Ampcontrol Pty Ltd
– ABN 28 000 915 542
EFL PROTECTION RELAY USER MANUAL
MAG-178 Version 5
– MARCH/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 20 of 23
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Figure 6.3: EFL Relay User Interface: Functionality of LEDs
6.6 First Time Use / Use after Extended Storage
The EFL Relay uses an internal super-capacitor to provide long term energy storage; however, after long
periods of storage time, the energy stored in the super-capacitor will dissipate.
The consequence of the EFL Relay having a discharged super-capacitor is that latched FC trips will not
be able to be reset until the super-capacitor has been recharged.
Recharging the super-capacitor requires the unit to be connected to an external power source for a
period of 5min. This charging can occur when the unit is installed in its service enclosure by energising
the control supply to the relay or, when the relay is not installed, by connecting the EFL relay to 24Vac or
24Vdc supply.
ON
FC (Electrical) Trip Active
OFF
FC (Electrical) Healthy
ELEC LED FUNCTIONALITY
ON
Undervoltage Trip
OFF
Undervoltage Healthy (or
Disabled)
UNDERVOLTAGE LED
FUNCTIONALITY
ON
Internal Fault
FLASH
EFL Relay Operating
System Healthy
STATUS LED FUNCTIONALITY
ON
FC (Logical) Trip Active
OFF
FC (Logical) Healthy
LOGICAL LED FUNCTIONALITY
FC Healthy
FLASH
FC Trip (Logical or
Electrical) Active. Will
continue to flash when
power is not applied.
TRIP LED FUNCTIONALITY
OFF
ON
EFLO Trip
FLASH
EFL Relay Charging the
Phase Cables during EFLO
Test
EFLO STATUS LED
FUNCTIONALITY
OFF
EFLO Healthy
