Quels facteurs peuvent affecter la distance de transmission de l’alimentation PoE?

PoE peut transmettre des données via un seul câble réseau tout en alimentant les périphériques terminaux PoE tels que les points d’accès sans fil, Caméras réseau, Téléphones IP, Tampons, etc., avec une distance de transmission allant jusqu’à 100 Mètres. En raison de sa simplicité d’installation et de ses capacités 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 Mètres. 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 Mètres.

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 Mètres?

1. Network cable quality

The transmission distance of a Cat 5e data signal is approximately 100 Mètres. 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.

2. 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.

3. PoE switch performance