Steca Solar charge controller 12 V, 24 V 30 A Steca PR 3030 104517 User Manual

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708.19 | 08.44

Only install the regulator near the battery on a suitable surface. This surface 

should be solid, stabile, even, dry and nonflammable. The battery cable 

should be as short as possible (1- m) and have a suitable cable diameter 

size to minimize loss, e.g. use .5 mm² at 10 A and  m length; 4 mm² at 

0 A and m length; 6 mm² at 30 A and  m length. 
The regulator and battery should have same temperature ratio for the tem-

perature compensation function of the charging voltage. When the battery 

is placed far away from the regulator, an external temperature sensor is 

available as an accessory unit.
Do not assemble the charge controller outdoors. The regulator must be 

installed so that it is protected against humidity, dripping, splashing and 

rain water as well as direct and indirect warming e.g. sunlight.  
The regulator also generates heat during normal operation. The installation 

or assembly into another housing may not obstruct the rear vents necessary 

for cooling the device. 
To ensure the air circulation for cooling the regulator, an area of 15 cm on 

each side of the regulator must be kept free. The temperature at the instal-

lation site may never fall below or exceed the maximal permitted ambient 

temperature.

The integrated LC display should be protected against UV rays (e.g. sun-

light). Chronic exposure to UV rays can permanently discolor the LCD.

Connect the individual components to the symbols provided.
Observe the following connection sequence during commissioning:
1.  Connect the battery to the charge regulator - plus and minus
.  Connect the photovoltaic module to the charge regulator 

    - plus and minus
3.  Connect the consumer to the charge regulator - plus and minus
The reverse order applies when deinstalling!
Please observe that the automatic adjustment to 12V / 24V systems

15 cm

15 cm

15 cm

15 cm