Huawei DBS3900 Installation Manual page 37

LampSite
Installation Guide
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国际标准
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Bending radius
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Cable Binding
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Safety
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Issue 08 (2015-01-15)
综合布线系统工程设计规范 GB 50311-2007
综合布线工程验收规范（含条文说明） GB 50312-2007
安全防范工程技术规范 GB 50348-2004
电子信息系统机房施工及验收规范 GB 50462-2008
智能建筑工程质量验收规范 GB 50339-2003
建筑电气工程施工质量验收规范 GB 50303-2002
通信管道工程施工及验收技术规范 GB 50374-2006
用户建筑综合布 ISO／IEC 11801
商业建筑电信布线标准 EIA／TIA 568
商业建筑电信布线安装标准 EIA／TIA 569
商业建筑通信基础结构管理规范 EIA／TIA 606
商业建筑通信接地要求 EIA／TIA 60
信息系统通用布线标准 EN 50173
信息系统布线安装标准 EN 50174
The bending radius of a power cable or a protection ground (PGND) cable is at least three
times the diameter of the cable.
The bending radius of an optical cable is at least 20 times the diameter of the optical cable,
and the minimum bending radius of the branch at each end of the optical cable is 30 mm.
The bending radius of the signal cable must be at least five times the diameter of the cable.
Cables of the same type are bound together.
Different types of cables must be separately routed with a minimum spacing of 30 mm and
cannot be entangled or crossed.
The cables are bound tightly and neatly and the cable sheath is intact.
The cable ties face the same direction and all cable ties bound at similar positions must be
in a straight line.
The extra length of each indoor cable tie must be cut off. A slack of 5 mm is reserved for
each outdoor cable tie. All cut surfaces have no sharp edges.
Labels or nameplates are attached to both ends, joints, or turns of cables after they are
installed.
穿管/线槽采用钢管或阻燃聚氯乙烯硬质管，线槽的截面利用率应为30％～50％，
穿管的截面利用率应为25％～30％。
Cables are placed away from sharp objects or wall burrs. If these positions are inevitable,
protection pipes are required for the cables.
Cables are routed away from heat sources, or heat-insulation materials are added between
cables and heat sources.
Cables are routed away the cooling vents of the RHUB3908.
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5 Installing an RHUB3908
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