IKI-22
Directional fault indicator for short circuits and earth faults
Part-No.: 2520461
Directional fault indicator for short circuits and earth faults
Part-No.: 2520461
Direction detection, display and remote message of short circuits and earth faults. In compensated and isolated nets, the direction of the earth fault is recorded using the earth fault wiper method.
The voltage signals required for direction determination are obtained by means of a y-cable from the voltage system CAPDIS or CAPDIS-PI.
The sum signal is calculated from the three phase transformers. A balance current transformer is not required, which minimizes the installation effort.
Short-circuit and earth fault detection (NOSPE and KNOSPE) are possible without connecting auxiliary energy. An unsecured auxiliary power supply is required for the directional detection of earth faults in compensated and isolated grids using the earth fault wiper method.
The operation and display of the device are designed according to the IKI-20 family: The LCD display shows the fault type phase-selectively. For AWE applications, the first and second fault are displayed in a differentiated manner. Two separate LEDs indicate the fault direction. The parameterization is carried out via DIP switches behind the front flap. The test/reset button is used for the function test and the reset of a fault display.
| Pickup current short-circuit | 100, 200, 300, 400, 600, 800, 1000, 2000 A |
| Short-circuit pickup time | 60, 80, 150, 200 ms |
| Pickup current earth fault | 40, 80, 100, 200 A |
| Earth fault pickup time | 60, 80, 150, 200 ms |
| Transient directional earth-fault detection: |
|
| Pickup value U0 | 20, 50% of nominal voltage |
| Pickup value I0 | 100, 200, 300, 500A |
| Wait for U0 after transient | 0, 100 ms, 1 s, 5 s |
| Reset | Auto, 2 h, 4 h, external, button |
| Inputs: |
|
|
| Remote reset via external potential-free NO contact |
| 3 x signal input for current encoder (2-pin) | |
| Remote test input | |
| Outputs: |
|
| Amount | Four wiper contacts, potential free |
| Electrical data | Umax = 110 V AC/DC, Imax = 0.1 A, Ron = 35 Ohm |
| Auxiliary power: | |
| Integrated buffer | Lithium cell, 3.6 Ah, lifespan at least 15 years |
| Auxiliary power | 24 ... 230 VAC/DC, power consumption max. 2 VA, required for earth fault wiper method |
| Housing: |
|
| Installation | Front panel installation standard (DIN 43700) |
| Dimensions | 96 x 48 x 80 mm (w x h x t) |
| Recommended cutout | 92 x 45 mm (w x h) |
| Environmental conditions: |
|
| Operational temperature | –25 ... + 55 ° C |
| Storage temperature | –30 ... + 70 ° C |
| Degree of protection | IP 40 |
