REPAIR/MAINTENANCE OF LT DISTRIBUTION LINE, STREET SECRUITY LIGHT, PAINTING OF POLES, LIGHTING CONDUCTOR / ARRESTOR, DIFFERENT TYPES OF EARTHING INFRASTRUCTRE AND MISC WORKS AT AF STN SALUA UNDER GE (AF) KALAIKUNDA

Amount

Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in any kind of soil ,complete all as specified and directed Note : Manual excavation to be done. During excavation if any damage occured to existing cable any type/ water pipe line, it will be contractor responsibilty to get it repair and make functional by providing jointing kit etc without any extra cost. Contractor has to repair it within 24 hrs so that essential service can not be effected due to such damage.If contractor fails to repair it within 24 hrs penalty @ Rs 500/-per hour will be charged to contractor. In this GE decision will be final.

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

Removing surplus excavated material from site not exceeding 50 mtrs from starting point and depositing where directed at level not exceeding 1.5 mtr above the starting point all as specified and directed.

M&L providing sand cushioning with a layer of clean, dry, fine sand for protection of electric cable laid in trenches/ducts, punned down to desired thickness complete all as specified and directed. (Note: For payment purposes only punned down thickness of sand shall be measured )

M & L for laying old size sub class ‘B’ brick for PVC/ XLPE under ground cable protection in trench, layed in the manner that width of brick to be peperndicular to the axis of cable , over LT under ground cable complete all as specified and directed.

M & L for PCC M-10 (Nominal mix) using 40mm graded stone aggregate as in foundation, filling and mass concrete for foundation concrete in poles/stays.with and including demolition of cement concrete in any description complete all as specified and directed

M & L for PCC M-15 (Nominal mix) using 20mm graded stone aggregate for coping as in benching incl weathering slightly rounded, chamfered angles and finishing exposed surfaces even and smooth incl necessary formwork with and including demolition of cement concrete in any description complete all as specified and directed

Disconnecting and Taking out unserviceable, U/G cables, 1100 Volts grade from trenches/ducts/ poles etc of any size complete all as directed including taking out cable protection cover,pipe etc complete all as specified and directed

Supply, laying, jointing, testing and commissioning cross-linked polyethylene (XLPE) insulated cable for working voltages of 1100 V, PVC sheathed, armoured, 3½ core with reduced neutral conductors (3½ core), nominal cross sectional area of main conductor 95 sqmm, stranded aluminium conductor, ISI marked as per IS 7098(Part-I): 1988 including cable glands, lugs etc. to suit the cable size and to be laid in trenches, fixed along pole, under floors, through GI pipe laid under floors/roads, through concealed GI pipe along wall etc. complete all as specified and as directed.

All as per Item No 9.00 here-in-before but size of cable 70 sqmm 3½ core, complete all as specified and as directed.

All as per Item No 9.00 here-in-before but size of cable 50 sqmm 3½ core, complete all as specified and as directed.

All as per Item No 9.00 here-in-before but size of cable 35 sqmm 3½ core, complete all as specified and as directed.

All as per Item No 9.00 here-in-before but size of cable 25 sqmm 3½ core, complete all as specified and as directed.

All as per Item No 9.00 here-in-before but size of cable 16 sqmm 4 core, complete all as specified and as directed.

All as per Item No 9.00 here-in-before but size of cable 10 sqmm 2 core, complete all as specified and as directed.

Material and labour for 40 mm dia galvanized iron tube medium grade for cable protection, supporting to poles, plinth protections, road crossing, trenches, footpath etc, including all fitting clamps, nut, bolt and washers complete all as specified and directed.

All as per item Serial No 16.00 here-in-before but for 50 mm dia pipe complete all as specified and directed.

All as per item Serial No 16.00 here-in-before but for 80 mm dia pipe complete all as specified and directed.

