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A Novel Transducer for Monitoring Surge Currents in AC Mains: Expectations and Reality



Francois D. Martzloff, K. O. Phipps


The proliferation of surge-protective devices and switch-mode power supplies has radically changed the surge environment in low-voltage AC mains. Monitoring surge voltages has lost significance and can be misleading. Instead, surge currents should be monitored. The paper describes the performance of a silicon-based surge-protective device acting as a magnet for impinging surges in the presence of multiple metal-oxide varistors. This magnet is the first step toward the development of a transducer producing a voltage signal reflecting the surge current that can be delivered by the power system. That signal can then be applied to the voltage input of existing commercial power quality monitors.
Proceedings Title
Proc., Electromagnetic Compatibility (EMC) Symposium
Conference Dates
September 11-15, 2000
Conference Location
Brugge, 1, BE


electromagnetic compatibility, power quality surveys, surge measurements


Martzloff, F. and Phipps, K. (2000), A Novel Transducer for Monitoring Surge Currents in AC Mains: Expectations and Reality, Proc., Electromagnetic Compatibility (EMC) Symposium, Brugge, 1, BE, [online], (Accessed June 21, 2024)


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Created August 31, 2000, Updated October 12, 2021