Sterling Power Products AB12160 Einbauanleitung Und Bedienungsanleitung Seite 5

REMOTE DOM SENSE (3)
The connection leading to the positive terminal of the domestic
battery. (See Extended Installation.) Installation is optional.
ALTERNATOR TEMP SENSOR
Connection for the alternator temperature sensor. Installation is
optional.
BATTERY TEMP SENSOR
Connection for the battery temperature sensor. Installation is
optional.
What do I expect to see from this unit and why?
The below test was set up and monitored and is as close as
possible as to what happens on the average split charge system.
The engine battery is a 100 amp hr standard lead-acid, and the
domestic battery is 3 x 100 amp hr standard lead-acid. The engine
battery was discharged to 11 volts (about 10 engine starts) and
the domestic bank to about 11 volts (will no longer run an inverter
and is about 60% empty). The alternator used is a Bosch 90 amp
with a standard 13.9 volt (variable) regulator. The unit battery type
is programmed to open lead-acid. There are two graphs, one is
showing the current going into the batteries, and the other is
showing the various voltages on the system.
System Voltage Graph :
The key points to pick up on here are:
The yellow trace (alternator voltage into the unit) clearly shows
that the system is doing its job. It is designed to pull this voltage
down a little in order to enable the standard alternator regulator to
produce its full current. You can clearly see that on position
the voltage curve the voltage is pulled down to position
current has increased from position
amps improvement.
Position 1 : This is the magic point, the point where the
domestic battery voltage exceeds the alternator input voltage.
Engine battery bank, domestic battery bank, and alternator voltage curves
15.00
14.50
14.00
4
1
13.50
13.00
TIME min.
12.50
Domestic battery bank current curve, with engine battery bank current curve
100
90
80
70
60
50
40
30
20
8
10
T im e m i n .
0
(optional)
(2) (optional)
(1) (optional)
U
- which is about 70
8 9
2 3
6
5
time in mins
9
domestic battery current
starter battery bank current
12
7
11
time in mins
REMOTE CONTROL
Connection for the optional remote control.
ALTERNATOR INPUT SHUNT (optional)
Connection for the alternator input shunt which is part of the
remote control package.
STARTER BATTERY SHUNT (optional)
Connection for the starter battery shunt which is part of the
remote control package.
E
NIT XPECTATIONS
This is what the process is all about.
The steps on the graphs show the unit boosting every 15
minutes, then resting for 2.5 minutes. An example of this is the
time period between
switching off the amplifier (to help the engine battery getting more
charge), the engine battery voltage curve increases during that
step shown at point
the engine battery at position
process is reflected in the other graph marked 'the current graph'.
The current graph
battery and the domestic system. The effect of the amplifier can
be clearly seen when the unit switches off for its 2.5 minutes rest
cycle. The current drops from position
= about 20 amps, a huge difference. At the same time you can
see the extra current going into the starter battery which clearly
charges through the whole exercise.
On completion the unit switches off, and the process continues as
4 on a conventional split charge system
5
. The battery falls below 12 volts, the system will automatically restart
and continue the process again.
shows that the engine battery has been fully charged and is
11
taking no more current.
(5) (optional)
2 and 3 . What you can see here is that by
6
which results in extra current going into
. The current change of this
7
shows the current flow into the engine start
= 95 amps to position
9
. If however the domestic
10
10
alternator input voltage
starter battery voltage
domestic battery voltage
10
12
5