EN 50021 : 99 COR 2000被替代
ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - TYPE OF PROTECTION "N"
出版：European Committee for Standards - Electrical
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基本信息
標準編號： EN 50021 : 99 COR 2000
標準類別：Standard
出版單位：European Committee for Standards - Electrical
標準頁數：0
標準簡介
Defines requirements for construction, testing and marking of Group II electrical apparatus with type of protection "n", meant to be used solely in areas where explosive atmospheres of gas, vapour and mist are not likely to occur, or if they do, only infrequently or for a short time.
