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Earth-fault detector - GFD
Ground Fault Detectors (GFD) are typically installed on three-phase underground systems. GFDs sense a fault by detecting an imbalance in the vector sum of the currents in the three-phase cable. The GFD indicates a fault by showing a large reflective red target (8 square centimeters). GFDs coordinate with current limiting fuses, are available with trip response time settings, auxiliary contacts for SCADA monitoring, and in a variety of reset classes.GFDs are suited for application in harsh environments.
Detects ground faults by sensing the vector sum of the current flowing through a three-conductor cable.
Choice of three reset options (secondary voltage, load current, or time) to meet various application needs.
Install the split-core sensor on three-phase cables without opening the primary.
Large reflective red target is easy to see both at night and during the day.
Submersible, vinyl-coated sensing core.
Stainless-steel hardware and UV-stabilized materials ensure long product life.
Thousands of SEL GFDs in service today help customers around the world quickly locate ground faults.