Achieve a contactor voltage contact closure and disconnection time

Analysis of the AC contactor is closed under different conditions and breaking contact when the voltage across the loop current situation and study the AC1 ~ AC4 work system under the control of timing. Applications Advantech PCL818HG data acquisition card for the main circuit voltage, current situation in real time. In the control software, respectively, to complete DOS and  mcb circuit breaker control software design,  air circuit breaker , AC contactor is closed and disconnected moments voltage and current waveforms dynamic display function, so that the device not only as a  electric meter electric AC contactor life test device , also on the contactor contacts to provide the necessary research test data, the device has a self-test function and precision calibration functions.