In the event of a failure or disconnection of the higher-level grid, stand-alone grids can occur, the local generator maintains the grid voltage and supplies the loads without the voltage level, voltage form and frequency being controlled by the RU.
This can lead to damage to equipment, customer equipment and even accidents of the maintenance personnel.
Our island detection system is a resonant circuit and resistive load for testing to IEC / EN 62116 and VDE 0126-1-1.