Evaluation of standard impulse voltage/current measuring systems in Japan

Abstract

AbstractA national‐standard‐class impulse voltage measuring system in Japan was developed in the consignment research of the Ministry of Economy, Trade and Industry (METI) and New Energy and Industrial Technology Development Organization (NEDO) from 1998 to 2006. The standard measuring system for the impulse voltage measurements is managed by the Japan High Voltage Impulse Testing Laboratories Liaison (JHILL) established under the Japan Electric Machine Industry Association (JEMA). The standard impulse voltage measuring system calibrates other measuring systems and assesses their uncertainties, and, therefore, its uncertainty needs to be evaluated independently. The principal components of the system are a voltage divider, a digital recorder, and a low‐voltage calibrator which generates impulse voltages of known peak voltages and waveforms. Moreover, a reference measuring system for impulse current in Japan was also developed in 2009 supported by JEMA. Its international compatibility was confirmed through an international comparison test. Through domestic comparison tests, traceability among transducers of impulse current in Japan was established. In this paper, the constitution of these measuring systems, their performance, and related latest activities, such as comparison tests, are described. © 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.