IKI-50_2F R2e 1%

IKI-50_2F R2e 1%

Universal fault indicator for intelligent distribution substations, 2 feeder version, precise voltage measurement

Item number: 2502487
The universal fault indicator IKI-50 R2e is the appropriate solution for intelligent... more
Product information "IKI-50_2F R2e 1%"
The universal fault indicator IKI-50 R2e is the appropriate solution for intelligent distribution substations and offers distribution system operators a high level of transparency and cost-effectiveness. The IKI-50 R2e includes all algorithms for selective fault detection. It is suitable for all neutral point treatments. Information on faults, load curves or limit violations is thus available on site as well as in the central network control center. Faults can be detected and localized immediately.

The IKI-50_2F R2e 1% monitors two feeders. Its two inputs for voltage measurement are designed for ohmic sensors and allow precise measurement with a maximum measurement deviation of 1%.

Fault detection

  • Directional short-circuit detection
  • Directional ground short-circuit detection, directional static ground fault detection (wattmetric method), directional transient ground 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 monitoring

Network automation

  • Extensive logic functions freely programmable with PC software KriesConfig

IKI-50 R2e is maintenance-free

  • No battery
  • Unlimited data retention
  • Fault indication in case of power failure over 6 hours
Device data
Article number2502487
Product designationIKI-50_2F R2e 1% Universal fault indicator for intelligent distribution substations | 2 feeder version | Ohmic voltage inputs
Number of feeders2
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 status
Two feeder monitoring
Buffer of power supplyCapacitor (6h)
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
Short circuit detection I>>
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)
Earth short-circuit detection Ie>>
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 connection with CAPDIS-S2_55 (R5)
  • Indication on 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.
Earth fault transient detection
Directional earth short-circuit detection
Interfaces and communication
USB interfaceMini-USB
Modbus-RTU Slave
Modbus transmission rates [kBd]9600, 19200, 38400, 57600, 115200
Slave test
Digital Inputs4
Potential-free digital inputs4
Digital Outputs4
Digital IOs configurableYes
Switching functions feeder control unit--
Connection cable cross sectionMax. 2,5 mm
Switching capacity relayAC: max. 62,5 VA max. 2A; max. 250 VAC
DC: max. 2A @ 40 VDC
Relay outputs4
Voltage inputs2 (Precise voltage measurement with ohmic sensors)
Current transformer6
Measurement values and functions
Voltage measurement
Measuring range voltageOhmic
Phase-to-ground voltages
Phase to phase voltages
Measuring range voltage0.02 kV ... 92 kV | Start of voltage measuring range: 2% of Un
Precision voltage measurementYes
Cross calibration-
Current measurement
Measuring range current0.5 A ... 1,158 A (with current transformer IKI-LUM)
Zero-sequence current
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 functions programmableA 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
Capacitor buffer
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