Samlexpower SEC-1250UL Owner's Manual - Section 7 |
20 | SAMLEX AMERICA INC.
Inasinglebatterybank,twoormorebatteriesmaybeconnectedinparalleltoincrease
theirAHcapacity.Thesewillbedischargedandchargedasasinglebatterybank.Inthis
case,theparalleledbankofmultiplebatteriesistobeconsideredasasinglebankand
connectedtoanyoneofthe2banksofthechargerasshowninFig.7.2forbankof4
batteries.Forproperchargingofallthebatteries,pleaseensurethatthePositivewire
“A”fromthechargerisconnectedtothePositiveterminalofthefirstbattery(Battery
1)andtheNegativewire“B”isconnectedtotheNegativeterminalofthelastbattery
(Battery4).Thiswillensurethefollowing:
• Resistanceoftheinterconnectingcableswillbebalancedandtheindividualbatteries
will see the same series resistance
• Alltheindividualbatterieswillbechargedatthesamechargingcurrentandthuswill
be charged to the same state of charge
• Noneofthebatterieswillseeanover-chargecondition
WhenconnectingasinglebatteryorothersingleDCload,itcanbeconnectedtothe
commonNegativeandanyoneofthe2PositiveterminalsasinFig.7.1.
cHARGinG MoRe tHAn one BAnK oF BAtteRieS
!
cAUtion!
Whenchargingmorethanonebankofbatteriesatthesametimeusing3Stage
Charging,ensurethatthebatteriesinthebanksareinasimilardischargedcon-
dition.Ifonebankiscompletelydischargedandanotherisalmostfullycharged,
thebankthatisfullychargedwillbesubjectedtooverchargeconditionduring
thetimewhenthechargerremainsinStage2(“Uo”Phase)forchargingthe
completelydischargedbank.
If2banksofbatteriesarerequiredtobechargedandtheyareatdifferent
dischargedconditions,select“LoadedBattery”(2StageCharging)withthehelp
ofswitchesS1andS2ofthesetof4DIPSwitches(bothS1&S2inoffcondition)
-Seeunderheading“DipSwitchSetting”onpage21.
SelectinG tyPe oF BAtteRy And cHARGinG StAGeS
Stage3FloatStage(“U”Phase)voltageandStage2AbsorptionStage(“Uo”Phase)volt-
agearedifferentfordifferenttypesofLeadAcidBatteries.
3Stagecharging(Stages1,2and3)isrecommendedwhenchargingstandalone,un-
loadedbattery(Thebatteryhasnoloadconnectedtoitwhenitisbeingcharged).
Whenthechargerisusedtochargeabatteryandsimultaneouslysupplyanexternal
load,thevoltagelevelofStage2isrequiredtobesettothesamelevelasthevoltageof
Stage3topreventover-charging.Effectively,thebatterywillbechargedin2stagesonly
seCtIOn 7 |
Preparing the Charger for Operation