Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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电击防护用剩余电流动作保护器电流保护范围分析

来源:电工电气发布时间:2017-03-24 08:24 浏览次数:8
电击防护用剩余电流动作保护器电流保护范围分析
 
李光曦,吴英
(中信建筑设计研究总院有限公司,湖北 武汉 430014)
 
    摘 要:根据IEC 标准, 计算了人体不同电流路径对应的安全电流阈值,分析了电流通过人体的效应。通过比较电流对人的效应与无延时型剩余电流动作保护器(RCD) 的动作时间/ 电流特性,得出了现有配电设计中采用的RCD 不能满足全电流范围段保护的结论,提出了从电流波形入手,研发具有甄别电击波形能力的RCD,提高RCD 的保护精度,减少误动作等改进要求。
    关键词:剩余电流动作保护器;额定剩余动作电流;电击防护;附加保护
    中图分类号:TM561     文献标识码:B     文章编号:1007-3175(2017)01-0061-04
 
Current Protection Range Analysis of Residual Current Device for Protection Against Electric Shock
 
LI Guang-xi, WU Ying
(CITIC General Institute of Architectural Design and Research Co., Ltd, Wuhan 430014, China)
 
    Abstract: According to the IEC standard, this paper calculated the safety current threshold value of different current path of human body and analyzed the effect of the current through human body. By comparing the effect of current on human body with the action time-current characteristics of no delay residual current device (RCD), this paper concluded that the RCD used in the existing current distribution design could not meet the requirement of the full current range protection. It is suggested that starting from the current waves, the RCD with the ability to discriminate electric shock waves will be developed to raise the protection precision of the RCD and to reduce malfunction etc.
    Key words: residual current device; rated residual operating current; protection against electric shock; additional protection
 
参考文献
[1] GB 50054—2011 低压配电设计规范[S].
[2] GB/Z 6829—2008 剩余电流动作保护电器的一般要求[S].
[3] GB/T 13870.1—2008/IEC/TS 60479-1:2005 电流对人和家畜的效应 第1 部分:通用部分[S].
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