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| 1 | Supply and installation of Earthing rods for value below of 1 ohms as per following specifications(a) Earthing rod, 25mm pure copper hollow Earthing Rod with strip I pipe Design Length 3m. Copper Terminal of 100x50x5 (b) BFC Compound.The BFC is carbide based having very high electrical conductivity. BFC having high moisture retaining capacityBFC is hygroscopic, nonmagnetic and non - corrosive in nature and in ROHS compliant(c ) Installation The Earthing electrode will be placed in the ground after a bore is drilled to the depth of 3.5m The Bore drilling will be done with the help of pneumatic boring machine.]50KG BFC will be placed in the bore to cover the Earthing rod from all sides. BFC will be poured in slurry form in properly mixed condition. Earth pit cover square 300x300x240mm to be provided to cover the Earth pit. The Earth pit cover shall be made of Reinforced FRP and should be capable of carrying .The weight of 5 tones.Pit cover including brazzing of all the joints upto the test point complete and Earth Pit Indicaation Plate of MS 450x300x5 mm thick welded to AL 50x50x5mm x1.0 Mtr long,painted with one coat of primer and two coats of synthetic enamel paint(black colour)all as specified and directed by Engineer-in-Charge.Note : 1) Electrode must be testedfor short crcuit test of minimum 40ka at CPRI/NABL & test certificate of manufacture company submitted by contractor 2) Existing earthing Testing, After new earthing installation , testing & checked test with earth value certificate of companyprovide by contractor. |
| 2 | M & L for Earthing complete with galvanized steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.’25 mtr below normal ground level) with top edge of the plate not less 1.5 mtr below normal ground level connected to galvanized earth plate with 4.0 mm thick GI wire by means of suitable size of GI nuts, bolts, check nuts and washers all as specified in electrical plate SSR Part I including necessary .Exc & earth work, providing charcoal and salt dust layers and construction of PCC pit in 1:3:6 using 20 mm size graded stone aggregate, precast RCC 40 mm thick cover in 1:2:4 type B 1 with 12 mm dia steel MS plain bar, lifting handle GI pipe of 50 mm bore for earth lead protection andGI pipe 15 mm dia forwatering, with funnel and wire mesh including testing on completion. All as specified and as directed by Engineer-in-Charge incl dismentling existing unsserviciable earthing .Earth Pit Indicaation Plate of MS 450x300x5 mm thick welded to AL 50x50x5mm x1.0 Mtr long,painted with one coat of primer and two coats of synthetic enamel paint(black colour)all as specified and directed by Engineer-in-Charge.NOTE: After installation, testing & checked test with earth value certificate provide by contractor. |
| 3 | Earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than2.25 mtrs deep below ground level) with top edge of the earth plate at a depth of not less than 1.5 mtr below ground level connected to galvanized iron strip 25 x 4 mm as earthing lead by means of bolts, nuts and washers made out of GI/steel earth strip protected by GI light grade pipe of 40 mm dia and connecting to main panel board/switch board/control board all shown in electrical plate No 3 of SSR Pt I incl PCC chambers in 1:2:4 and RCC cover slab with 8mm dia MS bars reinforced at 10 cm center to center both ways incl earth work like excavation, returning filling back disposal etc complete.All as specified and as directed by Engineer-in-Charge incl dismentling existing unsserviciable earthing .Earth Pit Indicaation Plate of MS 450x300x5 mm thick welded to AL 50x50x5mm x1.0 Mtr long,painted with one coat of primer and two coats of synthetic enamel paint(black colour)all as specified and directed by Engineer-in-Charge.NOTE: After installationtesting & checked test with earth value certificate provide by contractor. |
| 4 | M&L for soil resistivity testing for satisfactionearthing value All as specified and asdirected by Engineer-in-Charge Note : after testing test certificate of companysubmited by contrector . |
| 5 | Supply & Fixing for copper strip 20 x 3.15mm includingwith saddles and fixing screws etc for roof conductors and down conductors above ground for earth continuityto wall on batten or recess or chases or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. NOTE: Cement cube for fixnig the strip shall be deemed to be included in qoted rates. |
| 6 | Ditto As per item No 05 above but copper strips for loop earthing buried in groundof size 32x6mm. |
| 7 | Supply & Fixing air termination, single pointed copper rod 12mm dia and 300mm long on aluminum/ copper strip including provision holes & bolts for fixingcomplete all specified and directed by Engineer-in-Charge. |
| 8 | Supply & Fixing test point terminal block made of gun metal or phosphorus bronze size 75x 75x 25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw |
| 9 | Supply & Fixing for galvanized iron strip 25 x 4 mm includingwith saddles and fixing screws etc for roof conductors and down conductors above ground for earth continuityto wall on batten or recess or chases or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. NOTE: Cement cube for fixnig the strip shall be deemed to be included in qoted rates. |
| 10 | Supply & Fixing brass/copper Nut ,Bolt,Space bar, saddles and fixing screw for copper strip any size/air terminatio/testing block complete all specified and directed by Engineer-in-Charge. NOTE: 1)Cement cube for fixnig the strip shall be included in qoted rates. 2) all conecting items materials are as per site items used properly. |
