Universal Feeder Control Units, two-field monitoring, pulsation method, wiper mode

Item number: 2500448
The universal IKI-50 Feeder Control Unit is the appropriate solution for intelligent distribution... more
Product information "IKI-50_2F_PULS_EW"
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:

  • Ground fault detection with transient and pulse method
  • Failure forecast
Device data
Article number2500448
Product designationIKI-50_2F_PULS_EW Universal Feeder Control Units | two-field monitoring | pulsation mode | wiper mode
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