Horizontal boring of holes by mechanical means, at under road/ pavement / hard standing etc.,not exceeding 15 Metres in length, in any type of soil, suitable for passing through 40 to 50 mm bore, galvanised steel tubing,and making good distrubed surfaces as per existing specification complete all as specified and directed. Note : GI pipe of dia 40 mm & 50mm will be measured & paid separately under respective items.

Horizontal boring of holes by mechanical means, at under road/ pavement / hard standing etc.,not exceeding 15 Metres in length, in any type of soil, suitable for passing through 80 to 100 mm bore, galvanised steel tubing,and making good distrubed surfaces as per existing specification complete all as specified and directed. Note : GI pipe of dia 80 mm & 100mm will be measured & paid separately under respective items.

Supply and Fix in repairs,moulded case circuit breakers (MCCBs),conforming to IEC 60947-2& IEC 60947-2, AC 415V, 4 pole, with current rating 63 Amps and 10 KA breaking capacity Icu at 415V, AC, 50Hz, with adjustable Over Load setting: 0.8 - 1.0 x In and adjustable Short Circuit setting: 6-10 x In, complete all as specified and directed.

Supply and Fix in repairs,moulded case circuit breakers (MCCBs),conforming to IEC 60947-2& IEC 60947-2, AC 415V, 4 pole, with current rating 100 Amps and 16 KA breaking capacity Icu at 415V, AC, 50Hz, with adjustable Over Load setting: 0.8 - 1.0 x In and adjustable Short Circuit setting: 6-10 x In,complete all as specified and directed.

Supply and Fix in repairs,moulded case circuit breakers (MCCBs),conforming to IEC 60947-2& IEC 60947-2, AC 415V, 4 pole, with current rating 125 Amps and 25 KA breaking capacity Icu at 415V, AC, 50Hz, with adjustable Over Load setting: 0.8 - 1.0 x In and adjustable Short Circuit setting: 6-10 x In,complete all as specified and directed.

All as per Item No 23.00 here-in-before but of capacity 160 Amps, 25 KA breaking capacity complete all as directed.

All as per Item No 23.00 here-in-before but of capacity 200 Amps, 25 KA breaking capacity complete all as directed.

All as per Item No 23.00 here-in-before but of capacity 250 Amps, 36 KA breaking capacity complete all as directed.

Supply and Fix in repairs, On Load Change Over Switch with sheet steel enclosure, Four Pole, Current Rating 100 Amps,8KA,Icw for 1 sec conforming to IS 13947 (Part 3)-1993; IEC: 60947-3, complete all as specified and directed. [ Make Siemens/ Legrand / Hager.]

Supply and Fix in repairs, On Load Change Over Switch with sheet steel enclosure, Four Pole, Current Rating 250 Amps,8KA,Icw for 1 sec conforming to IS 13947 (Part 3)-1993; IEC: 60947-3, complete all as specified and directed. [ Make Siemens/ Legrand / Hager.]

M & L in repair Air termination, single pointed, copper rod 12mm dia and 300 mm long complete fixed on wall/roof including fittings and fixing arrangement all as specified and directed..

Supply and fixing copper strip of size 20 x 3.15 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulator, 4 BM, heavy duty ( ceramic bus bar support insulator off white colour of suitable for mounting strip of 20 mm wide x 3.15 min thick) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 20 x 3.15 mm copper strip brazing to each joints and connected with by providing brass nut bolts and washer all as specified and directed by Engr in Charge. Note : Insulators shall be provided on every 50 cm. (Minimum 2 x insulators to be provided in every 1 x metre of strip and rate of the same deemed to included in quoated rates)

Supply and fixing copper strip of size 32 x 6 mm as earth continuity conductor or main earthing lead fixed on "V" type porcelain insulator 10 BM heavy duty ( ceramic bus bar support insulator off white colour of min size of 36 mm width x 60 mm length with 36 mm width bus bar mounting base) saddle to wall, buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 20 x 3 mm copper strip brazing to each joints and connected with by providing brass nut bolts and washer all as specified and directed by Engr in Charge.Note : Insulators shall be provided on every 50 cm. (Minimum 2 x insulators shall be provided in every 1 x metre of strip deemed to be included in quoated rates)

S&F in replacement of Porcelain insulator of existing size and specification for isolation of conductor from the building wall by providing 15cm long fastners complete all as specified.

