PowerDsine IEEE802.3 - Manual (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
32.64W 27.74W Maximum power
delivered to the PD
3.06W 3.06W Power dissipation
on 4 pair
51V 44V