PoE lighting Type 1 is mainly used to support low power devices such as static surveillance cameras, VoIP phones, wireless access points. PoE Type 2 is mainly used to support PTZ cameras, video IP phones, alarm systems. PoE Type 3 & 4 is designed to boost network power to high-power devices such as video conferencing systems, multi-radio wireless access points, LED lights, laptops, televisions, etc.

Passive or active PoE

Active PoE is standard PoE which refers to any type of PoE which determines the proper voltage between the PSE and PD. Passive PoE is non-standard PoE. It can also provide power over the Ethernet line, but without the handshake process. Passive PoE always sends electrical current through the Ethernet cable at a certain voltage. To learn more about passive and active PoE, see the article Active and Passive PoE Switch: Which Should We Choose?

PoE types and wattage

Considering the power provided by the network cable, PoE can also be classified into Type 1, Type 2, Type 3, and Type 4. PoE Type 1 provides up to 15.4 watts of power. PoE Type 2 is compatible with PoE Type 1 and provides up to 30 watts. PoE Type 3, also known as PoE++ and UPoE, provides 60 watts of power. PoE Type 4, however, is higher power PoE that supports power up to 100 watts. The figure below illustrates common applications of the different types of PoE.

How to integrate PoE technology into the network?

The PoE power supplied in the network usually comes from three different sources: PoE switch (switch), PoE injector and PoE splitter. The PoE switch is the easiest way to power PDs. All you have to do is connect the Ethernet cables from a PoE network switch port to the terminal’s PoE devices.

It has an external power supply and is responsible for supplying data from a network switch that is not PoE compatible. PoE splitters also provide electrical power, but they do so by separating power from data and sending it to a separate input that a non-PoE capable device can use. They are commonly used to deploy remote non-PoE devices without any nearby AC outlets in the network.

1. What is the Power over Ethernet voltage?

Power is transferred over the Ethernet cable at a voltage between 44V and 57V DC, and is typically used at 48V. low enough to be considered safe.

2. What data speed does Power over Ethernet provide?

 

In general, PoE can provide 10/100/1000Mbps data rate over Cat5, Cat5e and Cat6 cables. Today, thanks to the generalization of the IEEE 802.3bt PoE standard and PoE++ technology, Power over Ethernet should offer speeds of 2.5 Gbps to 5 Gbps over 100m with an immediate view towards 10 Gbps in the future. close.

3. Are there any limitations with Power over Ethernet?

 

Yes, technology has its limits. First, the range is restricted to 100 meters, which limits the viable locations where users can use an IP device remotely. Second, a single PSE such as a PoE switch typically connects to multiple PDs. If the PSE fails, all PDs will stop working. It is therefore important to purchase qualified switches from a reliable supplier. Additionally, you may also consider connecting the PSE to an uninterruptible power supply.

4. What are PoE injectors and terminals?

 

The PoE injector serves as an intermediate device between a non-PoE switch and the PoE-powered device. The PoE network switch directly connects and supplies PoE power and data to a PD. These PoE switches provide power over the data pairs, also known as PoE Mode A. The PoE injector provides power using pins 4-5 and 7-8, also known as PoE mode B

PoE, PoE+ or PoE++ switch: Which one to choose?

PoE, or Power over Ethernet, is a reliable technology that saves time and money by delivering power and data securely over the same Ethernet cable for local area networks (LAN). In today’s market, if you consider the types of Power over Ethernet switches, you can find that there are PoE, PoE+ and PoE++ switches . What are their particularities and differences?

What is PoE and what is a PoE switch?

What is PoE? PoE technology or LED lighting was formalized in the IEEE 802.3af standard in 2003. In accordance with this standard, PoE allows a PD (powered device) such as VoIP telephones to receive up to 12.95 W of PoE voltage, using only two of the four twisted pairs available for Ethernet cabling. And what is a PoE switch? PoE switch, or Power over Ethernet switch, is an application of PoE technology. It is a kind of PSE (power sourcing equipment), which can provide power supply and network connectivity via Ethernet cable to powered devices. In general, an 802.3af switch supports a maximum power consumption of up to 15.4W per PoE port with a voltage range between 44V and 57V. The voltage range of DPs connected to the PoE power switch is 37V to 57V.

 

PoE, PoE+ or PoE++ switch

What is PoE+ and what is a PoE+ switch?

PoE+ technology ( IEEE802.3at standard ) is an upgrade of PoE technology, which was released in 2009. To have desired applications, PDs like wireless access points in the market tend to require a PoE power supply greater than 12.95W. To solve this problem, PoE+ technology, which can support high power consumption, has been introduced.

Similar to a PoE network switch, the PoE+ switch also provides power over two pairs, but it also adds an additional voltage capable of supplying a powered device with up to 25.5W with a voltage range between 42.5V and 57V. The maximum voltage provided by each port of the PoE+ switch is 30W , with a voltage range of 50V to 57V .