Expand the Capabilities of Your Cabling System in Data Center

Power transmission over Ethernet or English. Power over Ethernet, or PoE for short, is a networking technology that transfers DC power to a connected IP device. Which is a convenient and cost-effective approach that uses the same cable for both data and power. Since 2003, when PoE technology was first standardized and allowed the transmission of power up to 15W, its development did not stop. In 2019, the technology came to the point that it allows you to transfer up to 90W from the source and is often referred to in the documentation as 4-pair PoE or 4PPoE.

How PoE Implementation Can Help?

  • Save time and money - no need to install power cables for power lines. At the same time, for the installation of lines of a structured cabling system, personnel who have a permit to work with electrical installations are not required and they can be laid almost anywhere.
  • Flexibility - there is no tethering to the electrical outlet, allowing these devices to be mounted where they are needed most and easily moved when needed.
  • Safety - the standard describing PoE technology includes measures to ensure safe operation, both in terms of connected equipment and in terms of protecting users from the effects of power supply.
  • Reliability - PoE power is transmitted from a central point and universal devices compatible with each other are responsible for its generation, and not a set of various distributed sources with different types of adapters. In addition, the redundancy of such power is easy to provide with a UPS and can be remotely controlled for easy shutdown or reset of devices.
  • Scalability - Having power on the network means setting up and distributing network connections is simple and efficient.

However, the introduction of power transmission technology must be approached responsibly.

In addition to PoE standards such as IEEE 802.3bt Type 4 Class 8 (90W), industry standards for structured cabling are also worth looking at. It is very important to make sure that both sets of standards were taken into account during the design and installation of the system and the implemented SCS fully complies with them.

Also read: - Tips to Protect Your Data Center Cables From Moisture

PoE Implementation Guide

Short-term strategy of the type “My current requirements” Your cabling system may not support new technologies if you consider only current PoE needs and do not reserve for the future when implementing it ... Some categories of cabling systems can handle even the most demanding PoE devices, while others do not ...
Using copper-plated cables Substandard cable products on the market can pose a security risk. This is even more important when you need to carry power across all 4 pairs of your cable. The resistance of a solid aluminum cable is about 55% higher than that of a copper cable of the same diameter. The result of this resistance is a significant increase in temperature inside the aluminum cable and a decrease in voltage across the connected device.
Laying more than 24 cables in one bundle The more cables are laid in one bundle, the greater the temperature rise. The impact of increased temperature on a cable can be very significant, especially when transmitting power above 60W - a common occurrence when bundling cables used for PoE transmission. - Heating increases insertion loss and decreases overall performance - Heating accelerates cable wear and tear and affects cable integrity, which can ultimately endanger buildings and visitors.
Ignoring design rules and using long patch cords Patch cords used to connect ports of active equipment and at workplaces, as a rule, are made of cable with stranded conductors, which is in accordance with the requirements of international SCS standards such as ISO / IEC 11801, ANSI / TIA, CENELEC and AS / NZ requires a line derating factor to be applied.
Exceeding acceptable standards The more the temperature of the entire bundle rises, the hotter its central part becomes. This leads to a significant increase in insertion loss and a decrease in signal strength. The result is a significant increase in the number of bit errors and a drop in network performance.

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