GB7674-200×额定电压72.5kV及以上气体绝缘金属封闭开关设备(报批稿)

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1、ICS29.130.10K43中华人民共和国国家标准GB7674—200×代替GB7674-1997额定电压72.5kV及以上气体绝缘金属封闭开关设备Gas-insulatedmetal-enclosedswitchgearforratedvoltagesof72.5kVandabove（IEC62271-203:2003High-voltageswitchgearandcontrolgear-Part203:Gas-insulatedmetal-enclosedswitchgearforratedvoltagesabov

2、e52kV，MOD）（报批稿）（本稿完成日期：2007-05）××××-××-××发布××××-××-××实施国家质量监督检验检疫总局发布GB7674—200×目次前言..................................................................................V1概述................................................................................11.1范围........

3、......................................................................11.2规范性引用文件....................................................................12正常和特殊使用条件..................................................................22.1正常使用条件............................

4、..........................................22.2特殊使用条件......................................................................23术语和定义..........................................................................34额定值........................................................

5、......................54.1设备的额定电压(U)...............................................................5r4.2额定绝缘水平......................................................................54.3额定频率(f)......................................................................7r4

6、.4额定电流和温升....................................................................74.5额定短时耐受电流(I)..............................................................7k4.6额定峰值耐受电流(I)..............................................................7p4.7额定短路持续时间(t)................

7、..............................................7k4.8合分闸装置以及辅助和控制回路的额定电源电压(U)...................................7a4.9合分闸装置以及辅助和控制回路的额定电源频率........................................74.10绝缘和/或操作用压缩气源的额定压力................................................75设计与结构...........

8、...............................................................85.1开关设备和控制设备中液体的要求....................................................85.2开关设备和控制设备中气体的要