Lightning protection of distribution transformers

Data on the results of lightning protection for distribution transformers on the system of the Georgia Power Company have been compiled, to determine the improvement resulting from changes which have been made, particularly the interconnection of the ground leads of the primary arrester with the transformer secondary neutral. The data indicate that such interconnection has not produced all the benefits expected. The experience with lightning protection is presented in an impartial manner, and without attempting to offer a solution of existing problems.