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N36V/48V/20A Solar PWM Controller for Solar Power System

  • BWC-PN20A-36V/48V

  • Yangzhou

  • 8543709990

  • Yangzhou, China

  • 10000PCS/Year

  • L/C, T/T, Western Union, Money Gram


The intelligent control is realized by using single chip microcomputer and special software.

Accurate discharge control using battery discharge rate correction. Discharge terminal voltage is the control point corrected by discharge rate curve, which eliminates the inaccuracy of single voltage control over discharge and conforms to the inherent characteristics of the battery, that is, different discharge rates have different terminal voltage.

Full automatic control with overcharge, overdischarge, electronic short circuit, overload protection, and unique anti-reverse protection; Above protection does not damage any parts, does not burn insurance;

The serial PWM charging main circuit is adopted to reduce the voltage loss of the charging circuit by nearly half compared with the charging circuit using diode, and the charging efficiency is higher than that of non-pwm by 3% to 6%, which increases the power consumption time. Lifting charge after overdischarge recovery, normal direct charge and automatic control of floating charge make the system with longer service life; It also has high precision temperature compensation.

Direct LED light emitting tube indicates the current battery status to let users know the usage status;

All controls are made of industrial-grade chips (only with I industrial-grade controllers) and can operate freely in cold, hot and humid environments. The crystal timing control is also used and the timing control is accurate.

The setting point of potentiometer adjustment control is cancelled, and the working control points are recorded by E square memory, so that the setting is digitized, and the factors of accuracy and reliability are eliminated because of the deviation of vibration and temperature drift of potentiometer.

With digital LED display and setting, all Settings can be completed by one-click operation, which is extremely convenient and intuitive to use.

Fully sealed waterproof type (-s) has complete waterproof and moisture-proof performance.

Technical indicators
Rated current 20A 30A 20A 30A
Rated voltage 12V/24V 36V/48V
panel voltage <=50V <=100V <=100V
No-load loss <=35mA <=30mA <=30mA
Under voltage protection 10.8V/21.6V 32.4V/43.2V 32.4V/43.2V
Under pressure recovery 12.8V/25.6V 38.4V/51.2V 38.4V/51.2V
Charge parameter (24V*2)(48V*4) Lead acid seal (SEAL) Colloid battery (GEL) Open cell(FLoo) Self setting parameter(SELF)
Lift charge 14.6V 14.2V 14.8V 14.0V
Factory default
Increase charge 14.4V 14.2V 14.6V
Float charge 13.8V 13.8V 13.8V
Charging return 13.3V 13.3V 13.3V
Over charge current 1.1 times the rated current, stop charging, automatic recovery of 5 minutes
Voltage drop Charge <0.6V, discharge <0.3V
Temperature compensation -4mv/cell/ºC
Over-load, short circuit protection 1.25 times rating current 30S;1.5 times rating current 10S overload current protection
≥3 times rating current short circuit protection
Installation line number <=7# AWG (16mm²)
Work temperature -25ºC to +60ºC
Storage temperature -30ºC to +70ºC
Humidity requirement <=90%, no condensation
Protection degree IP30
Use height <=2000m (2000m above sea level is required for the use of power)
weight 0.3KG
Outline size 146mm*105mm*44.8mm


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