Earth fault indicator

SICAM EFI Earth fault indicator for cables

SICAM EFI Earth fault indicator is for the detection of earth faults in medium voltage cable networks. It detects and indicates (locally and remotely) earth faults in radial or open ring cable networks of solidly or low-resistive grounded grids.

Contact us
Category:

Feature

  • Dual power supply with AC/DC power supply and battery. Due to the battery, the device is self-sustaining and maintains its functionality even after the main power supply is tripped
  • Complies with IEC 61010-1 safety standard and IEC 62689-1 standard for short-circuit indicators
  • Easy setting via DIP switch
  • Configurable binary outputs, for remote messages to SCADA via RTU in the case of faults or for diagnostics
  • Local indication: 1 flag and 1 red LED for ground fault, 1 yellow LED for battery charge level, 1 green LED for AC/DC power supply
  • Several reset functions, auto reset (via time stages), remote reset via binary input or automatic reset on recovery of auxiliary voltage, net current or via AC/DC Binary inputs
  • Extended battery life with enhanced power management enabling more than 2,000 hours of operation under fault conditions (flashing)
  • Sensors with simple locking mechanism for perfect retrofitting to the MV cables
  • Sensor cable available with 3.5 m, 5 m or 16 m length
  • Built- in restraints to prevent fault detection due to inrush currents & auto reclosure operations using time muting logic

Specification

Medium-voltage cable distribution systems up to 36 kV (± 10%), 50 Hz/60 Hz

 

Signalization

 

Fault indication via LEDs

  • 1 flag red – earth fault
  • 1 LED red – earth fault
  • 1 LED yellow – battery charge level when push button is pressed
  • 1 LED green – auxiliary voltage available

 

Binary out- inputs

  • 1 binary output for external signal lamp earth fault
  • 1 binary output earth fault
  • 1 binary output battery monitoring
  • 2 binary inputs: 1x AC reset-input, 1x DC reset-input
  • 1 binary input remote test / reset
Sensor details

10% accuracy each

  • Sensor type 1: earth fault current 25 A to 100 A
    for 3 core cable applications
    sensor diameter 150 mm
    sensor cable length 3.5 m, 5 m
  • Sensor type 2: earth fault current 25 A to 240 A
    for 3 core cable applications
    sensor diameter 140 mm
    sensor cable length 16 m
  • Sensor type 3: earth fault current 25 A to 240 A
    for 3 single core cable applications
    flexible sensor diameter 220 mm to 340 mm
    sensor cable length 16 m
  • Sensor type 4: earth fault current 25 A to 240 A
    for 3 core cable applications
    sensor diameter 120 mm
    sensor cable length 16 m
Auxiliary voltage
  • Battery for 2,000 hours flashing time, service life of 15 years min
  • 110 – 230 V AC (± 20%)
  • 9 – 38 V DC

Temperature range

  • From -30°C to +75°C

Housing

  • Polycarbonate housing for surface mounting,
    optional L-clamp for panel mounting arrangement
  • Dimensions: 140 x 150 x 41 mm (W / H / D)
  • Protection class: SICAM EFI IP65W, sensor IP68W
  • Suitable for detached surface mounting

Related products