REPAIR MAINTENANCE OF LT OH LINES, UG CABLES, MCCB, MAIN SWITCHES, LT PANEL BOARD, POLE PAINTING, EARTHING AND ALLIED WORKS TO MESSES, BILLETS , OTM ACCN, GIS AREA AT AF STATION TAMBARAM

Amount

Excavation in trenches not exceeding 1.5 metre deep and not exceeding 1.5 metre wide and getting out in hard/dense soil for laying cable, foundation for pole etc complete

All as per item No. 1 here-in-before but depth exceeding 1.5 metre and not exceeding 3.0 metre deep.

Returning filling in soil including providing cable cushioning with riddled earth obtained from excavation, leveling watering and well ramming in layers not exceeding 25cm thick over the cushion layer all as specified and directed.

Removing of surplus soil to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point all as specified and directed.

M & L for brick protection to cable using old size sub class 'B' bricks, laid flat, dry butt jointed, laid lengthwise perpendicular to the axis of cable all as specified directed.

Relaying of old serviceable bricks of any size removed from old cable trenches laid across trenches for cable protection.

M&L for plain cement concrete 1:4:8, type D2, using 40 mm graded stone aggregate for foundation, filling and mass concrete all as specified and as directed

M&L for plain cement concrete 1:3:6, type C1, using 20 mm graded stone aggregate as in foundation/ coping of poles including necessary form work and finishing the exposed concrete surfaces even and fair all as specified and as directed

M&L for Straight through joints suitable for 3.5/4 core PVC insulated and PVC sheathed armoured LT underground cable with aluminium conductors including joint kits complete for making joints all as specified and as directed for the following : - Make :- Raychems / Densons / M-Seal /Birla-3M / CCI / Siemen

3.5/4 core cable 16 to 35 Sq mm.

3.5/4 core cable 50 Sq mm.

3.5/4 core cable 70 Sq mm

3.5/4 core cable 95 Sq mm

3.5/4 core cable 120-150 Sq mm

3.5/4 core cable 150-185 Sq mm

M & L for cutting Bitumen macadam / concret foot path to a depth 0.75 mm with suitable mechanical cutter making good with cement concrete 1 : 2: 4 type B1 ( 20mm graded aggregate ) complete all as specified

Cutting removing the vegetation growth and surface dressing all around the installation yard including 4/2 pole structure area to keep the installation area (external only) clean and tidy. Note :- All the sub station yards shall be kept clean through out the contract period by repeatedly removing the grass/weeds as many times as required depending on the growth of the grass. This item shall be measured and paid only once during entire CA period.

M/L for ACB 4 Pole, 415 V, Manual Drawout type with microprocessor release of capacity 630 Amps ACB 4 pole, 50 KA ruptaring capacity ,415 volts fixed overload & fixed short circuit setting including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferruls etc. after taking out the existing unserviceable and making good the disturbed surface complete all as specified and directed.

Taking out the existing LT UG cable of any description of following size to find out the fault and re-laying the serviceable LT UG cable 1100 Volts grade PVC insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including necessary lugs/thimble/ferules connection, testing and commissioning complete all as specified. Note: [a] Earth work, excavation sand cusioning, bricks for protection, GI pipe, LT UG Cable Joints etc shall be measured separately under relevant items of this schedule . [b] Defective portion of cable shall be removed, serviceable cable shall be re-laid and balance with new LT U/G cable .(C) New LT UG cable shall be measured and paid as Supply only LT UG cable under schedule /BOQ item No 17 of this schedule.

10 sqmm to 16 sqmm 2/4 core

16 sqmm to 25 sqmm 3.5 core

50 sqmm to 120 sqmm 3.50 core

150 sqmm to 300 sqmm 3.50 core

Supply and laying LT UG cable 1100 Volts grade XLPE insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including lugs/thimble/ferules connection, testing and commissioning and taking out old UG cables complete for the following sizes. Note: [a] Earth work, excavation sand cusioning, bricks for protection, GI pipe, LT UG Cable Joints etc shall be measured separately under relevant items of this schedule .

16 sqmm 2 core

16 sqmm 4 core

25 sqmm 3.5 core

50 sqmm 3.50 core

70 sqmm 3.50 core

95 sqmm 3.50 core

120 sqmm 3.50 core

185 sqmm 3.50 core

240 sqmm 3.50 core

300 sqmm 3.50 core

M&L for GI tubing 'Light' grade with all fittings for cable protection fixed on poles/walls/laid under roads crossing etc and made good the disturbed surfaces/area for following sizes of pipes :-

For 40 mm Bore

For 50 mm Bore

For 80 mm bore

For 100 mm bore

M&L for MCCB 4 pole, 415 volts fixed overload & fixed short circuit setting including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferruls etc. including taking out the existing unserviceable MCCB and making good the disturbed surface for following capacity.

