In this study, the characteristics of electrostatic attenuation in plain shape glass filament sample (0.29 mm thickness, cross section of 12.25 cm2, 16 cm2, 20.25 cm2) for insulator has been measured at temperature of 5℃∼ 38℃, humidity of 50%∼90%. The results of this study are as follows. In case of samples that the cross section is 12.25 cm2, 16 cm2, 20.25 cm2 at humidity of 50%∼90%, it found that the electrification voltage of electrostatic increased with increasing temperature, with a return to decrease at 20℃. In case of samples that the cross section is 12.25 cm2, 16 cm2, 20.25 cm2 at temperature of 5℃~38℃, it found that the electrification voltage of electrostatic decreased with increasing humidity. In case of the sample at temperature of 20℃ and humidity of 65%, 75%, it found that the electrification voltage of electrostatic increased with increasing cross section. In case of the sample at humidity of 65% and cross section of 12.25 cm2, the time that it takes to reduce electrification voltage of electrostatic in half decreased to 0.912s, 0.736s, 0.673s with increasing temperature to 10℃ 20℃, 30℃.
