IKI-50_1F R2

IKI-50_1F R2

Universal Feeder Control Units, single-field monitoring, pulsation method, wiper mode, resistive and capacitive voltage measurement

Item number: 2502352
The universal Feeder Control Unit IKI-50_1F R2 is the appropriate solution for intelligent... more
Product information "IKI-50_1F R2"
The universal Feeder Control Unit IKI-50_1F R2 is the appropriate solution for intelligent distribution network stations and offers distribution network operators a high level of transparency and cost-effectiveness. The IKI-50_1F R2 includes all algorithms for selective fault detection. It is suitable for all neutral point treatments. Switching commands for load switch control can be fed to the IKI-50_1F R2 via communication bus and executed field-related with 1.5-pole switching safety.

Fault detection

  • directional short-circuit detection
  • directional earth fault detection, directional static earth fault detection (wattmetric method), directional transient earth fault detection (wiper method), earth fault detection via pulse locating
  • suitable for all neutral point treatments
  • no summing transformer required

fault early detection

  • fault early detection by detection of transient disturbances
  • partial discharge trend detection together with CAPDIS-S2_55 (R5)

load flow measurement

  • voltages, Currents, powers, frequencies, cos-phi, . ..
  • Momentary and average values
  • Limit value monitoring

Remote control and network automation

  • selective control of up to two motors
  • extensive logic functions freely programmable with PC software KriesConfig

IKI- 50_F1 R2 is maintenance-free

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

precise voltage measurement with precision dividers

  • optional voltage measurement with precision dividers, z. E.g. resistive sensors
  • two voltage inputs: 1x capacitive, 1x resistive
  • patented method for voltage calibration via a reference measurement from another feeder
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Device data
Article number2502352
Product designationIKI-50_1F R2
Number of feeders1
FirmwareVersion V54.0.0 or higher
Parameterization softwareKriesConfig
ConfigurationVia software Kries-Config (download at kries.com), Via HMI and display (limited)
Operating elements and display
Front displayLC-Display and LEDs
Direction keysOperation via four direction keys
Red LED (1)Error event detected | internal energy storage empty
Yellow LED (2)Slave Test | Primary Test | Device Warnings
Dreen LED (3)Status message device state
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 Feuchte bei 40° C
Protection classIP54 (Front)
Fault detection and failure forecast
Fault detectionIndividually selectable, any combinations possible
Star point typesShort-term low-ohmic terminated neutral, Low-ohmic terminated neutral, Inductive terminated neutral, Isolated neutral
Directional short-circuit detection I>>
Threshold current short-circuit detection I>>100 A ... 1,000 A (adjustable in steps)
Threshold time short-circuit detection I>>40 ms ... 1,600 ms (adjustable in steps)
Directional earth short-circuit detection Ie>>
Threshold current earth short-circuit detection Ie>>40 A ... 1,000 A (adjustable in steps)
Threshold time earth short-circuit detection Ie>>40 ms ... 1,600 ms (adjustable in steps)
Directional static earth fault detection Ie>;
Threshold current static earth fault detection Ie>2 A ... 30 A (adjustable in steps)
Directional transient earth fault detection Ie>
Threshold current transient earth fault detection 3I01 A ... 1,000 A (freely adjustable)
Threshold voltage transient earth fault detection 3U01 kV ... 300 kV (freely adjustable)
Earth fault detection via pulse locating
Pulse length of pulse locatingsymmetrical / asymmetrical
Transient fault detection IIe>
TE trend monitoring
  • in conjunction with CAPDIS-S2_55 (R5)
  • Indication on the display, transmission via Modbus-RTU
  • Partial discharge trend via frequency distribution; integration over 24h, trend over 72h
Fault resetAuto, Manually on the device, After time (1 h ... 8 h, configurable)
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.
Interfaces and communication
USB interfaceMini-USB
Modbus-RTU Slave
Modbus transmission rates [kBd]9600, 19200, 38400, 57600, 115200
Digital Inputs6
Potential-free digital inputs4
Digital Outputs6
Digital outputs for 1.5 pole switching2
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 (Input F1), Precision divider with an output signal of 3.25 V/sqrt(3) in nominal operation (input UF2)
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 measurementInput UF1 (capacitive): 3 % of measurement value after on-site calibration
Input UF2 (resistive): 0.5 % 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, optionally 1% 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.
Switching functionsSwitching of up to two load switches
1.5-pole switching
Power supply
Auxiliary power supply24...230 VAC/DC (jeweils  15 %)
Power consumption2 W
Insulation voltage2 kV, 1 min
Display buffer for fault indicationUnlimited data retention (independent of auxiliary power and buffer power);
Error display after power failure (depending on adjustable follow-up time):
  • with overrun time 12 seconds: 6 hours
  • with run-on time 60 seconds: 4.5 hours
Monitoring - failure forecast - failure detection:
The IKI-50_1F R2 in a typical grid application