A micro-gas generator in the PSE creates a low-impedance path to ground, causing the arc voltage to break down.
The electronic unit sends a trip signal to the PSE in less than 1 ms. abb+ufes+manual
The arc is extinguished in less than 4 ms total—20 times faster than standard protection. A micro-gas generator in the PSE creates a
An expandable unit with internal light and current detection for small protection zones. An expandable unit with internal light and current
Optical sensors (for light) and current transformers (for overcurrent) identify the arc fault.
The UFES manual outlines a specific sequence of events triggered by a fault:
The manual provides critical instructions for installing, configuring, and maintaining one of the industry's fastest active arc-fault protection systems . By extinguishing internal arcs in less than 4 milliseconds , the UFES system significantly reduces the thermal and mechanical stresses that can destroy switchgear and endanger personnel. System Overview and Core Components