Audio/video, information and communication technology equipment - Part 3: Safety aspects for DC power transfer through communication cables and ports

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 publicatio