Abb+ufes+manual Jun 2026
The intelligence of the system resides in the electronic unit. It evaluates sensor inputs and triggers the PSE.
As a combination of advanced detection electronics and ultra-fast primary switching elements, the UFES system is engineered to trigger a three-phase short-circuit to ground the instant a fault is detected, thereby eliminating the hazardous arc. This active approach limits the pressure rise inside the switchgear to a minimum, preventing the devastating thermal and mechanical damage typically associated with such events. This innovative arc quenching system provides the highest level of safety for personnel and equipment against the hazardous impacts of internal arc faults.
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: The central intelligence of the system. It monitors input signals from arc detectors and current transformers, processes the logic, and provides the energy pulse required to trip the primary switching elements.
Configuration is typically done via the front panel HMI or through the software / PCM600 . The intelligence of the system resides in the
The manual outlines several ways to integrate UFES into both new and existing ABB switchgear : UFES™ Ultra-Fast Earthing Switch - ABB
Never attempt to disassemble or modify a U1 primary element. 6. Troubleshooting Common Alarm Codes Symptom / Alarm Potential Cause Recommended Action Damaged optical fiber or disconnected lens sensor. This active approach limits the pressure rise inside
The ABB UFE series (specifically the and UFE800 feeder terminals) are protection and control relays designed for Medium Voltage (MV) networks. They are widely used as the core control unit for the UFES (Ultra-Fast Earthing Switch) system.
