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The MPPT regulator adjusts the V-A characteristic of the current source-solar panel with the help of an internal converter so that it is optimal for charging the battery. It can therefore use the energy from solar panels much better than the PWM controller, which regulates charging only by pulse limiting the direct connection of the solar panel and the battery, when the pulse width is proportional to the state of the battery being charged. In other words, the MPPT controller can generate the ideal voltage and current for charging the battery from the higher voltage and lower current of the source. For example, it generates approx. 15V and 10A from 30V and 5A. The conversion efficiency of the V-A characteristic is usually over 95%, so the losses are minimal and the regulators can usually be adapted to different types of batteries so that the charging is as optimal as possible.
Technical parameters:
- system voltage 12–24V, usable batteries: Pb AGM, Pb AGM GEL, Pb liquid, LiFePO4 - max. power of PV panels: 520W (1040W-24V) for maximum use of the regulator. When using a more powerful panel, the full power will not be used, but the function of the fegulator will be preserved without damage. - max. PV panel voltage: 100V (-20°C), 90V (+25°C) - max. charging current: 40A - own consumption: <8mA(12V),<12mA(24V) - 4-stage Pb battery charging (CC, CV – boost, CV – float, CV-equalize) - CC = charging with full power of PV panels up to the set value of the end of charging (CV-boost) - CV-boost = charging for 1–2 hours after reaching a terminal voltage of 14–15V (adjustable) - CV-equalize = charging with increased voltage to mix the liquid electrolyte - optional only for batteries with liquid electrolyte - CV-float = charging with a maintenance voltage of 13.5–13.8V (adjustable) - choice of battery type: With liquid dielectric, AGM, AGM GEL, LiFePO4 - LCD display for setting and monitoring operating parameters - temperature compensation: –4.17mV/K per cell when charging boost+equal -3.33mV/K per cell when charging float (maintenance) - protection IP32 - RS485 interface - operating temperature: –25°C~55°C - dimensions: 189×255×69mm/1.8kg
Note: for correct pairing using bluetooth, the battery must be charged to at least 12.5V. Solar Life application (skywise).
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