Vetus BW312A Manuel D'utilisation Et Instructions D'installation page 12

A trickle charger for the starter and thruster battery
This provision makes is possible to charge both starter and bow prop batteries together
with the auxiliary battery if the latter is charged by a battery charger/inverter. A battery
charger/inverter can't be connected to the batteries in the same way as the alternator by
means of isolator diodes. During charging a current flows from the battery charger/invert-
er towards the battery while during inverter operation a current flows from the battery
towards the battery charger/inverter.
An alternator-charging monitor
An indication whether the alternator actually charges the battery whilst the is engine run-
ning.
B +
4
B -
RELAY
+ LIGHT
5
6
Block diagram battery watch BW3
+ LIGHT
12
PANEL
12
12
15
RELAY
RELAY
ALARM
Block diagram operating panel BW3
10
090303.03
2
3
+ CONSU- LIGHT
+ THRUSTER + START
MERS NEG.
7
THRUSTER + START
14
ALARM ALARM ALARM
B+ ALTERNATOR 1
8 9 10 11
M
M
+ CONSUMERS B + ALT
13
V
17
16
16
16
ALARM
ALTERNATOR
1 Battery watch
2 Discharge
monitor/main relay
3 Trickle charger
4 Alternator
5 Battery charger/ invert-
er
6 Auxiliary battery
7 Auxiliaries
8 Bow prop battery
9 Bow prop
10 Starter battery
11 Start motor
12 Switch with check light
13 Voltmeter
14 Under voltage monitor
15 Alarm buzzer
16 Warning LED's
17 'Battery select'
Battery watch BW312A / BW324A