Abstract
This paper describes the structure of an strain type FRP core for polymer composite insulator. The polymer composite insulator consists of an FRP core for mechanical force resistance, outdoor use polymer insulating materials as the housing, and metal end fittings, and is being examined to be applied as a substitute for the conventional porcelain insulator.
The developed FRP core is used for mechanically straining the conductor. The FRP shaped like a race-track-coil and connected with the metal end fittings. A basic experiment was conducted by changing the number of glass fibers (number of rovings) of the FRP core. Based on the results of experiment and simulation to obtain tensile strength characteristic, samples of an FRP core corresponding to a maximum service tensile load of 50 kN were experimentally manufactured, and it was verified by a tensile load test that the FRP core has almost the intended mechanical performance.
