OverviewApplicationsAutomation tasksHardware structure of the power-system automationOptical fibersC37.94See also
All lines and all electrical equipment must be protected against prolonged overcurrent. If the cause of the overcurrent is nearby then automatically that current is interrupted immediately. But if the cause of the overcurrent is outside the local area then a backup provision automatically disconnects all affected circuits after a suitable time delay. Note that disconnection can, unfortunately, have a cascade effect, leading to overcurrent in othe