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Supply of Lightening Arrestor Supply Of Metal Oxide Lightning Arresterla Heavy Duty Station Class Metal Oxide Gapless Lightning Arrester Morester Type Stn-D Type Heavy Duty Station Class Metal Oxide Gaples S Lightning Arrester Morester Type Stn-D Reference Standard Iec 99-4 Of 2006/Is 3070 Part3 1993 No Of Unit One Rated Voltage 30Kv Nominal Discharge Current With Class 10Ka Class 1 Reference Current 2 Ma Pea K Reference Voltage Greater Than Rated Arrester Voltage At Reference Leakage Current At Cov Less Than 0.8 Ma M Ax Continuos Operating Voltage 24Kv Rms Maximum Residual Voltage For Discharge Current Of 8/20 Micro Sec Wav E 5000 Amps 85Kvpeak 10000 Amps 90Kvpeak 20000 Amps 100Kvpeak Max Steep Front Residual Voltage At 10 Ka With One Micro Sec Rise Time 100Kvpeak Max Switching Impulse Residual Voltage With 40/80 Us Wave At 1000 A Mps 80Kvpeak Energy Dissipation Capability Form 3 Seqential Shots 6 Kj /Kv High Current 4/10 Us Test Value 100Ka Peak Long Duration Current Tests Current Peak Virtual Duration As Per Discharge Class 2 Of Iec -99-4 Table -4 200 0 Micro Sec Pressure Relief Class Class A Short Circuit Current Capability 40Ka Rms Partial Discharge At 1.05 Time S Mcov Less Than 10Pc 0.1 Second 34.5Ka Rms 0.1 Second 33.5Ka Rms 10.0 Second 31.5Ka Rmsinsulation Withst And Tests On Arrester Housing One Minute 50 Hz Dry & Wet 95Ka Rms Lightning Impulse Voltage Withstand 175Ka R Ms Creepage Distance Mm 900 Nominal Weight Of Complete Unit 11?10% Kgs Height Of Complete Unit From Bas E To The Line Side Refer Drg No 2500300 Minimum Recommended Contre To Centre Spacing Between Arresters500 Mm Clearance Required Form Ground Equipment At Various Heights Of Arrester 400 Mm Earthing Arrangement Pro Vided For Earthing Side Of Arrester Ground Terminal Bracket Provided For Connecting Earth Strip Drg No 6220151 M Ounting Flange Dimensional Details End Casting 3 Holes 11Mm 120 Deg Apart At 165Mm Pcd Rated Frequency 50 Hz ? 5% Insulation Material Porcelani Specific Creepage Distance 25Mm/Kv Altitude Above Sea Level 1000/ Mtrs. From Msl Minimum Humidity 85% Markings 99-4 Of 2006/Is 3070 Part3 1993 Earthing Switch Operating M Echanism Independent Manual Drive, Mechanically Interlocked With Main Blades Attached As Per Annexure-A Warranty Period: 12 Months After The Date Of Delivery
