Alfa Pro + Solar PCU 3.75kVA/48V that is mainly used in hospitals, schools, industries, petrol pumps, banks, and also in homes. It continuously monitors battery and solar voltage as well as grid and output voltage with their current. A PCU (Power Conditioning Unit) is an integrated unit that consists of a grid charger, inverter, and MPPT solar charger. Alfa Pro + Solar PCU 3.75kVA/48V is a model of a Power Conditioning Unit (PCU) that uses solar (primary) and grid (secondary) to charge the batteries.