PROVN OF LIGHTENING ARRESTOR AT CERTAIN LOCATION AND IMPROVEMENT OF E/M INSTALLATION IN CERTAIN OTM AT AF STN TUGHLAKABAD UNDER GE (AF) TUGHLAKABAD

Amount

Supply and laying of synthetic Rubber insulation mat of 2 mm thick for voltage upto 3.3 KV for electrical purpose as per IS 15652-20006, (Superseding IS-5424) suitable for electrical shock safety of size 2 m x 1 m complete all as specified and directed by Engr-in-charge.

Supply, Installing, in replacement testing and commissioning factory made and tested LT Panel Indoor type, platform mounted, suitable for 415 Volts 3 Phase and neutral, 4 wire, 50Hz AC supply system. Shall be dust and vermin proof, protection class (IP-42) and made of 2.00 mm thick CRCA Sheet & suitable frame work/ support made out of 40 x 40 x 5 mm MS Angle, front opening type with space for cable entry from back side of the panel, with proper ferrule & cable gland, internal wiring with PVC insulated multistranded copper conductor FRLS cable of adequate size but not less than 1.5 Sqmm complete all as specified and directed by Engr-in-charge. The scope of work also comprising of the following:-

Supply, Installing, in replacement testing and commissioning factory made and tested LT Panel Indoor type, platform mounted, suitable for 415 Volts 3 Phase and neutral, 4 wire, 50Hz AC supply system. Shall be dust and vermin proof, protection class (IP-42) and made of 2.00 mm thick CRCA Sheet & suitable frame work/ support made out of 40 x 40 x 5 mm MS Angle, front and back side opening type with space for cable entry from back side of the panel, with proper ferrule & cable gland, internal wiring with PVC insulated multistranded copper conductor FRLS cable of adequate size but not less than 1.5 Sqmm complete all as specified and directed by Engr-in-charge. The scope of work also comprising of the following:-

Supply, Installing, in replacement testing and commissioning factory made and tested LT Panel outdoor type, platform mounted, suitable for 415 Volts 3 Phase and neutral, 4 wire, 50Hz AC supply system. Shall be dust and vermin proof, protection class (IP-42) and made of 2.00 mm thick CRCA Sheet & suitable frame work/ support made out of 40 x 40 x 5 mm MS Angle, front opening type with space for cable entry from back side of the panel, with proper ferrule & cable gland, internal wiring with PVC insulated multistranded copper conductor FRLS cable of adequate size but not less than 1.5 Sqmm complete all as specified and directed by Engr-in-charge. Note: The scope of work also comprising of the following including PCC work :-

Taking out old underground/duct cable of any size and any core including all fittings complete all as specified and directed by Engr-in-charge.

M&L for XLPE insulated, armoured heavy duty electric cable with aluminium conductor of 1100 volts grade, cross-sectional area complete all as specified and directed by Engr-in-charge:-

300 Sqmm 3.5 core.

120 Sqmm 3.5 core

35 Sqmm 3.5 core.

25 Sqmm 4 core.

16 Sqmm 4 core.

Taking down old unserviceable LT feeder panel after disconnecting cable and necessary fastening elements with safety complete all as specified and directed by Engr-in-charge.

Supply, Installing, in replacement testing and commissioning factory made and tested LT Panel Indoor type, platform mounted, suitable for 415 Volts 3 Phase and neutral, 4 wire, 50Hz AC supply system. Shall be dust and vermin proof, protection class (IP-42) and made of 2.00 mm thick CRCA Sheet & suitable frame work/ support made out of 40 x 40 x 5 mm MS Angle, front opening type with space for cable entry from back side of the panel, with proper ferrule & cable gland, internal wiring with PVC insulated multistranded copper conductor FRLS cable of adequate size but not less than 1.5 Sqmm complete all as specified and directed by Engr-in-charge. Note:- The scope of work also comprising of the following:-

S&F MCCBs four pole thermal & magnetic release adjustable type with breaking capacity 36 KA including taking down unserviceable MCCB's and connecting, complete all as specified and directed by Engr-in-charge of following capacities :-

Supply and fixing of ON LOAD Change over switch front handle operated 415V 50hz four pole all open execution type in replacement of old unserviceable switches complete all as specified and directed by Engr-in-charge.

Excavation in trenches not exc. 1.5m wide and not exc 1.5m in depth and getting out in hard/dense soil for laying of cable trenches complete all as specified and directed by Engr-in-charge.

Returning filling in, including spreading, levelling, watering and well ramming in layer not exc 25cm complete all as specified and directed by Engr-in-charge.

Removal of surplus soil (excavated soil) to distance not exceeding 50m and depositing where directed at a level not exc 1.5m above the starting point and complete all as specified and directed by Engr-in-charge.

M&L for sand cushioning (dry sand) to underground cable for cable protection laid in trenches / in existing cable ducts complete all as specified and directed by Engr-in-charge. Note: For payment point of view, compacted thickness of sand shall be measured.

M&L for brick, subclass 'B' well burnt, of size 230x115x75 mm laid dry flat in trenches for protection of cable over LT cable, complete all as specified and directed by Engr-in-charge.

