Concept and Features of Arrester Operating Duty Test in The Japanese Standard

摘要

The Japanese Electrotechnical Committee (JEC) of surge arresters has made great efforts to establish several new standards of metal-oxide surge arresters (MOSA), because the dramatic and continuous advance in the MOSA technology over the last 30 years required the new and improved test methods in succession. In the study of these standards, how to evaluate the MOSA performance against the energy duties has been usually the main topic because the energy duties are significantly related to the size of zinc-oxide elements and the construction of MOSA. This paper describes the concept and features of Japanese operating duty tests in the JEC standard in comparison with the IEC standard and also mentions the points at issues to be studied in the future, whicn is common to both the IEC and JEC standards. The continuous study on the improvement of the standards is required in cooperation with CIGRE/IEC taking into account of the latest world trend and the state-of-the-art technologies.