IEC 62368-3:20 17适用于旨在通过通信电缆或端口提供和接收工作电源的设备。它涵盖了设计用于将DC电源从电源设备（PSE）传输到受电设备（PD）的电路的特殊要求。 功率传输使用ES1或ES2处的电压，或者在非常特殊的情况下使用ES3处的电压电平。 任何配备有由工业标准定义的允许设备之间DC电力传输的连接器的电缆被认为是通信电缆，即使没有发生通信。例如，USB电缆可以仅用于对便携式设备电池充电。 本国际标准将与IEC 62368-1:20 14结合使用。 根据IEC指南104，它具有团体安全出版物的地位。IEC 62368-1的子条款在合理范围内适用。如果安全性方面与IEC 62368-1相似，则在相关子条款的注释中给出IEC 62368-1的相关条款或子条款以供参考。当IEC 62368-3中的要求指IEC 62368-1的要求或标准时，具体指IEC 62368-1。 本团体安全性出版物主要用作范围内所述产品的产品安全性标准，但也应由技术委员会根据IEC指南104和lSO/lEC指南51中规定的原则，在编制与本标准范围内所述产品相似的产品标准时使用。 关键词:通信、安全、电缆、直流输电、？

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.
Keywords: Communication, Safety, Cables, DC Power Transfer,？