Re: [802.3_4PPOE] PD Transients (yseboodt_04)

[Ken <ken_bennett@xxxxxxxxx>]

Hi Lennart,
The new text:  "referenced from when the ‘final voltage’ is reached at 
the source", sets a time boundary which is after the time that the PD 
starts to violate Ppeak_PD.  Seems like it should start at the beginning 
of the transient, so that the PD Peak excursions that are beyond 
Ppeak_PD are no wider than 10ms and 6ms, to match Tlim_min in the PSE 
section.
Best Regards,
Ken

On 10/29/2017 10:09 AM, Lennart Yseboodt wrote:
> Hi folks,
>
> Attached proposed baseline for the PD transients section.
> At the September meeting it became obvious that Table 145-30 wasn't 
> terribly clear.
>
> I've re-simulated all of the transient conditions and, except for 
> Class 7, everything is OK.
> We may want to consider increasing the ILIM for Class 3, Class 4, and 
> Class 8 to make it such that PD's that "intrinsically" should be fine 
> actually are.
> See simulation_annot.pdf for simulation results.
>
> Kind regards,
>
> Lennart