TRANSFORMER PROTECTOR WITH INTERNAL FAULT DETECTOR
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United States of America Patent
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Issued Date -
May 19, 2022
app pub date -
Nov 11, 2021
filing date -
Nov 11, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A fault detection system that includes a recloser configured to perform a reclosing operation in response to detecting overcurrent, where the recloser includes a communications device for receiving communications signals. The system also includes a transformer having an outer can, a sensor mounted to the can and extending into the can for measuring pressure therein, where the sensor includes a mechanical indicator that extends when overpressure is detected. The transformer further includes a radio mounted to the can and coupled to the sensor, where the radio includes a switch coupled to the mechanical indicator and a transmitter. When the mechanical indicator extends in response to detecting overpressure in the can it causes the switch to close which causes the transmitter to send a signal that is received by the communications device, which prevents the recloser from reclosing.
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