Victron BlueSolar 75 15 MPPT solar controller

Victron BlueSolar 75/15 MPPT

Robust and fast MPPT controller for demanding conditions with panel voltage up to 75 V, maximum charging current 15 A. Battery 12/24 V, PV max. 220/440 Wp.

Ultra-fast Maximum Power Point Tracking (MPPT)

Victron Energy's MPPT solar controllers are among the absolute world leaders in this field. It offers ultra-fast MPPT tracking to ensure the maximum possible solar gains. Especially in cloudy skies with frequent changes in light intensity, solar gains are 30% higher compared to classic PWM controllers or 10% higher compared to slower MPPT controllers.

The maximum power of the solar panels is 220 Wp for 12 V systems, 440 Wp for 24 V systems. If these values ​​are exceeded, the controller will not be damaged, but will only automatically reduce the incoming power from the panels to acceptable values. The solar controller is preset at the factory and there is usually no need to make major adjustments to the settings. The maximum open-circuit voltage (referred to as Voc) of the connected solar panels must not exceed 75 V (note: the voltage of the solar panels increases as the outside temperature drops). The maximum input short-circuit current of the PV panels must not exceed 15 A, otherwise permanent damage may occur.

If you want to do the above using a PC, then you can use the VE.direct to USB cable to connect the controller and PC. You just install the Victron Connect program on your computer.

The internal electronic components are protected by a resin coating against adverse effects and for a long life. It thus offers increased protection resistance IP43 for electronic components and IP22 for connection connectors. Designed for a vertical position on a non-flammable base, with wiring from below.

The regulator contains an internal temperature sensor for corresponding adjustment of the charging voltage. Automatic detection of 12 or 24 V system voltage.

Adaptive three-stage charging

1. fast charging (Bulk), 2 . absorption (Absorption) and 3. maintenance (Float). Initially, in fast charging, a high current and lower voltage is generated to quickly recharge a discharged battery. This phase is followed by a constant voltage with decreasing current to fully charge the battery without dangerous overcharging that reduces battery life. A charged battery is kept charged by very low current and low voltage. If the battery voltage drops below 13.2 V, for example due to load, a new charging cycle is started.

The voltage from the panels must exceed the battery voltage by 5V for the regulator to start working and charging the battery. The regulator charges until the voltage from the panels is 1 V higher than the battery voltage. For a 12 V battery, we recommend panels with a minimum number of 32 cells and a maximum number of 108 cells (panels in series). It is therefore possible to charge a 12 V battery as well as panels with a working voltage of 24 V. For 24 V systems, we recommend panels with a minimum number of 72 cells and a maximum number of 108 cells. The purpose is to achieve sufficient voltage to effectively and fully charge the battery.

The solar controller has a DC output for powering a DC load. The DC output voltage is equal to the battery voltage. So if you have, for example, a 12 V battery - we can power a 12 V load on the DC output.

BatteryLife algorithm - adaptive charging to extend battery life. The regulator constantly monitors the charge level of the battery and day by day gradually increases the voltage level at which the load is disconnected until the absorption voltage is reached (the battery is fully charged). This is followed again by a drop in the voltage level, during which the load is disconnected. In this way, the battery can be fully recharged approximately once a week even with reduced solar gains and higher load, which will have a positive effect on the battery life. This is an optional feature.

Warning: Victron Energy MPPT controllers are not allowed to be used in combination with photovoltaic panel optimizers. MPPT controllers and optimizers may be damaged during use, and this damage may not be recognized as a valid claim.

Battery voltage: 12/24 V (auto detection)

Rated charging current: 15 A

Nominal power of photovoltaics, 12 V: 220 W

Nominal power of photovoltaics, 24 V: 440 W

Maximum PV voltage (open circuit): 75V

Max. short-circuit current: 15 A

Efficiency (max.): 98%

Weight: 0.5 kg

Dimensions: 113 x 100 x 40 mm