抄録
An impulse voltage measuring system of which performance is able to regard as the national standard class in Japan was developed in 1999. The same year, international comparison tests of the impulse measuring system were carried out among 23 countries. The performance of the impulse voltage measuring system in Japan was excellent.
For this measuring system in Japan, some tests to evaluate various performances of the components were carried out and the overall uncertainty of the system was estimated after the international comparison tests.
In this paper, the national standard class impulse voltage measuring system in Japan is described and its measuring uncertainty is discussed.
