0 votes 0 votes The most commonly used relay, for the protection of an alternator against loss of excitation, is offset Mho relay. over current relay. differential relay. Buchholz relay. new gate2022-ee + – Arjun asked Feb 15, 2022 • edited Feb 18, 2022 by soujanyareddy13 Arjun 15.9k points answer comment Share See all 0 reply Please log in or register to add a comment.