S&F for Test Point junction box of suitable size with terminal block, IP 66 weather proof including four hexagonal anticorrisove screws for out door installation including provn of Test points as per IS specifications of shape and size 75x75x25 mm drilled and screwed incl 3 nos 8 mm dia 25 mm long hex head screw, made out of phospher bronze mounted and fixed on box with suitable grouting arrangements Suitable nut bolts, washers of various size as approved, complete duly fixed with ground/earth/roof conductor rigidly complete all as specified.

Supply & fixing ESE LA (Early streamer emission lightning arrester) with 79 meter radius at 5 meter height with level 1 protection level as per NFC 17 192 : 2011 through OEM service complete all as specified and as directed. Make - True Power ATS TP-3 or equivalent. Note : CPRI type test certificate to be provided along with material, installation is to be done through OEM representative.

Supply and fixing Brass Copper lightening arrester 9.2 mm diameter and 915 mm in length with 5 spikes and base plate 8.5 x 8.5 cm for building protection coverage of 45 degress from the top point 1.85 m all as specified and directed by Engineer in Charge.

Supply,installation,testing and commissioning 3 phase and neutral , 415 volts Feeder Pillar box outdoor type, CPRI approved, factory made free standing , floor mounting ,dust and vermin proof, cubical type LT panel fabricated from 3.15 mm thick CRCA sheet with angle iron frame of 50 x 50 x 6 mm , double door , front and back openable type, double door system, hinged opening , rubber lining,locking arrangement,with anticorrosive coating and finally epoxy polyester power coating with pure polyster Siemens grey structural RAL-7032 shade , protection class IP-66 fully compartmentalize design over all dimension (1.00x0.75x0.40) meter including canopy type roof 15 cm extended in all side with locking arrangement and gasket arrangement with one Nos pad lock of 7 lever and three Nos keys and back side fixed with nuts & guskets, including provision of one set of bus bar of 600 Amps (4 Nos. aluminum strip of size 60mmx10mm of 60 cm long) fixed on porcelain insulator and provision of cable gland for cable entry and aluminium lugs, nut bolts etc for cable connection andcable connection with proper lugs ,PCC foundation and pedestal for fixing LT Panel with PCC 1:5:10 , 15 cm thick in foundation , brick (Fly ash) / PCC block work in CM 1:6 , rendering 1:6 on exposed surface and 100 mm thick PCC 1:3:6 type C1 using 20 mm graded stone aggregate as in padding on top and grouting bolts etc for panel all as specified with and including supply and fixing the following accessories as specified . (The platform shall be of 450mm height above ground level):- (i) Incoming MCCB 3 Pole, 415 volt, 250 Amp rating, with adjustable overload setting and , short circuit setting, Ics-100 % Icu , service breaking capacity 25 KA --- 01 Nos with suitable size aluminium connection busbers covered with PVC sleeves for incoming sides of MCCB's inside the feeder piller box, all as directed as per site requirement. (ii) Incoming/Outgoing MCCB 3 Pole, 415 volt, 100 Amp rating, with adjustable overload setting and , short circuit setting, Ics-100 % Icu , service breaking capacity 25 KA --- 02 Nos with suitable size aluminium connection busbers covered with PVC sleeves for incoming & out going sides of MCCB's inside the feeder piller box (ii) Aluminium strip should be in RYB-B colour code with heat shrinkable PVC sleeves and hole in busbar strip as directed.

