REPAIR/REPLACEMENT AND MAINT OF EXTERNAL ELECTRIC SUPPLY WORKS AND OTHER CONNECTED ITEMS AT HQ 11 SECTOR AND DHARMUND UNDER AGE (I) BHALRA

Disconnecting defective out door/indoor transformers of capacity up to 250 KVA from HT/LT side, taking out complete transformer oil, storing the same in suitable container (to be arranged by the contractor) opening the top cover and lifting the core assembly by means of tripod and chain pulley block carefully to check its condition, refilling the transformer oil after complete dehydration/filtration if required (to be paid separately) and necessary repairs re fixing complete core assembly fixing the top cover and complete core assembly fixing the top cover and re-installation complete all as specified and directed. Note : (a) Pole mounted transformer lowering and taking down the same from two /four pole structure to ground carefully & rate will be considered in the quoted rate. (b) In case of major repairs/replacement in transformer which can not be undertaken at site the transformer shall be shifted at civil workshop and the cost shall be paid separately under relevant items. (c) Cost of dehydration/filteration and other necessary repairs shall be measured and paid separately under relevant item. Contractor shall bring the mechanic at site for first inspection of the transformer after that transformer shall be shifted at workshop complete all as directed by Engr-In-Charge. .

Transporting of burnt out transformer for repair to civil workshop by arranging necessary transpoprt for shifting for and Strip opening of transformer and removing the top cover for repair, and taking out the burnt out core alongwith HT/LT coil (windings) assembling the core after replacement of HT/LT coils heating varnishing, testing and housing accessories in transformer body and connection up filling in dehydrated transformer oil and connection with existing electrical system HT/LT and commissioning complete on load of capacity not exceeding 250 KVA.(Transformer oil will be measured and paid separatily).

M&L for rewinding with supper enamelled double paper covered copper wire for HV (11/0.433KV) winding having existing size and giving proper insulation and de-moisturizing before assembling the winding core and including primary testing, ratio testing, no load testing, core insulation testing and setting connection of tap changer including taking out unserviceable winding wire complete all as specified and as directed.

M&L for reconditioning of LT side coils by removing it from its postion carefully and refixing the same carefully by providing insulation material, packing and spacers etc and de-moisturizing before assembling and number of turning & weight to suit with existing coils including primary testing, ratio testing, no load testing, core insulation testing and setting connection of tap changer complete all as specified and directed by Engr-in-charge.

De-hydration/ filtration of transformer oil by hiring on line filtration plant to achieve di-electric strength not less than minimum 50 KV with 2.5 mm gap including following work services :- (a) Removal of all suspended particles such as dust, rust, scales, collided carbon oxidation sludge etc upto < 1 micron. (b) De-hydration of transformer oil under vaccum. (c) Circulation of heated oil and filling of treated oil in transformer tank. (d) Top up the transformer oil upto the level NOTE : (i) Contractor shall use the vehicle mounted filtration plant with new suitable size heavy duty hose pipe. (ii) The transformer oil required for replacing/top up shall be measured and paid separately as "Supply only" (iii) Conducting field testing of di-electric strength of the transformer oil before and after filteration (iv) Checking the megger/earth resistance values with battery operated megger of 5 KV

M&L for Filling / topping of new transformer oil having dielectric strength not less than 60 KV complete including centrifuging of oil (if required) up to getting dielectric strength not less than 60 KV with 4 mm gap all as specified and directed by the Engineer-in-Charge

Supply and fixing in repair/replacement breather assembly of Transformer incl silica gel upto 250 KVA transformer as per existing make and type 500 Gm complete all as specified and as directed.

Supply and fixing in repair/replacement brass terminal stud 12 mm with nuts, check nut, oil seal and washer for HV side of transformer up to 250 KVA transformer complete all as specified and as directed.

Supply and fixing in repair/replacement brass terminal stud with nuts, check nut, oil seal and washer for LV side of transformer of any make (as per sample) up to 250 KVA transformer complete all as specified and as directed.