| 11 | Supply laying and testing cable XLPE insulated screened beded,galvanized steel trip or wire armoured, electric power cables (heavy duty) 1100 Volt grade wiyh stranded aluminium conductor of size 35 sq mm 3,1/2 core. Including taking down old unserviceable cable any size by dismantling of all electrical connection etc all as directed by Engineer-in-Charge. |
| 12 | All as per item no 11 here-in-beforebut of size 50 sq mm 3,1/2 core. |
| 13 | All as per item no 11 here-in-before but of size 70 sq mm 3,1/2 core. |
| 14 | All as per item no 11 here-in-before but of size 185 sq mm 3,1/2 core. |
| 15 | Supply and fix cable jointing kit for 1.1 KV grade cable for straight through joint complete with Jointing material heat Shrink type and accessories suitable for 3 ½ / 4core XLPE,armoured, Al conductor cable of size 25 to 50 sqmm,Indoor/Outdoor type . The cable fault location digghing,removing, and after cable jointkitfixing,returning of diggings and removingitems rate shall be deemed to be included in quoted rates. |
| 16 | All as per item No 15 here-in-before butfor cable of size 70 to 95 sq mm. |
| 17 | All as per item No 15 here-in-before butfor cable of size 185 sq mm. |
| 18 | Excavation in trenches not exc. 1.5m wide and not exc 1.5m in depth and getting out in Soft and loose soil for laying of cable trenches all as specified and directed by Engineer-in-Charge. |
| 19 | All as per item No.18here-in-before but in hard dense soil |
| 20 | Returning filling in, including spreading, levelling, watering and well ramming in layer not exc 25cmall as specified. |
| 21 | Removal of surplus soil(excavated soil) to distance not exceeding 50m and depositing where directed by Engineer-in-Charge at a level not exc 1.5m above the starting point and all specified. |
| 22 | M&L for providing dry river sand / crush stone dust for cushioning to UG cable including punning down of sand in layers all as specified. Note :- Cushioning will be measured and paid after punning down. |
| 23 | Supply and laying factory cast, unreinforced precast concrete cable cover factory made embossed the mark “LT CABLE” class LV type1 flat size 250x150x40 mm laid in trenches as specified and as directed by Engineer-in-Charge. |
| 24 | Cutting and filling bituminus roadas per direction of Engr in Charge for laying of UG cable and match the existing road to the existing system. |
| 25 | S & F Outdoor Type, weather and vermin proofBus bar panel made out of 3 mm thick stainless steel sheet includingfour pole 250 Amps MCCB 415 Volts 50 Hz with front opening and locking arrangement, 300 Amps capacity aluminium bus bar for phase, 3 No\"s and 1 No200 Amp bus bar for neutral, mounted on epoxy insulator including neccessary copper control wiring, heat shrinkable, RYB coloured sleeves over bus bar for identification, RYB led indicater for 3phase supply,earth shields, circular holes at bottom / top to receive incoming and outgoing cable, cable lugs, cable gland of sizes as required floor mounting angle iron frame made out mild steel angle iron of size 40 x 40 x 6 mm grouted 25cm above GL on PCC (1:3:6) upto required heightall as specified and as directed by Engineer-in-Charge. |
| 26 | Supply & laying GI pipe light graded of size 50mm diain trenches and fixing on wall / pole with help of suitable size MS clamp for cable protection from cable ground to junction box all as directed by Engineer-in-Charge. |
| 27 | M&L for Earth Pit Indicaation Plate of MS 450x300x5 mm thick welded to AL 50x50x5mm x1.0 Mtr longfixed on PCC block of size 200 x 200mmx 200mm, plate painted with one coat of primer and two coats of synthetic enamel paint(black colour) and marking such as location,date,ohm etc by white colour all as specified and as directed by Engineer-in-Charge . |
| 28 | M&L for 22 KV HT cable routemarker inMSround Plate of dia 15 cm x 8 mm thick welded made on AI 50 x 50 x5 mm x 1.0 Mtr long angle iron fix on PCC block of size 200 x 200mmx 200mm,Painted with one coat of primer and two coats of synthetic enamel paint (Black Colour) duly mentioning\"22 KV HT\"in 25 mm MSletter grouted on plate and fixing on ground above the cable of every 50 meter length. all as specified and as directed by Engineer-in-Charge . |
| 29 | M & L for LT route markerinMSround Plate of dia 15 cm x 8 mm thick welded made on50mm x50mmx 6 mm angle iron fix on PCC block of size 200 x 200mmx 200mm,Painted with one coat of primer and two coats of synthetic enamel paint (Black Colour) duly mentioningin 25 mm MSletter grouted on plate, including indicating LT 1100V U/G Cable and fixing on ground above the cable of every 50 meter length.all as specified and as directed by Engineer-in-Charge |
| 30 | M&L forLoose filling with aggregates of gauge 40 to 80 mm insubstation premises including cleaning of substation complete all as specified and as directed by Engineer-in-Charge at site by Engineer in Charge . |
| 31 | M&L for defect rectification HT/LT cable laid in trenches by locating fault with the help of electronic fault locating machine comprising of surge generator pulse, ECHO fault locator with high frequency distance calculator etc.including and additionalexcavation in normal alluvial strata required forexposing the cable fault ; removal of deteriorated portion of cable treating of cable and keeping the same ready for jointing work for cable of size up to 300 Sq mm 3 core & LT cable of size upto 240 Sqmm. The fault locating equipments will be brought to site within the hours of instruction from Engr-in-Charge as specified,Note : The cable fault location digghing,removing, and after cable jointkitfixing,returning of diggings and removingitems rate shall be deemed to be included in quoted rates. |
| 32 | M&L for Marking of any size plate , Scrubing of existing rusted/unread surface of earthing plate and prepration surfacesfor marking, Marking done by two colour. numbers and wordsmarking done by white colour and back side colour and shapeas per direction of Engineer-in-Charge . |
