K U S A
KUSA
1107 SEWillow Place
Blue Springs, Missouri 64014
Telephone: (219) 595 -2631
(816) 988 -7861
FAX: (480) 287 - 8605
EMAIL: Sales@KUSA1.co

Tom West – Sales & Engineering
• Ray Renaud – Director Channel Sales

KUSA POE Switches with CYBER-
SECURE Video & 802.3az (Green
Scheduling)

K U S A

CYBER-SECURE VIDEO
Jumbo Frame & Clean Code Technology
Redundant Trunk Link (RTG) Support
QOS/PRIORITY Classes by Application
HD Camera Ready
802.3az (Green Scheduling)
Power Saving Operations
Industrial Ethernet Switches
Temperature Hardened
5 Year Warranty
Redundant Uplinks
Managed & Unmanaged
All Gigabit Ports
Full 30 Watts on All Ports

P ower o ver E thernet allows Ethernet networked user devices to be powered over the same 4-pair UTP that provides the network signal
Power is 48 volt DC, up to 25.5 Watts at the Powered
Device (PD) as per the new 802.3at standard
Compatible with all networks, up to Gigabit Ethernet which uses all four pairs for transmission

Power over Ethernet is a mechanism for supplying power to network devices over the same cabling used to carry network traffic.
PoE allows devices that require power, called Powered Devices
(PDs), such as IP telephones, wireless LAN Access Points, and network cameras to receive power in addition to data, over existing infrastructure without needing to upgrade it.
This feature can simplify network installation and maintenance by using the switch as a central power source for other network devices.
POE Ethernet Switch is commonly called: PSE (Power
Sourcing Equipment)

Some of the advantages of PoE include:
• A single cable between switch and Powered Device (PD)
• No separate power installation/ connection needed for PD's
• Simplified installation and space saving
• Device placement is not limited to nearby power sources
• PD's can be easily moved to wherever there is LAN cabling
• Safety - no mains or primary voltages anywhere
• A UPS can guarantee power to devices even during power failure
• Devices can be shut down or reset remotely
• Little configuration or management required

• VoIP phones
• Wireless access points
• Remote Sensors
• Digital clocks
• Webcams
• Security Cameras, including PTZ
• Intercoms
• Building Access systems
• Wimax Radios
• Plus others…

The PoE IEEE 802.3af
IEEE Standard Approved
June 2003.
802.3af
Standard Specifes 15.4 Watts (PSE) with 12.95 Watts (PD) , delivered at 100 Meters
The PoE IEEE 802.3at
IEEE Standard Approved
2009.
802.3at
Standard Specifes 34.2 Watts (PSE) with 25.50 Watts (PD) , delivered at 100 Meters

Property 802.3af (802.3at Type 1) 802.3at Type 2
Power available at PD
(DELIVERED POWER)
Maximum power delivered by
PSE (LAUNCH POWER)
Voltage range (at PSE)
Voltage range (at PD)
Maximum Current (Power)
12.95 Watts
15.40 Watts
44.0–57.0 Volts DC
37.0–57.0 Volts DC
350 mA (milliamps)
25.50 Watts
34.20 Watts
50.0–57.0 Volts DC
42.5–57.0 Volts DC
600 mA per mode (milliamps)
Maximum Cable Resistance 20 Ω (Category 3) (Ohms) 12.5 Ω (Category 5) (Ohms)
Power Management
Three power class levels negotiated at initial connection
Four power class levels negotiated at initial connection or 0.1 W steps negotiated continuously
De-rating of maximum cable ambient operating temperature
Supported cabling
None
Supported modes
Category 3 & Category 5 / 5E / 6
Mode A (endspan), Mode B
(midspan)
5 ° C with one mode (two pairs) active
Category 5
Cable)
/ 5E / 6 (Gigabit Rated
Mode A, Mode B

PoE requires little configuration or management.
The PSE automatically determines whether a device connected to a port is a powered device or not, and can determine the power class of the device.
The PSE can supply up to 25.5 watts of power (at
48 Volts) to the PD device, while at the same time providing standard Ethernet network connectivity.

The first step for PSE equipment (an Ethernet switch for example) is to ascertain whether a device plugged into a port is a valid
Powered Device (PD). No power is sent down the cable until a signature check is completed.
The IEEE 802.3at / af standard for device detection involves applying a DC voltage between the transmit and receive wire pairs, and measuring the received current.
A PSE will expect to see approximately 25K Ohm resistance and
150nF capacitance between the pairs for the device to be considered a valid PD.
A range around these values is specified in the IEEE 802.3ad
standard.
The PSE will check for the presence of PD's on connected ports at regular intervals, so power is removed when a PD is no longer connected.

Once a PD is discovered, a PSE may optionally perform PD classification by applying a DC voltage and current to the port. If the
PD supports an optional power classification it will then apply a load to the line to indicate to the PSE the classification the device requires.
Any unclassified PD is considered to be a class 0 device.
The IEEE 802.3at
standard supports delivery of up to 25.50 Watts per port (at the PD) that may be used to deliver power to PoE devices.
The maximum power consumed by a PD, as specified by the standard, is 25.50 Watts.
The PSE (POE Switch Port) provides the 'extra' power (up to 34.2 watts) to compensate for line loss through the copper (resistance). This factor is calculated on a maximum cable length of 100 Meters

An Ethernet cable (CAT5 / 5E / 6) has four twisted pairs (8wires), but only two of these are used for data transfer under the
802.3af standard.
The spare pairs are used. In this case the unused pairs are used to transfer the power.
The data pairs are used. Since Ethernet pairs are transformer coupled at each end, it is possible to apply DC power to the centre tap of the isolation transformer without upsetting the data transfer.
The IEEE 802.3af standard did not allow both sets of wires to be used, the new 802.3at standard allows their use.
Different vendors PSE equipment may use one or other of the methods to supply power depending upon the PoE engineering design.
So the PSE applies power to either the spare wires , data wires or both.
The PoweredDevice (PD) must be able to accept power from every option depending upon the class of the device.
The voltage supplied is nominally 48V, and a maximum of 25.50
Watts of power is available at the Powered Device. (PD)
An isolated DC-DC converter transforms the 48V to a lower voltage more suitable for the electronics in the Powered
Device.

