Samlexpower SEC-1250UL Owner's Manual - Section 8 |
24 | SAMLEX AMERICA INC.
ReMote contRol PAnel Model no. 900-Rc
Fig 7.4 Remote Control Panel Model No. 900-RC
AnoptionalwiredRemoteControlPanelModelNo.900-RC(Fig7.4above)canbe
ordered.Itcomeswith10metersofRJ-45,8P8CModular,Straightcable.Itisplugged
intotheRemoteControlJack(6).TheRemoteControlPanelcanbeusedtoswitchON
/switchOFFthechargerandalsomonitorthechargingstatusofthechargerfroma
remote location. Please read the manual for the optional Remote Control Panel 900-RC
for related indications.
seCtIOn 8 |
Operation
!
cAUtion!
NegativeTemperatureCoefficient(NTC)thermistorsareusedinserieswiththeACinput
circuittolimitverylargespikeofinrushcurrentdrawnbyinputsidecapacitors,whichact
almostlikeashortcircuitduringthefirsthalfcycleafterthechargerisswitchedON.When
chargerisswitchedON,NTCisincoldstate,itsresistanceishighandhence,theinrushcur-
rentspikeissuppressedtosafelevel.Itheatsupveryfastanditsresistancedropstoalmost
zero.ItremainsinheatedconditionaslongasthechargerremainsswitchedON.When
thechargerisswitchedOFF,theNTCrequiresaround2to3mintocooldownandresetits
resistancetohighcoldstatevalueforspikesuppressionthenexttimeitisneeded.Thefol-
lowingprecautionsaretobetakentopreventdamagetotheNTCandtotheinputcircuit:
• DonotswitchON,switchOFFandSwitchONthechargerinquicksuccession.Afterswitch-
ingOFFthecharger,waitforatleast5minutesbeforeswitchingONagaintoallowcool-
ingdownoftheNTC
• Whenpoweringthechargerfromagenerator,allowthegeneratortowarmupand
stabilizeinvoltagebeforeswitchingONthecharger.IfthechargerisinONconditionand
thegeneratorisstarted,highvoltagetransientsproducedbythegeneratorduringstartup
maydamagetheNTC
seCtIOn 7 |
Preparing the Charger for Operation
Remote
Panel
Cable
with plug