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| 1 | S&F for air termination single pointed, copper rod 12mm dia and 300 mm long fixed on galvanised iron pipes with copper/ aluminium/ GI strip for earth conductivity to ground complete all as specified anddirected. |
| 2 | S&F for copper strip 20mm x 3mmwith fixing screws for conductors/ earth lead including brazing and nut bolts jointing at all joints for building/ equipment laid through pipe/ trench/ surface including insulator complete all as specified anddirected. |
| 3 | Test point terminal box of size 200 x 100 x 100 mm made out of 2 mm thick hot dip galvanised sheet drilled and screwed including 6 Nos 15 mm long hexagonal head screws complete with test point terminal block made out of Gun metal or Phosphorus Bronze size 75 x 75 x 25 mm drilled and screwed including 3 Nos 8 mm dia 25 mm long hexagonal head screws etc complete all as specified anddirected. |
| 4 | S&F for GI protection pipe of 40 mm dia light grade for cable protection including all fittings laid in trenches or fixed on pole/ walls/ laid in floor with mild steel clamps, bolts, nuts and washers complete all as specified anddirected. |
| 5 | M&L for earthing complete with copper plate 600mm x 600mm x 3.15 mm thick electrode and 20mm x 3mm copper strip as earthing lead burried directly in ground vertically (earth pit not less than 2.25mtr deep below ground level) with top edge of the plate not less than 1.5mtr below normal ground level, the earth plate surrounded by adequate quantity of charcoal dust and common salt to a packed thickness of 15 cm on all sides connected to copper strip 20 x 3mm as earth lead by means of tinned copper/ brass bolts, nuts, check nuts and washers (including brazing) connected to main switch board / panel/ test point at the other including necessary earth work in any type of soil, returning filling in and removal of surplus soil, concrete pit in PCC (1:3:6) type C1, pre cast RCC 1:2:4 type BI cover slab 54cm x 54cm x 5cm reinforce with 8mm dia bar TMT @150mm centre to centre both ways with one handle for lifting made out 8mm dia MS bar with wire mesh funnel, 20mm GI tubing medium grade for watering and 40mm GI tubing light grade for protection, test point, testing on completion all as shown in Electrical Plate No 3 of SSR Part-I complete all as specified and directed. |
| 6 | M&L for study of earth/soil resistivity (tomographic survey of soil) Conducting earth resistivity test using earth tester to find out the resistivity of the plot and to obtain polar resistivity curve and avg resistivity in eight direction at AF Stn Dinjan and submitting the report with complete recommendation for specification of earthing to be considered complete all as specified anddirected. Note :- The unit rate also include for necessary excavation in any type of soil. |
| 7 | M&L for installation and testing of maintenance free earthing complete with earth electrode as per IS 3043 or latest tested for 254 micron copper bonded low carbon steel pipe of 3 meter long , minimum 05 nos of electrode and maximum (as designed and approved under Phase-I) ,50 mm outer dia of electrode with 25x3 mm inner copper strip buried directly in ground and tapered at the bottom 175- 200 mm dia digging or auguring of earth to the required depth as approved tomographic survey report (received under Phase I above) and filled up in bottom with slurry minimum qty 50 Kg per electrode plain bentonite for moisture and then with earthing chemical as per design under Phase-I as per IS/ IEC-62561-7 of Balanced Ph and less than 0.2 Ohm Resistivity carbon based earth enhancing compound in slurry form and quantity as per design. An arrangement for connection of copper strip (25x3mm) to electrode connected by means of Universal Copper Ground Rod Clamp of size 135x35x3mm to the electrode, copper earth strip 20x3 mm connected by means of clamp, provision of HDPE pit cover with minimum 5KN load capacity chamber with cover including necessary excavation in any type of soil, returning filling in, removal of surplus soil complete all as specified anddirected. |
