Grounding System Testing

IEEE Standard 81 prescribes a Computer Based Test (CBT) method as an alternative to the traditional Fall-of-Potential (FOP) method to overcome conventional test issues such as:

  • Testing energized sites
  • Significantly reducing test lead lengths
  • Filtering out EMI, RFI, and ground current noise
  • Lack of information on probe performance, data quality, and error identification

CBT results provide accurate and quantified data that facility owners use to make informed critical decisions. HP&D grounding specialists offer a wide range of CBT ground testing, including:

  • Testing of energized systems per IEEE Standard 81
  • Ground grid mat and/or system impedance
  • Photovoltaic solar installations
  • Point-to-point continuity
  • Step and touch voltage
  • Transfer voltage
  • Soil resistivity
  • Tower ground impedance (transmission, distribution, telecom, wind turbines)
  • Fall-of-potential test (three-point)
    • For isolated systems only
  • Clamp-on induced frequency

HP&D grounding specialists use the Smart Ground® Multimeter (SGM)*, which unlike other devices, doesn’t require de-energization or isolation. It can validate the safety of a ground grid designed by any software such as CDEGS, WinIGS, CYMGRD, ETAP, EDSA, SKM, etc.

* HP&D is the exclusive worldwide distributor of the Smart Ground® Multimeter (SGM), a multi-function device for measuring grounding systems.

Download PDF about HP&D’s grounding system testing services.

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