rewinding, and reassembling complete with HT/LT coils to core, required necessary numax paper insulation, insulating press board, pre-compressed board size of 6mm/ 3mm/ 1.5mm/ 1mm, varnishing, heating to achieve insulation level not less than 1000 mega ohms at both HT & LT side, core at transformer chamber, tap changer assembly, terminal connection, top cover with new cork sheet gasket, required existing/ new nuts, bolts & washers, filling transformer oil, testing after repair complete all as specified and directed for the 250 KVA, 11/ 0.415 KV transformer.

Note :- Opening of top cover, re-winding of HT/ LT coils, transformer oil, nuts, bolts & washers, HT/ LT bushings, required new will be measured separately under appropriate items of schedule.

Rewinding of LT coils suitable for 1100 volts grade with new DPC/ super enamelled copper strip having Class-F insulation as per existing size and turns for capacity of transformer 63-250 KVA complete all as specified and as directed by Engineer-in-charge.

Rewinding of HT coils suitable for 11000 volts grade with new DPC/ super enamelled copper wire having Class-F insulation as per existing size and turns for capacity of transformer 63-250 KVA complete all as specified and as directed by Engineer-in-charge.

Opening of top cover in situ or at wksp for transformer capacity from 63 kVA to 250 kVA, 11/0.433 kV grade by unscrewing all nuts, bolts & washers, draining out transformer oil upto required level and keeping in clean container for replacement of HT/ LT bushings, for lifting of core assembly, for cleaning/ repair and refixing complete with new cork sheet gasket, existing /new nuts, bolts & washers for transformer indoor/ outdoor type, refilling of oil all as specified and directed.

Note :- HT/ LT bushings, studs, Nut-bolts including washers required shall be measured and paid separately under relevant items of this schedule.

Material and labour for replacement of transformer LT porcelain bushing indoor/ outdoor type as per existing in situ/ workshop suitable for 1100 volts grade complete with rubber bush, washers, nuts, check-nuts and cork sheet gasket for the rating of 63-100 kVA, 11/0.433 kV transformer complete all as specified and as directed by Engineer-in-charge.

All as per item No. 41 here-in-before but for transformer capacity 100-200 kVA complete all as specified.

All as per item No. 41 here-in-before but for transformer capacity 200-250 kVA complete all as specified and directed.

Material and labour for replacement of brass stud suitable as per existing for LT 1100 volts grade with cork & rubber washer, double Brass nuts & brass washer at both end of stud for Transformer capacity 63-100 KVA complete all as specified and as directed by Engineer-in-charge.

All as per item No. 44 here-in-before but for transformer capacity 100-200 KVA.

All as per item No. 44 here-in-before but for transformer capacity 200-300 KVA,

Material and labour for replacement of old/ bend / unthreaded mild steel screw bolts (machine made) with hexagonal head at one end and screwed the other with washer and one hexagonal nut n. exc 5 cm long and 5 to 10 mm dia of neck includng taking down old one complete all as specified and as directed by Engineer-in-charge.

Material and labour for Air break switch, gang operated, triple pole, mechanically operated mounted on HT insulators (12 insulators pin type) and MS galvanised steel frame with operating mechanism operated from ground level with fixed contacts of phosphorous bronze and moving contacts of copper including operating rod for current rating upto 200 Amps, 11000 volts complete with locking arrangement, including 3 Nos drop out explusion type of fuses with fuse barrels of required capacity to suit load at site, also including provision of two coats of aluminium paint over a coat of red oxide primer on MS work complete all as specified and as directed by Engineer-in-charge.

Material and labour for lightening arrestor, gapless metal oxide type, distribution class, system voltage of 11kV, min rating 10kV, discharge cap 10 kA, Line discharge class-1 complete with bracket and connection complete all as specified and as directed by Engineer-in-charge.

