SERVICES (continued)

Since measurements of the geomagnetic field, the average electric fields, and the current flowing on a power line neutral were all available on a time-tied basis, it was possible to examine the relationship between calculated and measured electric fields and power line currents.  Measurements were made on a continuous basis, and data was collected each month. Immediate examination of data after a severe magnetic storm or electrical power anomaly was available by download.

Metatech developed the data acquisition system, its controlling software, and analysis tools for studying the data. Results were displayed in a number of ways. The accompanying figure shows a comparison of a measured average electric field with a calculated electric field derived from the measured geomagnetic field and a model of the earth conductivity in the region.

Electromagnetic Compatibility (EMC)

Definition: "The capability of electrical and electronic systems, equipments, and devices to operate in their intended electromagnetic environment within a defined margin of safety, and at design levels of performance, without suffering or causing unacceptable degradation as a result of electromagnetic interference." (ANSI C63.14, 1992)

What We Do: Metatech provides EMC services to customers seeking reliable analyses of electromagnetic emissions or immunity in support of EMC protection and/or testing.

 

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