Journal of Sensor Science and Technology (센서학회지)
- Volume 1 Issue 1
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- Pages.77-83
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- 1992
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- 1225-5475(pISSN)
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- 2093-7563(eISSN)
Fabrication of the Thermal Current Converters as the Primary AC Current Standard
교류전류 1차 표준용 열전형 전류변환기의 제작
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Kwon, Sung-Won
(Korea Research Institute of Standard and Science) ;
- Lee, Rae-Duk (Korea Research Institute of Standard and Science) ;
- Klonz, Manfred (Physikalisch-Technische Bundesanstalt, PTB, Germany)
- Published : 1992.08.31
Abstract
A primary standard of ac current at low frequency is derived from the standard of dc current by ac-dc transfer instrument. A set of 15 thermal current converters(TCCs) have been constructed as the primary current standards from 5 mA to 20 A at the frequency range of 10 Hz to 100 kHz. It is evaluated that the uncertainties for the maintenance and dissemination of ac current standard are less than 52 ppm up to 20 mA and 20 kHz, 60 ppm up to 100 mA and 20 kHz, and rising to 200 ppm at higher currents and frequencies.
저주파에서의 교류전류 1차표준은 교류-직류 변환기를 이용하여 직류전류표준으로부터 유도된다. 전류측 정범위
Keywords