The klydonograph and its application to surge investigations

Saratoga Springs, N. Y., June 26, 1925 D. W. Roper: One of the first things that is necessary in order to make improvements in power cables is to know what causes the failure. A paper on dielectric losses in relation to cable failures² presented before the Niagara Convention outlined one cause of failure and the method of determining when such failures occur. A study of the failures on the cable system in Chicago, however, indicated that only 40 per cent of the failures of the transmission cables could be accounted for on this basis, and we had to look elsewhere for the balance.