Automatic Charging Relay and Alternator Feeder Upgrade
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In the original installation, the alternator was wired to feed the House Battery.
We elected to have the Alternator charging the Propulsiom Engine start battery, because
the bow thruster is powered from this source and would provide rapid recharge after bow thruster usage.
Also, the alternator feeder was upgraded to #6 AWG.
This necessitated adding an auxiliiary relay for connecting the engine start battery
feeder to the alternator voltage regulator terminal to prevent continuouse discharging of
the engine start battery throught the alternator regulator circuit.
An automatic charging relay was added to provide charging of the House Battery Bank when cruising. An AC Power Sensor relay was also added to prevent the automatic chatging relay from activating when the Battery Charger is activated from AC Power. This relay will protect your sensitive electronics by temporarily isolating the house loads from the engine circuit during engine cranking. The Blue Sea Systems Starting Isolation Automatic Charging Relay automatically combines battery banks during the charging cycle and isolates them while discharging, plus protects sensitive electronics by temporary isolation of house loads from engine circuit during engine cranking. Provides 120 continuous amps at 12/24V, 210A for 2 minutes and 280A for a 5 second surge. Ignition-protected for use aboard gasoline powered boats. Remote LED output indicates relay state away from ACR. LED light indicates when batteries are combined. Supports high-output alternators up to 120A. Dimensions are 3 7/8"L x 3 1/2"W x 1 7/8"H. The relay is waterproof rated at IP67 for temporary immersion for 30 minutes. Five-year warranty. Key Features Designed for 12V or 24V systems 12/24V auto ranging voltage input Dual sensing Automatically combines batteries during charging Isolates batteries during engine cranking and when not charging Senses charge source on either battery bank Under voltage lockout won't close when the lower battery is below 10.8V @12V (21.6V @24V) operation Hermetically sealed contacts/vaporproof Ignition protected for use aboard gasoline powered boats Waterproof rated at IP67 for temporary immersion for 30 minutes ISO 8846 and CE approvals Meets SAE J1171 external ignition protection requirements |
#1, Automatic Charging Relay and Alternator Feeder Upgrade |
#2, Automatic Charging Relay |
#3, AC Power sensing 24V |
#4, Automatic charging cut-out relay |
