Power Reach Installation Planning

PoE Ethernet Extenders

There are various ways to take advantage of the advanced power capabilities of Perle eXP PoE Ethernet Extenders when planning deployment with PoE devices. In the scenarios below, each table provides guidance on the relationship between the maximum cable distance and the available power at the remote site.

Actual distance and rates experienced will depend on the condition and gauge of wire used. This Rate/Reach table applies to 24 AWG ( 0.5 MM ) twisted pair wiring on RJ45 (RJ) and terminal block (TB) models of Perle eXP PoE Ethernet Extenders. Total power budget is also limited by the amount of power available from any local AC Adapter used.

1. PoE Extension – Long Reach

For long reach applications, the remote extender provides power to PoE devices such as IP cameras and Access Points. A locally attached AC Adapter is used. There is no effect on the level of PoE power delivered to the PoE Powered Device (PD).

PoE Long Reach Extention Diagram

eXP 10/100 and 10/100/1000 PoE Ethernet Extenders
Maximum Distance A to B
( Feet )
Maximum Distance A to B
( meters )
Available Power Budget per PSE
port C( watts )
500 152 15.4
1000 305 15.4
1500 457 15.4
2000 610 15.4
2500 762 15.4
3000 914 15.4
3500 1000 15.4

eXP-S1110PE PoE+ Gigabit Ethernet Extenders
Maximum Distance A to B
( Feet )
Maximum Distance A to B
( meters )
Available Power Budget per
PSE port C ( watts )
500 152 30.00
1000 305 30.00
1500 457 30.00
2000 610 30.00
2500 762 30.00
3000 914 30.00
3500 1000 30.00

2. Power over VDSL

When there is a requirement for a PoE PD to be connected over 2-wire twisted pair or coaxial cable and no AC power is available at the remote site, the eXP series can provide power to the remote site over the VDSL Interlink. The remote Ethernet Extender will derive its power parasitically from the line and pass along the remaining power to the PoE device.

Power over VDSL with Adapter Diagram

Alternatively a PoE+ switch or injector can be used to power the local Ethernet Extender.

PoE Long Reach Extention Diagram

* Applicable to eXP-xS1110PE ( PoE+) models used at the remote site
eXP 10/100, 10/100/1000 PoE and 10/100/1000 PoE+ Ethernet Extenders
Maximum Distance A to B Total available Power Budget at remote PSE C ( watts )
Feet Meters Using a power adapter on the local-side extender Using a PoE+ switch connected on a 3 meter CAT5 cable
328 100 15.4, *25.5+ 17
656 200 14.5 13
984 300 9 8
1312 400 6 6
1640 500 4 4

3. Using Power Multiplier Feature

If a 4-pair cable such as CAT5 is used for the VDSL Interlink, the power multiplier feature can be enabled which provides the capability to provide both power and ethernet over longer distances. This is done by providing power over 3 pairs of wires with VDSL data on the 4th pair.

Power Multiplier Feature Diagram

** Applicable to eXP-xS1110PE ( PoE+) models used at the remote site
eXP 10/100, 10/100/1000 PoE and 10/100/1000 PoE+ Ethernet Extenders with Power Multiplier feature
Maximum Distance CAT5 A to B Total available Power Budget at remote PSE C ( watts )
Feet Meters Using a power adapter on the local-side extender Using a PoE+ switch connected on a 3 meter CAT5 cable
328 100 15.4, **25.5+ 17
656 200 15.4, **25.5+ 17
984 300 15.4, **25.5+ 17
1970 600 14.5 13
2950 900 9 8
3940 1200 6 6
4920 1500 4 4

There may be occasions where even though there are no PoE devices on the link, the remote extender simply requires parastic power from its peer extender over the VDSL link.

Power Multiplier Feature without PoE Diagram

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