CTEK D250SE - Page 8

10 • EN
PREREQUISITES
A dual battery system where a D250SE
together with a SMARTPASS 120S charges a
100–800Ah service battery. Current is supplied
from a solar panel and/or an alternator. The
starter battery is charged from an alternator.
It is advantageous to use this installation when:
• The alternator is not able to deliver the desired
charging voltage.
• The service battery capacity is greater than
100Ah.
Parallel consumption takes place during
charging. By connecting the consumers (See
TECHNICAL SPECIFICATION) to the Output
Consumers on the SMARTPASS 120S, the servi-
ce battery will be able to charge without parallel
consumption and the consumers will instead be
supplied with current from the alternator.
• The service battery shall be protected
against deep discharge. Connect non-
critical consumers to the Output Consumers
on the SMARTPASS 120S. Connect critical
consumers directly to the service battery.
SMARTPASS 120S does not in that case switch
off the critical consumers when the service bat-
tery is completely discharged.
TIP 4
Connect the cabling from the starter and service
batteries respectively to the SMARTPASS 120S
and not to the D250SE.
See also tips 1, 2 and 3.
SMARTPASS 120S
+OUT
+OUT
+IN
SMARTPASS 120S
+OUT
+OUT
+IN
PREREQUISITES
A dual battery system where there is a
230/110V charger and a D250SE that,
together with a SMARTPASS 120S, charge a
service battery with a capacity of 150–800Ah.
Current is supplied from a solar panel and/or
an alternator to the service battery. The starter
battery is charged from an alternator.
It is advantageous to use this installation when:
• The charge from the alternator while it is char-
ging (engine running) is not enough, so it has to
be supplemented by a 230/110V charger.
• The alternator is not able to deliver the desired
charge voltage.
• The service battery capacity is greater than
150Ah.
• Parallel consumption while charging is taking
place. By connecting the consumers
(see
TECHNICAL SPECIFICATION)
to the Output
Consumers on the SMARTPASS 120S, the
service battery will be able to charge without pa
-
rallel consumption and the consumers will instead
be supplied with current from the alternator.
TIP 5
Connect a 230/110V charger to the starter
battery if it needs charging. In that case both
the starter and service batteries will be optimally
charged from the 230/110V charger.
TIP 6
Heavy current consumers (see TECHNICAL
SPECIFICATION) must be connected directly to
the service or starter battery.
See also tips 1, 2, 3 and 4.
RECONDNORMAL AGM
M25
MODE
LITHIUM
5. Large service battery with parallel consumers 6. Connect an AC/DC charger
*
*
*
*
STARTER
BATTERY
STARTER
BATTERY
SERVICE
BATTERY
SERVICE
BATTERY
*See ”CABLE AND FUSE REQUIREMENTS” *See ”CABLE AND FUSE REQUIREMENTS”