Electrical system
42
- Separate starting battery group for each engine
(driveline).
NOTE! No equipment connected to the starting
battery group.
- Two separate accessory battery groups.
Navigation equipment is connected to the port ac-
cessory battery.
NOTE! Navigation equipment should not be con-
nected to the starting battery group.
- Bow and stern thrusters, anchor winches and
other heavy electrical loads are connected to the
starboard accessory battery (II). This to prevent
voltage drop in equipment connected to the port
accessory battery, such as navigation instruments.
- Connect the sensor cables from the alternator to
the accessory battery groups.
NOTE! Heavy electrical loads should have a sepa-
rate switch connected directly to the accessory
battery positive (+) terminal.
- All other equipment, lamps, fans, refrigerators etc.
(except navigation instruments) can be connected
either to the port or starboard accessory battery.
- On D9, D, D2 and D6 the sensor cable is
factory mounted on the starter motor. If accessory
batteries are used, re-route the cable according to
the picture.
Single failure tolerant system
If a short circuit appears in one of the drivelines, this
will not affect the other driveline.
Recommended twin installation
Two accessory battery groups (single failure tolerant system)
B+
Start
battery, port
Accessory
battery I
Accessory
battery II
Starter
port
Cross over
switch
Charge
distributor
B+
Accessory battery
Navigation equipment,
other type of loads
Starter
starboard
Alternator
starboard
Alternator
port
Charge
distributor
Sensor
cable
Start
battery, stb
Start
port
Start
stb
Cross over
switch
Bow thrusters,
anchor winches etc.
(heavy loads)
Accessories (normal
loads) except naviga-
tion equipment
Sensor
cable
+
–
+
–
+
–
+
–
+
–
+
–
Summary of Contents for D11 series
Page 1: ...Marine Propulsion Diesel Engines Installation 1 1 D E D5 D16 series ...
Page 2: ......
Page 208: ...206 References to Service Bulletins Group No Date Concerns ...
Page 209: ...207 Notes ...
Page 210: ...208 Notes ...
Page 212: ...7748655 English 11 2007 ...