Power Systems Lab Microcontroller Based IDMT/DMT Type Over Current Relay Study Trainer Electromechanical type IDMT over current relay study trainer Micro controller based IDMT/DMT type over/under voltage relay study trainer Electro – mechanical type over voltage relay study trainer Electro – mechanical type under voltage relay study trainer Micro controller based IDMT/DMT type over/under frequency relay study trainer Micro controller based earth fault relay trainer Electro-mechanical type earth-fault relay study trainer Micro controller based reverse power relay study trainer Micro controller directional over current relay study trainer Micro controller based three phase differential relay study trainer (merz -price protection scheme) Micro controller based single phase differential relay study trainer (merz price protection scheme) 1 2