ALFA Insurance
Alliant Energy
AT&T
Babcock & Brown
BC Hydro
Burns & McDonnell
CDC
CheckFree Corporation
Colorado River Authority
Consolidated Edison of New York
Covanta Energy
Cullman Electric Cooperative
Cumberland EMC
E*TRADE
Entergy
Forked Deer EMC
Georgia Power Company
Georgia Transmission Corporation
Hartsfield-Jackson Intl Airport
Hewlett-Packard
Holder Construction Company
Imperial Irrigation District
Inglett & Stubbs, LLC
Microsoft
Minnesota Power & Light
New York Power Authority
Norfolk Southern Corporation
North Georgia EMC
Parsons Commercial Group
Pike Electric
Progress Energy
Pro-Link Tech
Public of New Mexico
Public Service Electric & Gas
Quality Technology Services
Regions Financial Corporation
Saudi Aramco
State University of New York
Target Corporation
Tennessee Valley Authority
TransAlta
UnitedHealth Group
Verizon
SMART GROUND™ MULTIMETER
The Smart Ground® Multimeter, or SGM, is a computer controlled multi-function instrument for measuring grounding systems. The SGM was developed by Dr. A.P. Sakis Meliopoulos under the sponsorship of the Electric Power Research Institute (EPRI). The data obtained by the meter is processed by the SGM software which filters noise, removes harmonics and signal irregularities, and corrects voltage and transducer errors. The SGM package includes hardware (an SGM source unit and a test/calibration kit), accessory components (voltage and current probes, voltage cables, current return cable, etc.) and software (WinSGM). The SGM software measurement functions include the following:
- Ground Impedance Measurement
- Soil Resistivity Measurement
- Tower Ground Resistance Measurement
- Touch Voltage Measurement
- Step Voltage Measurement
- Ground Mat Impedance Measurement
- Transfer Voltage Measurement
- Low Impedance / Continuity Measurement
- Fall of Potential Method Measurement
- Oscilloscope Function
For details about the SGM functions, please see http://www.ap-concepts.com/win_sgm.htm.
For details regarding the differences between traditional Fall of Potential versus SGM ground impedance testing, please view FOP vs SGM Ground Impedance Tests
Hood-Patterson & Dewar is the sole, worldwide distributor for the SGM. Please contact Lyn Cosby for ordering information: Lcosby@hoodpd.com, office 770-453-1415.