TopTechnical DictionaryePoE - a standard for data and power transmission over UTP and coaxial cable

ePoE - a standard for data and power transmission over UTP and coaxial cable

ePoE standard allows to supply power to the IP camera via a compatible network switch or NVR with embedded switch at the distance of up to 800 m (to overcomes the limitation of traditional Ethernet restricting cable distances to 100 metres).

 

The standard allows to transfer power over Ethernet at the distance of up to 800 m - 13 W power input at 10 Mb/s or at the distance of up to 300 m - 25.4 W power input at 100 Mb/s.

 

Fig. 1. Applications of ePoE technology

 

A solution patented by Dahua also allows to connect the IP cameras with coaxial cables with EoC LR1002 ePoE to BNC adaptor. The maximum transmission distance using RG-59 cable is 1000 m (at 10 Mb/s and max. 8 W power input). Table 1 shows available ePoE range using RG-59 cables.

 

Table 1. ePoE transmission distance using RG-59 cables

 

Cable Bandwidth Power input
(IEEE 802.3af/at)
100 m 100 Mbps 25.5 W
200 m 100 Mbps 25.5 W
300 m 100 Mbps 25.5 W
400 m 100 Mbps 20 W
500 m 10 Mbps 16 W
800 m 10 Mbps 10 W
1000 m 10 Mbps 8 W

ePoE technology offers data and power transmission at significant distances over coaxial and UTP cables. It offers more flexibility and reduces the rewiring costs.

 

Fig. 2. Data and power transmission distances in ePoE technology

 


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