In today’s interconnected world, a stable and efficient power supply for devices communicating via Ethernet is crucial. Power over Ethernet (PoE) is a technology that allows both data and power to be transmitted over the same Ethernet cable. This offers a range of advantages, especially in networking, installation, and maintenance of devices that require both power and data, such as IP cameras, VoIP phones, Wi-Fi access points, and more.
At HN Electronic, we offer a variety of PoE solutions that cover different IEEE standards as well as non-IEEE-based solutions to meet your needs for efficient and reliable power supply.
What is Power over Ethernet (PoE)?
PoE is a technology that enables electronic devices to be powered through the Ethernet cable, eliminating the need for separate power lines. This is particularly useful in environments where installing power cables would be difficult or expensive, such as with IP cameras, networking devices, or access points. With PoE, devices can be powered easily via the standard network cable, simplifying cabling and reducing installation costs.
PoE Standards: IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt
PoE comes in different power classes that vary in the amount of energy they can transmit over the Ethernet cable. The key standards are:
- IEEE 802.3af (PoE) – 15.4W/Port
The IEEE 802.3af standard, also known as PoE, delivers up to 15.4 watts per port. This is sufficient to power a variety of low-power devices such as VoIP phones, smaller IP cameras, or wireless access points. This solution offers a cost-effective way to integrate low-power devices.
Advantages:
- Ideal for low-power devices.
- Cost-effective solution for basic device installation.
- Easy to integrate into existing Ethernet networks.
- IEEE 802.3at (PoE Plus) – 30W/Port
The IEEE 802.3at standard, also known as PoE Plus, provides a higher output of up to 30 watts per port. This allows for powering more demanding devices, such as IP cameras with PTZ functionality (Pan, Tilt, Zoom), higher-power Wi-Fi access points, or video phones. PoE Plus offers improved power delivery without requiring additional power connections.
Advantages:
- Higher power output for devices with greater energy needs.
- Flexibility in device selection.
- Efficient solution for larger devices and more demanding applications.
- IEEE 802.3bt (PoE++ or 4PPoE) – 60W to 90W/Port
The IEEE 802.3bt standard, also known as PoE++ or 4PPoE, enables power delivery of up to 60 watts (Type 3) or 90 watts (Type 4) per port. This high power output is ideal for demanding applications such as high-resolution IP cameras, video conferencing systems, digital signage, or even small servers and networking devices. PoE++ can now power devices that previously required a separate power source.
Advantages:
- High power output, ideal for energy-intensive devices.
- Reduces the need for separate power connections.
- Perfect for installing high-resolution IP cameras or other high-power devices.
Non-IEEE PoE Solutions
In addition to the official IEEE standards, there are also non-IEEE PoE solutions designed for specific applications where a particular power requirement doesn’t fully align with IEEE standards. These solutions offer greater flexibility and can be customized to meet specific needs, such as for devices that require individual power levels but don’t support standards like IEEE 802.3af or 802.3at.
Advantages:
- Flexibility in adapting to specific requirements.
- Ability to power devices that deviate from standard IEEE definitions.
- Useful for custom applications and smaller devices.
PoE at HN Electronic: Your Experts for Power Supply via Ethernet
At HN Electronic, we offer a wide range of PoE solutions tailored to your specific needs. Whether you’re powering a small low-power device or a demanding system with high power requirements, we have the right products for you. Our solutions not only offer flexibility and efficiency but also the necessary safety required for operating devices in professional environments.
Visit our website to learn more about the various PoE products and find the solution that suits you best.
Conclusion:
Power over Ethernet (PoE) is an extremely efficient technology that enables both data and power to be transmitted over a single cable. With the IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt standards, as well as non-IEEE PoE solutions, PoE offers a flexible, cost-effective, and secure way to power devices. At HN Electronic, you’ll find a variety of solutions that are perfectly tailored to your requirements, simplifying your installation and reducing operating costs.
