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Established in 1945, Qualitrol provides smart utility asset condition based monitoring and transformer monitoring across the globe. Today, they are the largest and most trusted global leader for partial discharge monitoring, asset protection equipment and Information Products across generation, transmission and distribution.
Qualitrol provides a multi-function substation monitor offering advanced fault recording and long duration disturbance monitoring with options of phasor measurement in compliance to the IEEE C37.118 2005 specification; the most accurate fault location available using traveling wave methodology and Class A power quality in compliance with IEC 61000-4-30 Class A (Edition 2.0).


  • Utilizes the most accurate measurement chain including sampling rate of 512 samples per cycle and analog resolution of 20 bits on current channels

  • Option of travelling wave fault location with accuracy of ±60 meters (200 feet)

  • Full solid state device and high reliability – all data stored on CompactFlash

  • Advanced iQ+ client-server multifunction master station software

  • Achieve cost effective, integrated, automated substation integration with IEC 61850

  • Advanced HMI provision

  • Flexible sampling rates for fault and disturbance monitoring

  • Certified Class A PQ and fully compliant IEEE C37.118.2005 PMU

  • Traveling wave fault location

  • Uninterruptable power supply

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