音频/视频、信息和通信技术设备第3部分:通过通信电缆和端口传输直流电的安全问题

[中文适用范围]： IEC 62368-3:2017 规定了旨在通过通信电缆或端口提供和接收操作电源的设备的要求。它涵盖了设计用于从电源供电设备（PSE）到供电设备（PD）传输直流电的电路的特殊要求。电力传输使用 ES1 或 ES2 电压，或在非常特殊的情况下使用 ES3 电压水平。该群体安全出版物主要旨在用作所述产品的产品安全标准，但也应由技术委员会在准备类似产品标准时使用，以符合 IEC 指南 104 和 ISO/IEC 指南 51 中规定的原则。 该部分适用于旨在通过通信电缆或端口提供和接收操作电源的设备。它涵盖了设计用于从电源供电设备 (PSE) 到供电设备 (PD) 传输直流电的电路的特殊要求。电力传输使用 ES1 或 ES2 电压，或在非常特殊的情况下使用 ES3 电压水平。该群体安全出版物主要旨在用作所述产品的产品安全标准，但也应由技术委员会在准备类似产品标准时使用，以符合 IEC 指南 104 和 ISO/IEC 指南 51 中规定的原则。 [外文原描述]： IEC 62368-3:2017 applies to equipment intended to supply and receive operating power through communication cables or ports. It covers particular requirements for circuits that are designed to transfer DC power from a power sourcing equipment (PSE) to a powered device (PD). The power transfer uses voltages at ES1 or ES2 or in very specific cases voltage levels at ES3. Any cable provided with a connector defined by an industry standard that permits DC power transfer between equipment is considered a communication cable even if communication does not take place. For example, a USB cable can be used just to recharge a portable device battery. This International Standard is to be used in conjunction with IEC 62368-1:2014. It has the status of a group safety publication in accordance with IEC Guide 104. The subclauses of IEC 62368-1 apply as far as reasonable. Where safety aspects are similar to those of IEC 62368-1, the relevant clause or subclause of IEC 62368-1 is given for reference in a note in the relevant subclause. Where a requirement in IEC 62368-3 refers to a requirement or criterion of IEC 62368-1, a specific reference to IEC 62368-1 is made. This group safety publication is primarily intended to be used as a product safety standard for the products mentioned in the scope, but shall also be used by technical committees in the preparation of standards for products similar to those mentioned in the scope of this standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.