A full suite of official ABB documentation is available to support the engineering, installation, and operation of the UFES system.
The Ultimate Guide to ABB UFES: Ultra-Fast Earthing Switch Technical Manual and Applications Introduction to Arc Flash Mitigation abb+ufes+manual
< 4 ms after detection (Switching time of PSE < 1.5 ms). Voltage Range: Up to 40.5 kV. Short-circuit Currents: Up to 100 kA. A full suite of official ABB documentation is
The UFES contains a pyrotechnic actuator. Handle with care, particularly regarding storage and temperature limitations. The UFES contains a pyrotechnic actuator
The air must be free of corrosive gases, conductive dust, and excessive salt content. Primary Circuit Integration
: The fault current is finally cleared by the feeder circuit-breaker, which may also be triggered by the UFES electronics to shorten total breaking time. Key Technical Specifications Rated Voltage Up to 40.5 kV Rated Short-Time Current Up to 100 kA Switching Time (PSE) Total Extinguishing Time < 4 ms (after detection) Service Life Expectancy Up to 30 years Installation and Retrofitting
The complete ABB UFES system relies on a combination of optical detection, electronic processing, and fast-acting mechanical switching elements. According to the product manual, the system consists of two primary component groups: Electronic Detection and Tripping Units