Blue Sea Systems 7650003 Add-A-Battery Kit - 120A [Boxed] - Manual

LED
On
Off
Slow Flash
Fast Flash
BATTERY STATUS
Combined
Isolated
Isolated
Start isolation
Isolated
Under voltage lockout
REASON
Charging
Discharging
Start Isolation wire
is energised
One or both batteries are below
9.5V (12V System) 19V (24V System)
LED Status Char t
SI-ACR Automatic Charging Relay with Start Isolation
• Automatically combines batteries during charging, isolates batteries when discharging
and when starting engines
• Supports high-output alternators up to 120 Amps
• Ignition protected—safe for installation aboard gasoline powered boats
• LED light is ON when batteries are combined
• Allows temporary isolation of house loads from engine circuit during engine cranking to protect
sensitive electronics—start isolation indicated by blinking LED
• Under voltage lockout—will not close when the lower battery is below 9.5V @ 12V systems
or 19V @ 24V systems—lockout indicated by blinking LED
• For 12 or 24 volt systems
• Dual Sensing—senses charge source on either battery bank
Marine Electrical Products
Add-A-Battery
PN 7650
Specifications
Cranking Rating (10 sec.) 1,000 Amps
Cranking Rating (1 min.) 750 Amps
Intermittent Rating (5 min.) 525 Amps
Continuous Rating 350 Amps
Maximum Voltage 32 Volts
Cable Size to Meet Ratings 4/0 AWG
Terminal Stud Size 3/8"-16 (M10)
Maximum Torque 140 in-lbs
Regulatory
E marked for ignition protection, meets UL1500 and SAE J1171 external ignition
protection requirements
Rated IP66---protected against powerful water jets
990310020 Rev. 007
e -Series, Dual Circuit Plus™ Battery Switch
• Switches two battery banks simultaneously with one simple ON/OFF switch while maintaining battery bank
isolation, minimizing the risk of a dead start battery
• The COMBINE BATTERIES function parallels two battery banks in the event of a low battery
• Meets external ignition protection requirements
Electrical Connections
• The wiring diagram illustrated on the back page represents a common installation and is not meant to
be a guide for wiring a specific vessel.
Caution: Disconnect battery connections before beginning the installation.
Reconnect after the installation is complete.
Use the wire sizing chart below to select the appropriate wire sizes to prevent overheating the ACR.
e -Series, Dual Circuit Plus™ Battery Switch Installation:
• Mount the battery switch in an easily accessible location close to the batteries.
• Attach one 4/0 AWG cable per terminal to meet ratings.
• Terminals must be attached under nut and lock washer. Torque to 140 in-lb (15.82 N-m)
Operation
• Turn all loads off before turning the battery switch to OFF.
• Do not switch to OFF while the engine is running.
• Open/Close Cycling―If your electrical system is configured with a charging source that cannot supply the full load
current being drawn from the receiving batteries, an open/close cycling process can occur. If this cycling continues,
the second battery bank could eventually discharge even though a charge source is present.
• The 120A SI ACR is not intended to carry starting currents. Use the battery switch COMBINE BATTERIES position
to combine battery banks for emergency starting.
* Larger wire sizes may be required to minimize voltage drop in long wire runs.
For more information please use the Circuit Wizard at www.circuitwizard.bluesea.com.
SI-ACR Installation:
• To minimize corrosion to wire and terminals, mount in a dry and protected location. Avoid locations directly
above battery banks.
• To sense charging sources on either battery bank, connect one battery bank positive to stud terminal A.
Connect the other battery bank positive to stud terminal B.
• Connect the quick connect terminal marked GND (ground) to the DC system ground through a ten to fifteen amp
in-line fuse to prevent fault currents from flowing in this wire.
• Connect a wire from the quick connect terminal marked SI (start isolation) to the terminal or wire running
from the start key switch to the starter solenoid. Make this connection through an in-line fuse of 1 to 10 Amps.
This connection can be made at the start key switch or at the starter solenoid, but must be to the line that is
positive only when cranking. Connection to a line that is positive while the engine is normally running will prevent
the charging relay from working properly.
• To connect a remote LED indicator, connect the red wire of the LED to a positive source through a 2A inline fuse.
Connect the yellow wire of the LED to the quick connect terminal marked LED.
• Remote indicator lamp – mirrors “COMBINED” LED on unit. Appropriate 12/24V LEDs include Blue Sea Systems PNs 8033
(amber), 8171 (red), or 8172 (green).
Guarantee
Blue Sea Systems stands behind its products for as long as you own them.
Find detailed information at www.bluesea.com/about.
For customer service, call 800-222-7617.
Installation Instructions
Specifications 12V DC 24V DC
Continuous Rating 120A 120 A
Intermittent Rating (5 min.) 210A 210A
Maximum Cable Size 1/0 AWG 1/0 AWG
Terminal Stud Size 3/8"-16 (M10) 3/8"-16 (M10)
Maximum Torque 140 in-lbs 140 in-lbs
Relay Contact Position
Combine (30 sec.) 13.6V 27.2V
(2 min.) 13.0V 26.0V
Open Low (10 sec.) 12.35V 24.7V
(30 sec.) 12.75V 25.5V
Over Voltage Lockout 16.0V 30.0V
Under Voltage Lockout 9.5V 19V
Regulatory
E marked for ignition protection, meets ISO 8846, UL 1500 and SAE J1171 external
ignition protection requirements
Rated IP67----temporary immersion for 30 minutes
Wire Size and Fuse Rating Chart (AWG)
Charging Amps Minimum Wire Size* Fuse Rating
≤60 #6 75-90A
≤80 #4 100-125A
≤100 #2 150A
≤120 #1 175A