The electronic tripping unit is designed for speed and reliability, supporting both light and current sensors. 3. Installation and Commissioning (Manual Guidelines)
Periodically verify the sensor connections and the status of the electronic unit, as outlined in the instruction manual. 5. Benefits of Using the ABB UFES
This comprehensive guide serves as an essential companion to the official . It covers core technical specifications, components, operating principles, installation workflows, and maintenance requirements. 1. What is the ABB UFES?
The entire process—from sensing the arc to full extinction—takes less than 4 milliseconds .
ABB’s UFES system changes that timeline dramatically. It is an that detects an internal arc and then deliberately creates a three‑phase short‑circuit to earth in less than 4 ms from fault detection. By doing so, it collapses the arc voltage and extinguishes the arc almost as soon as it appears. The total extinguishing time, from detection to arc extinction, is ≤ 4 ms – roughly 20 times faster than a standard arc‑protection scheme . abb+ufes+manual
ABB also offers that cover these maintenance routines. The official UFES training (e.g., the 2‑day course at ABB’s Training Center in Ratingen, Germany) is structured as 40% theory and 60% hands‑on practice on real equipment, with a maximum group size of 5 participants.
The Unified Field Engineering System (UFES) is a software-based platform developed by ABB to support field engineering tasks. It provides a comprehensive set of tools for engineers to design, configure, and commission field devices, ensuring seamless integration with the overall control system. UFES is an integral part of ABB's System 800xA, a leading process control system used in various industries.
The UFES system consists of two primary parts that work together to provide 20 times faster protection than standard arc protection relays. Electronic Unit : Available as a standard tripping unit ( ) for use with external detection systems like or as a self-contained detection and tripping unit ( Primary Switching Elements (PSE)
Imagine a scenario where ABB collaborates with UFES (as a representative of educational and research institutions) on projects that aim to fuse manual craftsmanship with technological innovation. Such collaborations could involve research in advanced robotics, development of new materials, or creation of more efficient industrial processes. Students and researchers at UFES could engage in hands-on projects sponsored by ABB, applying theoretical knowledge to real-world problems and developing solutions that blend manual dexterity with technological acumen. The electronic tripping unit is designed for speed
The QRU1 is a self‑contained arc‑detection device that incorporates both light sensing and current measurement . It can protect a small zone without any external relays. The QRU1 processes input from up to several light sensors (via fiber‑optic cables) and from a current transformer that monitors the main bus current. When light and overcurrent coincide, the QRU1 immediately triggers the PSEs. The manual provides:
What is the of your current switchgear installation?
The UFES primary switching elements are . Once triggered, they must be replaced. Isolate the System: Ensure the switchgear is safe to enter.
Check fiber connections; replace scratched or snapped cables. Check fiber connections
The (Ultra-Fast Earthing Switch) is an active arc fault protection system that extinguishes internal arcs in less than 4 milliseconds by initiating a three-phase short-circuit to earth. Core System Components
Fast-acting devices that create a 3-phase short-circuit to earth to extinguish the arc. 1. Operating Principle of the UFES
ABB UFES Manual: Complete Engineering Guide to Ultra-Fast Earthing Switches