User's Manual
LTEeNodeBIndoorHardwareInstallationRRHhead–48Vdcpowercablinginstallation
RRHhead–48Vdcpowercablinginstallation
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■
■
ThissectioncontainstheprocedureforinstallingtheRRHhead–48Vdcpowercables.
RRH–48VdcpowerwhenusingaBCUII
WheninterfacingwiththeBCUII,thecustomerisresponsibleforprovidingdcpowertothe
RRH.ThecustomerhastheoptionofusingtheMotorola–48VPDUorprovidingtheirown
PDUfunction.Thefollowinginformationisareminderofthecustomersresponsibilities.The
customerisultimatelyresponsibletoensurethatallgroundingguidelinesandCustomer
SuppliedPowerCabinetorservicebayconnectionsmeetlocalelectricalcodes.Thefollowing
procedureassumesthatthecustomerisusingtheMotorolasuppliedRRHdcpowercables.
IfthedcpowercablelengthbetweentheCustomerSuppliedPowerCabinetorservicebay
andtheRRHexceeds3meters,verifythatthepowersourcemeetsConductedEmissions
requirementsfromETSIEN301489-1Clause8.3DCPowerInputandOutputPorts.This
vericationistomaintaintheregulatorytypeapprovalrequirementforthosemarketsrequiring
aCEmarkontheequipment.
Propersafeguardsmustbeinplacetoinsurecompliancewithregulatoryspecicationsforthe
regionoftheinstall.TwoareasofconcernareElectromagneticInterference(EMI)andSurge
protection.
Circuitbreakerfordcoutputtohead
ForcircuitbreakerandwiregaugerequirementsforRRHproducts,seeDCsupplyequipment,
Maincircuitbreaker ,andDCinputcableonpage2-7.
Connecting–48VdcPower
TheConnecting–48VdcPowersectionprovidesthefollowinginformationonroutingtheloose
endsofthewirestothesite–48Vdcsourceforconnectiontothesource.
Tominimizecurrentimbalancebetweenthefeed(-V)andreturn(+V)wiresusedinthecable,
ensurethatthewiresize,length,andgaugeofeachwireusedinthecablearethesame.
NOTE
ThissectionappliesforsiteswithoptionalMotorola-providedPDUonly .
68P09308A55-66-19
FEB2010