AN AUTOMATIC MEASUREMENT DEVICE FOR THE AC-DC CURRENT TRANSFER DIFFERENCE OF THE THERMAL CURRENT CONVERTER AND METHOD THEREOF

摘要

A device and a method for automatically measuring AC-DC(Alternating Current-Direct Current) current transfer difference of a TCC(Thermal Current Converter) are provided to prevent the leaking current generated due to stray capacity from flowing and to minimize influence of a drift of a current generator by measuring the output of two TCCs at the same time. A device(100) for automatically measuring AC-DC current transfer difference of a TCC is composed of a current generating unit(120) generating forward and reverse DC and AC current and supplying the generated current to a standard TCC(20) and a TCC(30) to be measured; a scan unit(140) changing the polarities of each output of the TCCs receiving the forward and reverse DC and AC current; a first voltmeter(150a) measuring the output of the standard TCC induced through the scan unit; a second voltmeter(150b) measuring the output of the TCC to be measured, induced through the scan unit; and a calculating unit computing a relative value of AC-DC current transfer difference of the TCC to be measured for the AC-DC current transfer difference of the standard TCC on the basis of a value measured by the first and second voltmeters if the forward and reverse DC and AC current is supplied. The standard TCC and the TCC to be measured are connected in series.