UL 50E-2007 Enclosures for Electrical EquipmentEnvironmental Considerations.pdf
文档页数：50文档大小：724.44KB文档格式：pdfUL 50EEnclosures for ElectricalEquipment ,EnvironmentalConsiderationsThis PDF Standard downloaded from. . SEPTEMBER 4 .2007 - UL50EUnderwriters Laboratories Inc .( UL) 333 Pfingsten RoadNorthbrook .IL 60062-2096UL Standard for Safety for Enclosures for Electrical Equipment ,Environmental Considerations ,UL 50EFirst Edition ,Dated September 4 ,2007Summary of TopicsThis first edition of ANSI /UL50E is the result of the harmonization effort develop a tri-nationalstandard covering requirements for enclosures for electrical equipment .The first edition of UL50E contains the additional construction ,performance ,and marking requirements related theenvironmental type rating designations .The non-environmental construction ,performance , and marking requirements for enclosures are included in the twelfth edition of UL 50 . The new requirements are substantially in accordance with UL's Proposal ()onthis subject dated March11,2005and August 25,2006. As indicated on the title page ( page1 ),this UL Standard for Safety is an American National Standard . Attention is directed to the note on the title page of this Standard outlining the procedures to be f...
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