IKI-50_1F R2
Universally applicable station control unit for one feeder
Part-No.: 2520468
Features
IKI-50_1F R2 is a universally applicable station control unit for local medium voltage network stations.
It is designed for one feeder and provides the user on site with all necessary load and error information.
IKI-50_1F R2 is equipped with the latest firmware starting from V50 and thus allows free selection of a suitable error detection procedure appropriate for the existing grid structure.
This station control unit provides a total of six digital inputs for logical links and alarms. Capacitive as well as ohmic voltage sensors can be connected for voltage measurement.
IKI-50_1F R2 communicates via Modbus and can thus be simply connected to the central grid control station.
Securing grid accessibility while simultaneously minimising restart delay time calls for intelligent components such as IKI-50_1F R2 on the distribution network level.
Error Detection
The various processes for error detection are easy to select and set up.
 | short-circuit detection |  | directional / non-directional detection |
 | earth fault detection | | directional / non-directional detection |
 | sin phi-procedure (isolated network) cos phi-procedure (compensated network) | | directional / non-directional detection |
 | transient fault detection | | directional / non-directional detection |
 | pulse current detection | | directional / non-directional detection |
 | detection of transient disturbance suitable for early fault detection | | directional / non-directional detection |
Load Flow Measurement
IKI-50_1F R2 detects all relevant load flow values as current and mean values. These can be retrieved on site on the display or by centralised access via remote control.
Remote Control and Network Automation
- selective control of up to two motors (four digital inputs and outputs each)
- switching automatics
- extensive logic functions freely programmable via display or PC software KriesConfig
IKI-50_1F R2 is maintenance-free
- no battery
- 6 h buffer owing to an internal maintenance-free capacitor module combined with unsecured auxiliary voltage
Technical data
| General: | |
| Firmware | starting from V50 |
| Degree of protection | IP 20 |
| Insulation voltage | 1 kV, 1 minute |
| housing | DIN 43700 |
| recommended cutout | 92 x 45 mm |
| connection cable cross section | max. 2.5 mm2 |
| operating temperature range | -25 °C .. +55 °C (max. 40 °C during calibration) |
| operating temperature range | -30 °C .. +70 °C extended range (measurement deviation 10%) |
| storage temperature range | -25 °C .. +70 °C |
| display buffer | 6 h, maintenance-free capacitor buffer |
| Load Flow Readings: | |
| zero current I0 | x |
| phase currents I1, I2, I3 | x |
| phase angles I12, I23, I31 | x |
| zero voltage U0 | x |
| phase-earth voltages U1, U2, U3 | x |
| phase-phase voltages U12, U23, U31 | x |
| phase layers U12, U23, U31 | x |
| effective (P), reactive (Q) and apparent (S) load and energy | x |
| phase shift cos-phi | x |
| frequency | x |
| mean values I, U, PQS with direction A & B over duration dt | x |
| minimum and maximum of mean values I, U, PQS with direction A & B over duration dT | x |
| minimum and maximum of mean values I, U, PQS with direction A & B since reset | x |
| accuracy current measurement | 3% of the measured value |
| accuracy voltage measurement in conjunction with CAPDIS | 3% of the measured value after calibration |
| accuracy voltage measurement in conjunction with ohmic dividers | 1% of the measured value without calibration |
| current measuring range | 0.5 ... 1000 A |
| Inputs, Outputs, Messages, Interfaces: | |
| digital output relays, max. 5 A | 4 freely configurable |
| digital inputs 24 VDC | 6 freely configurable |
| RS-485 with Modbus RTU-Slave | 1 |
| remote test function | x |
| auxiliary power 24 ... 230 VAC/DC, power consumption max. 3 VA | x |
| conductor current transformer | 3 |
| Y interface to CAPDIS | 1 |
| self-test function, primary test function | x |
| Error Prevention and Error Detection: | |
| short-circuit (I>>) with direction | x |
| earth short-circuit (Ie>) with direction | x |
| static earth fault (Ie> wattmetric) with direction | x |
| transient earth fault (Ie> wiper) with direction | x |
| earth fault with pulse location method (Ie> pulse location) | x |
| directed detection of transient events for error prevention | x |
| event memory (1 ... 20) phase-related errors | x |
| limit value monitoring for U, I, f, QU | x |
| self-programmable logic | x |
Terminal Diagram
Remote Control of Intelligent Local Network Stations
Intelligent local network stations are often under remote control. Motor control, however, must take into account switching states and permissible switching currents (apparent and reactive current). IKI-50 can issue control commands for motor operation via Modbus. The following example illustrates an application in multiple-field switchgear. In addition to the voltage measurement via capacitive dividers using CAPDIS, measurement via ohmic dividers is also possible. IKI-50 features an internal energy buffer lasting at least 6 hours. Motors and telecontrol technology must be supplied with secured auxiliary voltage, e.g. PSU-Hybrid.
