ADTRAN Total Access 372 - UPS Power Supply Description

Components and Interfaces
61287722G1-5B 11
UPS Power Supply
ThepowerfeedmustbeULListedITESPShavinganLimitedPowerSupply(LPS)Output
ratedat12VDC,minimum2A,andsuitablefortheintendedlocation.TheSBUONTutilizes
anuninterruptiblepowersupply(UPS).AnUPS(seeFigure3)isabatterybackupsystem
designedtocontinueprov
id
ingpowerwhentheprimarypowersourceislost.WhentheUPS
sensesalossofpowerfromtheprimarysource,thebackupbatteryisactivatedtoprovide
powerforashortperiodoftime.
Figure 3. Uninterruptible Power Supply (UPS)
PowerissuppliedtotheSBUONTbyanUPSlocalpowersourcewithbatterybackupthat
ut
ilizestheACpoweratthecustomerpremises.TheunitpowerstheSBUONTandfunctions
asabatterybackupsupplyingcontinuous12VDC.Itcontainsonesealed,lead‐acidbatteryfor
powerbackup.
Ifthebatteryisdisconnected,theSBUONTisnotprotectedfrompoweroutages,andwi
ll
senda
“BatteryMissing”alarmtotheOLT.
InstalltheUPSperthespecificationsrecommendedbythemanufacturer.
ONT
Power Converter
Battery Charger
Alarms
Battery
Backup
Alarms
12V DC
85V AC-
264V AC
UPS