Type 1 and type 2 SPD : installation and rules

Type 1+2 and Type 1+2+3 surge protectors are heavy duty devices, designed to be installed at the origin of the AC installations equipped with LPS (Lightning Protection System). They are necessary to protect sensitive equipment connected to AC network against direct and indirect effects of lightning.
Type 2 surge protectors are designed to be installed at the service entrance of low voltage systems or close to sensitive equipment to protect against transient overvoltages.

[@kirankumaragatamudi3550]

We request you to advise the equipment with all required accessories to get complete LT Surge Protection to 400 KVA Transformer and 630 Amps ABB MCCB Incomer, pl reply at the earliest