Universal Feeder Control Units, two-field monitoring, with low voltage measuring adapter

Item number: 2500446_H001
The universal IKI-50 Feeder Control Unit is the appropriate solution for intelligent distribution... more
Product information "IKI-50_2F"
The universal IKI-50 Feeder Control Unit is the appropriate solution for intelligent distribution network stations and offers distribution network operators a high degree of transparency and cost-effectiveness. The IKI-50 includes all algorithms for selective fault detection. Depending on the option, it is suitable for all neutral point treatments and monitors up to two feeders simultaneously.

Load flow measurement

  • Voltages, currents, powers, frequencies, cos-phi ...
  • Momentary and average values
  • Limit monitoring
  • Measurement for two feeders, calculation of measured values of the third feeder

Fault detection

  • directional short-circuit detection
  • directional earth short-circuit detection, directional static earth fault detection (wattmetric method), directional transient earth fault detection (wiper method), earth fault detection via pulse locating, (Variant dependent, see below)
  • Early fault detection by detection of transient faults (Variant-dependent, see below)
  • suitable for all neutral point treatments
  • no summing transformer required
  • fault detection for two feeders

Network automation

  • extensive logic functions freely programmable with PC- Software KriesConfig


  • no battery
  • unlimited data retention
  • error indication in case of power failure over 6 hours

This variant also offers:

  • Connection to low voltage side of transformers
Device data
Article number2500446_H001
Product designationIKI-50_2F Universal Feeder Control Units | two-field monitoring | with low voltage measuring adapter
Operating elements and display
Direction keysOperation via four direction keys
Two feeder monitoring
Dimensions and installation instructions
Case height x width x depth49 x 96 x 108 mm
Cutout height x width45 x 92 mm
Norm cutout dimensionsDIN IEC 61554:2002-08
Installation typePanel mounting
Sheet thickness1.5 ... 2.5 mm
Operating conditions
Operating temperature-25°C ... 55°C
Storage temperature-25°C ... 70°C
Humiditymax. 95 % relative humidity at 40° C
Protection classIP54 (Front)
Fault detection and failure forecast
Directional short-circuit detection I>>
Threshold current short-circuit detection I>> [A]100, 200, 300, 400, 600, 800, 1000
Automatic response threshold Short circuit detection-
Threshold time short-circuit detection I>> [ms]40, 60, 80, 100, 150, 200, 400, 1200, 1600
Directional earth short-circuit detection Ie>>
Event logThe last 20 fault events are stored with event number, date, time, name of the triggering fault detection, fault direction, phase and fault current value.
Earth fault transient detection-
Interfaces and communication
USB interfaceMini-USB
Modbus RTU Master-
Modbus-RTU Slave
IEC 60870-5-104 Slave-
Slave test
Digital Inputs4
Connection cable cross sectionMax. 2,5 mm
Switching capacity relayAC: max. 62,5 VA max. 2A; max. 250 VAC
DC: max. 2A @ 40 VDC
Measurement values and functions
Voltage measurement
Measuring range voltageCapacitive
Phase-to-ground voltages
Phase to phase voltages
Measuring range voltage0.02 kV ... 92 kV | Start of voltage measuring range: 2% of Un
Accuracy voltage measurement3 % of measurement value
Current measurement
Measuring range current0.5 A ... 1,158 A (with current transformer IKI-LUM)
Zero-sequence current
Accuracy current measurement3 % of measurement value
Conductor currents
Active power
Reactive power
Apparent power
Rotary field detection
Frequency measurement
Mean value determination
Min-max value determination
Phase position
Phase shift cos-phi
Limit value monitoringVoltage, current, frequency, reactive power and voltage
Logic functionsA total of 32 logic rules can be programmed.
Power supply
Auxiliary power supply24...230 VAC/DC (jeweils  15 %)
Power consumption2 W
Insulation voltage2 kV, 1 min