Supply and fixing in repair/replacement bushing of HV side as per existing size/Model of the capacity up to 250 KVA transformercomplete all as specified and as directed.

Supply and fixing in repair/replacement bushing of LV side as per existing size/Model of the capacity up to 250 KVA transformercomplete all as specified and as directed.

Supply & fixing in in repair/replacement of switch air break, gang operated, triple pole, mechanically operated suitable for horizontal or vertical mounting, fixed type, mounted on insulator and steel frame with operating mechanism worked from ground level, provided with locking arrangement for operating handle, consisting of MS channel, HT post type insulator, contacts of copper alloy, high pressure, heavy duty contact assembly, operating rod of 25mm dia GI pipe medium grade, drop out expulsion assembly of phases fuses etc conforming to IS:1018 of 1972 with continuous current rating with 12 insulators of current rating upto 400 amps 11000 volts grade, complete all as specified & directed.

Supply & fixing in repair/replacement aluminium conductor steel reinforced (ACSR) of any size for HT/LT overhead lines on steel tubular poles/PCC poles, stretching without kinks and bends including binding wire suitable cross section (but not less than 16 SWG), complete all as specified & directed.

M&L in repair/replacement Cross arms, 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 primer coat, one under coat and one finishing coat of paint, complete all as specified & directed.

Material & labour for painting to existing steel tubular HT poles, 11 Mtr long including cross arms, channels, angle iron support, bracings, clamps etc. with one coat of aluminum paint superior quality of approved make on surfaces exposed to view and making 30cm wide strips (total 5 Nos) with white and black paint alternately on external surface above PCC benching including preparation of old painted surfaces by scraping etc complete and writing pole numbers. of 2 inches bold letters with black paint after painting, complete all as specified & directed.

Material & labour for painting to existing steel tubular LT poles, 09 Mtr long including cross arms, channels, angle iron support, bracings, clamps etc. with one coat of aluminum paint superior quality of approved make on surfaces exposed to view and making 30cm wide strips (total 5 Nos) with white and black paint alternately on external surface above PCC benching including preparation of old painted surfaces by scraping etc complete and writing pole numbers. of 2 inches bold letters with black paint after painting, complete all as specified & directed.

Supply & fixing in repair/replacement lightening arrestor, expulsion type consisting of multiple spark gaps in series with one or more non linear resister to limit voltage surge on AC power circuit to interrupt power flow current suitable for outdoor installation and exposed direct to sun with ambient temperature below - 10 degree C to 50 degree C suitable for surge discharge capacity 65 KA, 11000 volts grade conforming to IS-4350 including all fittings, complete all as specified & directed.

M&L for searching fault location of HT/LT UG cable 11000/415 Volts laid in trenches/ducts with the help of electronic fault locating machine comprising of surge generator pulse, ECHO fault locator with frequency distance calculator etc incl transportation of machinery and Excavation in normal soil strata exposing the cable fault removal of deteriorated portion of the cable treating of cable of any size including disconnecting and re-fixing cables with lugs as per direction of Engineer-in-charge.

Taking out old unserviceable HT UG Cable, 1100 volts grade of any type and size by disconnecting the connection carefully from both the ends complete all as specified and directed by Engr-in-charge.

Supply , laying & testing XLPE insulated, armoured, heavy duty electric cable with stranded aluminium conductor, 11000 volts grade earthed , laid in trenches, sleeving through pipes or fixed on poles & walls or laid under floors including jointing with suitable size aluminium lugs complete of size 95 Sqmm 3 core nominal cross sectional area complete all as specified and directed as per IS-7098 (Part-I)

Supply and fix in repair/replacement HT Aeriel Bunched cable 11000 volts grade, stranded and compact aluminium phase conductor of size 3 core x 95 sq mm + 1 x 70 sq mm bare messenger conductor with aluminium alloy. The phase conductor shall be insulated with XLPE (Cross Liked Polyethylene) confirming to IS : 6474-1971, insulation colour shall be black. Three power cables shall be suitably twisted around bare AAAC steel messenger. All as confirm to IS : 14255-1955 including suitable size of MS clamps, nuts, bolts and MS hooks to be fixed on existing pole for cable hanging complete all as specified and directed by Engr-in-charge.

