The FLA3.1 is completely self-sustained by the monitored network from a current flow of 20A upwards.
The earth-fault and short-circuit indicator type EKS can be used in radial networks with one input and open-ring networks which are solidly earthed or low resistance earthed.
The earth-fault and short-circuit indicator type EKL can be used in radial networks with one input and open-ring networks which are solidly earthed or low resistance earthed.The indication of short-circuits is done by one or three LEDs.