IKI-23

The complete fault detection with all proven fault detection algorithms for all network types and independent of auxiliary power makes the IKI-23 the universal fault and load monitor for standard ring cable switchgear. It combines all the functionalities of the IKI-2x series in one auxiliary power independent device.

The IKI-23 can be used in distribution network stations with and without connection to the telecontrol level.

Directional and non-directional load flow and fault detection

For directional fault and load flow measurement, connect a capacitive divider or a CAPDIS-Sx to the IKl-23.

• 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
  

Auxiliary power independent

The IKl-23 does not require auxiliary power for fault detection; an auxiliary power connection is only required for remote transmission via Modbus.

Integrated Diagnostic Function

For correct directional fault indication, verification of the correct rotating field or transformer installation is essential. The IKl-23 displays the rotating fields self-explanatory.

Basic setting with DIP switch or USB

The basic settings can be made via DIP switches behind the maintenance flap. With the software KriesConfig the complete parameterization can be done via USB interfaces.

Early fault detection

• Early fault detection by transient fault detection
• Partial discharge trend detection together with CAPDIS-S2_55 (R5). This function is available in the version with Modbus.

Event memory

The device has an event memory with indication of the time duration, that has passed since the fault event. The event memory can be read out via Kries-Config and Modbus.

Step voltage warning

The voltage difference between switchgear ground and a second (grounded) point is continuously monitored by the IKl-23. If a dangerous potential difference occurs between these points during, for example, an earth fault, a warning message is displayed and reported. Step voltage monitoring increases protection for personnel and animals and provides an indication of insufficient or disturbed station grounding.

Retrofit of RMUs with installed IKI-22

RMUs with installed IKI-22 can easily updated by the IKI-23 for directional fault detection. Already installed current transformers of type IKI-LUG can be further used. Load monitoring is only possible with current transformers of type IKI-LUM.

Integrated LRM measuring point (optional)

The device has a three-phase LRM measuring point LRM module"" for retrofitting future expansion modules, phase comparison and rotating field direction measurement [e.g. using CAP phase)."