Research Article

Analysis of Electrical Characteristics of Composite Insulators with the Presence of Optimum Layer of ZnO Microvaristors

Table 2

Material properties of insulator [4].

MaterialsRelative permittivity (εr)Conductivity (σ (S/m))

Silicone rubber4.3
Forged steel1
Air1
Microvaristor12σ (E)
FRP7.1