Abstract

A large number of porcelain type substation apparatuses were damaged when the Off-Miyagi Earthquake attacked the nor t hern part of Japan on 12 June, 1978 . Careful studies of some of this damaged equipment clearly s howed the influence of the tension between two neighboring apparatuses through their connecting leads . The influence of the leads has been studied theoretically and also experimentarily by t he shaking table tests on full size equipment . The results of the study and a proposal for the design of lead connections a r e p r esen ted in the paper .

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