For the kind of coverage geeks can find nowhere else:
The default configurations in a country where legal settlements can be substantial tend towards the conservative side. We don’t know if that was a factor in this event but we do know that no fault was found and the power was stable for the remainder of the game. This was almost certainly a false trigger.
Because the cause has not yet been reported and, quite often, the underlying root cause is never found. But, it’s worth asking, is it possible to avoid long game outages and what would it cost? As when looking at any system faults, the tools we have to mitigate the impact are: 1) avoid the fault entirely, 2) protect against the fault with redundancy, 3) minimize the impact of the fault through small fault zones, and 4) minimize the impact through fast recovery.
And, oh yes, much, much more at this link, including discussion of $1m backup generators and how many TV commercials it would take to guarantee the safety of Superbowl lighting.
Not Unreasonable 