The devic
e continuously checks the earth current.
When the selected trip level is exceeded for
more than the selected delay time, the device
trips: the LED starts flashing and the SCADA relay
gives a pulse signalling, closing the contact for
500ms. If a second fault occurs when the EFI is
already tripped, the SCADA contact will close
again for 500ms to indicate that a second fault
has occurred. The minimum fault duration (delay)
time is designed to discriminate real faults from
simple line transients.
DEVICE TEST:
simply press the pushbutton when the device is not flashing. The EFI will start flashing and the
SCADA relay will give a pulse signalling.
DEVICE RESET:
After the device has tripped, it can be reset in the following ways:
• Pressing the pushbutton on the front.
• TIME RESET: the EFI will reset automatically when the selected preset time has elapsed.
• REMOTE RESET: closing the contact or remote pushbutton connected to the screw terminals.
• 230Vac MAINS RESET: the EFI will reset when the mains 230Vac is back after the fault restoration. Simply
connect this input to mains 230Vac voltage.
Note: in order to use this reset feature, the 230Vac voltage must disappear when the fault occurs, i.e.
it must be cut off by the MV circuit breaker that breaks the faulty line, otherwise the EFI will reset
immediately after the fault.
Device Options (to be specified in purchase order)
• Screw terminal output to drive the external flashing indicator
• SCADA Changeover Relay: Momentary or Permanent contact
• SCADA Output signalling spare (extra) changeover contact
• Remote reset by DC voltage in range 9-36Vdc
• Low Battery LED indicator in front of the box (amber LED
flashing during EFI test or trip when battery remaining capacity
is lower than 20%)
• Low Battery SCADA signalling changeover contact
OPERATION
Trip current level
Leakage earth current
TRIP (FLASHING)
EFI
Delay
Earth current
EFI reset
EFI.06
Product manual
4 FIXING HOLES DIAM. 5mm
ON A 63.5mm SQUARE ON
THE BOTTOM OF THE BOX
108,5
108,5
63,5
LED LAMP
PUSHBUTTON
CABLE GLANDS
