IKI-50_1F_PULS_EW_1%
Station unit for one feeder;
pulse detection method;
transient detection;
appliable for ohmic sensors (accuracy 1%)
Part-No.: 2520327
With the IKI-50 product line, flexible field control devices are available for local network stations in various access routes. The IKI-50 is the right solution for intelligent local network stations and offers the distribution system operators a high degree of transparency and cost-effectiveness. Information is available both on site and in the central network control centre. Errors can be detected and localized immediately.
Load flow measurement
- Voltages, currents, performances, cos-phi ...
- Current and mean values
- Limit value monitoring
Error detection
- Short-circuit detection (directed, undirected)
- Earth (short) final detection with four independent procedures
- suitable for all star point treatments
- no sum transformer required (exception: Wattmetric earth-fault detection)
- Error early detection by means of transient error detection
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 is maintenance-free
- no battery
- 6 h buffer due to internal maintenance-free capacitor module in combination with unsecured auxiliary voltage
Optional class 1 voltage measurement
- via ohmic sensors instead of CAPDIS
Variants overview
General
| Degree of protection | IP 20 |
| Isolation 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 |
| P,Q,S and energy | x |
| Phase shift cos-phi | x |
| Frequency | x |
| Mean values I, U, P, Q, S with direction A & B over duration dt | x |
| Min.- and max. values of mean values I, U, P, Q, S with direction A & B over duration dT | x |
| Min.- and max. values of the mean values I, U, P, Q, S 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 | 4 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 |
| Sum current transformer for wattmetric earth-fault method optional | 1 |
| 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 capture 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 |
Remote control of intelligent local network stations
Intelligent local network stations are often remotely controlled. However, the motor control may only take into account the switching states and the permissible switching currents (sham current and reactive current). The IKI-50 can issue control commands for motor operation via Modbus. The following example shows an application in a multi-field switchgear. In addition to the voltage measurement via capacitive dividers using the CAPDIS, measurements via ohmic dividers are also possible. The IKI-50 has an internal energy buffer for at least 6 hours. The motors and the telecontrol technology must be supplied by a secured auxiliary voltage, e.g. PSU-Hybrid.
Automatic switchover
The automatic switching system is used to reduce the re-entry time to a minimum. If the synchronicity of the two feeding sources is not guaranteed, a pause time between the shutdown of the first feed and the connection of the reserve feed is always recommended. The logic for the automatic switching system can be configured either via the display or conveniently via the KriesConfig evaluation software.
