These are the panels mainly made for generator systems. The AMF Panel works on the following principle: When EB Supply is OFF; the DG supply would be ON within fraction of seconds automatically. Panel contains Control Relays, Control MCBs, Indications, AC/DC Meters, Frequency meter, Energy meter, Earth Leakage Relays.
At the incoming side, this panel will have two incomers usually HRC Fuses and one common switch. Through the AMF Relay, the panel works automatically.
Inside the panel there will be one relay for both under & over Voltages. If the incoming supply is under voltage or over, then entire system would trip. Hooter is used in the switchgears for indication of EB supply when DG Supply is in working condition.