1、常见机柜的型号

　　1. Common cabinet models

　　规定的尺寸是服务器的宽（48.26cm＝19 英寸）与高（4.445cm 的倍数）。 由于宽为 19 英寸，所以有时也将满足这一规定的机架称为“19 英寸机架”。厚度以 4.445cm 为基本单位，1U 就是4.445cm。

　　The specified dimensions are the width (48.26cm=19 inches) and height (multiples of 4.445cm) of the server. Due to its width of 19 inches, racks that meet this requirement are sometimes referred to as "19 inch racks". The basic unit of thickness is 4.445cm, and 1U is 4.445cm.

　　机柜内排序布局

　　Sorting layout inside the cabinet

　　机柜通常分为四个区域：

　　Cabinets are usually divided into four areas:

　　 1、交流配电单元?：位于机柜上端，负责电力分配，需符合规范。  

　　What? 1. Communication distribution unit? Located at the top of the cabinet, responsible for power distribution and must comply with safety regulations.  

　　2、配线架区?：用于网络、电话等线缆管理，建议放置在中部易操作区域。 

　　2. Distribution frame area? Used for network, telephone and other cable management, it is recommended to place it in the central easy to operate area.   

　　3、有源设备区?：包括交换机、路由器等需散热的设备，通常按功能顺序排列（服务器-路由器-交换机），大件设备放底部以方便维护。  

　　3. Active equipment area? Including devices that require heat dissipation such as switches and routers, they are usually arranged in functional order (server router switch), with large equipment placed at the bottom for easy maintenance.  ?

　　4、光缆终端盒?：放置在底层托盘上，与光缆集中管理。 ?

　　4. Fiber optic cable terminal box? Placed on the bottom tray and centrally managed with optical cables.   

　　排列顺序

　　Arrange order

　　?线缆管理?：采用固线器固定线缆，自上而下排列，左右均匀分布，避免交叉。  

　　What? Cable management? Use a cable stabilizer to fix the cables, arrange them from top to bottom, evenly distribute them left and right, and avoid crossing.   

　　设备安装?：大功率设备（如服务器）需预留散热空间，前后间距≥300mm。

　　Equipment installation? High power devices (such as servers) need to reserve heat dissipation space with a front to back distance of ≥ 300mm.

　　扩展性?：预留扩展空间，机柜间面板需保持平行，缝隙≤3mm。 

　　Scalability? Reserve expansion space, and the panels between cabinets should be kept parallel with a gap of ≤ 3mm?

　　典型布局示例

　　Typical Layout Example

　　 22U机柜?：顶部4U用于光纤配线架，中部8U为24口模块配线架，底部8U为交换机或路由器。  

　　What? 22U cabinet? The top 4U is used for fiber optic distribution frames, the middle 8U is for 24 port module distribution frames, and the bottom 8U is for switches or routers.  

　 42U机柜?：通常上部4U光纤配线架，中部24U交换机/路由器/理线器，底部8U为光缆终端盒或托盘。 

　　What? 42U cabinet? Usually, the upper 4U fiber optic distribution frame, the middle 24U switch/router/cable organizer, and the bottom 8U are fiber optic cable terminal boxes or trays.  

　　需注意：机柜安装需垂直偏差≤3mm，水平误差≤2mm，确保稳固性和散热需求。

　　Attention: The installation of the cabinet should have a vertical deviation of ≤ 3mm and a horizontal error of ≤ 2mm to ensure stability and heat dissipation requirements.

　　3、机柜内走线要求：（重要内容）

　　3. Requirements for wiring inside the cabinet: (Important content)

　　多次有朋友问到关于机柜内走线的内容，这次弱电行业网在这里一起来谈下。

　　Many friends have asked about the wiring inside the cabinet, and this time the weak current industry network is here to discuss it together.

　　1、 线缆的布放应自然平直，不得产生扭绞、打圈接头等现象，不应受外力的挤压和损伤。

　　1. The laying of cables should be natural and straight, without twisting, looping joints or other phenomena, and should not be compressed or damaged by external forces.

　　2、 缆线两端应贴有标签，应标明编号，标签书写应清晰，端正和正确。标签应选用不易损坏的材料。

　　2. Both ends of the cable should be labeled with numbers, and the label writing should be clear, upright, and correct. Labels should be made of materials that are not easily damaged.

　　3、 在线缆预留方面，对于固定安装的机柜，在机柜内不应有预留线长，预留线应预留在可以隐蔽的地方，长度在1m-1.5m之间。对于可移动的机柜，联入机柜的全部线缆在联入机柜的入口处，应少预留1m，同时各种线缆的预留长度相互之间的差别应不超过0.5m。

　　3. In terms of cable reservation, for fixed installation cabinets, there should be no reserved wire length inside the cabinet. The reserved wire should be reserved in a concealed place with a length between 1m-1.5m. For movable cabinets, all cables connected to the cabinet should be reserved at least 1m at the entrance of the cabinet, and the difference in reserved length between various cables should not exceed 0.5m.

　　4、 缆线终接后，应有余量。

　　4. After the cable is terminated, there should be a margin.

　　5、 光缆布放宜盘留，预留长度宜为3~5m，有特殊要求的应按设计要求预留长度。

　　5. The optical cable layout should be coiled and reserved with a length of 3-5m. If there are special requirements, the reserved length should be according to the design requirements.

　　6、 不同电压等级，不同电源类别的线路应分开布置，分隔敷设。

　　6. Lines of different voltage levels and power supply categories should be arranged and laid separately.

　　7、 引入机柜内的缆线应从机柜的下方进入机柜，沿机柜后方两侧立杆向上引入配线架，卡入跳线架连接快内的单根线缆色标应和跳线架的色标相一致，大对数线缆按标准色谱的组合规定进行排序。

　　7. The cables introduced into the cabinet should enter from the bottom of the cabinet, and be led upwards along the vertical poles on both sides of the cabinet to the distribution frame. The single cable connected to the jumper frame should have the same color code as the jumper frame, and the large number of cables should be sorted according to the combination regulations of the standard color spectrum.

　　8、 接线端子各种标志应齐全，数据配线架及交换机设备安装完成后，标贴机打标签，注明对应房间号以及端口号。

　　8. The various markings of the wiring terminals should be complete. After the installation of the data distribution frame and switch equipment, the labeling machine should label them with the corresponding room number and port number.

　　9、 缆线在接终端钱，必须核对缆线标识内容是否正确。、

　　9. When connecting the cable to the terminal, it is necessary to check whether the cable identification content is correct. 、

　　10、 缆线中间不允许有接头。

　　10. No joints are allowed in the middle of the cable.

　　11、 缆线终接处必须牢固、接触良好。

　　11. The cable termination must be firm and in good contact.

　　12、 缆线终接应符合设计和施工操作规程。

　　12. Cable termination should comply with the design and construction operating procedures.

　　13、 对绞电缆与插接件连接应认准线号、线位色标，不得颠倒和错接。

　　13. The connection between twisted pair cables and connectors should identify the wire number, wire position color code, and should not be reversed or misconnected.

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