Material and labour for cleaning of cylindrical sludge collection chamber of Sewage pump miniumum size 4.0 mtr dia x 10 mtr depth by pumping out fluid and taking out sedimented sludge using the cleaning devices as per rule 5 and protective gear and safety devices as per rule 4 of the Prohibition of Employment as Manual Scavengers and their Rehabilitation Rules, 2013 and removing the sludge and solid contents outside MD land in closed covered container and painting of inside wall of sump and chamber with two coat black bituimious paint after preparartion of surfaces and two coat white wash on out side exposed wall exposed externaly, complete all as specified and as directed by Engr-in-charge. (ii) Contractor has to mention the date of cleaning of sump and next due date of cleaning by providing Acrylic board to fixed on wall. (iii) The contractor shall ensure that every worker engaged in cleaning has a life insurance policy of at least 5 lakh rupees, the premium for which shall be paid by the contractor. The rate quoted by the contractor shall deemed to be included for this aspect (iv) Arrangement of All T&P and safty of labour engaged for job shall be contractor reposibility The rate quoted by the contractor shall deemed to be included for this aspect (v) Sump to be cleaned in definate time peroid as mentioned in Particular specification (vi) All the screening chamber in permises of sewage pump house also to be cleaned by contractor without any extra cost.

M&L for carrying out brazing to earthing strip joint between earthpit and test point after removing the nut bolt ,scraping the strip,preparing the surface all as specified by Engr-in-charge

Supply only back filling compound Marconite : Product of Carbon International Ltd. UK. "Marconite" electrically conductive aggregate, to be used as backfill to enhance the effect of earth electrode and suitable for rock and all type of ground condition having low resistivity up to 0.001 Ohm meter, inert PH material, Corrosion free green product in bag of 25 Kg each in existing earth pits through G I pipes or necessay excavation as per site requirment all as directed .Note 1.Necessary earth work inlcluded in quoated rates. 2. PV and test report of materiial is mandatory to submit before his claim

M&L for Maintence and cleaning of surrounding area of sub stations, near LT panels, feeder pillars, transformer etc by cutting seasonal grass, bushes etc,including spreading of strong herbicides in order to stop the fast growth of grass/bushes around the feeder pillars and panels by employing skilled mazdoor including using own T&P as required to do the job and taking all precaution while men on working in sub station being dange zone all as specified and directed by Engr-in-charge. Note : As vegitation growth is very high in the Stn due to humid climate, area cleaning of installations can be repeated and to be done twice/thrice as per the requirement and directed by Eng in Charge.

Taking down unserviceable street /flood light / Security light fittings any type or any capacity from any location mounted on any type of Poles/Bdgs/ / Tower/ High mast of height up to 18 mtr from bracket after disconnecting of supply cable and refixing the same after carrying out repair and testing on exiting or new location as per site requirement, including repairing of circuit, electrical connection, replacement of defective driver, surge protection device, tracing and rectifying of fault complete all as specified and as directed by Engineer-in-Charge. Note : (i) Supply only LED driver with SPD and electric supply cable will be measured and paid separately under respective item.) (ii) All T&P, ladder etc required at site for the repairing and taking down / refixing of light fitting after repair shall be arranged by the contractor. (iii) If there is any fault in electrical supply line, it shall be contractor liability to identify the fault and get it repair for making the light functional complete all as directed .

S & F LED street lights nominal power 35 Watt, LED of Make Osram; Bridge lux; Philips; Nicha; Cree; LED wattage of minimum 3 watt each and Maximum 5 watt each, operational voltage of 170 volts to 270 volts, frequency of 50 Hz, lumen output of minimum 4200, lumen efficacy of minimum 120 lumens per watt, built-in integrated electronic LED driver, output open /short circuit protection, phase to phase protection, over voltage protection, surge voltage protection upto 4 KVs, protection grade IP 66, CRI greater than 80%, CW available CCT of 5700K, power factor of minimum 0.95, pressure die-cast aluminium alloy housing with epoxy powder coated metallic silver finish after phosphochromate treatment, life span of minimum 50000 working hours with Ik10 and L70 as per catalogue No.LR02-391-XXX-57-XX of Wipro or equivalent of Make mentioned under Appendix "B" including fixing at any height and including wiring using three core PVC insulated, PVC sheathed, flexible stranded copper conductor FR-LSH cables suitable for outdoor use, 1.5 sqmm as per IS 694: 2010 including taking out unserviceable complete all as specified and as directed.

