YD-T 1537-2015通信系统用户外机柜.pdfVIP

ICS33.180.20 M 33 YD Communications Industry Standard of the Peoples Republic of China YD/T 1537-2015 Replace ReplaceYD/T 1537-2006 Outdoor cabinets for telecommunications system 通信系统用户外机柜 (English Translation) Issue date:2015-04-30 Implementation date:2015-07-01 Issued by Ministry of Industry and Information Technology of the Peoples Republic of China YD/T 1537-2015 Foreword China Communications Standards Association (CCSA) is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This standard is drafted in accordance with the rules given in the GB/T 1.1-2009. This standard replaces the YD/T 1537-2006 (Generic requirements for telecommunications system outdoor cabinets) in whole. The following deviations have been made with respect to the YD/T 1537-2006: ——Title was modified; ~ ——Terms and definitions of the Subclause 3.2 3.11 were added, terms and definitions of “nonventilated” and “ventilated” were deleted (see 3,3 inthe 2006 version); ——Clause 4 “Classification” was added (see 4); ——Relativehumidity rangewasmodified (see5.1.1.2,4.1.1.2 inthe2006version); —— “Requirementsofthe externalmaterialused foroutdoorcabinets” were added (see 5.3.1); ——Recommendeddimensionofthecabinetswasmodified (see5.3.3,4.3.3 inthe2006 version); ——Warning contents of the invalid temperature controlwere added (see 5.5.6); ——Warning contents of the MDF racks were added (see 5.5.7); ——Warning contents of the broken-down or invalid lightning