Breakdown characteristics of sphere-sphere gap with HVAC Breakdown characteristics of sphere-sphere gap with HVDC Breakdown test of transformer oil Protection of generator by differential scheme Protection of transformer by Merz -Price Protection scheme Breakdown characteristics of Point-sphere gap with HVAC Breakdown characteristics of Point-sphere gap with HVDC Performance of DMT Characteristic of solid State Relay Field Mapping using Electrolytic tank Negative Sequence Relay Performance of IDMT Characteristic for microprocessor based over current relay Performance of IDMT Characteristic for microprocessor based under voltage relay