Solar Water Heater
The Hybrid-Storage Solution for AC coupled off-grid Photovoltaic Systems.
If used with complying battery inverters, the AC ELWA-F detects over the AC line if excessive power is available. It automatically uses this energy for hot water storage. Otherwise there would be no utilization at all once the battery is fully charged. There is no need of any additional communication wiring.
Charging of the battery storage has priority. Once the battery is fully charged, AC ELWA-F starts using excessive energy for hot water heating. Hot water is by far the least expensive storage. It is a perfect add-on to electro-chemical storage systems.
The AC ELWA-F´s linear power control works, similar to a grid connected inverter, with high-frequency switching power electronics.