Sigma F+E 3 2.0

The SIGMA F+E 3 2.0 device is a combined short-circuit and earth fault indicator. It is designed to detect, display and remotely indicate short-circuit and earth faults in medium voltage distribution networks. The current is measured via three single-phase current sensors. This allows phase-selective fault detection and indication. There are two response criteria for short-circuit detection, fixed response values with response delay or auto-adjustment based on load current.