S & F LED street lights nominal power 60 Watt, LED of Make Osram; Bridge lux; Philips; Nicha; Cree; LED wattage of minimum 3 watt each and Maximum 5 watt each, operational voltage of 170 volts to 270 volts, frequency of 50 Hz, lumen output of minimum 7200, lumen efficacy of minimum 120 lumens per watt, built-in integrated electronic LED driver, output open /short circuit protection, phase to phase protection, over voltage protection, surge voltage protection upto 4 KVs, protection grade IP 66, CRI greater than 80%, CW available CCT of 5700K, power factor of minimum 0.95, pressure die-cast aluminium alloy housing with polyester powder coated metallic silver finish after phosphochromate treatment, life span of minimum 50000 working hours with Ik10 and L70 as per catalogue No. LR02-671-XXX-57-XX of Wipro equivalent of Make mentioned under Particular specification including fixing at any height and including wiring using three core PVC insulated, PVC sheathed, flexible stranded copper conductor FR-LSH cables suitable for outdoor use, 1.5 sqmm as per IS 694: 2010 including taking out unserviceable complete all as specified and as directed.

S & F LED street lights nominal power 70 Watt, LED of Make Osram; Bridge lux; Philips; Nicha; Cree; LED wattage of minimum 3 watt each and Maximum 5 watt each, operational voltage of 170 volts to 270 volts, frequency of 50 Hz, lumen output of minimum 8400, lumen efficacy of minimum 120 lumens per watt, built-in integrated electronic LED driver, output open /short circuit protection, phase to phase protection, over voltage protection, surge voltage protection upto 4 KVs, protection grade IP 66, CRI greater than 80%, CW available CCT of 5700K, power factor of minimum 0.95, pressure die-cast aluminium alloy housing with polyester powder coated metallic silver finish after phosphochromate treatment, life span of minimum 50000 working hours with IK10 and L70 including fixing at any height and including wiring using three core PVC insulated, PVC sheathed, flexible stranded copper conductor FR-LSH cables suitable for outdoor use, 1.5 sqmm as per IS 694: 2010 including taking out unserviceable complete all as specified and as directed.

S & F LED flood lights nominal power 120 Watt, LED of Make Osram; Bridgelux ; Philips; Nicha; Cree; Samsung, LED wattage of minimum 3 watt each and Maximum 5 watt each, operational voltage of 170 volts to 270 volts, frequency of 50 Hz, lumen efficacy of minimum 120 lumens per watt, built-in integrated electronic LED driver, output open /short circuit protection, phase to phase protection, over voltage protection, surge voltage protection upto 4 KVs, protection grade IP 66, CRI greater than 80%, CW available CCT of 5700K, power factor of minimum 0.95, pressure die-cast aluminium alloy housing with polyester powder coated metallic silver finish after phosphochromate treatment, life span of minimum 50000 working hours with IK10 and L70 as per catalogue No. LF20-132-060-57-XX of Wipro equivalent of Make mentioned under particular specification including fixing at any height and including wiring using three core PVC insulated, PVC sheathed, flexible stranded copper conductor FR-LSH cables suitable for outdoor use, 1.5 sqmm as per IS 694: 2010 complete all as specified and as directed.

