Directional short-circuit and earth fault indicator, bistable contacts

Item number: 2501991_H002
The IKI-22 is a combined short-circuit and earth fault indicator with direction detection. It can... more
Product information "IKI-22_PF"
The IKI-22 is a combined short-circuit and earth fault indicator with direction detection. It can be operated both with and without auxiliary power and is suitable for all neutral earthings.

Variant with permanent bistable contacts as alarm outputs.

Directional fault detection for all network types

Directional detection, indication and remote signalling of short circuits and earth faults. In compensated and isolated networks the directional earth fault is detected with the transient earth fault wiper method.

Voltage information from the Capdis voltage detecting system

The voltage signals required for directional detection are obtained from the CAPDIS® or CAPDIS-PI voltage detecting system by means of a Y-cable.

Earth fault detection without balanced core CT

The summation signal is calculated from the three phase current sensors. A balanced core CT is not required, thus minimizing the installation effort.

Operation without auxiliary power possible

Short-circuit and earth fault detection in networks with grounded neutrals are possible without connecting auxiliary power. For directional detection of earth faults in compensated and isolated networks with the transient earth fault wiper principle, an unprotected auxiliary voltage is required.

Simple operation and adjustment

Operation and display of the device are designed according to the IKl-20 family: The LCD display shows the fault type phase-selectively. For recloser applications, there is a differentiated display of the first and second fault. Two separate LEDs indicate the error direction. The parameterization is done via DIP switches behind the front cover. The test/reset button is used to test the function and to reset an error indication.

Alarm contacts

The contacts are potential-free and designed as permanent bistable contacts. A connected auxiliary power supply is required for the permanent contact function. Otherwise the outputs work as wiper monostable contact.
Device Data
Article number2501991_H002
Quantity unitPiece
Product designationIKI-22_PF Directional short-circuit and earth fault indicator | bistable contact
Controls and display
Front displayLC-Display and LEDs
Test button
Red LED (1)Error in direction of cable
Yellow LED (2)Fehler in Richtung Sammelschiene
Buffer of power supplyBattery
Dimensions and installation
Case height x width x depth48 x 96 x 80 mm
Cutout height x width45 x 92 mm
Norm cutout dimensionsDIN IEC 61554:2002-08
Installation typePanel mounting
Sheet thickness1.5 ... 2.5 mm
Climatic conditions
Operating temperature-25°C ... 55°C
Storage temperature-25°C ... 70°C
Humiditymax. 95 % relative humidity at 40° C
Protection classIP40
Fault detection
Star point typesIsolated neutral, Short-term low-ohmic terminated neutral, Low-ohmic terminated neutral, Inductive terminated neutral
Short circuit detection I>>
Directional short-circuit detection I>>
Threshold current short-circuit detection I>> [A]100, 200, 300, 400, 600, 800, 1000, 2000
Automatic response threshold Short circuit detection-
Threshold time short-circuit detection I>> [ms]40, 80, 150, 200
Earth short-circuit detection Ie>>
Directional earth short-circuit detection Ie>>
Threshold current earth short-circuit detection Ie>> [A]40, 80, 100, 200
Threshold time earth short-circuit detection Ie>> [ms]60, 80, 150, 200
Directional static earth fault detection Ie>;-
Directional transient earth fault detection Ie>
Threshold current transient earth fault detection 3I0 [A]100, 200, 300, 500
Threshold voltage transient earth fault detection 3U0 [%]20, 50
Earth fault detection via pulse locating-
Transient fault detection IIe>-
Step voltage monitoring-
Fault resetAuto, After 2h, 4h, Manually on the device, External potential-free normally open contact
Earth fault transient detection
Directional earth short-circuit detection
DIP switch for parameterization
Slave test
Digital Inputs1
Remote signalling4 contacts

bistable (auxiliary power needed, else monostable)

Ron = 35 Ohm
Remote testFunction test including switching of the remote signalling contacts possible by connecting a potential-free normally open contact to the slave input.
Switching capacity relayUmax 110 V AC/DC, Imax 100 mA
Voltage inputs1
Measurement values and functions
Voltage measurement-
Cross calibration-
Current measurement-
Auxiliary power
Auxiliary power supply24 … 230 V AC/DC (jeweils  15 %), needed for earth fault detection with transient algorythm
Power consumption1 W
Insulation voltage1 kV; 1 min
Battery typeLithium
Notes on transformer supplyFrom 15 A three-phase