Solar controller MPPT Lumiax MT1550EU, 12V/15A

Product detailed description

MPPT regulator 15A for lead-acid batteries with system voltage 12V and for PV panels with max. power 200W with max. input voltage 35V and min. input voltage 15,8V. It is primarily designed for panels with a system voltage of 12V, which generate 16-18V at maximum load. This regulator adjusts the V-A characteristic of the panel's current-solar source to be optimal for battery charging using an internal V-A converter. Thus, it can harness the energy from the solar panels better than a PWM controller that regulates charging only by pulse limiting the direct connection between the solar panel and the battery, where the width of the pulse is proportional to the state of the battery being charged. In other words, the MPPT controller can generate the ideal voltage and current to charge the battery from a higher voltage and lower current source. For example, 18V/5A converts to 14.5V/6.2A. The conversion efficiency of the V-A characteristic tends to be above 95%, so the losses are minimal and the regulators can usually be adapted to different types of batteries to provide the most optimal charging.


Technical parameters:

- system voltage 12V
- max. power of PV panels: 200W for maximum use of the controller. When using a more powerful panel, the full power will not be used, but the function of the controller will be preserved without damage.
- max. output voltage of PV panel: 35V
- min.output voltage of PV panel: 15,8V - verified by own measurement
- max. charging current: 15A
- max.discharge current: 10A (only if the load is connected through the regulator)
- self-consumption: 7mA
- 4-stage battery charging (CC, CV-boost, CV-float, CV-equalize)
- CC = charging with full power of PV panels until the set value of the end of charging (CV-boost)
- CV-boost = charging for 1-2h after reaching clamp voltage 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 holding voltage of 13.5-13.8V (adjustable)
- choice of Pb battery type: liquid dielectric, AGM, AGM GEL
- not suitable for Li-Ion, LiFePO4 or Li-Pol batteries
- load disconnection at battery voltage 10,8-11,8V - adjustable
- LCD display for setting and monitoring operating parameters
- 2× USB interface
- Temperature compensation: -4.17mV/K per cell for boost+equal -3.33mV/K per cell for float charging
- modbus protocol based on RS-485 interface maximizing communication possibilities.
- iP32 protection
- operating temperature: -25°C~55°C
- dimensions: 189×96×53mm/0.42kg