Note for Item No.41 TO 45 :- (i) If connection.cable from pole Juction box to street light and street light bracket up to 2 mtrs be included and measured in unit rate item, Beyond 2 mtrs of length to be paid seperately under respective items. (ii) At location where street lights/flood light are connected through overhead conductor, connection cable from light fitting to overhead conductor is deemed to be incl in the item rate. (iii) All LED street light/flood lights shall be properly connected with earth dolly provided with fittings and steel poles earth bolt. (iv)All LED lights have replacement warranty of 3 years from the date of completion of the contract accordingly condition 46 of GCC (IAFW-2249) shall be amended to extent mention above. Contractor has to submitt warranty certificate from manufacturer . Payment of light fitting will be released after receipt of 3 year replacement warranty certificate from manufacturer. (v) The LED lights will replaced by the contractor free of cost in the case of manufacturing defects and Failure due to electrical impact if not connected properly with earth. Hence it is contractor responsibility to connect the light fitting earth wire and shall be grounded properly. (vi) The contractor shall submit the surge protection certificate and Type test certificate LM 79, LM 80 for luminaries from LED manufactutre. (vii) All LED fitting shall be identified by printing or fixing stickers duly mentioned the C.A number and date of completion. (viii) For any change in product or change in catalogue No. etc due to technological upgradation, letter has to be obtained from the lighting company on their letter head signed by an offical of National level. (ix) All T& P required at site for installation of light on Pole / Bldg /Tower or at any location shall be arranged by contractor

Supply only in repair LED driver suitable for 15/20/30/ 35 watt LED street light , 240 Volt , 50Hz , AC . Make of Driver : Bajaj /Crompton/ C&S/ Havells/ Surya/Philips/Wipro (As per existing) Note :(i) Before procurement contractor shall check the make and model of u/s LED driver as per existing and bring the same or suitable to make the light functional.

Supply only in repair LED driver suitable for 45/60/70 watt LED street light , 240 Volt , 50Hz , AC . Make of Driver : Bajaj /Crompton/ C&S/ Havells/ Surya/Philips/Wipro (As per existing) Note :(i) Before procurement contractor shall check the make and model of u/s LED driver as per existing and bring the same or suitable to make the light functional.

M & L for bracket made out of GI pipe 40 mm dia medium grade, 1.5 metre long bent to shape with MS flat iron clamps made out of 40 mm X 6 mm thick mild steel nuts, bolts including taking down existing GI bracket including taking down old unserviceable complete all as directed by Engineer-in-charge

M&L for polycarbonate 3 phase busbar system pole junction Box dust, weather rain guarded cable entry and exit arrrangement with closing arrangement of size 300 x 200 x 150 mm with housing of 04 Nos 100 Amps aluminium bus bar fixed on porcelain insulator and connected of cables with lugs, nut bolts and washer including 06 Amps MCB all as specified and as directed.

M&L for FRLS wiring in existing locatation for circuit alongwith earth wire 2 x 2.5 sqmm + 1 x 2.5 Sqmm copper cable PVC insulated multistranded from junction box to fitting connecting box etc. (Two run of 2.5 Sqmm wire+01 Run of 2.5 Sqmm wire considered as one unit) all as specified and as directed.

Material and Labour for applying two coats of aluminium paint on old painted surfaces of steel tubular poles, type 410 SP-22/ SP-31 (8.5/9.00 Metres Long), including cross arms,brackets etc., up to 1.5 M above PCC base and marking alternate strip horizontally of width 15 cm with two coats of synthetic enamel paint (ordinary tint) above PCC base up to 1.5 M height and numbering of poles with letters and figures of height 75 mm at a height of 2.60 metre from ground level including preparation of surfaces complete all as specified and directed.

Material and Labour for applying two coats of aluminium paint on old painted surfaces of steel tubular poles, type 410 SP-41 (11 Metres Long), including cross arms,brackets etc., up to 1.5 M above PCC base and marking alternate strip horizontally of width 15 cm with two coats of synthetic enamel paint (ordinary tint) above PCC base up to 1.5 M height and numbering of poles with letters and figures of height 75 mm at a height of 2.60 metre from ground level including preparation of surfaces complete all as specified and directed.

