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防护等级IP表示
防止接触带电部件，防止固体进入
防止液体和异物进入。IP代码是所使用的系统
用于识别防护等级，符合标准IEC 60529的要求。除非制造商另有规定，
防护等级适用于整个配电盘，装配和
安装用于正常使用（门关闭）。
制造商还应说明适用于特定设备的防护等级
服务中可能出现的配置，例如
门打开或设备拆除或抽出。
222保护和控制装置| ABB
5个配电盘
5.1电气配电盘
主要标准
无分离
母线与功能单元的分离
将母线与功能单元分离，以及
将所有功能单元彼此分离。
外部导体端子的分离
从功能单元，但不是从彼此
将母线与功能单元分离，以及
将所有功能单元彼此分离，
包括外部导体的端子
是功能单元的组成部分
次标准
外部导体的端子
与母线分离
外部导线用接线端子
与母线分离
外部导体的端子
与母线分离
外部导线用接线端子
与母线分离
电缆中外部导体的端子
与相关的舱室相同
功能单元
外部导体端子不在
与相关设备相同的隔间
功能单元，但独立，
封闭的受保护空间或
隔间
类型
表格一
表格2a
表格2b
表格3a
表格3b
表格4a
表格4b
配电盘的分离和分类形式
内部分离形式
分离形式是指在
总机。通过屏障或隔板（金属或绝缘）进行分离
可能具有以下功能：
-在进入时提供直接接触保护（至少IPXXB）
相对于配电盘的其余部分，配电盘的一部分不带电
保持带电的配电盘；
-降低启动或传播内部电弧的风险；
-阻碍配电盘不同部件之间的固体通道
（防护等级至少为IP2X）。
隔板是两个部分之间的分隔元件，而屏障则起到保护作用
操作员不受直接接触和任何中断的电弧影响
设备处于正常访问方向。
标准IEC 61439-1-2中的下表突出了
可使用屏障或隔板实现的分离：

XV7717b
The degree of protection IP indicates a level of protection provided by the assembly against access to or contact with live parts, against ingress of solid foreign bodies and against the ingress of liquid. The IP code is the system used for the identification of the degree of protection, in compliance with the requirements of Standard IEC 60529. Unless otherwise specified by the manufacturer, the degree of protection applies to the complete switchboard, assembled and installed for normal use (with door closed). The manufacturer shall also state the degree of protection applicable to particular configurations which may arise in service, such as the degree of protection with the door open or with devices removed or withdrawn. 222 Protection and control devices | ABB 5 Switchboards 5.1 Electrical switchboards Main criteria No separation Separation of busbars from the functional units Separation of busbars from the functional units and separation of all functional units from one another. Separation of the terminals for external conductors from the functional units, but not from each other Separation of busbars from the functional units and separation of all functional units from one another, including the terminals for external conductors which are an integral part of the functional unit Subcriteria Terminals for external conductors not separated from busbars Terminals for external conductors separated from busbars Terminals for external conductors not separated from busbars Terminals for external conductors separated from busbars Terminals for external conductors in the same compartment as the associated functional unit Terminals for external conductors not in the same compartment as the associated functional unit, but in individual, separate, enclosed protected spaces or compartments Form Form 1 Form 2a Form 2b Form 3a Form 3b Form 4a Form 4b Form of separation and classification of switchboards Forms of internal separation By form of separation it is meant the type of subdivision provided within the switchboard. Separation by means of barriers or partitions (metallic or insulating) may have the function to: - provide protection against direct contact (at least IPXXB) in the case of access to a part of the switchboard which is not live, with respect to the rest of the switchboard which remains live; - reduce the risk of starting or propagating an internal arc; - impede the passage of solid bodies between different parts of the switchboard (degree of protection of at least IP2X). A partition is a separation element between two parts, while a barrier protects the operator from direct contact and from arcing effects from any interruption devices in the normal access direction. The following table from Standard IEC 61439-1-2 highlights typical forms of separation which can be obtained using barriers or partitions: