User's Manual

Chapter7
EnvironmentRequirements
TableofContents
PowerSupplyRequirements......................................................................................7-1
OperatingEnvironment...............................................................................................7-1
StorageEnvironment..................................................................................................7-2
7.1PowerSupplyRequirements
Table7-1showstherequirementsforthepowersupplyoftheZXSDRR8978.
Table7-1PowerRequirements
ItemRequirement
DCpowersupply-48VDC(uctuationrange:-57VDCto–37VDC)
TheDCpowersupplymustsupporttheanti-reverseconnectionand
over-currentprotectionfunctions.
ACpowersupply100VAC/110VAC/220VAC(uctuationrange:90VACto290VAC)
IftheACpowersupplyisused,theACpowerneedstobeconvertedintoDC
powerthroughtheACpowerlighteningprotectionboxandthenconnected
totheZXSDRR8978.
7.2OperatingEnvironment
TheZXSDRR8978canoperateproperlyinthefollowingconditions:
ClimaticEnvironmentCondition
ItemDescription
Lowedtemperature-40℃
Highesttemperature55℃
Lowestrelativehumidity2%RH
Highestrelativehumidity100%RH
Temperaturechangerate0.5℃/min
Lowestatmosphericpressure70kPa
Highestatmosphericpressure106kPa
7-1
SJ-20140808143736-001|2014-10-30(R1.1)ZTEProprietaryandCondential