A retrofit 60 Hz current sensor for non-intrusive power monitoring at the circuit breaker
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We present a new sensor for power monitoring that measures current flow in a circuit breaker without permanent modification of the breaker panel or the circuit breaker itself. The sensor consists of three parts: an inductive pickup for sensing current from the breaker face, an inductive link designed to transmit power through the steel breaker panel door, and a passive, balanced JFET modulator circuit for transmitting information through the inductive link. The demodulated breaker current signal is available outside of the breaker panel door. This sensor provides a solution for low-cost, non-intrusive retrofit of any circuit breaker panel for centralized power monitoring.
Date issued
2010-02Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer ScienceJournal
Proceedings of the 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition
Publisher
Institute of Electrical and Electronics Engineers
Citation
Clifford, Zachary et al. “A Retrofit 60 Hz Current Sensor for Non-intrusive Power Monitoring at the Circuit Breaker.” in Proceedings of the 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition, IEEE, 2010. 444–451. Web.
Version: Final published version
Other identifiers
INSPEC Accession Number: 11204780
ISBN
978-1-4244-4783-1
ISSN
1048-2334
978-1-4244-4782-4