SoylentNews is people
SoylentNews
Cringley speculates like hell:
Delta Airlines last night suffered a major power outage at its data center in Atlanta that led to a systemwide shutdown of its computer network, stranding airliners and canceling flights all over the world. You already know that. What you may not know, however, is the likely role in the crisis of IT outsourcing and offshoring.
Do any Soylentils have inside/better information?
This discussion has been archived.
No new comments can be posted.
What Happened When Delta Went Down Yesterday?
|
Log In/Create an Account
| Top
| 73 comments
| Search Discussion
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
poverty, n.:
An unfortunate state that persists as long
as anyone lacks anything he would like to have.
(Score: 1) by jrmcferren on Tuesday August 09 2016, @10:42PM
The ground fault relay is probably factory set to 50 amps or so. These aren't your standard GFCI circuits, these are designed to trip to prevent a nasty arcing fault from occurring. When installed correctly the relay is set to take in account the tripping curve of the largest downstream breaker (both time and current) with the idea that a fault in a branch circuit will trip ONLY it's circuit breaker and the ground fault relay only trips IF there is a fault in the switchgear itself. In this case there was likely either the incorrect product installed (a low threshold device that operates more like a GFCI) or there was an accident and the relay was not coordinated with the downstream breakers. Remember, a ground fault should only ever activate one overcurrent (fuse or breaker) device if everything is coordinated correctly.