•    Option additional function for ST4030

•    Detect microscopic partial discharges obscured by noise to determine defective insulation (pseudo-shorts)

•    HIOKI original filter * (*Noise components within the high frequency components appearing within the entire response waveform are removed to extract only the partial discharge component in order to make a pass/fail determination. Jointly developed with Aisin AW Co., Ltd.)

•    Peripheral equipment (antenna for discharge detection etc.) not required to easily detect discharge