LCD display 12V/24V/36V/48V Auto 30A 45A 60A Solar Power Controller(QWSR-LG4830)

This controller is designed for DC power supply system, small and medium-sized pv modules power system, using a dedicated computer chip to realize the intelligent control, all chips adopt industrial level, can be used in harsh environment.

Meanwhile system offers specific indication for the charge, load , sorts of failure and various protections such as short circuit, over-load, over charge, particular anti-reversed polarity protection and so on, the controller used computer chip to sample the parameter of the battery voltage, photovoltaic cell voltage, discharge current and environment temperature. According to the battery's character, realized the accurate control to discharge rate, correction of the temperature compensation through special control model
calculation.charging with the intelligent PWM dim way and charging compensation in accordance
with the current temperature of the battery, compensation factor is 3mv/oC/unit.LCM could show
all of the parameters and modes. Dial switch need to adjust if adopting different voltage system.

Main Features:
1.The controller carried with LCM module which can display system status and parameters
2.Begin to ascending charging automatically when the voltage of battery below the ascending charging recover voltage
3.Temperature compensation become more accurate due to Double temperature sensors design,inner temperature sensor test the inner temperature of the controller,outer temperature sensor test the outer temperature of the controller.
4.The controller could figure out everyday's power of charge and discharge which make user assess the controller and entire systemmore easily
5.With charging current overload protection function, controller will reduce charge current to protect the charging circuit after it surpass the rated current.
6.A equalizing charge every 30 days in order to prevent battery vulcanization
7.Industrial-grade chips and precision components makes the controller can operate in any harsh environment
8.Design of double MOS series control circuit and PWM dim control make the charging efficiency increased greatly
9.The parameter possess saving function which makes the parameter never be erased after losing the electricity and system become more reliable.
10.Three kinds of load work mode: purely light-operated, light-operated+time controlled,long-term on mode.
 

System protection function description

1 ,Overtemperature protection
Controller temperature exceed 90oC will close the load and charging efficiency will decrease.
Temperature less than 85oC will recover.
LedLight
 
Battery temperature exceed 55oC will close the load and charging will closed. Temperature
less than 55oC will recover.
 
2 ,Charging protection
Decrease the charging efficiency when PV array charging current more than  Rate charging
current and less then 1.25 times of  Rate charging current for 60s.
Decrease the charging efficiency when PV array charging current more than 1.25 and less then
1.5 times of  Rate charging current for 5s.
Decrease the charging efficiency when PV array charging current more than 1.5 times of  Rate
charging current for 1s.
Recover after decrease charging efficiency for 1min.
 
3 ,Over discharge protection
The controller will start the over discharge protection and close the load when the battery
voltage is less than over discharge voltage and duration 5s.
The controller will start the over discharge recovery protection when the battery voltage
exceed the over discharge recovery voltage.The next night will remove automatically.

4 ,Short circuit protection
Short circuit:
The first time short circuit in one day will recover after 5s later.
The second time will recover after 10s later.
The third time will recover after 15s later.
The forth time will recover after 20s later.
The fifth time or more than five times will recover after 4hours later.
Also can recover by long press the key!

5 ,Over load protection
Over-load protection:
Close the load when load current more than  Rate load current also less than 1.25 times of  Rate
load current for 60 seconds;
Close the load when load current more than 1.25 also less than 1.5 times of  Rate load current
for30 seconds;
Close the load when load current more than 1.5 also less than 3 times of  Rate load current for 5
seconds;
Recovery normal after overload stop 60s later, not have the limited times.

6 ,Reverse connection protection
This controller including the PV array, battery and load reverse connection protection.


Attention
Warning : This controller is a high power device, please read the instruction before use,
take extra care when operating.

Safety notes:
1. read the instruction and attention carefully before use
2. Do not disassembly and repair the controller freely
3. Avoid direct sunlight and pay attention to ventilation When installation
4. Install appropriate fuse or circuit breaker on the outside of the controller
5. Disconnect the external fuse or circuit breaker when wiring
6. Be careful to prevent short-circuit when installing the battery
7. To ensure adopt the correct wire diameter, connect firmly, fasten the wire after connection
8. Temperature resistance should be fixed on the battery,the othe end connect to the controller

Technical

Parameter	Value
System voltage	12V/24V/36V/48V
Rate charging current	45A/30A
Rate load current	45A/30A
No load loss	<12mA
Charging circuit voltage drop	Less or equal to 0.5V
Discharge circuit voltage drop	Less or equal to 0.5V
Solar input voltage	<140V
Re-entrant boost charge mode voltage	13.2V  ×2/24V; ×3/36V; ×4/48V
Over voltage protection	17.0V  ×2/24V; ×3/36V; ×4/48V
limited voltage for charging	15.5V  ×2/24V; ×3/36V; ×4/48V
Equal chargingvoltage	Boost charge voltage +0.5V
Equal charging interval	30days
Direct charge voltage	14.4V  ×2/24V; ×3/36V; ×4/48V
Float charge voltage	13.6V  ×2/24V; ×3/36V; ×4/48V
Over discharge voltage	11.0V  ×2/24V; ×3/36V; ×4/48V
Over discharge recover voltage	12.5V  ×2/24V; ×3/36V; ×4/48V
Equal charging time	1H
Boost voltage charging time	2H
Temperature compensation	-3.0mv/oC/2V
Light-control voltage	5V   ×2/24V; ×3/36V; ×4/48V
Light control delay	10min
Controller over-temperature protection	>90oC
Battery over-temperature protection	>55oC
Working temperature	-35oCto +85oC
Control method	Charging: PWM
Time of lcd back- light auto shut down	30(s)
Data auto transfer time	3(s)
Time of Ledlattice closed	25(s)
Weight	1.08Kg/45A  0.9Kg/30A

 
Payment Terms:
T/T, Western Union, Money Gram
Production arranged after receipt of payment.

Lead Time:
Sample order will be delivered within 7 working days.
Order quantity below 100PCS, delivery time is 7-15 working days.
Container order will be delivered within 15-30 working days.

Shipment:
Courier: FedEx, DHL, TNT, UPS, Aramex, EMS ect.
Forwarder: By sea / air or Customer designated

About us:
Guangzhou Queenswing Solar Energy Co. Ltd. Is a professional manufacturer and exporter of solar products including power inverter, solar charge controller, solar panel and solar battery in China. To provide high-quality product and considerate service is always our basic policy. We believe high quality creates business and progress is from improvement.


Main products:
Pure sine wave power inverter
Modified sine wave power inverter
UPS power inverter with charger
Car power inverter
Solar charge controller
Solar panel
Solar battery

Our power inverter and solar products are exported to most global coutries and get good reputation because of our favorable quality and stable performance.