EFI
Earth-Fault Indicator device for earth-fault detection and signalling on medium voltage networks:
• Designed to be installed on MV cables up to 33kV (underground, switchgears, cells, etc.).
• Local and remote earth fault signalling by means of flashing LED lamp and SCADA relay changeover contact.
• Up to four levels of trip current, selectable by internal jumpers (current values can be customer defined).
• Four reset modes: time-delay, 230Vac mains voltage, pushbutton reset and remote reset via SCADA (either
contact or voltage - factory preset)
• Up to four time-delay values for automatic time reset, selectable by internal jumpers (time-delay values
can be customer defined).
• Up to four fault delay values for transient cancellation, selectable by internal jumpers (delay values can be
customer defined).
• Correct operation (test) can be checked pressing the pushbutton on the front.
• Self-powered by the internal lithium battery with 10 years lifetime and over 1500 flashing hours.
• Battery can be easily replaced with lithium 3,6V - AA type (no soldering or tools required).
• Electronic module enclosed in IP65 box linked to the external current transformer CBCT.
• Split-type resin current transformer CBCT ring–type, composed by two halves that can be installed without
MV cables disconnection and held together by 4 allen screws.
IMPORTANT:
FOR DEVICE OPERATION REMOVE BATTERY PAPER STRIP
EFI.06
Product manual
GENERAL DESCRIPTION
CURRENT TRASF.
INPUT
SECTION
1
2
3
4
5
6
7
8
9
10
11
OPTO
ISOLAT.
RESET
INPUT
EXT.
INDICAT.
DRIVER
RELAY
MICROCONTROLLER UNI
T
+
BA
TTE
RY
RESE
T and
TES
T
PUSHBUT
TO
N
FAULT
FLASHING LED
LOW BATT LED
18
17
16
15
14
13
12
19
230ac MAINS RESET
CONTACT OR VOLTAGE
(factory selected)
SPARE
TERMINAL
LOW BATT.
SCADA
CONTACT
SIGNALLING
SCADA SPARE
CONTACT
EXTERNAL RESET OPTIONS:
SIGNALLING
SCADA
CONTACT
EXTERNAL
FLASHING UNIT
