Raymarine i60 - Direct Power Connection; SeaTalkng Power Supply

4.3DirectPowerConnection
1
3Acircuitbreakerorfuse
212Vdcvesselpowersupply
3Vessel’sRFground
4
SeaTalk
ng
powercable
4.4SeaTalkng®powersupply
PowerissuppliedtotheproductovertheSeaT alkng®
backbone.
ASeaT alkng®backbonerequiresone12Vdcpower
supply,connectedtotheSeaT alkng®backbone.
Thiscanbeprovidedby:
•abattery
(1)
,viathedistributionpanel,
•anAutopilotControlUnit(ACU)
(2)
,
•anSPXcoursecomputer
(2)
,
•for24Vvesselsa5amp,regulated,continuous
24Vdcto12Vdcconverterisrequired.
Note:
•(1)Thebatteryusedforstartingthevessel’s
engine(s)shouldNOTbeusedtopowerthe
SeaTalkng®backboneasthiscancausesudden
voltagedrops,whentheenginesarestarted.
•(2)TheACU-100andSPX-5cannotbeusedto
powertheSeaT alkng®backbone.
SeaTalkng®powerconnectionpoint
Smallsystems
Ifthebackbonelengthis60m(197ft)orless,the
powerconnectionpointmaybeconnectedatany
pointinthebackbone.
Largesystems
Ifthebackbonelengthisgreaterthan60m(197ft),
thepowerconnectionpointshouldbeconnectedat
apointthatcreatesabalancedcurrentdrawfrom
eachsideofthebackbone.TheLoadEquivalency
Number(LEN)isusedtodeterminethepower
connectionpointforthesystem.
IntheexampleabovethesystemhasanoverallLEN
of10,sotheoptimumconnectionpointwouldbeto
have5LENeithersideoftheconnectionpoint.
Cablesandconnections23