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Technical Trends and International Standardization Activities in Electromagnetic Relays for Control Systems
IEICE TRANSACTIONS on Electronics
Publication Date: 2019/09/01
Online ISSN: 1745-1353
Type of Manuscript: Special Section INVITED PAPER (Special Section on Recent Development of Electro-Mechanical Devices)
electromagnetic relays, contact failures, IEC/TC94, JIS C,
Full Text: FreePDF
Electromagnetic relays were developed in the first half of 19th century. At the beginning, they have been mainly used for telecommunication systems, afterwards, their uses were expanded, they have been applied to various systems such as industry products, traffic control equipment, household appliances and so on. During this time, international standardization on them became active, Japan took part in the auxiliary relay committee in the International Electrotechnical Commission (IEC). Recently, Japan is playing an important role in the committee activities. In this paper, transition and the present circumstance on technical trends of the electromagnetic relays and their activities on international standardization are described, talking about some future prospects.