Lightning investigations at 115/230-kv stations

IN 1947 THE Hydro-Electric Power Commission of Ontario instigated a survey at its Burlington and Leaside 115/230-kv transformer stations to determine the effectiveness of the lightning protection provided by overhead ground wires, used to protect the stations from direct lightning strokes, and by co-ordinating gaps, used in place of the more conventional lightning arresters to protect the power transformers from severe overvoltages.