Material & labour cable jointing kit for HT 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50-95 sqmm including testing and commissioning & taking down old unserviceable cable jointing kit, complete all as specified & directed.

M&L Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and directed.

Material & labour cable jointing kit for HT 11 KV grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for Single core XLPE aluminium conductor Aeriel Bunched (AB) cable of size 95 sqmm including testing and commissioning & taking down old unserviceable cable jointing kit, complete all as specified & directed.

M&L Cable jointing kit for 11 KV grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for Single core XLPE aluminium conductor Aeriel Bunched (AB) cable of size 95 sqmm complete all as specified and directed.

Taking out old unserviceable LT UG Cable, 1100 volts grade of any type any size by disconnecting the connection carefully from both the ends complete all as specified and directed.

Supply Laying, jointing with suitable thimble and cable gland, testing and commissioning or fixing in Wall or passing through pipe, 1100 volts grade heavy duty cable with XLPE insulated screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty ) with aluminium conductor cable of size 95 Sqmm 3.5 core , 1100 volts, grade cable all as specified and as directed.

Supply Laying, jointing with suitable thimble and cable gland, testing and commissioning or fixing in Wall or passing through pipe, 1100 volts grade heavy duty cable with XLPE insulated screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty ) with aluminium conductor cable of size 50 Sqmm 3.5 core , 1100 volts, grade cable all as specified and as directed.

Supply Laying, jointing with suitable thimble and cable gland, testing and commissioning or fixing in Wall or passing through pipe, 1100 volts grade heavy duty cable with XLPE insulated screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty ) with aluminium conductor cable of size 16 Sqmm 2 core , 1100 volts, grade cable all as specified and as directed.

Supply and fix in repair/replacement 11 KV CTPT metering unit , type outdoor oil cooled , pole mounted , CT Ratio:5/5 A , Burden 10 VA, Class-0.5 S , STC -3 KA/1 Sec and PT Ratio 11KV/110 V, Burden -0.50 VA, Class-0.5 S, insulation -12 KV/28KV all as per IS-2705/1992 and IS-3156/1992 all as specified and as directed.

Stretching/tightening of existing ACSR conductor of any size any number of conductors on HT/LT poles after opening binding wire from insulators and removing spacers upto a level to maintain a permissible space between conductors after rebinding the conductor with insulator with GI wire, complete all as specified & directed.

Supply & fix in repair/replacement Bus bar Panel, Size:0.8x0.4x0.4 Mtr, Kisok outdoor type, CPRI type tested, LT 440 Volts, 50 Hz , 3 Phase 4 wire supply , floor mounted factory fabricated dust weather and vermin proof protection class IP 54 made out of 1.4 mm thick MS Sheet CRCA on angle iron 30X30X4mm frame of size suitable to incorporate following accessories with front opening doors, locking arrangement powder coated internally and externally, shall have channel base of appropriate size and mounted on PCC foundation of size as required or approved by manufacturers in PCC 1:3:6 type C-2 , using 40 mm graded crushed stone aggregate including earth work complete comprising of Bus bar chamber comprising 4 Nos Aluminium strip bus bars PVC insulated made of aluminium strip of size suitable for 200A current. PVC sheathed with colour coding.

