Electrical safety – Classification of interfaces for equipment to be connected to information and communications technology networks
|Publication Date:||1 May 2005|
|ICS Code (Information technology (IT) in general):||35.020|
|ICS Code (Electrical engineering in general):||29.020|
This technical report applies to equipment interfaces. These interfaces within the equipment may be connected to telecommunication networks, may form part of the telecommunication network infrastructure or may provide localized transfer of data. This technical report provides guidance on the classification of interfaces in accordance with the circuit types defined in IEC 60950-1 and IEC 60950-21 following an analysis of the telecommunication network characteristics.
This technical report only covers equipment appropriately interconnected. Furthermore, it does not address damage caused by one equipment to another equipment to which it is connected. Exceptionally, interfaces may be designed for higher or lower levels for special applications. In such cases it should be ensured that only interfaces having the same safety category and protection level are connected together. This is based on the available specifications of the equipment manufacturers and network providers, and on information regarding the installation category of the mains interface.
This technical report is intended to be used by equipment designers, network operators, network regulators/authoriti
If a standard other than IEC 60950-1 or IEC 60950-21 is used for designing the equipment and its interface (for example, IEC 62151 in conjunction with other product safety standards), then the corresponding requirements of these other standards are to be preferred.
If there is a conflict between this technical report and a more detailed specification, the latter prevails.
This technical report applies regardless of ownership or responsibility for installation and maintenance of the equipment or network.
NOTE Terminal equipment is often connected to customer premises cabling when used in a business environment, and there are standards covering such cabling.