1. Insulation resistance and resistivity

Resistance is the reciprocal of conductance, and resistivity is the resistance per unit volume. The lower the conductivity of Shanghai shielding glass, the greater the resistance, and the two become a reciprocal relationship. The shielding glass has always required a higher resistivity as possible.

2. Relative dielectric constant and dielectric loss tangent

Two types of shielding glass are used: electrical network components with mutual electrical insulation and capacitive media. The former requires a relatively small relative permittivity, which requires a relatively large relative permittivity, and both require dielectric loss tangent, especially in high-frequency and high-voltage applications of Shanghai shielding glass, in order to make the dielectric loss Small, need to use small Shanghai shielding glass with dielectric loss tangent.