PROVIDING AND FIXING OF LIGHTNING PROTECTION SYSTEM AT SSBH KOTA

SITC of Strip in Pipe Earthing using hot-dip galvanized 'B' class G.I. pipe, as secondary conductor. The system shall incorporate a crystalline conductive compound between the primary and secondary conductors to enhance conductivity and long-term stability. of following size and length and as per point mentioned (a), (b), [c), (d), (e) (f) as below (a) Bore a hole of dia. 150 mm of required length, Place the rod in the centre of Hole (b)Earth enhancing compound to ensure the moisture content and electrical conductivity, 30 kg for 3000 mm. 20 Kg. for 2000 mm The compound shall be tested form NABL accredited lab for low resistivity (less than 0.12 Ohm - meter) & high conductivity in nature with carbon as a major content in accordance with IEC 62561-7 © Connect the Strip Terminal (110 mm long) with copper Strip/Conductor/Wire with suitable clamp made from tinned copper and SS 304 Bolt (d) Place Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm. (e) Testing of earth resistance for value of 5 ohms or less as required. (f) Test certificates for confirming above standards from OEM is mandatory. Outer Pipe - 56 mm dia GI pipe , Inner Conductor- GI strip 25x3 mm Length 3meter. Terminal 40x5 mm GI.

Supply & Laying following size earth strip in horizontal or vertical run in surface by means of Earth strip DMC Insulator including riveting/ soldering/ welding, Jointing shall be done by overlapping double the width of strip and with 2 set of Brass (for Cu strip) / GI (for GI Strip) nut bolt & spring washer spaced at 50cm making connection etc. as required. 25mm x 3mm G.I. ( Hot Dipped ) Strip

S & F of Earth Bar with Disconnecting link Made out from 50 mm x 6 mm copper purity purity >95% /GI strip pre fitted on epoxy powder coated metal base mounted on hexagonal SMC Insulators of following Size. 400 mm , 6 Way GI

Providing & Making of Exothermic joint in Tee / Square / Straight through joint in Strip for permanently bonding of copper to copper or copper to GI including required exothermic jointing kit comprising of graphite mould, weld powder, tools etc. as required.

Supply, installation, and testing of an Early Streamer Emission (ESE) Air Terminal, designed and tested in accordance with NFC 17-102 standards, with Delta T ( Initiation Advance ) time tested and certified by an ILAC-accredited high-voltage test laboratory. The air terminal shall be constructed from corrosion-resistant materials to ensure durability and long-term performance. It shall be installed at the highest point of the structure and mounted on a mast of minimum 5.5 meters or as determined by the initiation advance time (ΔT) calculations, ensuring the required protection radius. The protection radius shall be determined as per NFC 17-102, based on the level of risk protection required (Levels I to IV), with proper Earthings integration for effective lightning dissipation. ES-45 Triggering Advance Time (ΔT) -45µs, Protection Radius (meters) as per Highest Risk 61 Mtr.

Supply, fabrication, and installation of a galvanized iron (GI) pipe support structure ( Lightning Mast ) with a 350 mm × 350 mm base plate and 10 mm thickness for secure mounting. The mast shall support the ESE air terminal and include provisions for a guy wire clamping system to ensure stability. It shall provide a secure arrangement for fixing the air terminal and have appropriate termination point / arrangement for connection to the downconductor. Total Mast height : 5-7.5 meter

SS 304 test joint with Polycarbonate enclosure with copper flat with 4 holes of 8/10 mm dia to connect round conductor

SS 304 Clamp to join Vertical Air terminal and 25 mm x 3 mm flat conductor

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