Wirnet iBTS
Document title : Installation and
Maintenance Manual
Version : 2.0
Author : SNI
Date : 04/12/2018
Classification
This document is the strict property of Kerlink and shall not be either copied nor sent without express
written authorization of Kerlink
Internal Use
Kerlink m2m technologies reserved rights
Confidential
Kerlink – 1 rue Jacqueline Auriol – 35235 THORIGNÉ-FOUILLARD
Page 72 / 221
Strict confidential
1.6
Power supply
1.6.1
PoE injectors
One Midspan PoE injector among the following list is provided with each Wirnet iBTS:
Indoor AC/DC Midspan PoE injector 30W
Indoor AC/DC Midspan PoE injector 60W
Indoor DC/DC Midspan PoE injector 30W
Indoor DC/DC Midspan PoE injector 60W
Outdoor AC/DC Midspan PoE injector 30W
Outdoor AC/DC Midspan PoE injector 60W
Outdoor DC/DC Midspan PoE injector 60W
Detailed characteristics of those references are done on the following chapters.
Customers have to select the good reference during the ordering.
The Midspan PoE injector 30W is dedicated to the Wirnet iBTS Compact.
The Midspan PoE injector 60W is dedicated to the Wirnet iBTS gateways.
Both versions can be declined for indoor applications or outdoor applications.
AC/DC vs. DC/DC choice is application dependent.
In case only 110/220VAC is available, AC/DC solution is preferred.
In case additional DC backup (type 48V) is available, DC/DC solution may be envisaged.
Note 1:
beware of the operating ambient temperature of the Midspan PoE injectors. Output
power derating over +40°C has to be carefully considered to insure proper supply of the
Wirnet iBTS. If the ambient temperature range cannot be guaranteed below +40°C, the
Midspan PoE injector may have to be re-dimensioned. A 60W PoE injector could be then
recommended instead of a 30W PoE injector.
Note 2:
the power supply of the Wirnet iBTS must be a limited power source. All the PoE
injectors listed below must then considered as limited power sources.
1.6.1.1
PoE injectors recommendations
Kerlink recommends using only the validated references of the provided list.
Some POE solutions may not be compatible with the Wirnet iBTS.
This is particularly true for specific DC application where the Wirnet iBTS is in power supply
colocation with other equipments. In such cases, some equipment may have connection
between earthing system and the power supply connection (either “+” or “-“ wire)
dependent if the application is in +48VDC or -48VDC. As the electrical ground of the Wirnet