| 8 | Note:-(i) Earthing system shall be designed so as to achieve test result less than 1 Ohm depending upon the soil conditions for the minimum 5 Years under performance warranty.(ii) Copper strip to be extended upto the equipment and power room. It should be routed on the side wall of the underground duct fixed with ceramic/ porcelain/ PVC spacers and hot sleeves.(iii) Ready made HDPE pit chamber with cover having minimum load capacity 5 KN with connected items.(iv) Copper strip should be 20x3 mm and length upto 7.5 Mtr is deemed to be included in the item qouted rates.(v) The number of earthing electrode in each earthing pit shall be as per design carried out in tomographic survey. Any extra cost for universal number of pits as per design shall be deemed to be included in item quoted rate. |
| 9 | M&L for 20X3 mm copper strip for earthing connection to building,including PVC insulation shaddel for fixing in wall/ Roof/ Floor complete all as specified anddirected. |
| 10 | S&F for GI protection pipe of 40 mm dia light grade for cable protection including all fittings laid in trenches or fixed on pole/ walls/ laid in floor with mild steel clamps, bolts, nuts and washers complete all as specified anddirected. |
| 11 | M&L for taking down carefully fans with fan down rod of any length by disconnectingelectrical connections and fixing the same with new Anti suicide fan down rod 10 inch (off white color), hanging fan and making necessary electrical connection, testing fan for its smooth functioning. Anti suicide Fan rod shall manufactred with inbuild spring so as to approved by Govt of India MSME laboratory complete all as specified and directed. Make:- GOLD LIFE manufactured by safe solution, Mumbai, SAFEHALO. |
| 12 | M&L for taking down carefully fans with fan down rod of any length by disconnectingelectrical connections and fixing the same with new Anti suicide fan down rod 12 inch (off white color), hanging fan and making necessary electrical connection, testing fan for its smooth functioning. Anti suicide Fan rod shall manufactred with inbuild spring so as to approved by Govt of India MSME laboratory complete all as specified and directed. Make:- GOLD LIFE manufactured by safe solution, Mumbai, SAFEHALO. |
| 13 | M&L for taking down carefully fans with fan down rod of any length by disconnectingelectrical connections and fixing the same with new Anti suicide fan down rod 15 inch (off white color), hanging fan and making necessary electrical connection, testing fan for its smooth functioning. Anti suicide Fan rod shall manufactred with inbuild spring and approved by Govt of India MSME laboratory complete all as specified and directed. Make:- GOLD LIFE manufactured by safe solution, Mumbai, SAFEHALO. |
| 14 | M&L for installation and testing of maintenance free earthing marconite type complete with earth electrode as per IS 3043 or latest tested for 14 Nos of 254 micron copper bonded low carbon steel pipe of 3 meter long, 17.5 mm dia embedded marconite conductive of dia 85mm has resistivity of 0.001 Ohms, buried in ground, interconnecting copper bonded copper strip 25mm x 6mm embedded in marconite concrete 70 Sqmm for acheiving overall resistance value less than 1 Ohm.Riser-I & II are copper strip 25mm x 5mm with insulating sleeve and single core multi stranded copper wire 16 Sqmm earth busbar box with Bi-metal busbar.An arrangement for connection of copper strip (25 x 3mm) to rod connected by means of Universal copper ground rod clamp of size 135 x 135 x 3mm to the electrode, copper earth strip 25 x 3mm connected by means of clamp, provision of HDPE pit cover with minimum 5KN load capacity chamber with cover including necessary excavation in any tyoe of soil, returning filling in, removal of surplus soil complete all as specified anddirected. |
| 15 | Note:-(i) If required earth resistance values are not achieved then redo the same without any extra cost..(ii) Consistent performance/ warranty for more than 25 years without maintenance/ recharging of water.(iii) Copper strip to be extended upto the equipment and power room.It should be routed on the side wall of the underground duct fixed with ceramic/ porcelain/ PVC soacers and hot sleeves including unit quoted rate.(iv) Readymade HDPE pit chamber with cover having minimum load capacity 5 KN with connected items including unit quoted rare.Make : As approved by GE. |
| 16 | Material and labour laying well burnt old sizebricks, straight or curved on plan , laid flat with width equal to length of brick , laid dry over electric cable for protection all as specified. |
