Analysis of maximum transmission distance of poe power supply switch

What is a POE power switch

A POE power supply switch is a switch that provides network power to a remote power receiving terminal through a network cable. It includes two functions: a network switch and a POE power supply. It is a common power supply device in a POE power supply system.

Overview

A POE power supply switch is a switch that provides network power supply to a remote power receiving terminal through a network cable. It includes two functions: network switch and POE power supply. It is a common power supply device in a POE power supply system. The port supports output power up to 15.4W. IEEE802.3af standard, the port supports output power up to 30W, conforms to the IEEE802.3at standard, and supplies power to the standard POE terminal equipment through the power supply of the network cable, eliminating the need for additional power wiring. The POE switch conforms to the IEEE802.3aT standard, and the port output power can reach 15-60W. Generally speaking, the POE power supply switch is a switch that supports the power supply of the network cable. It can not only realize the data transmission function of the ordinary switch but also supply power to the network terminal at the same time.

POE (POwer Over Ethernet) refers to some IP-based terminals (such as IP phones, WLAN access points, APs, networks) without any changes to the existing Ethernet Cat.5 cabling infrastructure. Cameras, etc., while transmitting data signals, can also provide DC power supply technology for such devices. POE technology can ensure the normal operation of existing networks while minimizing costs while ensuring the security of existing structured cabling. POE is also known as POL (Power Over LAN) or Active Ethernet (AcTIve Ethernet), sometimes referred to as Power over Ethernet. This is the simultaneous transfer of data using existing standard Ethernet transmission cables. The latest standard specification for electrical power and maintains compatibility with existing Ethernet systems and users. The IEEE 802.3af standard is a new standard based on the Power over Ethernet (PoE) system. It adds the standard for direct power supply through the network cable based on IEEE 802.3. It is an extension of the existing Ethernet standard and the first international standard for power distribution. standard.

Analysis of maximum transmission distance of poe power supply switch

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