INICT03
多箱型组件每个箱体通常都有保护和法兰连接，包含一个功能单元，可以是自动断路器、启动器、带锁定开关或断路器的插座。就预期功能而言，配电盘可分为以下类型：-主配电盘主配电盘通常安装在中压/低压变压器或发电机的下游；它们也被称为权力中心。主配电盘由一个或多个输入单元、母线连接器和数量相对较少的输出单元组成。-二次配电盘二次配电盘包括用于配电的各种配电盘，并配有一个输入单元和多个输出单元。-电机操作板电机控制板设计用于控制和集中保护电机：因此，它们包括用于操作和保护的相关协调装置，以及辅助控制和信号装置。-控制、测量和保护板控制、测量和保护板通常由桌子组成，其中主要包含工业过程和系统的控制、监测和测量设备。-机器侧板机器侧板的功能与上述类似；它们的作用是为机器和操作员提供电源接口。-建筑工地组件（ASC）建筑工地组件可能有不同的尺寸，从简单的插头和插座组件到带有金属或绝缘材料外壳的真正配电板。它们通常是可移动的，或者在任何情况下都是可移动的。组件内部温升限值的验证介绍标准IEC 61439-1规定的温升限值的验证可根据以下一种或多种方法进行：-电流验证试验（实验室）；-从设计规则中扣除；-代数计算。

INICT03
- Multi-box-type assembly Each box, generally protected and flanged, contains a functional unit which may be an automatic circuit-breaker, a starter, a socket complete with locking switch or circuit-breaker. With regard to the intended function, switchboards may be divided into the following types: - Main distribution boards Main distribution boards are generally installed immediately downstream of MV/ LV transformers, or of generators; they are also termed power centres. Main distribution boards comprise one or more incoming units, busbar connectors, and a relatively smaller number of output units. - Secondary distribution boards Secondary distribution boards include a wide range of switchboards for the distribution of power, and are equipped with a single input unit and numerous output units. - Motor operation boards Motor control boards are designed for the control and centralised protection of motors: therefore they comprise the relative coordinated devices for operation and protection, and auxiliary control and signalling devices. - Control, measurement and protection boards Control, measurement and protection boards generally consist of desks containing mainly equipment for the control, monitoring and measurement of industrial processes and systems. - Machine-side boards Machine-side boards are functionally similar to the above; their role is to provide an interface between the machine with the power supply and the operator. - Assemblies for construction sites (ASC) Assemblies for construction sites may be of different sizes, from a simple plug and socket assembly to true distribution boards with enclosures of metal or insulating material. They are generally mobile or, in any case, transportable. Verification of the temperature-rise limits inside an assembly Introduction The verification of the temperature-rise limits imposed by the Standard IEC 61439-1 can be carried out according to one or more of the following methods: - verification test with current (in laboratory); - deduction from design rules; - algebraic calculation.