Samlexpower BBM-1225 - Adjusting Output Voltage of External Power Supply; Connections

8 | SAMLEX AMERICA INC.
SECTION 4 | Installation
Abatterycansupplyveryheavycurrentincaseofshortcircuitinthepathacrossits
terminals.Thiscancauseoverheatingofthecables/connecteddevice(s)andconsequent
riskofmeltedinsulationandpossibilityofre.Hence,forsafety,afastactingfuseof
appropriatecurrentcapacityshouldbeconnectedinserieswiththePositivecableand
shouldbeplacedwithin7"ofthePositiveterminalofthebattery.AutomotiveBlade
TypeofFuses,TypeATO/ATCmaybeused.
ThefollowingTablegivestherecommendedsizesofcableandfusesforexternalpower
supplyratedat25A.
Table 4.1 Sizing of Cable and Fuses
Current
Cable Length
up to 3 ft
Cable Length
up to 6 ft Fuses F1, F2
25A #12AWG #8AWG 32V,25A
Theterminalshaveatubularholeofdiameter5mmwithsetscrewforconnectingthe
inputandoutputcables.Ifthebareendofamulti-strandedcableisuseddirectly,the
setscrewmaynotpinchallthestrandsrmlyandwillresultinalooseconnectionwhich
willcausevoltagedropandexcessiveheating.For a  rm connection, the cable ends
should be terminated with suitable pin type of terminal.
4.3 ADJUSTING OUTPUT VOLTAGE OF EXTERNAL POWER SUPPLY
Beforetheexternalpowersupplyisconnectedtothisunit,itistobeensuredthatthe
outputvoltageofthepowersupplyisadjustedtotherequiredvoltageasexplained
underSection3.2.
4.3 CONNECTIONS
Switchoffthepowersupply.ConnectthePositiveandNegativeoutputofthepower
supplytotheinputterminalsoftheunitmarked“INPUT+”and“INPUT–”respectively
(1,2inFig2.1).
ConnecttheDCloadtotheterminalsmarked“LOAD+”and“LOAD–”(4,3inFig2.2)
Connectthebatterytotheterminalsmarked“BATTERY+”and“BATTERY–”(5,3inFig2.2)
!
CAUTION!
Ensurecorrectpolarityofallconnections.