Powerdsine IEEE802.3 Manuel d'utilisateur télécharger pdf (Page 5)

PowerDsine Presentation October 2005 Page 5

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PoEp minimum voltage

 Lets assume current is 0.35A and calculate power delivered to the load by four

pairs

 It means, that at 51V, for the same power dissipation on the cable, power

delivered to the load will be 4.9W more then at 44V.

 The advantage of higher voltage is further increased for higher currents than

0.35A

32.64W27.74WMaximum power

delivered to the PD

3.06W 3.06WPower dissipation

on 4 pair

51V44V

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Powerdsine IEEE802.3 Manuel d'utilisateur Page 5