Designed for use with the ABB REA arc protection system.
The system continuously monitors for light (via lens or fiber sensors) and instantaneous current. abb+ufes+manual
for air-insulated switchgear, providing high-level protection for non-IAC qualified systems. 4. Operation and Maintenance Designed for use with the ABB REA arc protection system
The entire process—from sensing the arc to full extinction—takes less than 4 milliseconds . abb+ufes+manual