Grounding System Testing
The Fall-of-Potential (FOP) method is plagued by inherent pitfalls, such as de-energization, long lead lengths, interference, and lack of confidence in data. IEEE Standard 81 prescribes the Computer Based Test (CBT) method which overcomes these issues by:
- Enabling testing at energized sites
- Significantly reducing test lead lengths
- Filtering out EMI, RFI, and ground current noise
- Providing probe performance, data quality, and error identification
HP&D grounding specialists interpret CBT data that facility owners use to make informed decisions. HP&D offers a wide range of testing, including:
- Testing of energized systems per IEEE Standard 81
- Ground grid mat and system impedance
- Point-to-point continuity (bonding)
- Step and touch potential
- Transfer potential
- Soil resistivity
- Tower ground impedance (transmission, distribution, telecom, wind turbines)
- Fall-of-potential test (three-point)
- For isolated systems only
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.