Supply and fixing Ambient light timer switch i.e nature switch which can works bases on measurement of lux level of Infra red rays along with enclosure box having dust & termite proof outdoor type mountable on electric panel or on pole Single Phase with contactor rating 16 Amps, MCB rating 25 Amps and load bearing 3 KW all as specified and directed by Engineer in charge . Note :- The Timer switch having the following features:- (a) Automatic switching on at Dusk (ambient light less than 60 Lux). (b ) Automatic switching off at Dawn ( ambient light greater than 10 lux). (c) Duration based part night operation facility. (d) High voltage protection ( 280 V ) with auto reset. (e) Low voltage protection ( 150 V ) with auto reset. (f) Immunity to dust , bird sitting ,FOG & cloud cover. (g) Degree of protection conform to IP65.

All as per Ser Item No 53.00 but here in before Three Phase with contactor rating 16 Amps, MCB rating 20 Amps and load bearing 5 KW all as specified and directed by Engineer in charge .

Supply and fixing swaged & welded MS steel tubular poles, overall length 9.00 metre long, complete specification as per 410-SP-31 of IS: 2713-1980 complete with cast iron base plate, final taper plug, pole cap, bolts/nuts, screws/washes, painting with two coats of black bituminous paint through out internally and externally upto planting depth and two coasts of black and yellow alternate strips 30 cm each upto 1.2 mtr from the ground level. The remaining external position shall be painted with two coat of aluminium paint and one coat of cement based paint on PCC copping of pole including numbering of pole with black syenthic paint/ Stricker including dismantling/removing of old damaged Poles of any description and taking asides including all electrical connection, demolition of existing PCC foundation and making good to disturbed surface complete all as specified and as directed by Engr-in-Charge. (Note:- Earth work, PCC work, shall be measured and paid separately.)

Material & labour for earthing complete with copper earth plate electrode 600 mm x 600 mm x 3.15 mm thick burried directly in ground (Earth pit not less than 4 mtr deep below ground level) with top edge of the plate not less than 3.25 mtr below ground level connected to copper strip 20 x 3.15 mm as earth lead by brass nut bolts washer including brazing the copper strip with copper plate as shown in electrical plate No 3 connected to earth test point including necessary excavation for earth pit in hard dense soil, rocky / disintergate rock, filling charcoal and salt around the plate in layers , filling the pit with low resistivity agriculture soil free from stones, to be bring from out side defence land and mixed with Bentonite , (4 bags of 25 Kg each ), construction of inspection pit ( earth pit chamber) of brick work of size 600 x 600 x 600 mm with PCC copping of 1 :1.5: 3, 12.5 mm aggregate A1 with MS sheet 2.8 mm plate cover on frame of angle iron of size 40 x 40 x 5 mm with , wire mess, funnel, test point, 40 mm dia GI protection pipe light grade and 20 mm GI peforated pipe for watering etc complete and testing on completion. The electrode and lead shall be of copper all as specified and directed by Engr-in-charge (Copper strip upto 7.5 RM will be included in the item rate and copper strip beyond 7.5 RM will be measured seperately (Note : (i) Contractor shall use low reisistivity fresh agriculture soil , mixed with 4 x Bags of bentonite clay of 25 Kg each for refilling the pit to achive the desired resistance. (ii) copper strip will be laid below 60 cm from ground level and connected to test point through plinth protection (iii) Necessary cost of repair to plinth protection as per existing specification and connected plate and earth continuity conductor by providing 2 x brass nuts bolts and brazing of joints, bringing argiculture soil from out side defence land and cost of 3 x Bags of bentonite deemed to be included in the item rate. (iv) Contractor has to clear the side and disposed off the excavated soil from pit on completion of work. (v) Contractor has to submit test report of earthing after completing the earthing. (vi) Bentonite clay should be Conf to IS 6186: 1986. (vii) The cost of Copper strip of size 20X3.15 mm from top of earth plate upto 7.5 meter above ground level is deemed to be included in the unit rate of above item.and copper strip beyond 7.5 RM will be measured seperately. (viii). All the joints in copper strip and connection with Earth Plate to be welded through brazing and in addition by proving brass nut bolt and washer are deemed to be included in the unit rate. (viiii) Cost of brazing / welding and nut bolts are deemed to be included in the unit rate. (ix) Cost includes removal of excavated soil upto a distance of 100 mtrs.

