Phase-selective interruption for three-phase AC circuits with Thomson coil actuated switches and breakers
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United States of America Patent
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Nov 14, 2023
Grant Date -
Sep 7, 2023
app pub date -
Mar 2, 2022
filing date -
Mar 2, 2022
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Abstract
A system and method for interrupting power in a three-phase power system interrupts power in the faulted phase and the next sequential phase at high speeds, while interrupting power in the remaining phase at a normal operation speed. Limiting high-speed interruption to only two phases requires significantly less energy storage than implementing high-speed interruption in all three phases. When hybrid circuit interrupters are used, the need to wait for a zero-crossing in the current signal in order to initiate interruption operations is eliminated.
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