User's Manual

Chapter4OperationandMaintenance
Table4-3Power-onSteps
ItemPower-onSteps
DCpower
supply
1.Turnontheswitchofthepowerdistributionunit,andcheckwhethertheequipment
outputvoltageisinthenormalrange.
2.TurnontheswitchoftheindoorDCpowerlightingprotectionboxoftheZXSDR
R8978.PowertheZXSDRR8978on,andtestwhethertheRRUinputvoltage
isinthenormalrange.
3.CheckwhethertheBBUindicatorortheRRUindicatorisnormal.
ACpower
supply
1.TurnontheswitchoftheACpowerdistributionunitoftheZXSDRR8978,and
checkwhethertheequipmentoutputvoltageisinthenormalrange.
2.CheckwhethertheBBUindicatorortheRRUindicatorisnormal.
Note:
Toavoidcurrentsurge,youneedtopowerontheRRUsinthecellsequenceevery30
s.Atthesametime,youcancheckwhetherthecablesofacellareconnectedproperly
throughtheBBUindicator.
4.5PowerOff
Power-offoftheZXSDRR8978includes:
lEmergencypower-off:occurswhentheequipmentroomisonre,oodingorinsmog.
lCommonpower-off:occursinsomeapplicationscenarios,forexample,equipment
moveorexpectedlocalpoweroutage.
ForadescriptionoftheZXSDRR8978power-offow,refertoTable4-4.
Table4-4Power-offSteps
ItemEmergencyPower-offCommonPower-off
DCpowersupplyTurnofftheairswitch
oftheindoorDCpower
distributionunit.
1.TurnofftheairswitchoftheDCpower
lightingprotectionboxoftheZXSDR
R8978.
2.TurnofftheairswitchoftheindoorDC
powerdistributionunit.
ACpowersupplyTurnofftheairswitchoftheindoorACpowerdistributionunit.
4-5
SJ-20140808143736-001|2014-10-30(R1.1)ZTEProprietaryandCondential