UL 1604-2004 Electrical equipment for use in class I and class II division 2 and class III hazardous （classified） location.pdf

UL1604 sBN1-55989-610-8 Electrical Equipment for Use in Class and .Division 2 ,and Class Hazardous ( Classified)Locations or networking wihout from 标准分享网. .免费下载 FEBRUARY 3 ,2004 -UL 1604 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Electrical Equipment for Use in Class and ,Division 2 ,and Class Hazardous ( Classified)Locations ,UL 1604 Third Edition ,Dated April 28 ,1994 Revisions :This Standard contains revisions through and including February 3 ,2004 Summary of Topics This revision to UL 1604 issued to clarify Temperature Test procedures . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML - -aninternational standard ( ISO8879-1986 )- is a descriptive markup language that describes document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be included in revision pages due to relocation of existing text and reformatting of the Standa...