YD 5210-2014-240V直流供电系统工程技术规范.pdfVIP

YD Communications Industrial Standard of the Peoples Republic of China YD 5210-2014 Replace YD/T 841.1-2008 TechnicalSpecificationsfor240V DC Power Supply System Engineering 240V直流供电系统工程技术规范 （English Translation） Issue date:2014 - 05–06 Implementation date:2014-07-01× Issued by Ministry of Industry and Information Technology of the Peoples Republic of China YD 5210-2014 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 originalshall be considered authoritative. This specification is formulated based on the requirements of the “Notice on the Compilation plan for Communications Engineering Construction Standards in 2010” (Ministry of Industry and Information Technology of the Peoples Republic of China Announcement [2010] No. 47) of the GeneralOffice of Ministry of Industry and Information Technology in order to meet the needs of the 240V DC power supply system. This specification establishes the configuration principles, wire selection, supervision, grounding,construction projects installation,and acceptance of 240V DC power supply system forcommunications.Thespecificationsmainly includekeytechnologies including240VDCpower supply system, suspension method, and Insulation Monitoring. Article (Item) 1.0.7,5.2.2,8.1.2, 8.2.1 and 9.3.2 of this specification marked in boldface are mandatory provisions and must be strictly implemented (enforced). Attention isdrawntothe possibilitythat someoftheelementsofthispartmay bethe subject of patent rights. The issuing body of this document sh