I operate the grid for a living. On the distribution side of things (the grid network feeding homes and buildings) there are devices we refer to as reclosers. Components will trip open when there is a fault sensed on the system and depending on how the reclosers are setup they will close it back in after X amount of time (quite short). If the fault is gone then it stays closed and if still there is opens back up, settings can be changed to have it try this multiple times.
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