M&L in repair/replacement for LT line PVC Spacers for the following sizes:-

(a) Spacer for two wire

(b) Spacer for three wire

(c) Spacer for four wire

(d) Spacer for five wire

Supply only Aluminium lugs of any type complete all as per of sample of following sizes :-

(a) 10 sq mm

(b) 16 Sqmm

(c) 25 Sqmm

(d) 50 Sqmm

(e) 70 Sqmm

(f) 95 Sqmm

(g) 120 Sqmm

(h) 150 Sqmm

(j) 240 Sqmm

Supply & fixing inreplacement of Steel Tubular swaged poles type 410 SP-31 (9.0 mtr long) conforming to IS : 2713 Part-I to III 1980, complete with 6 mm thick mild steel base plate, finial taper plug, MS bolts, nuts, screws including painting upto 1.5metre above PCC coping in black and white strips 05 Nos of 30cms each starting from the bottom of the pole and two coats epoxy based paint aluminium grade finish to the remaining external surface over one coat of primer complete including taking down old unserviceable pole all as specified and as directed.

Excavation of soft/loose soil in trenches not exc 1.5 meter wide & not exc 1.5 mtr in depth: for foundation etc or for manholes, laying of pipe in any type of soil and getting out complete all as specified

All as per srl item No 36 here-in-before but depth exceeding 1.5 mtr and not exc. 3.0 mtr, all as specified and directed.

Returning, filling including spreading, leveling, watering and well ramming in layers not exceeding 25cm each complete all as specified and directed.

Removing excavated soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

M & L for dry sand cushioning to underground cables with 8cm thick before laying of cables and 15cm thick after laying and stretching of cable all as specified and directed . (Punned thickness shall be measured and paid).

M & L for Old size sub class ‘B’ bricks, laid in trenches as cable covers complete all as specified and directed.

Cutting existing road surfaces or hard standing 0.45 mtr depth and 0.3 mtr width (22 CM thick comprising bituminous topping) for laying of pipes/cables and making good to the disturbed surfaces to match with existing complete all as specified and directed. (Note : Rate quoted by the contractor deemed to be inclusive of PCC 1:2:4 to be required for making good the disturbed surface to match with existing.)

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

M & L for cement concrete 1:2:4 type B-1 using 20mm graded stone aggregate in copings to poles & the like, etc including weathering, slightly rounded or chamfered angles and throating as directed including necessary form work complete all as specified and directed by Engr-in-charge.

Disconnecting and taking down existing security light/flood light fitting of any make or any capacity from any height 9 Mtr/11 Mtr pole/ High Mast pole upto 17 Mtr for repairs or replacement of burnt/worn out accessories (surge protector, driver, cable etc) through ladder/motorised/manual system from GI braket on pole of any size and refixing the same after cleaning, general overhauling, repairing and making serviceable and refixed the same after making serviceable and testing complete all as directed by Engr-in-charge. Note :- The new consumable item will be measured and paid seperately as under below :-

Supply only driver of any make or any model on existing LED street light luminaires of wattage 45 to 120 watt for LED street light fitting to match with the existing make and model complete all as specified and directed by Engr-in-charge.

Supply only driver of any make or any model on existing LED flood light luminaire of wattage 60 to 120 watt for LED street light fitting to match with the existing make and model complete all as specified and directed by Engr-in-charge.

Supply & fixing street light fitting 60 Watt LED made up of pressure die cast aluminum hosing with high power LED as lighting source and lens embedded PC cover having top opening separate driver compartment with IP 66 protection and impact resistance of IK07 with 10KV built-in surge protection device including taking down old unserviceable street light fitting all as specified and as directed by Engr-in-charge.

Supply and fixing high efficiency energy saving IP 66 protection dia cast aluminium roadway luminaire with high power LED flood light of 120 watts and making connections with provision of twin core twisted copper wire 23/0.0076 upto 1.5 mtr length complete including taking down old unserviceable street light fitting all as specified and as directed by Engr-in-charge.

S&F in repair/replacement of connection for security light/red/green indication light with cable of size 1.5 sqmm x 3 core PVC insulated unsheathed FRLS copper cable through pole , complete all as specified and as directed.