Power over Ethernet (PoE) is a networking feature that lets network cables carry electrical power over an existing data connection with a single Cat5e/Cat6 ethernet cable. PoE technology relies on the IEEE 802.3af and 802.3at standards, which are set by the Institute of Electrical and Electronics Engineers and govern how networking equipment should operate in order to promote interoperability between devices. https://www.versatek.com/what-is-power-over-ethernet/

1. Definition:
PoE Deployment
Locations:
- Hotels
- Offices
- Enterprise Buildings
IP Surveillance in an Enterprise Building
VoIP in an Office Environment Access Points in a Campus
BUSINESS
Wi-Fi
PoE USE CASESpower
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PoE facilitates the deployment of powered devices in several scenarios.
The following are just a few sample use-cases for PoE.
Outdoor IP cameras give system integrators
the ability to deploy cameras around a
multi-story enterprise building where
electrical circuitry may be absent.
Businesses seeking to save on wired
telephone services switch to VoIP
phone systems.
PoE-capable wireless access points make
it simple to disregard the placement of
electrical circuitry, and place wireless
access points anywhere on a campus.
- Campuses
WHAT IS
PoE?
Power over Ethernet (PoE) is a networking feature that lets network cables carry electrical power over an existing
data connection with a single Cat5e/Cat6 ethernet cable. PoE technology relies on the IEEE 802.3af and 802.3at
standards, which are set by the Institute of Electrical and Electronics Engineers and govern how networking
equipment should operate in order to promote interoperability between devices.
There are currently four PoE standards available:
PoE LIMITATIONSpower
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PoE BENEFITSpower
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DISTANCECOMPATIBILITYPOWERRATES
100m
PoE Switch PoE Camera
100m 100m
PoE Switch PoE Camera
PoE Switch Non-PoE
Device
X
PoE Switch Non-PoE
Device
PoE
Splitter
Max. Watts per port at full capacity:
Total PoE Budget
# of Ports
130 Watts
8 Ports
= Up to 16.25 Watts
per Port
[ ]
equation
Total PoE Budget = 130W
8-Port PoE Switch
Power
Data
PoE
Full Capacity:
8 x 802.3af (15W) PoE Devices
PoE Extender
Connect 2 or more PoE Extenders depending on the
application & lengthen that span to 4,000ft!
PoE STANDARDSpower
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IEEE 802.3af
IEEE 802.3at / PoE+
IEEE 802.3bt / UPoE
IEEE 802.3bt
Type 1
Type 2
Type 3
Type 4
15.4W
30.8W
60W
90-95W
IEEE Extension Type Power Budget per Device
Dimmer
Sensor
Control
Low Voltage
Network
Software
Controled
PoE LED LIGHTINGpower
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PoE ENVIRONMENTS
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PoE APPLICATIONSpower
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PoE Switch
PoE Switch
PoE Injector
PoE Extender
PoE Hub
PoE Splitter
Switch
Power
PoE Lighting
PoE Lighting
Non-PoE Device
PoE Camera
PoE Injector
Switch
Power
Switch
Power
Power
Data
PoE
Power
1
2
3
4
1
2
3
4
PoE Devices
PoE
installation costs
are far less than the cost
of installing traditional wiring,
and the operating costs are far
more efficient. One twisted pair
cable delivers both data and
power to devices. Existing
copper from legacy phone
systems can also be
repurposed.
Reduced Cost Safer Installation Responsive Data-Gathering Productivity
PoE
Type 3 voltages are
typically less than 60
volts, and Type 4 less than
90. Conduits and metal
cladding are not required. The
straightforward use of one Cat5e
or Cat6 Ethernet cable,
remove the need for a
licensed electrician.
PoE
devices adapt to
changing environments.
They can be easily moved
and reconnected at the
switch level and easily
integrate into changing
network configurations.
PoE is plug and play.
Analytics software
can help facilities groups
to determine when an area
is occupied & when LED
lighting & HVAC components
may be turned off.
Operational costs can be
much lower based on
actual usage.
LED
lighting systems,
because of 2-way data
capabilities, can be
programmed to follow spectrum
and frequencies found in nature.
Employees can enjoy greater
health, alertness, creativity,
collaborative opportunities,
and a sense of
well-being.
PoE Smart Home Commercial PoE Industrial PoE
PoE smart homes are connected homes providing
optimal living with centralized management
capabilities for lighting, temperature, energy,
home entertainment, IP security, and other
devices such as appliances and door locks.
PoE smart technologies pave the way for better
lighting and energy economy by turning off
climate and lighting systems on unoccupied
floors. Automated access points limit access to
rooms, floors, and facilities 24/7 through use of
retinal scanners.
Industrial PoE applications help developers stay
competitive. Sensors and IP cameras allow
managers to observe manufacturing floors to
monitor automated equipment and employee
behaviors. PoE also facilitates large data transfer
and power distribution to key areas.
PoE lighting is a low power, high performance LED
lighting network technology comprised of fixtures and
sensors, and is managed remotely using intelligent
software. The control module communicates data
signals and power over twisted pair cable.
PoE Injector PoE Splitter
PoE Extender
PoE Hub PoE Switch
KEY
& SOLUTIONS
This section will further expand these 3 limitations and how to adjust for them:
Splitting the power from the data & feeding
it to a separate input that a non-PoE
compliant device can use.
When purchasing, you
want to be sure the max.
power budget of a switch
is sufficient for the devices
it supports. Identify the
manufacturer power
spec/budget per port to
know if the end device will
receive required power
through that switch.
PoE lighting
systems are networks
consisting of PoE
switches, lighting controls,
sensors, and LEDs
connected to LANs
over twisted pair
cables.

2. PoE Infographicpower
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PoE 802.3af Standard
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PoE 802.3at Standard
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WHAT IS
PoE?
Power over Ethernet (PoE) is a standard that allows Ethernet cables to simultaneously transmit data and power
using a single network cable. This allows system integrators and network installers to deploy powered devices in
locations that lack electrical circuitry. PoE eliminates the expense of installing additional electrical wiring which
entails hiring professional electrical installers to ensure that strict conduit regulations are followed.
There are currently two PoE standards available:
The 802.3at standard transmits 30 watts of power.
*Due to power dissipation, powered devices reliably receive 12.95 watts of power.
The 802.3af standard transmits 15.44 watts of power.
Power Sourcing Equipment
Powered Device
Power Sourcing Equipment
Power +
Data
Power +
30W
15.44W
12.95W
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