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| 1 | M&L for providing earthing with and including GI earth plate electrode 6 mm thick of size 600 mm x 600 mm with 4 mm dia GI wire earthing lead complete all as shown in electrical plate No. 3 and as per MES SSR Part-I specificatons including dismantling old, complete all as specified and directed. |
| 2 | NOTES APPLICABLE TO SERIAL ITEM 1: (a) The unit rate includes earthing lead and protection pipe upto 7.5 metre from top of earth plate.(b) Factory made PCC pit with cover shall be fixed at least 500mm away from the earth pit.(c) Earth resistance should be less than five Ohm. In case the test results are not found below five Ohm, complete earthing shall be redone by contractor without any extra cost to Govt . |
| 3 | M&L for providing earthing with and including GI earth plate electrode 6 mm thick of size 600 mm x 600 mm with 25 mm x 4 mm GI strip earthing lead complete all as shown in electrical plate No. 3 and as specified in SSR Part-I specifications including dismantling old, complete all as specified and directed. |
| 4 | M&L for providing earthing with and including GI earth plate electrode 6 mm thick of size 600 mm x 600 mm with 32 mm x 6 mm GI strip earthing lead complete all as shown in electrical plate No. 3 and as specified in SSR Part-I specifications including dismantling old, complete all as specified and directed. |
| 5 | NOTES APPLICABLE TO SERIAL ITEM 2 & 3: (a) The unit rate includes earthing lead and protection pipe upto 7.5 metre from top of earth plate.(b) Factory made PCC pit with cover shall be fixed at least 500mm away from the earth pit.(c) Earth resistance should be less than ten Ohm. In case the test results are not found below ten Ohm, complete earthing shall be redone by contractor without any extra cost to Govt . |
| 6 | M&L for providing earthing IN REPLACEMENT with and including copper earth plate electrode 3.15 mm thick of size 600 mm x 600 mm with 20 mm x 3 mm copper earthing strip complete all as shown in electrical plate No. 3 and as specified in MES SSR Part-I.Note:- (a) The unit rate includes earthing lead and protection pipe upto 7.5 metre from top of earth plate.(b) Factory made PCC pit with cover shall be fixed at least 500mm away from the earth pit.(c) Earth resistance should be less than three Ohm. In case the test results are not found below three Ohm, complete earthing shall be redone by contractor without any extra cost to Govt . |
| 7 | M&L for providing maintenance free chemical pipe-in-pipe earthing electrode in replacement as per HEX Cat No. HSPC-503-100 (using copper plated pipe) or equivalent in TRUEPOWER including necessary excavation & earth work by making bore of 80 mm dia and 3500 mm in depth, all as recommended by manufacturers and connecting to earthing strip with necessary nuts, washers and bolts, complete all as specified and directed. |
| 8 | M&L for providing maintenance free chemical pipe-in-pipe earthing electrode in replacement as per HEX Cat No. HSPG-503-100 (using hot dip galvanised pipe) or equivalent in TRUEPOWER including necessary excavation & earth work by making bore of 80 mm dia and 3500 mm in depth, all as recommended by manufacturers and connecting to earthing strip with necessary nuts, washers and bolts, complete all as specified and directed. |
| 9 | NOTES APPLICABLE TO SERIAL ITEM 5 & 6: (a) Earth resistance should be less than three Ohm. In case the test results are not found below three Ohm, complete earthing shall be redone by contractor without any extra cost to Govt .(b) Pipe earth electrod shall be inserted into the bore and space around will be filled with Back Fill Compound TERRAHEX of M/s HEX or equivalent conforming to IEC 62561-7 & RoHs2 standards.(c) Pit & cover shall be of precast PCC of size as per manufacturers recommendation. |
