User's Manual

Connecting–48VdcPowerChapter6:CablingoftheRRH
Requiredmaterialsandtools
Thefollowingmaterialsandtoolsarerequired:
•One–48VdcPowerInputCable-customersupplied.
•Wirestripper/cutters.
•DigitalMulti-Meter(DMM)FlukeModel8062AwithY8134testleadkitorequivalent;used
forprecisionDCandACmeasurements,requiring4-1/2digits.
Powercablingandtiedownrequirements
TocontroltheinductanceattheEnodeBDCpowerinputduetothespacingbetweenwiresused
inthe–48VdcPowerInputCable(DC),bindthefeed(-V)andreturn(+V)wirestogether
atintervalsofonemeterorless.
Connecting–48Vdcpowertothe–48VdcLTEEnodeB.
PerformthestepsinProcedure6-8toconnect–48Vdcpowertothe–48VdcLTEEnodeB.
WARNING
•Donotwearawriststrapwhenservicingthepowersuppliesorpowerdistribution
cabling.
•EnsurethatthesourcefortheDCpowerisintheOFFposition.
•EnsurethatallthePDUcircuitbreakersareOFF .
Forthe–48VdcRemoteRFbasedeNodeBLTEsystem,thecustomerhastheoptionofusingthe
Motorola-provided–48VdcPDUortheirowncircuitbreakers.IftheMotorola—providedPDUis
used,performthestepsinProcedure6-8toinstallandconnectthePDU.WireAWG/breaker
informationisprovidedWireAWG(min90Cinsulationrating)andcircuitbreakersizingfor–48
VDCRRHsystemswithoutPDUoption(customer-providedPDUfunction)onpage2-9.
Procedure6-8Connecting–48VdcPower
1
EnsurethatthegroundcableisconnectedbetweentherackandtheMaster
GroundBar.
2
Ensurethatthe–48VdcPowerInputCableisnotconnectedtothemain–48
Vdcpowersource.Turnoffthemain–48Vdcpowersource.Conrmthat
thepowerisswitchedOFFusingaDVM.
3
ThePDUissuppliedwith2-Holecrimponlugsfor1/0AWGstandardor2
AWGhigh-strandcountexcable.Ifyourequireanothertypeofcable,order
newlugsasneeded.EnsurethatthelugsmeetthecriteriainTable3-2.
Continued
6-2068P09308A55-6
FEB2010