Tests at 500-kv station at chevilly

The 500-kv experimental station of chevilly, near Paris, France, has been built with a view to making a close study of the behavior of the lines to be used when building up the French 400-kv system. Present economic conditions in France do not favor the use of copper conductors, in consequence two solutions have been considered for the equipment of these lines: 1. Utilization of large diameter (1.58 to 1.97 inches) “expanded aluminum-cable steel-reinforced (ACSR)” conductors. 2. Use of a bundle of two conventional ACSR (1.04-inch-diameter) conductors, the total cross section of which is equal to the economic section.