What are the types of relays used in station? All Questions › Category: Switchgear And Protection › What are the types of relays used in station? 0 Vote Up Vote Down Chetan Shidling Staff asked 5 years ago I need short information. 1 Answers 0 Vote Up Vote Down Ashok answered 5 years ago 1. Overvoltage relay 2.Undervoltage relay 3.Earth fault relay 4.instanteous relay 5.Master relay These are the major relay based on HT panel. Chetan Shidling replied 5 years ago Thanks for information.