Material and labour for expulsion type drop out fuse, single pole, 11000 Volts, 25 Amps complete with insulator 150mm dia and 150 mm height including dismantling /taking down old unserviceable one complete all as specified and as directed by Engineer-in-charge.

Deployment of manpower/ tools/ machinery/ plant for Dehydration/ filtration of transformer oil of voltage grade 11/ 0.433 KV of transformers, of various capacities installed at different locations by disconnecting plants electrically for recirculation existing transformer oil with trolley mounted filtration plant till dielectric strength achieves to min 50 kV when measured at 4mm gap complete all as specified and as directed by Engineer-in-charge.

Note:- (a) Filtration/ dehydration of transformer oil shall be carried out at the location where transformer is installed with trolley mounted filtration plant and necessary filter/ dehydration plant having pressure gauge, hour meter, temperature gauge to be brought at site by the contractor including electric supply arrangement to run the dehydration equipment and rate deemed to be included in the quoted rate.

M&L for topping up/ replacement of transformer oil with new transformer oil suitable for working voltage 11000 volts grade including necessary dehydration to achieve dielectric strength min 50 KV at 4mm gap complete all as specified and as directed by Engineer-in-charge. Note :- New transformer oil to be brought in company sealed ISI marked container with test certificate.

M&L for setting of 3 phase over current + earth fault relays by secondary injection of current with suitable equipment for over current & earth fault with high set and low set including necessary checking of trip circuit, relay circuit, closing circuit, alarm circuit, DC supply circuit, AC supply circuit and repair of same as required for 11 kV VCB after disconection of incoming and out going HT XLPE cable connection and reconnection of cable ends at existing terminals after completion of relay setting complete all as specified and as directed by Engineer-in-charge.

Supply and fixing of danger notice plate of 1.6 mm thick, mild steel sheet vitreous enameled white with letter figures and conventional skull and bones in signal red colour and fix with MS clamp for HT size 25 X 20 Cm and taking out of old/ rusted one complete all as specified and as directed by Engineer-in-charge.

Supply and install synthetic rubber insulated mats 2.5 mm thick for voltage upto 11kV for electrical purpose as per IS 15652-2006, suitable for electrical shock & safety of sizes 2m x 1m and taking out of old mat complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of transformer temperature gauge, dial type having temp range 0 to minimum 120 degree celsius complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of old silica gel grains in the breather assembly of transformer complete all as specified and directed.

Material and labour for replacement of spring charging motor as per existing, AC 230 volts as per existing and taking down of old/ unserviceable one complete all as specified and as directed by Engineer-in-charge.

Taking out manually defective transformer of capacity capacity from 63 kVA to 250 kVA from its own position upto road n.exc 1 KM and transportation by vehicle to workshop n.exc 50 KM and reinstallation at original position after repair or shifting of transformer from present location to original location complete all as specified and as directed by Engineer-in-charge. Note :- (a) Quoted Rate deemed to be included for necessary disconnection and refixing the HT/ LT cables/ ACSR and earthing connection after re-installation of transformer.

Material and labour for replacement of transformer porcelain bushing outdoor/ indoor type as per existing in situ/ wksp suitable for 11 kV grade complete with brass stud, rubber bush, washers, nuts, check-nuts and cork sheet gasket for the rating of 63 kVA to 250 kVA, 11/ 0.433 kV transformer complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of 3 phase digital type Amp meter 0-120 Amp class 0.5 of size 96 mm x 96 mm to match the ratio of existing CT's and taking down of unserviceable one complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of 3 phase digital type Volt Meter 0-12 KV class 0.5 of size 96mm x 96 mm to match the ratio of existing CT's including taking down of unserviceable one complete all as specified and as directed by Engineer-in-charge.

Note :- (i) Result sheet to be prepared and submitted to the Deptt for record purpose i.e calibration of all metering devices, tripping system etc. (ii) In case any defective/ unserviceable items to be found during the servicing of VCB, the same will be measured and paid separately under relevant items of this schedule.

