Power Over Ethernet Interoperability Guide

Overload and Short-Circuit Requirements as Per AT Standard

The key figure to reference for overload and short-circuit requirements in the AT standard is Figure 33-14 on page 49. This is called the Operating Current Template or the Overload Template. In Fig. 6.2, however, we have not simply reproduced Figure 33-14, but added a more information on top of it to help us understand how the AF standard changed over to the AT standard, and how we can comply with both at the same time.

FIGURE 6.2   The PSE operating template as per IEEE 802.3at, with ...