Quais fatores podem afetar a distância de transmissão da fonte de alimentação PoE?

Postado em por homan-cctv

PoE pode transmitir dados através de um único cabo de rede enquanto fornece energia para dispositivos terminais PoE, como APs sem fio, câmeras de rede, Telefones IP, Almofadas, etc., com uma distância de transmissão de até 100 Metros. Devido à sua instalação simples e capacidades plug and play, the PoE power supply system is highly suitable for use in industries such as smart cities and security monitoring.

Twisted pair cables have an insurmountable transmission distance of 100 Metros. Whether it is a Cat3 with a transmission rate of 10M, a Cat 5e with a transmission rate of 100M, or even a Cat6 with a transmission rate of 1000M, the farthest effective transmission distance is 100 Metros.

Can’t the PoE transmission distance be further away?

What factors will affect its transmission distance?

What should I do when the network cable transmission distance exceeds 100 Metros?

  1. Network cable quality

The transmission distance of a Cat 5e data signal is approximately 100 Metros. Considering factors such as channel attenuation in engineering, to ensure construction quality, a distance of 80-90 meters is generally taken. The transmission distance here refers to the maximum speed, such as 100M. The power supply distance of PoE is closely related to the material of the network cable, and the lower the impedance of the network cable, the farther the transmission distance. The selected PoE switch or network cable has poor quality, which can seriously affect transmission distance and system stability.

  1. Cable laying and heat dissipation

The increase in cable temperature can lead to a decrease in channel attenuation and insertion loss performance. In PoE cable laying, the impact of cable laying on heat dissipation should be emphasized.

  1. PoE switch performance