The fault indicator mechanism is a mechanism that detects faults occurring in electrical or electronic systems and notifies the user.
The working principle of the fault indicator mechanism is as follows;
It measures the phase currents from three current transformers connected to the underground network cables and calculates the ground current. If the measured phase current exceeds the threshold value for the set time, the fault is detected. When the fault is detected, the phases or ground faults are shown on the screen. In all fault conditions, the fault indicator flashes and the contacts are drawn. If the fault passes before the automatic reset time expires and this situation continues for 3 seconds, it returns to its normal state.
Operating voltage | 24VDC / 110VDC |
Phase Current Threshold Value | 50-1000A |
Ground Current Threshold Value | 20-700A |
Fault Detection Time | 40-500ms |