Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1992-03-19
1994-11-15
Regan, Maura K.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324713, 324509, G01R 3102
Patent
active
053651790
ABSTRACT:
A method and apparatus for measuring ground to earth impedance at frequencies above dc. A computer controlled instrument is provided for implementing a Three Point Measurement or a Fall of Potential method using three ground paths and a plurality of discrete frequencies in the range of from 5 Hz to 200 MHz. The complex impedance vector array, including absolute value and phase angle, and the real and complex components, for each frequency selected in the range may be determined. The acquired data is evaluated to identify antenna effects to improve the quality of the ground and to select the better ground path.
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Electronic Development Inc.
Regan Maura K.
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