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Clinch Valley News
Tazewell, Jeffersonville, Tazewell County, Virginia
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The Appalachian Electric Power Company participates in an experiment with American Gas and Electric Service Corporation and electrical manufacturers to test transmitting electricity at 500,000 volts using newly designed equipment, including 37-foot transformers and a lightning protector, on a three-mile test line.
Merged-components note: Merged title, text, and accompanying images of the article on high-voltage transmission line test equipment, based on sequential reading order and contextual description of images in text.
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The photographs below show some of the newly designed test equipment that is being used in an experiment in which the Appalachian Electric Power Company is participating which may make it possible to transmit electric energy at higher voltages with greater economy.
In the transmission of electric energy and particularly when large blocks are transmitted losses are reduced proportionately as the voltage is increased. At present, the highest operating pressure anywhere in this country is 287,000 volts. At this voltage it is difficult to control the terrific forces that are present and highly insulated equipment is necessary to keep the energy confined to its proper place.
The American Gas and Electric Service Corporation is collaborating with the Appalachian Electric Power Company, one of its affiliates, together with a group of electrical manufacturers in this experiment, involving the construction of three miles of full scale test line, to determine the feasibility of transmitting electric energy at voltages as high as 500,000 volts.
LEFT: Three transformers for the world's most powerful transmission line are shown in the test pit of the Westinghouse Electric Corporation at Sharon, Pennsylvania, just before shipment. Each transformer stands 37 feet high and is specially constructed to withstand the 500,000 volts to which it will be subjected.
BELOW : The lightning "Straight Jacket" which is designed to intercept lightning surges which might strike the half million volt test line.
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Sharon, Pennsylvania
Story Details
Experiment to test 500,000-volt transmission line using special transformers and lightning protection equipment built by Westinghouse for Appalachian Electric Power Company and collaborators.