Supply And Installation Of Class B And Class C Indicative Type Surge Protection Device With Potential Free Contacts As Per Rdso Specification No. Rdso/Spn/165/2023 Dated 2 0.06.2024 And As Per Rdso Guidelines On Earthing, Bonding Surge And Lightning Protection S Ystem For S&T Installations Issued Vide Letter No. Rsdo-Sig0Spd(Proj)/1/2020 Dated 01.01.2025 [ Warranty Period: 30 Months After The Date Of Delivery ] ]