Electrical Properties of SUMIKAEXCEL PES

SUMIKAEXCEL PES is a heat resistant material that possesses electrical insulating properties. It maintains an outstanding dielectric constant and dielectric dissipation factor, as well as superb electrical resistance, up until temperatures exceeding 200 deg C.

Dielectric Dissipation Factor

SUMIKAEXCEL PES has a constant, low dielectric dissipation factor of approximately 0.001 across a temperature range of 20 - 150 deg C (Figure 1). Even at frequencies of 109 Hz, the frequency dependence of the dielectric dissipation factor is only approximately 0.003 (Figure 2).

Figure 1
Temperature Dependence of Dielectric Dissipation Factor (60 Hz)
Figure 1 Temperature Dependence of Dielectric Dissipation Factor (60 Hz)
Figure 2
Frequency Dependence of Dielectric Dissipation Factor (Room Temperature)
Figure 2 Frequency Dependence of Dielectric Dissipation Factor (Room Temperature)

Dielectric Constant

The dielectric constant of SUMIKAEXCEL PES is consistent (3.5) from 60 Hz - 109 Hz. Even when a test specimen has absorbed water, the dielectric constant will only increase by a very small amount (Figure 3).

Figure 3 Frequency Dependence of Dielectric Constant

Figure 3 Frequency Dependence of Dielectric Constant

Volume Resistivity

SUMIKAEXCEL PES possesses a high volume resistivity of 10111 Ω/m, even at 200 deg C (Figure 4).

Figure 4 Temperature Dependence of Volume Resistivity (Polarization Time: 1000 sec.)

Figure 4 Temperature Dependence of Volume Resistivity (Polarization Time: 1000 sec.)
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