Raymarine Micro-Talk E70361 - Seatalkng System Loading; Power Distribution - Seatalkng

SeaTalkng®systemloading
Themaximumloading/LENforaSeaTalkng®system
dependsonthelengthofthebackbone.
LoadingtypeBackbonelengthTotalLEN
Unbalanced
20m(66ft)
40
Unbalanced
40m(131ft)
20
Unbalanced
60m(197ft)
14
Balanced
60m(197ft)or
less
100
Balanced
80m(262ft)
84
Balanced
100m(328ft)
60
Balanced
120m(394ft)
50
Balanced140mto160m
(459ftto525ft)
40
Balanced180mto200m
(591ftto656ft)
32
Powerdistribution—SeaTalkng®
Recommendationsandbestpractice.
•OnlyuseapprovedSeaT alkng®powercables.Do
NOTuseapowercabledesignedfor,orsupplied
with,adifferentproduct.
•Seebelowformoreinformationonimplementation
forsomecommonpowerdistributionscenarios.
Important:Whenplanningandwiring,takeinto
considerationotherproductsinyoursystem,someof
which(e.g.sonarmodules)mayplacelargepower
demandpeaksonthevessel’selectricalsystem.
Note:Theinformationprovidedbelowisfor
guidanceonly,tohelpprotectyourproduct.Itcovers
commonvesselpowerarrangements,butdoes
NOTcovereveryscenario.Ifyouareunsurehow
toprovidethecorrectlevelofprotection,please
consultanauthorizedRaymarinedealerorasuitably
qualiedprofessionalmarineelectrician.
Implementation—directconnectiontobattery
•SeaTalkng®powercablesmaybeconnecteddirectly
tothevessel'sbattery,viaasuitablyratedfuseor
breaker.
•YouMUSTtasuitablyratedfuseorbreakerbetween
theredwireandthebattery’spositiveterminal.
•Refertotheinlinefuseratingsprovidedinthe
product’sdocumentation.
•Ifyouneedtoextendthelengthofthepowercable,
ensureyouusesuitablyratedcableandthatsufcient
power(12Vdc)isavailableattheSeaTalkng®
backbone’spowerconnection.
A
BatteryconnectionscenarioA:suitableforavesselwitha
commonRFgroundpoint.Inthisscenario,ifyourproduct’s
powercableissuppliedwithaseparatedrainwirethenit
shouldbeconnectedtothevessel’scommongroundpoint.
B
BatteryconnectionscenarioB:suitableforavesselwithout
acommongroundingpoint.Inthiscase,ifyourproduct’s
powercableissuppliedwithaseparatedrainwirethen
itshouldbeconnecteddirectlytothebattery’snegative
terminal.
Implementation—connectiontodistributionpanel
•Alternatively,theSeaTalkng®powercablemaybe
connectedtoasuitablebreakerorswitchonthe
vessel'sdistributionpanelorfactory-ttedpower
distributionpoint.
•Thedistributionpointshouldbefedfromthevessel’s
primarypowersourceby8AWG(8.36mm
2
)cable.
•Ideally,allequipmentshouldbewiredtoindividual
suitably-ratedthermalbreakersorfuses,with
appropriatecircuitprotection.Wherethisisnot
possibleandmorethan1itemofequipmentsharesa
breaker,useindividualin-linefusesforeachpower
circuittoprovidethenecessaryprotection.
•Inallcases,observetherecommendedbreaker/
fuseratingsprovidedintheproduct’sdocumentation.
•Ifyouneedtoextendthelengthofthepowercable,
ensureyouusesuitablyratedcableandthatsufcient
power(12Vdc)isavailableattheSeaTalkng®
backbone’spowerconnection.
Important:Beawarethatthesuitablefuserating
forthethermalbreakerorfuseisdependentonthe
numberofdevicesyouareconnecting.
20