Universal Fault Interrupter (UFI®) Technology
UFI is a patent-pending derivative technology from TDG Aerospace's proven NOFOD™ overwing heater blanket system. UFI is specificallly designed to monitor and protect three-phase AC circuits from dangerous electrical fault conditions. By independently monitoring the current and voltage on each phase of AC power, UFI technology provides unprecedented insight into the real-time health and operational status of a given three-phase electrical circuit. Where there is an increased sensitivity to catastrophic failure conditions (fuel pump circuits) or financial incentive to avoid fly-to-failure (cabin air recirculation fans, hydraulic pumps, etc.), the benefits of UFI technology are many. |
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| UFI Application: Fuel Boost Pump Protection |
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| Transient Electrical Fault Detection |
Steady State Fault Detection |
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| Line-to-ground current (parallel fault) |
Unbalanced phase currents |
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| Line-to-line current (parallel fault) |
Out-of-range phase currents |
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| Open phase (series fault) |
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The above fault conditions are detected based upon programmable thresholds that are set during unit manufacture, making the UFI infinitely adaptable to a given load and application.
The UFI is an all solid-state design with a predicted MTBF > 100,000 hours. It is designed to DO-160 Hardware Assurance Level B and DO-178 Software Assurance Level B.
