POE14-137

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Power over Ethernet (PoE) is a technology of supplying power over Ethernet cables. The PoE standard, IEEE 802.3af, also known as PoE 14-137, is used by many organisations for powering a wide variety of devices, from network cameras and video surveillance systems to telephone and wireless access points. PoE 14-137 works by sending power through the Ethernet cable to the device, allowing for a more convenient and cost-effective solution than traditional external power supplies. In this article, we will discuss the application field and working principle of PoE 14-137.

PoE 14-137\'s application field is broad and covers a large variety of network devices. For example, PoE 14-137 is commonly used for powering VoIP phones and Access Points, as well as IP cameras and video surveillance systems. It is also used to power Voice over IP (VOIP) routers, modems, and switches. Additionally, PoE 14-137 is also used for powering Industrial Ethernet switches, LED lighting systems, and even thin clients, such as kiosks or digital signage.

In terms of working principle, PoE 14-137 works by using a specific wire-pairing mechanism that sends power through the Ethernet cables. It contains two wires, data and power, that deliver both power and data to the devices. The principle is that the power flows from the Power Sourcing Equipment (PSE) to the Powered Device (PD) through the data wires, but the data and power are separated. The voltage applied to the devices is usually 48VDC, and the power delivered to the devices can be anywhere from 4.5W to 30W.

In order for PoE 14-137 to work, both the PSE and the PD must support the PoE standard. The PSE is usually an Ethernet switch or router with PoE capabilities. The PD must have a compatible power injector which is typically located in the form of an adapter, module, or PoE splitter/inline adapter, depending on the type of device being powered. Additionally, the type of cables used for powering PoE devices must also be PoE compliant, as not all Ethernet cables support the PoE technology.

PoE 14-137 offers a convenient and cost-effective solution for powering a wide range of network devices. It has become an increasingly popular technology and is now widely used for powering VoIP phones, access points, IP cameras, and many other devices. By using PoE 14-137, organizations can save time and money by simplifying the process of powering their network devices.

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