MAGNETO OPTICAL CURRENT TRANSDUCER WITH IMPROVED OUTAGE PERFORMANCE

摘要

A MOCT metering system includes a cutoff module (14) that ensures zero output when values from an optical module fall below a threshold value. The cutoff module includes an RMS to DC converter (36) that drives a comparator (38). The comparator drives a switch (40) that causes the cutoff module to pass through the measured signal unmodified if above a threshold value and to output a zero voltage signal if below a threshold value.