Word: cablese
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Dates: during 1920-1929
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Great improvements have been made in certain classes of insulating materials during the past few years. As a result, it has been possible to design overhead transmission lines to operate at 220,000 volts. Transformers are built to operate up to 500,000 volts. Furthermore, when lines, transformers, and generators...
Up to the present time, there does not seem to be any method for determining from preliminary test whether a cable will stand up in service or not. In other words, the cable is the weakest link in the modern power system. Moreover, cables have not been designed to operate...
The primary cause of cables breaking down in service is due to the fact that small voids or air spaces are formed within the paper insulation. With present methods of manufacture, these voids appear to be inevitable. When such voids form, a minute electric discharge takes place within the void...
We have already determined some of the essential electrical properties of these ionized gas films. With this information, we have been able to determine from simple power measurements on a cable just how much power is being lost as ionization in the destructive air films. Naturally, the life of the...
To avoid misquotation, President Coolidge cables his foreign affairs speeches in advance to American embassies, for U. S. diplomats to peruse and distribute to the foreign press. To Paris thus went the Coolidge farewell speech, in which was some careful research on foreign alliances. "He [Washington] warned us to beware...