The measurement technique used in modern high-voltage networks is currently marked by a transition from the classical, inductive or capacitive analog systems to the nonconventional systems based on embedded or hybrid sensors and digital fiber optic transmissions. The paper presents the achievement of a high voltage insulator with embedded fiber optic, dimensionally and dielectrically identical with a common insulator with the same operating voltage. It represents the physical support required for the digital transmission of any electrical or non-electrical quantity from high potential, it has 4 optical fiber channels and the possibility of supplying a sensor at high potential by power over fiber (PoF). The paper describes the design of the FO insulator and its qualification testing.

Keywords: High voltage, Fiber optic (FO) link, FO line insulator, Nonconventional instrument transformer