• Curtis Ashton - Director of Training, American Power Systems

Where network powering of equipment occurs, it is important that the link cable and connector current ratings (continuous current and i²t) are not exceeded. Example rated values for different conductor diameters and insulations are given. Power source equipment and network powered device testing will not usuallly comprehend the link connection capability. Safe pulsed powering in terms of voltage amplitude and duration have yet to be standardized. The possible values resulting from four different approaches (IEC 61140, IEC 62368-1, IEC 60479 and various papers) are discussed and evaluated