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• Four sections of charging ways: MPPT charge- equalizing charge- improving charge- floating
charge.
• 12/24/48V automatic identification function.
• Support for data storage, storage time can be up to 10 years.
• With current-limiting charging mode, when the input power of the photovoltaic panels is too large,
the charging current exceeds the rated current of the controller. The controller will limit the charging
current to the rated current charge.
• With internal temperature detection function, when the controller temperature rises to 75 degrees,
the controller will limit the charging current to half of the rated current. When the temperature
reaches 90 degrees, the controller will shut down of charging and output to control the temperature.
• Through the RS485 communication interface, controller can be connected to the upper machine.
You can set up monitoring and control parameters etc from the upper machine.
• The battery temperature compensation function.
• With a wide range of operating voltage of pv array maximum power point.
• With over charge, over discharge, over temperature, over load and reverse connection protection
functions.
Ⅱ
. Product Properties
1. MPPT charging technology
MPPT technology (Maximum Power Point Tracking, MPPT for short) is the technology which can
adjust the working state of the electrical module to assure photovoltaic panels output more electricity
Power. Direct current (dc) from the solar panels can be able to stored in the battery effectively,
which can solve the lack of life and industrial electricity in the remote areas or tourist areas where
regular Power grid can’t cover. The output power of photovoltaic battery is associated with the
working voltage of the MPPT controller. Only when the controller works in the most appropriate
voltages, will photovoltaic battery output reach the only maximum.
12v system, for example, under the 25
℃
temperature, the peak voltage (Vpp) of solar panels is
about 17v. When the weather gets very hot, Vpp turns to 15v and when the weather gets cold, Vpp
turns to 18v. Since battery voltage keeps at about 12v, charging by common charge controller, the
solar panel voltage is 12v which can not reach the maximum power. However, MPPT controller can
overcome this problem by constantly adjusting the input voltage and current of the panels.
Compared to traditional PWM controller, the MPPT controller can assure the maximum power of
solar panels, can provide higher charging current to the battery. Generally, MPPT can improve the