OPTICAL-FIBER-CONTAINING INSULATING SPACER

摘要

The disclosed optical-fiber-containing insulating spacer contains optical fiber used in a current transformer, can be fabricated easily and economically, does not produce corona discharges from electric fields being concentrated in tiny gaps, and does not affect the properties of the current transformer. Said insulating spacer (1) contains the following embedded in an insulating molded member (3) formed as a single unit by molding an insulating material such as an epoxy resin: at least one conductor (2); and an optical fiber (14) made from a Faraday-effect material and a grounding shield disposed so as to surround the conductor(s). The grounding shield uses a cylindrical shielding member (15) made from a metal cylindrical material provided with a plurality of small holes, a strip-shaped metal material, metal wires, or the like. The aforementioned optical fiber (14), which is used as an optical current transformer component, is disposed at a prescribed position inside the cylindrical shielding member (15).