NFPA 499 化学工艺区易燃粉尘的分类及电气安装危险性分类推荐做法
日期:2012-02-09 16:43
azardous (classified) locations by accurately determining combustibility hazards according to the latest criteria in the 2008 NFPA 499.
NFPA 499 Classification of Combustible Dusts and of Hazardous Locations for Electrical Installations in Chemical Process Areas contains detailed guidelines and diagrams that serve as useful tool for professionals who perform hazardous (classified) area classification as specified by NFPA 70 National Electrical Code for the purpose of selecting and installing ele
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