I.S. EN 60255-149:2013现行
Measuring Relays and Protection Equipment Part 149: Functional Requirements for Thermal Electrical Relays (iec 60255-149:2013 (eqv))
出版：National Standards Authority of Ireland
专家解读视频
基本信息
标准编号： I.S. EN 60255-149:2013
发布时间：2013/10/8 0:00:00
标准类别：Standard
出版单位：National Standards Authority of Ireland
标准页数：52
标准简介
Defines a common and reproducible reference for evaluating dependent time relays which protect equipment from thermal damage by measuring a.c. current flowing through the equipment.
