Abridgment of surge voltage investigation on the 132-kv. transmission lines of the American gas and electric company

Data on the surge voltage investigation, carried out under the auspices of the Subcommittee on Lightning, on one of the 132-kv. lines of the American Gas and Electric Company during 1928, are presented. Most of the surges have been segregated as to cause, and plotted in summary form for more convenient use. The magnitude and character of recorded surges are discussed, and the conclusions drawn from data presented. Information on voltage surges due to lightning, switching, trip-outs, and unknown causes, are presented, as well as records of lightning arrester discharge currents, voltages across choke coils, and on the ground wire. This paper is presented to make available to the engineering profession at this time some of the information already obtained, pending the complete report of the Subcommittee on Lightning. As experimental work is still being done in the field during 1928, anything approaching a complete report cannot be made until next year.