電擊防護(hù)用剩余電流動(dòng)作保護(hù)器電流保護(hù)范圍分析
 

李光曦，吳英
（中信建筑設(shè)計(jì)研究總院有限公司，湖北 武漢 430014）
 

    摘 要：根據(jù)IEC 標(biāo)準(zhǔn), 計(jì)算了人體不同電流路徑對(duì)應(yīng)的安全電流閾值，分析了電流通過人體的效應(yīng)。通過比較電流對(duì)人的效應(yīng)與無延時(shí)型剩余電流動(dòng)作保護(hù)器(RCD) 的動(dòng)作時(shí)間/ 電流特性，得出了現(xiàn)有配電設(shè)計(jì)中采用的RCD 不能滿足全電流范圍段保護(hù)的結(jié)論，提出了從電流波形入手，研發(fā)具有甄別電擊波形能力的RCD，提高RCD 的保護(hù)精度，減少誤動(dòng)作等改進(jìn)要求。
    關(guān)鍵詞：剩余電流動(dòng)作保護(hù)器；額定剩余動(dòng)作電流；電擊防護(hù)；附加保護(hù)
    中圖分類號(hào)：TM561     文獻(xiàn)標(biāo)識(shí)碼：B     文章編號(hào)：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
 

參考文獻(xiàn)
[1] GB 50054—2011 低壓配電設(shè)計(jì)規(guī)范[S].
[2] GB/Z 6829—2008 剩余電流動(dòng)作保護(hù)電器的一般要求[S].
[3] GB/T 13870.1—2008/IEC/TS 60479-1：2005 電流對(duì)人和家畜的效應(yīng) 第1 部分：通用部分[S].
[4] 王厚余. 電子式RCD和電磁式RCD的選用[J]. 建筑電氣，2010，29(2)：3-6.
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[6] GB/T 12113—2003/IEC 60990:1999 接觸電流和保護(hù)導(dǎo)體電流的測(cè)量方法[S].