Disconnecting and taking out worn out jumpers of HT over head line/ Sub-station any size, any length after removing binding wire/ sub station connector of AB switch/ DO fuse unit and replacement with new ACSR weasel conductor jumpers including PVC sleeve in colour coding R/ Y/ B of same size and length including new binding wire/ sub station connectors suitable for AB switch/ DO fuse unit, with conducting jelly complete all as specified and as directed by Engineer-in-charge.

Material and labour for replacement of LED indicator lamp (Neon type) for panel indicator complete with lamp blue/ white as per site requirement complete all as specified and as directed by Engineer-in-charge.

Maintenance/ overhauling and calibration of HT VCB 400/ 630/ 800 Amp capacity suitable for 11 KV by disconnecting and opening the complete assembly checking and overhauling mechanism, tripping system, cleaning and lubricating of all moving parts (replace closing buffer check vacuum intrapter) and carrying out primary and secondary injection test for proper functioning checking of protection device, replacement the unserviceable meter, reconnecting & testing on full load complete all as specified and as directed by Engineer-in-charge. Note :- meters, if found unserviceable will be measured & paid separately under relevent item of this shedule.

S&F in replacement of multistranded copper conductor control cable of size 16 Sqmm, 12 Core and taking down of unserviceable one complete all as specified and as directed by Engineer-in-charge.

S&F in replacement of breather assembly made with polycarbonate base and clear acrylic glass of size min 50mm dia, min 120 mm long of suitable size as per site requirement for transformer complete all as specified and as directed by Engineer-in-charge.

S&F in replacement of non drawout over current protection relay (3 OC + 1 EF & INST. Protection) with micro processor based complete all as specified and as directed by Engineer-in-charge. Note :- Relay should be suitable as per existing type / Make for 11 KV VCB's/ Control Panel at site.

S&F in replacement of VCB trolley mechanism for auto tripping and ON/ OFF mechanism as per existing sample including taking down of unserviceable one complete all as specified and as directed by Engineer-in-charge.

M & L for cleaning, scraping out old rubbed paint/ rust & painting of transformer complete of capacity outdoor/ Indoor type with one coat of synthetic enamelled gray paint (first grade) by spray painting machine on transformer & writing SM NO on surface of transformers of capacity 63 kVA to 250 kVA complete all as specified and as directed by Engineer-in-charge.

Providing of labour for cleaning of 2 pole/ 4 pole structure/ switch yard and cutting of grass/ bushes/ tree branches and throw out the debris from existing location and deposting the same not exc 50m distance and carring out the proper layout of incoming/ outgoing cables and proper maintaining of Panel doors complete all as specified and as directed by Engineer-in-charge.

M&L for stone aggregate of nominal size 40mm graded, for laying under outdoor switch yard 2 pole/ 4 pole structure boundary complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in replacement of lead acid battery of cap 12 Volt 80 Ah, maintenance free battery along with battery charger similar to existing sample complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in replacement of fluoresent retro-reflective sheet of size not less than 50mm width high grade quality of yellow/ Red colour fixed on pole after cleaning and removing paint of existing surface complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in replacement of vaccum interputer suitable for 11 kV VCB as per existing complete all as specified and as directed by Engineer-in-charge.

Supply & Fixing in replacement of LED indicator lamp (Neon type) for HT Panels complete with lamp Red/ Yellow/ green/ amber as per site requirement complete all as specified and as directed by Engineer-in-charge.

Material & Labour for earthing complete with galvanised steel earth electrode plate of size 600 x 600 x 6 mm thick, buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.50m below normal ground level, connected to galvanised iron earth strip 32 x 6mm upto test point with suitable GI nuts/ bolts and brazed properly up to main board including earth pit in cement concrete 1:2:4 type B-1, precast RCC cover in 1:2:4 reinforced with expanded metal, with suitable handle, excavation and earth work in any type of soil and including medium grade GI watering pipe 20mm bore with funnel wire mesh and light grade GI strip protection pipe 40 mm bore up to main board complete as shown in electrical plate No. 3 of MES schedule Part-I 2009, connected to earthing testing point including taking out existing unserviceable earthing including testing on completion complete all as specified and as directed by Engineer-in-charge.

