South American Power Outage, 48 million affected

Hackaday covered the outage and some background:

And a commentator (‘Moebiusar’) supplies a video of the official version of events (in Spanish), and offers a precis:

…another Argentinian here. In this link: you can see the official version about the incident. It’s a ~three-hour-long (surprisingly technical for the place IMO) hearing that went on 2019/07/03. Long story short, they were doing some maintenance on one of the biggest transmission lines and “forgot” to update the Automatic Generator Disconnection parameters upstream. Later on, a common line fault (aggravated by human factor) led to a full blackout.

Another commentator offers a much shorter summary video, also in Spanish:

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