Electric insulator for e.g. non-conventional instrument transformer, has optical fibers placed along external surface of body, and insulated material cover surrounding body, where optical fibers are housed in cured epoxy resin protection

摘要

The insulator (10) has an insulator body (11) including an external surface (19), and optical fibers (17) placed along the external surface of the body. An insulated material cover (14) surrounds the body, and the optical fibers are housed in a cured epoxy resin protection. The optical fibers are housed in a helical throat (18) that is arranged in the external surface of the body, and a sleeve is directly located at a contact of the external surface of the body.