| 10 | M&L for providing Maintenance free Eco safe corrosion resistant earthing in replacement comprising the followings:-- (a) High tensile low carbon steel earth 3 metre Length and 17.2mm dia with 250 micron (average) molecularly bonded copper on the outer surface to conform with requirement of UL467 & IEC 62561-2 (Dia of the rod & UL Control Number allotted to the manufacturer should be embossed on the rod & UL certificate from the same manufacturer shall be submitted along with the material) (b) Back-fill earthing enhancing compound should strictly be a Eco Safe Carbon based conductive concrete type which has a resistivity of less than 0.12 Ohm Mtr as per Clause 14.5D of IEEE : 80 standard . Back-fill compound should be electronically conductive (Like in metals) and should not depend on moisture for conduction. Jef Eco Safe Carbon based compound shall be supplied in 20 Pounds Bag. Back-fill compound should be environment friendly, should solidify when mixed with water and set like concrete and should not leach / diffuse into the ground. Back-fill compound shall not be mixed with any soil while pouring in the bore hole. Test Certificate as per as per IEC : 62561-7 for Back-fill compound shall be submitted along with material. (c) Earth termination clamp either of gun metal / tinned copper or tinned brass for termination both round and flat conductors of required size(d) Supply of environmentally friendly rust proof heavy duty weather proof High Density Polyethylene (HDPE) Earth Pit Chamber. |
| 11 | NOTES APPLICABLE TO SERIAL ITEM 7: (a) Earth resistance should be less than three Ohm. In case the test results are not found below three Ohm, complete earthing shall be redone by contractor without any extra cost to Govt .(b) Contractor shall submit all test certificates as NABL accredited laboratory.MAKE:- JEF / ABB FURSE / TRUE POWER / CAPE |
| 12 | Supply and fix in repair Cable with copper conductor size 16 Sqmm PVC round sheathed (flexible) industrial cable single core green colour as earth continuity conductor suitable to connect with item No 5 above with suitable copper lugs and accessories complete all specified and directed. |
| 13 | Supply and fixing in repair Earth continuity conductor or main earthing lead fixed to wall on batten or recess, porcelain insulator or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required complete all as specified in SSR Part-I specifications of following sizes:- |
| 14 | Copper strip of size 20mm x3mm. |
| 15 | GI strip of size 25mm x4mm. |
| 16 | GI strip of size 32mm x6mm. |
| 17 | Aluminium strip of size 25mm x3.15mm. |
| 18 | NOTES for item No. 9.01 to 9.04: (a) Strips to be fixed with porcelain/polymer insulators at the intervals of 0.6 metre so as not to be in electrical contact with building structure.(b) Brazing shall be done on both sides (overlapping) at all joints except test point. |
| 19 | S&F if repair Earth continuity conductor galvanised iron main earth lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles/DBs or any other directed location complete all as specified and directed of following sizes: - |
| 20 | 4 mm dia. |
| 21 | 6 mm dia. |
| 22 | S&F in repair Air termination, single pointed aluminium rod 12 mm dia 300 mm long , complete all as specified and directed. |
| 23 | S&F in repair Air termination, single pointed copper rod 12 mm dia 300 mm long, complete all as specified and directed. |
| 24 | Magnesium sulphate chemical (quantity recommended by Engineer-in-Charge) pouring into earth pit through watering pipe by mixing the same with water to maintain earth resistance value of earthing within permissible limit complete all as specified and directed |
| 25 | M&L for reinforced cement concrete, type A-1 (1:1½:3), using 20 mm graded stone aggregates as in precast earth pit of size 550mm x 550mmx 600 mm reinforced with cover 40mm thick XPM weighing not less than 4 kg/Sq.m and fixed including dismantling complete all as specified and directed. |
| 26 | S&F in repair medium grade GI tubes, with necessary GI fittings laid in floors / wall complete all as specified and directed of follwings sizes - |
| 27 | 20 mm bore |
| 28 | 25 mm bore |
| 29 | 40 mm bore |
| 30 | S&F in repair cast iron funnel of size 25mm dia for earthing complete all as specified and directed. |
| 31 | S&F in repair rigid non metallic, PVC conduit, 20 mm bore, medium grade, ISI marked, inclusive of all fittings (such as junction boxes, bends, elbows, tees, reducers, bell mouth tube ends) and all fixing accessories such as couplers, lock nuts, saddles, pipe hook etc. for sub main wiring and the like complete all as specified and directed. |
