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EN
TECHNICAL SPECIFICATION
PRODUCT
D250T
SMARTPASS 120T
Model number
1048
2003
Input
25.6–32V, 10–15A
22.8–32V
Output battery
28.8V at +25°C, Max. 10A
Max. 120A continuously. Intermittent up to 350A.
Output consumer
Max. 100A***
Back current drain
Less than 1Ah/month
Less than 9Ah/month
Ripple*
Less than 4%
Not applicable
Ambient temperature
-20°C to +50°C (-4°F to +122°F)
Temperature-compensated charging voltage
28.8V at +25°C, voltage reduced at higher temperatures
and is increased at lower.
Battery types
All types of lead-acid batteries (WET, MF, Ca/Ca, AGM, GEL)
Recommended battery capacity
28–150Ah
28–800Ah
Dimensions/Weight
192 x 110 x 65mm (L x W x H) / 0.7 kg (1.5 lbs)
Enclosure class
IP65 (splash and dust proof)
MPPT**
No
No
Conventional alternator cut-in
>26.2V, for 5 sec. (engine running, alternator charging)
>26.2V, for 4 sec. (engine running, alternator charging)
Conventional alternator cut-out
<25.6V, for 5 sec. (engine running, alternator not charging)
<25.5V, for 4 sec. (engine running, alternator not charging)
Smart alternator cut-in
Not applicable
>23.6V, for 4 sec. (engine running, alternator charging)
Smart alternator cut-out
Not applicable
<22.8V, for 4 sec. (engine running, alternator not charging)
Battery guard cut-in (Service battery)
<23.0V (5s)
Battery guard cut-out (Service battery)
>24.0V (5s)
Temperature protection cut-in
>70°C (158°F)
>60°C (140°F)
Trickle charge starter battery
Starter battery 18V–25.2V.
*) The quality of the charge voltage and charge current is very important. A high current ripple heats up the battery which has an aging effect on the positive electrode. High voltage ripple could harm other
equipment that is connected to the battery. CTEK battery chargers produce very clean voltage and current with low ripple.
**) MPPT (Maximum Power Point Tracker) finds the best combination of current and voltage so that the output power is maximised.
***)Total max output current for Smarttpass is 120A and available current from alternator will be distributed into the two different output channels, Output Battery and Output Consumer. Specified values is
the maximum current for each output.
