Raymarine gS Series - Page 35

A
BatteryconnectionscenarioA:suitableforavesselwith
acommonRFgroundpoint.Inthisscenario,ifyour
product’spowercableissuppliedwithaseparatedrain
wirethenitshouldbeconnectedtothevessel’scommon
groundpoint.
B
BatteryconnectionscenarioB:suitableforavessel
withoutacommongroundingpoint.Inthiscase,ifyour
product’spowercableissuppliedwithaseparatedrain
wirethenitshouldbeconnecteddirectlytothebattery’s
negativeterminal.
Implementation—connectiontodistribution
panel
D13348-1
•Alternatively,thesuppliedpowercablemaybe
connectedtoasuitablebreakerorswitchonthe
vessel'sdistributionpanelorfactory-ttedpower
distributionpoint.
•Thedistributionpointshouldbefedfromthe
vessel’sprimarypowersourceby8AWG
(8.36mm
2
)cable.
•Ideally,allequipmentshouldbewiredtoindividual
suitably-ratedthermalbreakersorfuses,with
appropriatecircuitprotection.Wherethisisnot
possibleandmorethan1itemofequipment
sharesabreaker,useindividualin-linefuses
foreachpowercircuittoprovidethenecessary
protection.
•Inallcases,observetherecommended
breaker/fuseratingsprovidedintheproduct’s
documentation.
•Ifyouneedtoextendthelengthofthepowercable
suppliedwithyourproduct,ensureyouobserve
thededicatedPowercableextensionsadvice
providedintheproduct’sdocumentation.
Important:Beawarethatthesuitablefuserating
forthethermalbreakerorfuseisdependentonthe
numberofdevicesyouareconnecting.
Grounding
Ensurethatyouobservetheseparategrounding
adviceprovidedintheproduct’sdocumentation.
Moreinformation
Raymarinerecommendsthatbestpracticeis
observedinallvesselelectricalinstallations,as
detailedinthefollowingstandards:
•BMEACodeofPracticeforElectricaland
ElectronicInstallationsinBoats
•NMEA0400InstallationStandard
•ABYCE-11AC&DCElectricalSystemsonBoats
•ABYCA-31BatterychargersandInverters
•ABYCTE-4LightningProtection
Powercableextension
Theproductissuppliedwithapowercable,which
canbeextendedifrequired.
•Thepowercableforeachunitinyoursystem
shouldberunasaseparate,singlelengthof
2-wirecablefromtheunittothevessel'sbatteryor
distributionpanel.
•Raymarinerecommendsaminimumwiregauge
of18AWG(0.82mm
2
)foranylengthofcable
extension.
•Foralllengthsofextensiontothepowercable,
ensurethereisacontinuousminimumvoltage
attheproduct’spowerconnectorof10.8Vwitha
fullyatbatteryat11V.
Important:Beawarethatsomeproductsin
yoursystem(suchassonarmodules)cancreate
voltagepeaksatcertaintimes,whichmayimpact
thevoltageavailabletootherproductsduringthe
peaks.
Grounding—Dedicateddrainwire
Thepowercablesuppliedwiththisproductincludes
adedicatedshield(drain)wireforconnectiontoa
vessel'sRFgroundpoint.
ItisimportantthataneffectiveRFgroundis
connectedtothesystem.Asinglegroundpoint
shouldbeusedforallequipment.Theunitcanbe
groundedbyconnectingtheshield(drain)wireof
thepowercabletothevessel'sRFgroundpoint.
OnvesselswithoutanRFgroundsystemtheshield
(drain)wireshouldbeconnecteddirectlytothe
negativebatteryterminal.
Thedcpowersystemshouldbeeither:
•Negativegrounded,withthenegativebattery
terminalconnectedtothevessel'sground.
•Floating,withneitherbatteryterminalconnected
tothevessel'sground
Warning:Productgrounding
Beforeapplyingpowertothisproduct,
ensureithasbeencorrectlygrounded,in
accordancewiththeinstructionsprovided.
Warning:Positivegroundsystems
Donotconnectthisunittoasystemwhich
haspositivegrounding.
Cablesandconnections35