Description
The Steca PR-2020 is designed to handle up to 20A of solar array power in 12V or 24V systems. Features PWM multi-stage charging, load control, and LCD status display. Rock solid performance from one of Europe’s best solar innovators.
The Steca PR charge controllers have been proven their effectiveness for over 10 years, employing fifth generation charge controller technology (up to 720 Wp). This high class state of the art controller features LCD display, and integrated circuit control based on a self learning algorithm. Steca is German solar engineering for everyone.
PR-2020 Key Features…
- Micro-controller based, multistage, temperature compensated charging using PWM / Shunt control
- State of Charge (SOC) Control with unique Steca–AtonIC and Data Logger for optimum charging
- Automatic detection of 12V / 24V battery
- Simple menu driven operation through graphical LCD display
- Displays charged and discharged energy in Ampere Hours
- Lower EMI – ideal for telecommunications
PR-2020 Specifications…
Input 12V/24V
Amps20 Amps
Weight 0.36Kg / 0.8 lbs
Dimensions 18.7 x 9.6 x 4.4cm / 7.36 x 3.78 x 1.73″
Warranty 2 Year Limited
Battery System…
Nominal Voltage : 12V/24V (Automatic Detection)
Battery Types : Lead Acid (Flooded / AGM / Gel)
Solar Array…
Max Open Circuit Voltage : < 47V
Max Short Circuit Current at 25°C : 15A
Controller Characteristics…
Type : Shunt, PWM
PWM Frequency : 30 Hz
Self Consumption : 12.5 mA
Display : Graphical LCD Display for Operating Parameters, Fault Messaging & Self Test
Temperature Compensation : -4m V per K and cell (internal sensor)
Grounding : Common Positive Grounding. Negative Grounding only on Battery Negative
Final Charging Voltages…
Boost (FOR 2 HOURS) 14.4V (28.8V) 14.4V (28.8V) 14.4V (28.8V) 14.4V (28.8V)
Float Liquid Electrolyte: 13.9V (27.8V) / Gel Cell: 14.1V (28.2V)
Equalization (FOR 2 HOURS) Liquid Electrolyte: 14.7V (29.4V) / Gel Cell: No Equalization
30 Day Maintenance (2 HOURS) Liquid Electrolyte: 14.7V (29.4V) / Gel Cell: 14.4V (28.8V)
Load Control…
Max Load Current at 25°C : 15A
Low Voltage Disconnect : SOC Mode: < 30% / Voltage Control Mode: 11.1V / 22.2V
Low Voltage Reconnect : Â SOC Mode: > 30% / Voltage Control Mode: 12.5V / 25.0V
Safety Circuitry…
Automatic Reset & Electronic Fuse
– Reverse Polarity of Solar Array / Load / Battery Connections
– Short Circuit at Solar Array Input / Load Output
– Over Charge, Over Load, Over Input Voltage and Over Temperature
– Deep Discharge / Under Voltage
– Reverse Current Flow from Battery to Solar Array at Night
– Excessive Solar Array Current
– Open Circuit (Battery is Not Connected)
Max Terminal Wire Size : 16mm2 / 25 mm2 or AWG #6 / AWG #4
EMC Compliance : CE Marked
Environmental…
Operating Ambient Temperature : -10°C to 50°C / 14°F to 122°F
Ingress Protection : IP32
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