4
0
1
2
3
Power Levels Available
Class Usage
Classification current
[mA]
Power
Range
[Watt]
Default
Optional
Optional
Optional
0–4
9–12
17–20
26–30
0.44–12.94
0.44–3.84
3.84–6.49
6.49–12.95
Class
Description
Classification unimplement ed
Very Low power
Low power
Mid power
Valid for 802.3at
(Type 2) devices, not allowed for
802.3af devices
36–44 12.95–25.50
High power

Stage Action
Volts specified
[V]
802.3af
802.3at
Detection PSE detects if the PD has the correct signature resistance of 19–26.5 kΩ
(BOTH) 2.7–10.0
Classification PSE detects resistance indicating power range
Mark 1
Class 2
Mark 2
Startup
Normal operation
Signals PSE is 802.3at capable. PD presents a 0.25–4 mA load.
PSE outputs classification voltage again to indicate 802.3at capability
Signals PSE is 802.3at capable. PD presents a 0.25–4 mA load.
Startup voltage
Supply power to device
—
—
—
> 42
37–57
(BOTH) 14.5–20.5
7–10
14.5–20.5
7–10
> 42
42.5–57

Reduced cabling costs. Adding power circuits at the point of need can be a significant expense, This way one cable provides both power and data. Cameras and access points & sensors can be moved and wired easily.
Reliability associated centralized supplied power. Circuit outage at a desk will take out a VOIP set powered locally. Using uninterruptible power supplies (UPS), Voice over IP (VoIP) telephones can now be deployed without worrying about them not functioning during a power outage.

KY-24PES30WM - 28 Port 30 Watt (802.3at) Managed Power Over Ethernet Gigabit
Switch
24 PSE 10/100/100-BaseT(X) Copper Ports and 4 SFP 1000Base(X) Sockets, CYBER-
SECURE Video
Automatic
– Silicon Based DOS/DDOS Protection,
Automatic Camera Restart
AC Power Supply: 110-220 Volts AC / 50-60Hz (With 802.3az – Green Scheduling)
KY-16PES30WM - 20 Port 30 Watt (802.3at) Managed Power Over Ethernet Gigabit
Switch
16 PSE 10/100/100-BaseT(X) Copper Ports and 4 SFP 1000Base(X) Sockets, CYBER-
SECURE Video
Automatic
– Silicon Based DOS/DDOS Protection,
Automatic Camera Restart
AC Power Supply: 110-220 Volts AC / 50-60Hz (With 802.3az
– Green Scheduling)
KY-8PES30WM 12 Port 30 Watt (802.3at) Managed Power Over Ethernet Gigabit
Switch
8 PSE 10/100/100-BaseT(X) Copper Ports and 4 SFP 1000Base(X) Sockets, CYBER-
SECURE Video

KY-24PES30WU - 28 Port 30 Watt (802.3at) Managed Power Over Ethernet Gigabit
Switch
24 PSE 10/100/100-BaseT(X) Copper Ports and 4 SFP 1000Base(X) Sockets, CYBER-
SECURE Video
AC Power Supply: 110-220 Volts AC / 50-60Hz / Rack Mount
KY-16PES30WU - 20 Port 30 Watt (802.3at) Managed Power Over Ethernet Gigabit
Switch
16 PSE 10/100/100-BaseT(X) Copper Ports and 4 SFP 1000Base(X) Sockets, CYBER-
SECURE Video
AC Power Supply: 110-220 Volts AC / 50-60Hz / Rack Mount
KY-8PES30WU 12 Port 30 Watt (802.3at) Managed Power Over Ethernet Gigabit
Switch
8 PSE 10/100/100-BaseT(X) Copper Ports and 4 SFP 1000Base(X) Sockets, CYBER-
SECURE Video
Requires External 50-57vdc / 300 Watt Power Supply / Din Rail or Rack Mount

KUSA POE Switches with CYBER-
SECURE Video & 802.3az (Green
Scheduling)

•
There is a Launch and a Receive Power Level
• Power is sent as 48 volts DC (Direct Current)
• Data and Power travel the same wire pairs
• POE works to a maximum length of 100 Meters
• KUSA PoE has CYBER-SECURE VIDEO (CSV)
• KUSA has Managed & Unmanaged PSE switches
• PD‘s must be 802.3at / af compliant
• The CAT egory of wire MUST be observed
• Category 3 wire will NOT support Gigabit links

•
Managed POE Switches have 802.3 Green
Scheduling (Automatic Restart / Keep Alive Check
• Clean Code Technology (Protects from Viruses /
BOTS
• Automatic Protection (in silicon) from Denial of
Service & Distributed Denial of Service Attacks (No operator Intervention Required
• IP Policing and Port Shutdown based on IP / MAC
Address
• 5 Year Warranty / Temperature Hardened / Fanless

Telephone: (219) 595-2631
• Email: Sales@Kyland-USA.com
• FAX: (480) 287-8605
• Web Site: www.Kyland-USA.com