Providing Lightning Protection system at EKNM Govt College Elerithattu

Amount

Lightning

od6467/2019_2020 : Providing & fixing of 8mm solid aluminium alloy round conductor with necessary holders @ required interval as specified below: Meets the requirement of (IS/IEC 62305) : semi-hard (E-AlMgSiO5 ) with 50 sq.mm cross sectional area.Make: Cape or Equivalent Down Conductor Polyamide Holder @ every 0.5 meters

od6468/2019_2020 : Providing & fixing of folding clamp for solar panels (up to 20mm thickness of the metal frame): Folding clamp for metal frame thickness up to 5mm. For conductor routing transverse and longitudinal to plate. Made of stainless steel SS 304 grade , Conforms to the requirements according to (IS/IEC 62305). Make: Cape or Equivalent

od6469/2019_2020 : Providing and fixing of test joint suitable for 10mm dia copper bonded solid steel round conductor with 100 microns of copper bonding (if pure copper conductor 25x3 mm solid tape also can be used) and 8mm dia solid round aluminium conductor made of stainless steel SS 304 grade. Conforms to the requirements according to (IS/IEC 62305).with an outdoor glass-fibre reinforced polycarbonate enclosure having minimum inner dimension of 75mm x 75 mm x 50 mm. Make: Cape or Equivalent

od6470/2019_2020 : Providing and laying copper coated steel solid round conductor 10mm diameter from earth electrode directly in ground as required. copper coated steel, high corrosion resistant (if pure copper conductor 25x3mm solid tape also can be used). Meets the requirement of (IS/IEC 62305) copper coating thickness of 100microns Should be tested and use exclusively for lightning protection earthing system and ring equipotential bonding. Make: Cape or Equivalent

od6471/2019_2020 : Providing and fixing of Cross connector / T connector for 10mm round copper bonded steel conductor having 100 microns or 20x3mm pure solid tape copper conductor as per IS/IEC 62305 made of SS 304 grade. Make: Cape

od6472/2019_2020 : Providing and fixing of Plastic Corrosion Protection strip: Approx 1.1 mm thick. Width 50mm. Made of petrolatumcoated chemical fibre fabric. Make: Cape or Equivalent

od6473/2019_2020 : Providing and fixing of Heavy duty PVC conduit of 20mm 2.5m long ducts including the fastening clips. Make: Sintex, Kelachandra/equivalent

od6474/2019_2020 : Providing and fixing of maintenance free Earthing system comprises of molecularly bonded copper of 99.9% purity on low carbon steel of 3m length , having a diameter of 20mm with copper bonding thickness of 250 microns with selfcoupling peg & bore arrangement with fault current withstand capability of 20 KA rms value for 1 second and I peak of 50 KA. Universal Clamp made of SS 304 for clamping. Impact point on the bottom rod for easy insertion. Earth enhancing mineral compound is used for improving the soil conductivity. The material shall be mineral inert to sub soil and shall not pollute the environment and non corrosive to earth rod. The material should have a resistivity less than 0.2 Ωm. It should be free from hazardous substances The mineral compound is required to have minimum 20 Kg of the total composite. If using chemical compound min 37.5 Kg is required. Polypropylene & Polyethylene Earth electrode inspection chamber with heavy duty cover should be used to cover the Earth Rod. The dimension shall be 300mmx 300mm with a weight bearing capacity of 5KN. Make: Cape or Equivalent

od161558/2019_2020 : Surge Protection Devices for Main Panel Large Building ( Three Phase): Surge Protection Device Class B & Class C/ Class 1 & Class 2 Tested as per IEC 61643 Part 11:2011 . Nominal voltage -230V 50/60Hz, MCOV of 275 V , Total Impulse current-100 KA (10/350µ sec) & Total Max Discharge current 400KA (8/20µ sec), Voltage protection level <1.3 kV & Residual Voltage @ 5 kA(8/20) <0.8 kV . The Surge Protection Devices have TOV withstand for 120 Min : 438 V and with out Follow Current & Leakage Current. Protective Elements are High Energy MOV & GDT & the Protection Modes for : L & N to PE . The connections (Three Lines & Neutral) should be directly connected to Protective Earth Terminal for better response time. Short- Circuit Current rating (Isccr) – 25 kA/50 Hz . Back up fuse required more than 250AgG/gL. Health Status Indication required in all catridge. Total Response time <25 nano sec . Make : Raycap Model: Safeblock 100/275 (4+0) or Equivalent including supply and providing suitable size enclosure

od161560/2019_2020 : Surge Protection Devices For All DB’s: (Single Phase) This panel should include Surge Protection Device Class C/ Class 2 Tested as per IEC 61643 Part 11:2011 . Nominal voltage -230V 50/60Hz, MCOV of 275 V , & Total Max Discharge current 80 KA (8/20µ sec), Voltage protection level <1.5 kV & Residual Voltage @ 5 kA(8/20) <1.1 kV . The Surge Protection Devices should have TOV withstand for 120 Min : 438 V . Protective Elements are MOV & GDT & the Protection Modes for : L & N to PE . The connections (Single Lines & Neutral) should be directly connected to Protective Earth Terminal for better response time. Back up fuse required more than 125 AgG/gL. Health Status Indication required in all catridge . Total Response time <25 nano sec . Make : Raycap Model:SAFETC C 80/275 (2+0) i) To install at - nos. ii) To install at - nos.or Equivalent

od161571/2019_2020 : Surge Protection Device for single Telephone Line. Surge Protection Device shall be tested as per IEC 61643-21 with MCOV 175V DC. Maximum operating current shall be 150mA. Nominal discharge current (8/20µs) shall be 2.5kA & Maximum discharge current (8/20µs) shall be 5kA. Voltage protection level at nominal discharge current for L-L shall be ≤ 300V & for L-G shall be ≤ 1000V. Frequency range upto 10MHz. L-L response time shall be less than 5nano sec & L-G response time shall be less than 100 nano sec. Input / Output connection terminal shall be suitable for RJ11/RJ45. Degree of protection shall be of IP20. Make: Raycap or Equivalent

2.16 : Supplying and fixing DP sheet steel enclosure on surface/ recess along with 25/32amps 240 volts "C" curve DP MCB complete with connections, testing and commissioning etc. as required.

od161573/2019_2020 : SAFTEC T2-300-3+1-R-IK59.0199

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