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of wellsee solar controller and photovoltaic equipments. Wellseeproducts have passed ISO9001, CE and RoHS certificates, and can be
designed and produced according to the customer’s requirement.
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WS-SC2430 wellsee three-stage solar controller(also called wellsee photovoltaic controller/ solar charge and discharge controller), applies in solar photovoltaic system which coordinates the
working of solar panels, batteries and loads. The controlleris different from other solar controllers which has advanced three
-stage charging function that can make battery fully charge battery
and also increase the comprehensive protective functions so that
the entire system can operate efficiently and safely.
Wellsee three -stage solar controller is totally different from
other controllers with three stage charging mode:it charges by
battery charging characteristic curve and adopts to intelligent
three steps charging mode “constant current- constant voltage and
limited current-Purling floating”,It make the battery full of power
and it has advanced human-machine interactive function that user
can adjust charging voltage.
Three-stage charging mode (take 12V system as an example.)
1.Constant current fully charge stage: directly charging battery by
using constant current output characteristic until the voltage of
battery is up to 13.7V(can be set);
2. Constant voltage charge stage: controlled by PWM, the battery
voltage is kept at 13.7V, till charge current is less than Purling
current floating charge voltage;
3. Purling current floating charge stage: continue to control by
PWM and keep the charge current keep in floating status until
battery voltage is up to 14.2V, charging is over.
If the started voltage of battery is higher than the lowest
protection voltage, the system will go to the Purling current
floating charge stage automatically to prevent frequent
overcharging; if started charge voltage is lower than the lowest
protection voltage, the system will go to three-stage charge mode.
Three stage charge mode uses constant current charging at the
beginning and the end, and uses constant voltage charging in the
intermediate stage. When the current is decayed to the set value,
it switches from the second stage to the third stage. This mode can
make the outlet minimum to protect the battery better and really
charge the battery fully.
WS-SC2430 Wellsee three-Stage charge controllerapplies to all types of solar panel and lead-acid batteries(other
types of batteries can be set charging curve according to
customer’s requirement), MCU (Micro processing controller) has PWM (Pulse Width Modulation) program. It can provide fast and
best charging voltage and current from the PV panel according to
different types of batteries and power supply of panels .
Intelligent three stage charging mode: constant current charge→
constant voltage and limited current charge→ purling current
floating charge .
1.CPU control, LCD display
2.Automatic recognition of input voltage • Applicable to various
types of durable batteries
3.Micro processing controller Pulse Modulation Wide-frequency (PWM)
4.Low voltage cut-off can be set /resuming connection of the DC
output of the load port
5.Temperature sensor for charging a battery in compensation
6.Protective circuit of PV from reverse-charging.
9.Short circuit protection
10.Reverse discharge protection
11.Reverse polarity connection protection
13.Low voltage protection
14.LCD display parameters in turn
12V/24V Automatic voltage recognition
Max Load Current
Input voltage range
12V～20V / 24V～40V
Charge loop drop
Discharge loop drop
Over voltage protection
17V / 34V
Floating mode Full charge cut
Three stage mode Full charge cut
13.7V / 27.4V
Low voltage cut
10.5~11V / 21V~22V
No load loss
Max wire area