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

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708.19 | 08.44

187

MADE IN GERMANY

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96

187

MADE IN GERMANY

44

96

Grounding the regulator is not technically required when installing a stand-

alone solar system. 
Observe, however, the corresponding applicable national regulations.One 

ground is possible for all positive connections; however, only one connec-

tion is possible for a negative ground.
Observe that there is no common connection, e.g. across a ground con-

nection, the minus module connections, battery minus and load minus. 

Non-observance can damage the regulator!

The regulator is equipped with various devices to protect its electronics, 

battery and load. If the regulator’s maximal permitted data are exceeded, 

the regulator can break down despite the protective functions. Never impro-

perly connect more than one component to the regulator! Error messages 

(Point 7. Error messages) display any protective devices triggered. The 

protective function is automatically reset after remedying the error.

The solar module’s power may not exceed the regulator’s nominal power!
Protection against reverse polarity of the connected

Protects the regulator, not the consumer.
Protection against reverse polarity of connected battery

Charging and discharging the battery is prevented.
Short-circuiting at the module input
Short-circuiting at the load output
Protection against over charging  

Regulator disconnects the connection to the battery and turns off the 

consumer.
Open circuit-proof during operation without battery or consumer 

Load output is protected from high module open  circuit voltage directly 

flowing to load side. 
Reverse current protection at night

Prevents reverse current in the solar module at night.  

An additional reverse current diode is not necessary!
Overvoltage and undervoltage protection

Immediately turns off the load output during  

 

 

insufficient or excessive battery voltage. 
Excess temperature protection

If the temperature inside the regulator is too high, the regulator’s load 

output is turned off to reduce power loss.
Overload protection at load output

If the permitted load current is exceeded, the load output is turned off.
Transient overvoltage protection

A varistor at the module input protects against overvoltage >47 V. The 

component limits the diverted energy to 4.4 joules.
Deep discharging protection / low voltage disconnect

Prevents excessive deep discharging or overloading the battery. 
Meets the European CE standards