Zusammenfassung
Suspension insulator units were tested in a
pressure controlled vessel and the relationship between corona
extinction voltage and the atmospheric pressure was obtained.
The corona extinction voltage was reduced as the atmospheric
pressure lowered. Corona characteristics were greatly
improved by applying semiconducting glaze on the porcelain
surface near a cap edge and a pin. The suspension insulator
units with partial semiconducting glaze are recommended for
use in transmission lines at high altitudes in order to suppress
corona activities.
Nutzer