Abb+ufes+manual Jun 2026

Reduces downtime compared to traditional arc mitigation systems. 2. Key Components of the UFES System

When the QRU detects both an overcurrent and an intense flash of light simultaneously, it immediately fires the micro-gas generators in the U1 switching elements. This creates a solid three-phase short-circuit to earth, diverting the fault current away from the arc and extinguishing it instantly. 2. Component Layout and Connections abb+ufes+manual

Configuration is typically done via the front panel HMI or through the software / PCM600 . extinguishing the arc.

The U1 elements achieve a solid earth connection in under 4 milliseconds, extinguishing the arc. abb+ufes+manual