The AC Voltage Transducer converts ac current or voltage signal into standard dc current or voltage signal, that signal transducer is widely applied in power monitoring and control in power grid. The isolation voltage among input, output, power supply is upto 1.5KVDC. HIC Series AC to DC Current Voltage Transducers convert ac currents and voltages to dc process signals for direct connection to data acquisition and recording systems. The high efficient modulation and demodulation circuit provide accurate readings for signals which contain harmonic distortion. The input can be 3-phase 3-wire AC current or voltage signal input or 3-phase 4-wire AC current or signal input, standard dc current or voltage output. The accuracy is up to 0.2%, 2500VDC isolation.