Poe Power Output; Protection Mechanism - KTI Networks KGS-2423 Installation Manual

Remark: IEEE 802.3af standard is often abbreviated as "PoE". IEEE 802.3at PoE standard is also known as
"PoE+" or "PoE plus".
PoE DC IN Contacts
Vpoe+ input
Vpoe- input
Chassis ground for connecting earth

2.9.2 PoE Power Output

PoE power on Port RJ-45 jack
Pin 4,5 Vpoe+ pins
Pin 7,8 Vpoe- pins
Cable Cat.5 or better
Distance 100 meters max.
PoE Class Individual Rating
Standard
PoE Type 1 Class 0
PoE Type 1 Class 1
PoE Type 1 Class 2
PoE Type 1 Class 3
PoE+ Type 2 Class 4
The maximum total of PoE power
Standard PoE Class
PoE Class 0 ~ 3
PoE+

2.9.3 Protection Mechanism

Event
Incompliant PD discovery PoE Shut down
PD disconnection
Over voltage
Under voltage
1
PD over load *
Class Power output max.
Voltages
+45 ~ +57VDC
Class 4 +51 ~ +57VDC
Action
PoE Shut down immediately
PoE Shut down immediately
PoE Shut down immediately
PoE Shut down
15.4W 338mA Vpoe
4W 94mA Vpoe
7W 150mA Vpoe
15.4W 338mA Vpoe
30W 562mA Vpoe
Power max.
15.4W
30W
-20-
Max. current
48VDC
@
48VDC
@
48VDC
@
48VDC
@
54VDC
@
Total (24 ports)
15.4 x 24 = 370W
30 x 24 = 720W
Limit
425mA
425mA
425mA
425mA
850mA