Effects of Notches in GIS Spacer Design to Hold Conductor Rods on Electric Field Distribution

This paper discusses the effects of notches in spacers of gas insulated switchgear (GIS) to hold conductor rod to prevent it from sliding down prior to installation. The spacers in question use epoxy resins as its main material with relative permittivity of 3.5. This paper compares the design of spacers without any notches and spacers with 3 notches in its conductor cavity. The results of this paper suggest that spacer with notches has higher electric field intensity compared to spacer without notches. Spacers with notches has maximum electric field intensity of 53.61 KV/cm while the spacers without notches has maximum electric field intensity of 27.84 kV/cm.