Some transmission line tests

IN THE MONTH of October, 1919, Mr. J. H. Foote of the Consumers Power Co., and the writer made a series of tests on the 30-cycle 140,000-volt system of that company in western Michigan. A summary of the tests for corona loss has been published.¹ There are some interesting features of these tests which were not mentioned in the previous paper, as their explanation was not clear at that time. The questions in regard to these features have now been pretty well cleared up and they will be discussed´ briefly in this paper.