Technical data
Solar Charge Controllers
Solar Charge Controllers
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Steca Elektronik GmbH | 87700 Memmingen | Germany | Fon +49 (0) 8331 8558-0 | Fax +49 (0) 8331 8558-132 | www.steca.com
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147
90
110
6
15
122
55
4x ø4,3
Steca PR 2020 IP
IP 65 version
The functionality of the Steca PR 2020 IP is based on the
Steca PR line of solar charge controllers.
This is equipped with a large display which shows the current
state of charge (SOC) as a percentage and graphically in the
form of a tank. The key component of the charge controller
is the state of charge determination, which has been signifi-
cantly improved. The auto-adaptive state of charge algorithm
results in optimal battery maintenance and control over the
module output of up to 480 Wp which can be connected
to it. The Steca PR 2020 IP has been specially designed for
operation in difficult environments with high salt, moisture
and dust content.
Product features
Hybrid controller
State of charge determination with Steca AtonIC (SOC)
Automatic detection of voltage
PWM control
Multistage charging technology
Load disconnection depending on SOC
Automatic load reconnection
Temperature compensation
Common positive grounding or negative grounding on
one terminal
Integrated data logger
Night light function
Integrated self test
Monthly maintenance charge
Integrated energy meter
Electronic protection functions
Overcharge protection
Deep discharge protection
Reverse polarity protection of load, module and battery
Automatic electronic fuse
Short circuit protection of load and module
Overvoltage protection at module input
Open circuit protection without battery
Reverse current protection at night
Overtemperature and overload protection
Battery overvoltage shutdown
Displays
Graphical LCD display
for operating parameters, fault messages, self test
Operation
Programming by buttons
Manual load switch
Options
External temperature sensor (page 51)
Alarm contact* (page 51)
Certificates
Fit for use in tropical areas (DIN IEC 68 part 2-30)
Compliant with European Standards (CE)
RoHS compliant
Made in Germany
Developed in Germany
Manufactured according to ISO 9001 and ISO 14001
—
[20 A]
MADE IN GERMANY
187
96
45
177
5
16 60
4x ø5
Steca Solarix PRS
PRS 1010, PRS 1515, PRS 2020, PRS 3030
The simplicity and high performance of the Steca Solarix PRS
solar charge controller make it particularly appealing. At the
same time, it offers a modern design and a convenient dis-
play, all at an extremely attractive price.
Several LEDs in various colours emulate a tank display, which
gives information on the battery‘s state of charge. Here,
Steca’s latest algorithms are employed, resulting in optimal
battery maintenance. The Solarix PRS charge controllers are
equipped with an electronic fuse, thus making optimal pro-
tection possible. They operate on the serial principle, and se-
parate the solar module from the battery in order to protect
it against overcharging.
For larger projects, the charge controllers can also be equipped
with special functions: e.g. with night light function and selec-
table charging plateau and deep-discharge protection voltages.
Product features
Series controller
Automatic detection of voltage
Voltage and current regulation
PWM control
Multistage charging technology
Current compensated load disconnection
Automatic load reconnection
Temperature compensation
Common positive grounding or negative grounding on
one terminal
Integrated self test
Monthly maintenance charge
Electronic protection functions
Overcharge protection
Deep discharge protection
Reverse polarity protection of load, module and battery
Automatic electronic fuse
Short circuit protection of load and module
Overvoltage protection at module input
Open circuit protection without battery
Reverse current protection at night
Overtemperature and overload protection
Battery overvoltage shutdown
Displays
Multifunction LED display
Multi-coloured LED
5 LEDs show operating states
for operation, state of charge, fault messages
Options
Night light function pre-set in the factory or adjustable
via Steca PA RC 100
Parameterisation of function values via Steca PA RC 100
Certificates
Compliant with European Standards (CE)
RoHS compliant
Made in Germany
Developed in Germany
Manufactured according to ISO 9001 and ISO 14001
—
[10 A ... 30 A]
Steca PA RC100
Remote control
(page 56)
[ar eas o f a pp lic at ion ]
480 W
PR 2020-IP
Characterisation of the operating performance
System voltage 12 V (24 V)
Own consumption 12 mA
DC input side
Open circuit voltage solar module < 47 V
Module current 20 A
DC output side
Load current 20 A
End of charge voltage liquid 13.9 V (27.8 V);
gel 14.1 V (28.2 V)
Boost charge voltage 14.4 V (28.8 V)
Equalisation charge 14.7 V (29.4 V)
Reconnection voltage (SOC / LVR) > 50 % / 12.6 V (25.2 V)
Deep discharge protection (SOC / LVD) < 30 % / 11.1 V (22.2 V)
Operating conditions
Ambient temperature -10 °C … +50 °C
Fitting and construction
Terminal (fine / single wire) 16 mm
2
/ 25 mm
2
- AWG 6 / 4
Degree of protection IP 65
Dimensions (X x Y x Z) 122 x 147 x 55 mm
Weight 350 g
Technical data at 25 °C / 77 °F
PRS 1010 PRS 1515 PRS 2020 PRS 3030
Characterisation of the operating performance
System voltage 12 V (24 V)
Own consumption < 4 mA
DC input side
Open circuit voltage solar module < 47 V
Module current 10 A 15 A 20 A 30 A
DC output side
Battery voltage 9 V ... 17 V (17.1 V ... 34 V)
Load current 10 A 15 A 20 A 30 A
End of charge voltage 13.9 V (27.8 V)
Boost charge voltage 14.4 V (28.8 V)
Equalisation charge 14.7 V (29.4 V)
Reconnection voltage (LVR)
12.4 V … 12.7 V (24.8 V … 25.4 V)
Deep discharge protection (LVD) 11.2 V … 11.6 V (22.4 V … 23.2 V)
Operating conditions
Ambient temperature -25 °C … +50 °C
Fitting and construction
Terminal (fine / single wire) 16 mm
2
/ 25 mm
2
- AWG 6 / 4
Degree of protection IP 32
Dimensions (X x Y x Z) 187 x 96 x 45 mm
Weight 345 g
Technical data at 25 °C / 77 °F
[ar eas o f a pp lic at ion ]
720 W
*special version, if the alarm option is
needed, this needs to be mentioned
on the purchase order.