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How much PoE do I need?

July 26, 2024

Latest company news about How much PoE do I need?

Background

 

Power over Ethernet(PoE) now is popular now due to its easy availability and affordable prices.

And as technology evolves, more and more IP-based devices are supporting PoE protocols.

This article is about to introduce some PoE-related queries based on the users.

It will expand to different aspects of PoE issues.

 

Discussion

 

 

  Devices Application
Home Users

VoIP phones

Wireless IPs

Routers

IP cameras

Those IP-based units are well serving small-area monitoring and networking transmission.

Cost-effective PoE switches are required to support the easy cabling and use.

Professional Users

PTZ cameras

High-performance WAPs

Digital signage

Facility monitoring controls

It usually involves public facilities when those high-performance PoE devices

are in function. Stability and durability is crucial.

In most cases, specialists are sent to handle connection, and cabling for better stability

 

Based on this, let's look at some common questions in a PoE system.

 

 

For different powered devices, the required power budget significantly varies.

1. First you need to get the specification manual of your device

Look at the power it requires.

Take Hikvision camera DS-2DE5220IW-AE for example.

 

latest company news about How much PoE do I need?  0

 

To be receiving power from a PoE switch or PoE media converter, the powered device has to support PoE protocols, it often goes IEEE 802.3af or IEEE 802.3at in the power description.

Here there is just 24V(non-standard PoE), so it cannot be powered directly/

To avoid this, Olycom has developed a powerful a voltage auto-sensing PoE network switch OM728W-PSEA-GE.

 

latest company news about How much PoE do I need?  1

 

Its 8 port 10/100/1000Mbps adaptive RJ45 supports active IEEE802.3af/at and passive 24V PD.

So it could be powered if you have an Olycom model OM728W-PSEA-GE without extra accessories or trouble.

 

2. Calculate the maximum power your device needs, sometimes it directly shows the value.

You still need to look at the power description, and get the values of input voltage(typically 12V/24V/48V) and ampere to start the devices.

Power=Voltage times Ampere

Then the power budget for the devices is available,

 

After getting the power budget number, you need to choose an affordable PoE switch.

On the market now, there are industrial and commercial-grade switches with different specifications.

Lets still do an analysis for different users.

 

  Type Fiber Network PoE Port Cost Usage
Home Users Commercial Usually no need 100M/1000M/2.5G 4&8 Cheap Plug-and-Play, without extra configuration
Professional Users Industrial Usually need
1G/2.5G/10G or higher
100M/1000M/2.5G/10G 4&8&16&24&48 Expensive Complicated, need professional configuration

 

Conclusion

 

We focused on some simply PoE queries based on different users and concluded some useful points before selecting and using a PoE device.

Olycom has been focus on CCTV security solutions and manufacturing fiber optic devices.

Please come to us if you have any queries or product requirements.

Get in touch with us
Contact Person : Sales
Tel : 8618088882285
Fax : 86-755-83129773
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