M&L for Advance encapsulated compound based Marconite compound earthing maintenance free , with copper electrode of 88 mm dia (strip in pipe technology upgraded earthing system conforming IS 3043. The outer copper pipe shall be of 88 mm dia or manufacturer instruction and inner copper strip shall be of 25 x 3 mm respectively of 3 mtrs long with terminal size 50 x 6 mm . The annular space between the pipe and strip to be filled up with Compact fill (CF) (Crystalline Conductive) mixture. The job includes excavation of pit in any type of hard dense soil/ disinterigated rocky strata of size 1000 mm x 1000 mm x 3050 mm depth and taking out all excavated soil, lowering and placing copper electrode in centre of pit and filling of back fill marconite compound having excellent moisture retaining capacity in sourrounding of electrode in 400 mm dia all around the electrode( Min 5 bags of 25 Kg each of Marconite back fill compound per pit per unit to be fill or more quantity of BFC if required to achive less than one ohms). The remaining portion of earth pit to be filled with agriculture soil / black cotton soil free from stones etc to be bring from out side defence land . The earth pit should be provided with a FRP earth pit cover for protection and safe guard of terminals. The material of earth electrode should have good electrical conductivity & anti corrosion property in wide range of soil conditions. The job also include M & L for in PCC(1:2:4) type B1 around the FRP cover for support and foundation and colouring the PCC work with desired colour.complete all as specified and directed. NOTE: 1) The quantity of BFC indicated above is generally for normal/good soils.In case the soil resistivity is high , the quantity of BFC should be increased & cost of the same is deemed to be inclusive in the quoted rates. 2). If the desired earth resistance not obtained the earthing shall be re-done by contractor without any extra cost to Govt . 3). Removal of excavated soil and filling of agriculture soil brought from out side defence land shall be included in the overall rate quoted.

Make : Copper electrode : True Power Earthing Pvt Ltd. Model No. 80/3MTPPC (3 MTR Long, 80 mm dia) Product code CE -E-003 or equivelant make. Back fill compound : Marconite : Product of Carbon International Ltd. UK. "Marconite" electrically conductive aggregate, to be used as backfill to enhance the effect of earth electrode and suitable for rock and all type of ground condition having low resistivity up to 0.001 Ohm meter, inert PH material, Corrosion free green product in bag of 25 Kg each) Note :- (i) Design of earth electrode should be of Strip -in-pipe technology . (ii) Contractor have to submit literature of earth electrode and get the make approved of GE before procurement. (iii) The earth electrode shall be CPRI approved. (iv) Contarctor has to fill pure back fill compound all around the earth electrode in 400 mm bore up to full depth of bore. (v) Copper strip will be laid below 20 cm from ground level and connecting the test point through plinth protection using HDPE pipe for protection, necessary cost of repair to plinth protection and brazing and welding deemed to be included in the item. (vi) Contarctor shall submit the test report of earthing after completing the work of earthing duly singed by user. (vii) Contractor shall remove and disposed off the soil excavated from boring and clear the site before completion of work. (viii) Contractor has to submit the test certificate of electrode and back fill compound before claiming the payment. (ix).The cost of Copper strip of size 25X3 mm from top of earth plate upto 7.5 meter above ground level is deemed to be included in the unit rate of above item.and copper strip beyond 7.5 RM will be measured seperately.

MS R.K.ENTERPRISE

Neetu Construction