| 32 | Supply and fix in repair GI pipe 25mm bore light grade (ISI marked), cut piece of 1.0 metre length or as directed by Engineer-in-Charge, fixed vertically with bottom end embedded in & including cast-in situ PCC (1:2:4) block of size 20cmx20cmx15cm including use and waste necessary fair finish form work, and other end (at top) fixed to air termination rod with necessary bolts, nuts etc as required, complete all as specified and directed. |
| 33 | Supply and fix in repair GI pipe 40mm bore light grade (ISI marked), cut piece of 1.0 metre length or as directed by Engineer-in-Charge, fixed vertically with bottom end embeded in & including cast-insitu PCC (1:2:4) block of size 20cmx20cmx15cm including use and waste necessary fair finish form work, and other end (at top) fixed to air termination rod with necessary bolts, nuts etc as required, complete all as specified and directed. |
| 34 | Supply and fix in repair GI pipe 50mm bore light grade (ISI marked), cut piece of 1.0 metre length or as directed by Engineer-in-Charge, fixed vertically with bottom end embeded in & including cast-insitu PCC (1:2:4) block of size 20cmx20cmx15cm including use and waste necessary fair finish form work, and other end (at top) fixed to air termination rod with necessary bolts, nuts etc as required, complete all as specified and directed. |
| 35 | S&F in repair test point terminal block made of gun metal or phosphorus bronze or copper, size 75mmx75mmx25mm, drilled and screwed including 3 nos. 8mm dia 25mm long hexagonal head screws, complete all as specified and directed. |
| 36 | Material & labour for brazing/ soldering on both sides (over lapping) to the copper strip of size 20mmx3mm as earthing lead, including dismantling the old from the existing position/ equipment without disturbing the functional requirements of the equipments, and reconnecting, after repair/brazing, complete all as specified and directed. |
| 37 | S&F in repair porcelain strip holder on wall and roof of suitable size complete all as specified and directed. |
| 38 | M&L for earth indicators made of 2 mm thick MS sheet of oval/Triangular/Rectangular shape of size 30 cm x 20 cm duly fixed over MS angle iron of size 25 x 25 x 3mm in size 0.9 metre in total length and 30 cm embedded in below ground level and 60 cm above ground level and angle iron embedded in cement concrete of 1:3:6 type C-2, of size 30 cm x 30 cm x 30 cm painting the steel surfaces with two coats of red paint for chemical earth pits and yellow paint for Lightening Arrester( LA), Power Supply(PS) earth pits over coat of red oxide and writing the earth pit indication in alphabets with black colour of one inch height and marking all as per the direction of Engr -in-Charge and including necessary earth work and returning filling and removal etc including dismntling old complete all as specified and directed. |
| 39 | M & L for recharging of normal earth pits by excavating the earth at a radius of 600mm from the centre from the earth pit and at a depth of 900mm after removing the earth chambers and accessories carefully and keeping aside for reuse including adding and spreading Charcoal 10 Kg and Salt 10 Kg in 75mm layers each at ground level and watering, re-fixing the earth chambers and accessories after allowing the soil to settle down complete all as specified and directed. |
| 40 | M&L for Testing of existing earthing resistance with suitable digital Earth tester and recording the readings obtained complete all as specified and directed.Note: (a) Value of earth resistance should be less than 3 Ohms for equipment’s earthing and less than 5 ohms for power supply and less than 10 ohms for LA.(b) A register will be maintained for building/establishment/ section wise (for Equipment earthing, LA, Power etc) duly obtaining the sign of the user. |
| 41 | Supply only Salt complete all as specified. |
| 42 | Note : (a) Repairing/replacing/fixing work shall be carried out upto 20 mtr height on hangars/tech buildings/Over Head Water Tanks. (b) Necessary T&P such as Ladder/Crane and like as required for execution of work shall be borne by the contractor. (c) The rate quoted by the contractor deemed to be inclusive of Note (a) & (b) above. |
| 43 | Note : Amount of credit for retrieved materials is mentioned in Sch 'A' Section-II of tender documents in pdf form which will be deducted while acceptance of tender offline. Please Enable Macros to View BoQ information |
