bids are invited for facilities at rajahmundry airport 100ka three phase type 1 plus 2 spd , 63a three phase series filter , 40a three phase series filter , 40ka single phase type 2 spd , n type rf coaxial spd for dvor , n type rf coaxial spd for dme , krone type telephone line surge protector , data port rj 45 surge protector , conventional earthing system , 16 sq mm pvc insulated flexible copper wire , 35 sq mm pvc insulated flexible copper wire , 50 sq mm pvc insulated flexible copper wire with insulators and necessary accessories , main equipotential earth bus bar 300mmx50mmx6mm with weather proof box, insulators and necessary accessories , sub equipotential earth bus bar 300mmx25mmx6mm with insulators and necessary accessories , transient earth bond with necessary accessories , 2 inch cpvc pipe with necessary accessories , submission of project document and imparting training to cns officials , installation testing and commissioning with 5 years warranty of above mentioned items. sitc of surge protection and earthing systems for cns atm total quantity : 352