Duke Boys at it again....
- Thread starter Mirac
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OP
High voltage section on left with elbow connectors. Low voltage section on right with spade lug connections.
OP
Yep, and always a chance to blow a fuse at the hub pulling the elbows and taking down the whole block.
lol
OP
The concrete and conduit didn't give him a clue ?
We've had a couple transformers blow the doors off and catch fire.
Then some exterior busway went phase to phase and plasma pitted the windows and concrete walkway.
Those cause the 3 - 2 meg. Gens to run a month strait.
Yeah... Fun times
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One of the interview questions we just used was “give us some common relay numbers”. It was for an electrical engineer in an electric distribution system job thst would do protection coordination. You’d be surprised at some of the basics people can’t answer.
Thread needs a musical accompaniment.
Thought this thread would be about a bunch of lacrosse players not raping yet another stripper.
Concrete and conduit? Dont make me laugh. This was back in the CP&L days not that Duke or whatever unholy abomination they are now would do things any different. Direct buried 25KV lines all over a mission critical campus.
OP
I think some are 67 , 86 and 87 Im no engineer and would have to look up what they do. And study how they operate or what they operate. I just hear stuff in passing..
I would too, but I think you’re correct.
67= directional over current
86= lock out relay we typically have an 86e or 86g
87= differential relay...
I may be wrong here on any other than the 86 as we deal with those every day and I have been out of school for way to long.
OP
Took an EE elective course as undergrad on Applied Protective Relays, Westinghouse text book. Hardest EE course I ever took. Too many classroom hrs, too much home work and a project that we would have never gotten done w/o a study buddy who had access to a Deck Writer and TUCC