SRNE Solar Co.,Ltd |
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LCD Display Digital Solar Charge Controller Pulse Width Modulation
Charging
SRNE 12/24v 40A pwm solar regulator with USB port HP2440
Product Overview
Pulse Width Modulation(PWM) charging method is to charge the
battery by automatically changing the duty cycle pulse current, so
that the pulsating charging can make the battery more safe and fast
full of power, and the disconnection period makes the battery react
with the oxygen and hydrogen generated by the chemical reaction. It
is absorbed, so that the concentration polarization and the ohmic
polarization are naturally eliminated, thereby reducing the
internal pressure of the battery and allowing the battery to absorb
more power. The pulse charging method enables the battery to have
sufficient reaction time and improves the acceptance rate of the
battery to the charging current.
An upgraded 3-stage PWM charging algorithm is adopted. Application
of an equalizing charge to the battery periodically or when over
discharged, can effectively prevent the battery from
non-equalization and sulfuration, thus extending the battery's
service life (with the exception of GEL and lithium batteries).
This model HP2440 is with LCD display so that the users can monitor
the parameters of solar equipments . It is also with USB port and
the users can charge their phones or other USB equipments at the
same time.
Electric Parameters
Parameter | Value |
Model | HP2440 |
System voltage | 12V/24V auto |
No-load loss | < 13mA/12V;< 15mA/24V |
Battery voltage | <34V |
Max. solar input voltage | <55V |
Rated charging current | 40A |
Battery type | Flood(FLD);Sealed(SLD);GEL;Lithium(LI) |
Max. photovoltaic system input power | 600W/12V;1200W/24V; |
Overvoltage protection | 16.0V |
Charging recovery voltage | 13.2V |
Temperature compensation factor | -3mv/°C/2V (default) |
Operating temperature | -25℃to+55℃ |
Waterproof level | IP30 |
Weight | 390g |
USB function | yes |
Product dimensions | 164*103.5*47mm |
Why choose us?
SRNE, as a high-tech enterprise with the government support ,and
with own R&D team as well as factory, has become the famous
brand and the experts of PV storage management and control, we
always insist on good quality, professional service and leading
technology. Besides, customer can purchase premium products with
favorable prices from us.
Our R&D team and service: in SRNE, there' re some technicians
having more than 10 years experience in the field of solar
controller and all the products we design are the trend of market
development.
Our tenet is continuously in pursuit of warm customer service.
FAQ:
Q: How many charging mode does the controller have?
A: There are two charging modes. There are PWM and MPPT. MPPT is
the most advanced. Srne have already developed MTTP charge
controller with high performance, reliability, efficiency and fast
tracking speed.
Q: What's the difference of the PWM charge controller and MPPT
charge controller?
A: 1. MPPT controller uses maximum power tracking technology,
compared to the PWM controller, the MPPT can generate more
electricity with the same solar panels.
2. MPPT controller has low requirement of solar power system
voltage, if the line or component parts damage the voltage, using
MPPT controller does not affect the system generating.
3. MPPT controller can detect the temperature of the battery, then
adjust the temperature by itself, the solar panel can charge the
battery more efficiency.
Q: Why should the controller have temperature compensation
function?
A: As temperature rises, electrochemical activity in the battery
increases. Similarly, as temperature falls, electrochemical
activity decreases. Therefore, as temperature rises, charging
voltage should be reduced to prevent overcharge, as temperature
falls, charging voltage should be increase to avoid undercharge. In
general, to assure optimum service life, use of a temperature
compensated charger is recommended.
Q: How does your factory carry out quality control?
A: Quality is our priority. Our QC always attached great importance
to quality control from the very beginning to the end of the
production. Each product will be fully assembled and carefully
tested before packed.