M&L for Earthing complete with galvanised steel earth plate electrode 60x60cmx6mm thick, buried directly in ground earth pit not less than 2.25mtrs deep below ground level) with top edge of the plate not less than 1.5mtrs below normal ground level, connected to galvanised iron strip 32x6mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified including taking out the unserviceable earthing complete and testing on completion complete all as specified and directed by Engr-in-charge.

M&L for earthing with electrode should be 2 No’s Copper Plate of size 90cmx60cmx5mm inter connected with 50 X 6 mm copper strip of length 1.5 mtrs and in center shall be 50 X 6 mm copper strip of 3 meter with suitable brass nut bolts and brazing for lower resistance. Alternate layers of Soil & Curec+ (03 kgs x 5 bag); Maintenance Free Earthing System to give Earthing Resistance value of ≤ 1Ω. The soil shall be mixed with backfill CURENITE (25-kgs x 5 bags). Copper Electrode’s should be solid rod of dia Mini 18 mm outer dia and surrounded with highly conductive and non corrosive nature (pH value certified) & covered with Poly plastic Earth Pit cover in and including construction of PCC earthing pit with earthing pit cover specified colour coding GI pipe light grade 40mm dia for protection of earth electrode rode complete all as specified and directed by Engr-in-charge.

Supply and install Lightning arresters expulsion type complete with all fittings, 30 kilo amp discharge capacity, distribution class complete all as specified and directed by Engr-in-charge.

Supply and Installation of 04 mtrs pole to be erected with supporting mast and guy wires for support to Lightning Arrester complete with all installation arrangements complete all as specified and directed by Engr-in-charge.

M&L for PCC 1:2:4 type B1 using 20mm grade stone aggregate as in PCC block for air termination including necessary form work complete all as specified and directed by Engr-in-charge.

M&L for GI brazing (welding) at site to connect loop GI earthing strip of any size after tighten by nut, bolt, washer, checknuts complete all as specified and directed by Engr-in-charge. Note : GI brazing should be done upto 20 mtr height. Cost of necessary tool/plant and ladder required for working upto 20 mtr height shall be deemed to be included in the rate quoted.

M&L for copper brazing (welding) at site to connect loop copper earthing strip of any size after tighten by nut, bolt, washer, checknuts of brass, complete all as specified and directed by Engr-in-charge. Note : Copper brazing should be done upto 20 mtr height. Rate of necessary tool/plant and ladder required for working upto 20 mtr height shall be deemed to be included in the rate quoted.

M&L for Low density poly ethylene pipes (LDPE) of pressure rating 6 kg/ cm2 50 mm dia laid in trenches /wall/floor complete all as specified and directed by Engr-in-charge.

Supply installation, testing and commissioning of maintenance free earthing . The earthing set shall comprise of :- (a) 1 No of copper bonded rod of diameter 17.2 mm and length of 10 feet UL approved with 25 KA current discharge test from CPRI. The material shall below carbon high tensile copper bonded rods with 99.9 % of copper on the surface. The UL approval certificate shall be provided. (b) The electrode shall be installed in a 100mm dia 3000mm deep augured bore hole. The augured bore hole shall be filled with highly conductive and eco friendly ground enhancing compound as per IEC 62561-7 shall be not less than 30kg per pit. (c) 1 No. of copper bus bar of size 25 x 6 x 150 mm should be exothermic welded with copper bonded rod 17.2 mm dia x 3 mtr length. (d) 1 No. of PVC Pit cover for covering of earthing. (e) Exothermic connection of 25x6x150 mm busbar to 35 Sqmm copper cable. (f) 35 Sq mm PVC insulated copper cable for interconnection of earthing and equipment. Quoted rate shall deemed to include the cost of copper cable 35 Sqmm upto 7.5m with 25mm light grade GI protection pipe.

S&F Single pointed air termination aluminium rod 12 mm dia 300 mm long complete all as specified and directed by Engr-in-charge.

S&F aluminium strip 25 x 3 complete with saddles and fixing screws for roof conductors down conductors complete all as specified and directed by Engr-in-charge.

S&F copper strip 32x6mm with saddles and fixing screws etc for roof conductors and down conductors above ground complete all as specified and directed by Engr-in-charge.

S&F 32x6 mm GI strip in short pieces on surface or in recess for all interconnecting, complete all as specified and directed by Engr-in-charge.

S&F copper strip 20 x 3.15mm with saddles and fixing screws etc for roof conductors and down conductors above ground complete all as specified and directed by Engr-in-charge.

S&F porcelain insulator 15 BMD type with nut bolts and screws for fixing copper strips on wall etc complete all as specified and directed by Engr-in-charge.

S&F test terminal block made out of gun metal or phosphrous bronze size 150x 150 x 75 mm depth cutting upper and lower portion for incoming & out going including double insulators two coat of synthetic enamel paint complete all as specified and directed by Engr-in-charge.

S&F of XLPE armourd cable of size 70 Sq mm copper cable multistranded complete all as specified and directed by Engr-in-Charge.

M&L for PCC 1:2:4 type B-1 using 20 mm graded stone aggregate as in foundation complete all as specified and directed by Engr-in-charge.

Deepak Electricals (BID ID -3099475)

Neeraj Enterprises (BID ID -3104800)