公开(公告)号：KR100745158B1

公开(公告)日：2007-07-26

申请号：KR20060020375

申请日：2006-03-03

Applicant: KOREA RES INST OF STANDARDS

Inventor： KWON SUNG WON ,  JO YONG MYEONG

IPC: G01R19/03

CPC classification number: G01R19/03 ,  G05F1/561

Abstract: 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.

Abstract translation: 提供了一种用于自动测量TCC（热电转换器）的AC-DC（交流 - 直流）电流传递差异的装置和方法，以防止由杂散电容引起的泄漏电流流动并最小化漂移的影响 的电流发生器，同时测量两个TCC的输出。 用于自动测量TCC的AC-DC电流转移差的装置（100）由产生正向和反向DC和AC电流的电流产生单元（120）组成，并将产生的电流提供给标准TCC（20）和TCC （30）待测量; 扫描单元（140），改变接收正向和反向DC和AC电流的TCC的每个输出的极性; 测量通过扫描单元感应的标准TCC的输出的第一电压表（150a）; 第二电压表（150b），测量通过扫描单元感测的要测量的TCC的输出; 以及计算单元，基于由所述第一和第二电压计测量的值来计算所述标准TCC的AC-DC电流转移差异所要测量的TCC的AC-DC电流转移差的相对值，如果前进和 提供反向直流和交流电流。 要测量的标准TCC和TCC串联。