American gas and electric 330-kv system equipment

BUILDING A 330-kv transmission system meant going beyond the existing frontiers and establishing equipment and design principles on an entirely new basis. To go about this job, all available information was gathered together and to supplement this information the tests at the Tidd Plant of The Ohio Power Company were initiated and carried out over a long period of years so that there would be as few questions unsettled as possible when the actual work came to be done.