Gary E. Stemler - Vancouver WA Donald N. Scott - Vancouver WA
Assignee:
The United States of America as represented by the United States Department of Energy - Washington DC
International Classification:
H01B 1702 H01B 1734 H01B 1736
US Classification:
174 11R
Abstract:
A high voltage transmission line suspension insulator (18 or 22) which monitors its own dielectric integrity. A dielectric rod (10) has one larger diameter end fitting attachable to a transmission line and another larger diameter end fitting attachable to a support tower. The rod is enclosed in a dielectric tube (14) which is hermetically sealed to the rod's end fittings such that a liquidtight space (20) is formed between the rod and the tube. A pressurized dielectric liquid is placed within that space. A discoloring dye placed within this space is used to detect the loss of the pressurized liquid.