A backflow preventer should be installed on a fire protection system. It is also important that proper inspection, testing, and maintenance (ITM), such as a forward flow test, be performed to ensure that the backflow preventer remains operational and does not seize up, which could impair the fire protection system.
Upon detecting current flow towards the grid, the inverter will reduce its output power until the countercurrent is eliminated, thereby achieving anti-backflow. It is important to note that the CT and meter themselves do not have anti-backflow capabilities; they simply collect data to enable the inverter to adjust its output accordingly.
Since this current flows in the opposite direction to the conventional one, it is referred to as “countercurrent.” Q: Why is anti-backflow needed? A: There are several reasons to prevent excess electricity generated by the PV system from flowing into the grid:
It is important to note that the CT and meter themselves do not have anti-backflow capabilities; they simply collect data to enable the inverter to adjust its output accordingly. Senergy Single-Phase Residential Anti-Backflow Solution