logics , bill of materials , Technical risk assessment, FAT SAT of primary secondary equipment, Interlocks, Substation layouts, Power transformers, E3, RFQs, Trip matrix, Control Relay panels, Technical data sheets verification, Wiring or Termination diagrams, Disconnectors, CAD design tools, AIS GIS secondary designs, Protection principle SLD Schematics, Vendor Offer Evaluations, Instrument transformers, Voltage drop calculation, Cable Schedule, Earthing switches, Cable block diagram, Signal list