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fang bao dian ji xuan xing
Author(s): 
Pages: 2-3
Year: Issue:  8
Journal: Electric Age

Abstract: <正> 一、爆炸危险场所的等级划分防爆电机的选型,首先要确定安装场所属于何种爆炸危险等级。为此,先将这类环境的场所等级划分做一简要说明。我国尚未正式颁布危险场所的划分标准,通常是靠近IEC分级方法,按爆炸性混合物出现的频度和持续时间分成三级,称0区、1区和2区。0区:连续地或预计会长期或短期频繁出现爆炸性气体的环境。
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