EHV SUBSTATIONS: Bus-configuration, All equipment of S/S & Introduction of GIS Substation. TRANSFORMERS: Transformers & Reactor, Reconditioning of old Transformers, Condenser Bushings, Concept of SFRA and KYT (Know your Transformer). RELAYS & PROTECTIONS: Concepts & description of various. Relays & Protection schemes including auto-reclosing etc, En-masse operation of Buchholz relays of Transformers due to Earth Quake