POLYMER ROD INSULATOR WITH IMPROVED RADIO NOISE AND CORONA CHARACTERISTICS

摘要

POLYMER ROD INSULATOR WITH IMPROVED RADIO NOISE AND CORONA CHARACTERISTICS Edward S. Wheeler and Anthony J. Campagna OF THIS DISCLOSURE This disclosure teaches a suspension insulator comprised typically of a fiberglass rod with mounted metal hardware at each end and juxtaposed polymer sheds strung thereon, which insulator has been improved for high voltage application. Above system voltages of about 138 kV, undesirable radio noise and corona occurs in the area of the metal hardware in conventional designs. Addition of semiconducting polymers between the metal hardware and the polymer sheds significantly reduces the level of generated radio noise and eliminates the corona.