200 Amps with breaking capacity 36 KA

400 Amps with breaking capacity 36 KA

M&L for MCCB 3pole, 415 volts fixed type including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferruls etc. after taking out the existing unserviceable and making good the disturbed surface for following capacity. [a] 63 to 100 Amps with breaking capacity 16 KA

200 Amps with breaking capacity 25 KA

M&L for Steel tubular swaged poles complete with base plate 8mm thick welded with pole, finial taper plug, bolt, nut and screws as specified type 410 SP-31 (9m long) including one coat of red-oxide zinc chrome primer and two coats of aluminium paint 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 numbering with black paint and painting with bituminous paint internally complete and externally for portion embedded in PCC including dismantling of old type of poles any length , complete all as specified and directed. Note : Excavation & earth work and PCC shall be measrued and paid separately.

M&L for painting the existing steel tubular LT poles, 9m long including cross arms, channels, angle iron support, bracings, clamps etc. with two coats 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 all as specified & directed.

M&L for cutting, trimming and prunning of trees/tree branches of any girth upto 4m all around existing LT/HT over head lines including cleaning the disturbed area beneath the LT/HT overhead lines and removing the tree/ tree branches and debris from at site and depositing where directed at site. Note: (a) This item shall be measured and paid only once during entire contract period , however each span of LT over head line shall be clear from tree branch growth through out the contract period seperately. (b) Cutting trimming, prunning of tree / branches shall be carried out as and when ordered by Engineer-in-chrage depending on growth of tree (c) Approximate span between poles shall be 45m to 60m.

Taking down old serviceable conductors any description and re-stringing/ tightening of ACSR conductor (size- squirrel/ weasel/ ferret) / GI earth continuity conductor/ cradle up to the permissible sag limit between any span length and binding the with new binding wire of the same materiel to insulators all as specified and as directed. Note :Approximate span between poles shall be 45m to 60m.

Dismantling old and unserviceable ACSR conductor of any size / including disconnecting from the poles and depositing where directed.

Supply & fixing ACSR conductor of any size including binding on existing LT/ HT poles or new poles with 2mm dia aluminium binding wire including jumper all as specified & directed . Make of ACSR : ICC/ NICCO/ BHARAT CONDUCTORS / Indian Aluminium Co.

Supply, fabricating and fixing mild steel cross arms (any type) supports, bracing stiffner etc made out of MS channel, angle iron , flat iron of any size including drilling of holes, making clamps, eye hooks, nuts, bolts and washers etc, welding if required including painting with two coats of aluminium paint over a coat of red oxide paint and taking down the existing all as directed.

Supply and fix, shackle type porcelain vitreous white, green or brown insulators for working pressure 1100 volts, 90mm dia 75mm height including removal of existing insulators. Make :- MYSORE/ BHEL/ PORCELAIN / JAIPURIA BROS / Jayshree / WS Insulators

M&L for pin type insulator, porcelain, vitreous, white, brown or green insulator of size 100 mm height, 65 mm dia for 1100 volts grade, including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron bolt including taking out the old unserviceable insulator and making good the all as specified and as directed. Make :- MYSORE/ BHEL/ PORCELAIN / JAIPURIA BROS / Jayshree / WS Insulators

M&L for removing old/burnt out jumper connection in binding with HT/LT lines from position including re-binding the same with new binding wire of size 3.25mm aluminium wire all directed.

Material and labour for earthing complete with GI plate electrode 600x600x6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of plate not less than 1.5m below ground level connected to earth lead of 25mm x3 mm GI strip means of bolts, nuts, washers of galvanized all as shown in electrical plate No.3 of SSR Part-I including necessary excavation and earth work. PCC 1:3:6 type C1 chamber, RCC cover, 50mm thick in cement concrete 1:2:4 type B1 with 6mm CTD 140mm centre to centre with suitable handle, watering pipe 20mm dia light grade pipe with funnel, charcoal salt, GI pipe 40mm dia for protest GI strip connected to earthing test point all as specified including testing and commissioning on completion all as specified and directed.

Supplying and laying synthetic Rubber insulated mats 2 mm thick for voltage upto 3.3 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m all as specified and as directed.

S&F of Danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters,figures and conventional skull and bones in single red colour and fixed with M S clamps, nuts and bolts of approved size, for HT, 25 x 20 cm size inculding taking down of old unserviceable complete all as specified and directed.

Supply & fixing ON load changeover switch with SS enclosure rated 200A , 415V -AC 50 HZ type 4 Pole all as specified & directed by the Engr-in-charge including taking down existing main switches directed for following Make : Havells Cat part No IHCNFE0200 or eqvt

Supply and fix automatic transfer switch execution rated voltage 415V AC 50 HZ type FP 200 Amps all as specified and directed by the Engineer-in-charge including taking down existing main switches Make : Havells cat part No IHYFCDO200 or its equivalent make from list of makes.

