Power over ethernet system having hazard detection circuitry...

Details Power over ethernet system having hazard detection circuitry... Power over ethernet system having hazard detection circuitry...

2011-07-05

2011-07-05

Dole, Timothy J (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

Reexamination Certificate

active

07973538

ABSTRACT:
An apparatus includes power circuitry and hazard detection circuitry connectable to a multi-conductor cable. The power circuitry transfers electrical power from a power-sourcing equipment (PSE) to a powered device (PD) over the multi-conductor cable. The hazard detection circuitry senses an electrical characteristic of the multi-conductor cable and generates a detection signal indicating whether a potentially hazardous abnormal operating condition exists in the multi-conductor cable based on the sensed electrical characteristic. Examples include short-circuit detection circuitry which detects a hazard-producing short-circuit connection between sets of conductors that can cause a “stacking” or additive combining of PSE output voltages, and hot-cable detection circuitry detecting the presence of full operating voltage on the cable under abnormal conditions.

REFERENCES:
patent: 6459275 (2002-10-01), Ewalt et al.
patent: 7012436 (2006-03-01), Pannell et al.
patent: 7154381 (2006-12-01), Lang et al.
patent: 7417443 (2008-08-01), Admon et al.
patent: 7509114 (2009-03-01), Berson et al.
patent: 7593756 (2009-09-01), Ferentz et al.
patent: 2006/0100799 (2006-05-01), Karam
patent: 2007/0260904 (2007-11-01), Camagna et al.
patent: 2008/0122448 (2008-05-01), Pischl

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