how does a amf relay work
                     How does 
a 
AMF relay 
work?
FEATURES
Accuracy Class 1.0 Displays voltage, frequency and current.
Large 20 X 4 backlit LC CT Ratio field programmable 
Display 
DG maintenance warning
12 LEDs for different 
Generator Over Current Alarm 
indications 
DG fault alarm
Low battery warning 
Over volt indication
Generator trial fail alarm
Automatic contactor control 
DG test mode
Under volt Indication
Displays Generator (DG) Run Hour and Maintenance Hour 
Suitable for both 12V and 24V battery systems. Wide input (9-36VDC) DC-DC converter power 
supply.
AMF RELAY WORK?
The AMF relay is a micro-controller based unit which automates generator start and stop actions 
during mains failure by controlling both mains and generator contactors. It also measures voltage, 
current and frequency and displays it on a 20 x 4 LCD. It has 12 LEDs for different indications. All 
programmable parameters are password protected and are stored in a non volatile memory and 
thus all information is retained in the event of complete loss of battery power. AMF can be 
operated in “AUTO”,”QAUTO” (Quick Auto) or “MANUAL” mode. The unit features a non-erasable 
incremental “DG run hour” and “maintenance hour. This unit is meant for use in three phase four 
wire systems. The “CT ratio” is site selectable. The unit is powered by a wide input (9-36VDC) 
power supply, which makes it suitable for both 12V and 24V battery systems.
AMF PANEL
3
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