Note - (i) The quoted rate shall be deemed to include the cost of excavation & earth work in any type of soil, charcoal & salt in alternate layers, 20mm GI pipe (medium grade) for watering 40mm GI protection pipe (light grade) funnel wire mesh PCC chamber in PCC 1:3:6 type C-1 cast iron frame and 40mm thick RCC cover for pit etc & no extra payment will be made. (ii) Quoted rates shall be deemed to include for earthing strip with protection pipe up to 7.5 M length.

Material & Labour for Installation, testing and commissioning of chemical earthing complete with 50 mm dia copper pipe filled with chemical/ magnisium sulphate as manufacturer's recommendation buried directly in ground vertically to a depth not less than 2mtr below normal ground level, earth electrode 25 x 3 mm copper strip connected to test point up to 7 mtr length with copper/ brass bolts, nuts, check nuts and washer beside brazing at all joints as directed and earthing lead protected with 40 mm dia light grade GI pipe from electrode and upto the earth test point with and including excavation in any type of soil, removal of surplus soil, PCC pit chamber in PCC (1:3:6) type C-1 using 20mm graded crushed stone aggregate, RCC cover 50 mm thick in RCC (1:2:4) type B-1 using 20mm graded crushed stone aggregate reinforced with 8mm dia MS deformed bars @75 mm C/C both ways incl MS angle iron frame of size 40mm x 40mm x 3mm and incl testing the earthing on completion including taking down of old unserviceable earthing of any type, complete all as specified and as directed by Engineer-in-charge. Note :- (i) Quoted rates shall be deemed to include for earthing strip with protection pipe up to 7 Mtr length. (ii) earth resistance should be less that 1 Ohm and recorded results to be submitted to Engr-in-Charge. (iii) Old earthings are conventional type and sch of credit has been accounted for accordingly.

Note :- (i) Quoted rates shall be deemed to include for earthing strip with protection pipe up to 7 Mtr length. (ii) earth resistance should be less that 1 Ohm and recorded results to be submitted to Engr-in-Charge. (iii) Old earthings are conventional type and sch of credit has been accounted for accordingly.

Material & Labour for earthing complete with galvanised steel earth electrode plate of size 600 x 600 x 6 mm thick, buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.50m below normal ground level, connected to galvanised iron wire of 4 mm dia upto test point with suitable GI nuts/ bolts and brazed properly up to main board including earth pit in cement concrete 1:2:4 type B-1, precast RCC cover in 1:2:4 reinforced with expanded metal, with suitable handle, excavation and earth work in any type of soil and including medium grade GI watering pipe 20mm bore with funnel wire mesh and light grade GI wire protection pipe 15 mm bore up to main board complete as shown in electrical plate No. 3 of MES schedule Part-I 2009, connected to earthing testing point including taking out existing unserviceable earthing including testing on completion complete all as specified and as directed by Engineer-in-charge.

Note - (i) The quoted rate shall be deemed to include the cost of excavation & earth work in any type of soil, charcoal & salt in alternate layers, 20mm GI pipe (medium grade) for watering 40mm GI protection pipe (light grade) funnel wire mesh PCC chamber in PCC 1:3:6 type C-1 cast iron frame and 40mm thick RCC cover for pit etc & no extra payment will be made. (ii) Quoted rates shall be deemed to include for earthing wire with protection pipe up to 7.5 M length.

S&F in repair for earth continuity conductor or main earthing lead of 32 X 6 mm galvanized iron strip, buried in ground or fixed to wall complete all as specified and as directed by Engineer-in-charge.

SHARMA ELECTRICAL ENGINEERS

R D Bansal