Fault indicator (FI)

Products and reference designs

Fault indicator (FI)

Block diagram

Overview

Our integrated circuits and reference designs help you create fault indicators for overhead and underground power lines that reduce the time needed to localize the fault in medium- and low-voltage transmission lines

Design requirements

Next-generation fault indicators often require:

  • Power-optimized architectures for fault data capture and power quality analysis.
  • Energy harvesting at low-current levels and optimized battery management.
  • Low-power RF connectivity with minimal latency to transfer faults to a data collector.

Block diagram

Find products and reference designs for your system.

Fault indicator (FI)

Solar Panel Solar Panel CT/PT CT/PT V V Load Load V V cc cc V V Load Load V V Load Load V V Load Load V V Load Load V V cc cc Energy Harvesting Energy Harvesting Shunt Regulator Shunt Regulator Boost Converter BoostConverter Energy Storage Energy Storage Energy Harvester Energy Harvester Power Mux Power Mux Non-Isolated DC/DC Power Supply Non-Isolated DC/DC Power Supply LDO LDO DC/DC DC/DC Wireless Interface Wireless Interface RF Sub 1 GHZ Interface RF Sub 1 GHZ Interface Self-Diagnostic/Monitoring Self-Diagnostic/Monitoring Temperature Sensor Temperature Sensor Ambient Light Sensor Ambient Light Sensor Supervisor/Watchdog Supervisor/Watchdog Output User Interface Output User Interface LED Driver LED Driver Digital Processing Digital Processing Main MCU Main MCU GPIO GPIO GPIO GPIO GPIO GPIO ADC ADC Input User Interface Input User Interface Magnetic Sensor Magnetic Sensor High Gain High Gain Low Gain Low Gain Analog Front-End Analog Front-End AMP AMP Buffer Buffer Ref Ref 2:1 Analog Switch 2:1 Analog Switch AMP AMP AMP AMP DAC DAC Voltage Voltage Current Current

Technical documentation

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Type Title Date
White paper Enabling and integrating wired & wireless technologies for grid interoperability 22 Mar 2019
Technical article How energy harvesting can extend the life of your fault indicator on the grid PDF | HTML 22 Aug 2023
Technical article Benefits of using Sub-1 GHz connectivity for grid asset monitoring, protection and PDF | HTML 14 Jul 2023

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