Supply Only Volt meter digital type 0 - 500 Volts

Supply Only Amp meter digital type 0 - 500 Amp

Supply Only Aluminium legs suitable for 70 sqmm to 150 sqmm cables

Supply Only Aluminium legs suitable for 185 sqmm to 300 sqmm cables

Supply Only Aluminium legs suitable for 25 sqmm to 50 sqmm cables

Supply only Indicator lamp LED type 'R' 'Y' 'B'

Supply only CT coil of size 4x4 ratio 100/5 Amps

Material and labour for welding in repairs not exc 2.5cm in length not exc 6m thickness of metal of metal to be welded complete all as spcified. NOTE : The rate quoted is inclucve of Hinges/ lock etc any other accessories .

Supply, install, testing & commissioning in repair / replacement of factory made indoor LT Panel board of sutiable size for 3 phase 415 volt of both side opening doubl door with push type metal lock, heavy duty wide hinges, seperate common across cable aley, made out 1.6 mm CRCA sheet with angle iron frame of size (50 x50 x 6 mm) and MC channel of size (75mm x 40mm) for panel base out door type , free standing cubical type totally enclosed dust and vermin proof with front and rear opening withlocking arrangment of 440 Volts , 3 Phase 4 wire 50 Hz having Alluminium Bus bar of capacity 200 Amps duly insulated with IP 54 protection,with powder coating including PCC foundation complete with following switches, space for 1 No vacant cubical suitable for 63 A cable alley including disconnecting and refixing LT XLPE cable with glands and lugs:- Incoming:- (i)MCCB 4P ,160 A, 25KA adjustable terminal and fixed magnetic type , 415 volts rating.with suitable spreader terminal - 2 No (One for EB incommer , One for DG incomer) (ii) Onload change over switch 160 A ,4 Pole -1 No. (iii) Multifunction LED meter complete with CT coil including set of indicating lamp RYB -1 set .(iv) 300 Amps capacity Aluminium bus bar with sleeves. -4 Nos. Out going - MCCB, 3 pole, 100Amps , 415 volts fixed type rating.with suitable spreader terminal.- 3 Nos .

Supply, install, testing & commissioning in repair / replacement of factory made outdoor LT Panel board of sutiable size for 3 phase 415 volt of both side opening double door with push type metal lock, heavy duty wide hinges, seperate common across cable aley, made out 3 mm CRCA sheet with angle iron frame of size (50 x50 x 6 mm) and MC channel of size (75mm x 40mm) for panel base out door type , free standing cubical type totally enclosed dust and vermin proof with front and rear opening withlocking arrangment of 440 Volts , 3 Phase 4 wire 50 Hz having Alluminium Bus bar of capacity 800 Amps duly insulated with IP 54 protection,with powder coating including PCC foundation complete with following switches, space for 1 No vacant cubical suitable for 63 A cable alley including disconnecting and refixing LT XLPE cable with glands and lugs:- Incoming:- (i) MCCB 4P , 400 A, 35KA adjustable type , 415 volts rating.with suitable spreader terminal.( ii) Multifunction LED meter complete with CT coil including set of indicating lamp RYB -1 set .(iii) 800 Amps capacity Aluminium bus bar with sleeves. -4 Nos. Out going - (i) MCCB, 3 pole, 25KA ,fixed type, 415 volts 200 Amps rating.with suitable spreader terminal.-2 Nos. (ii) MCCB, 3 pole, 25KA ,fixed type, 415 volts 100 Amps rating.with suitable spreader terminal - 2Nos.

Manufacturing, supply and fix in repair Etroreflective name board, made up of 2 mm thick aluminium sheet,of size area exc 1 sqm but not exceding 2 sqm , face to be fully covered with high intensity and encapsulated lens type heat activated retroreflective sheeting conforming to type - III of ASTMD-4956-01 as approved by Engineer-in-charge,letters, borders etc. as per IRC : 67-2001 in silver white with blue colour back ground and with high intensity grade, pasted on substrate by pressure sensitive adhesive backing which shall be activated by applying pressure conforming to class II of ASTM-D-4956-01 and fixing the same to the plate of stainless steel frame with two vertical stainless steel post of 50mm dia (length of post upto 3.00m incl embedded concrete portion) embedded in concrete of size 0.45x0.45x0.45m, including the cost of painting with two or more coats of epoxy paint in grey colour on the back side of aluminium sheet including appropriate priming coat. The rate includes the cost of rounding off the corners,lowering down the structural frame work from the gantry, fixing and erecting the same in position all complete as per drawings, specification and direction of the engineer-in-charge.

Supply fix in repair / replacement 200A Bus bar chamber 4 way wall mounted all as specified and directed.

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