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- Thread starter cooldesign
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- Location
- Charlotte, NC

Have you read the 2012 70E?

- Location
- Charlotte, NC

- Location
- North of the 65 parallel

- Occupation
- EE (Field - as little design as possible)

In addition to NFPA 70E, I recomend you read IEEE 1584. It is a proprietary document, so no I don't have a link. However, you are a student. I recomend you go to a university library. I'm certain they will have access.

Now, let's look at what is not clear about this issue of "technology gap" - cause I don't know what that means either.

First:

Arc-flash calculations are based on a mathematical model derived from emperical lab test data. Like all math models, it must be applied within its limitations. The model just is not valid outside the limitations. Maybe this is what you are talking about - I can't tell from your questions.

Second:

I respectfully suggest that after you have completed your reading - come back and ask your questions again.

ice

- Location
- North of the 65 parallel

- Occupation
- EE (Field - as little design as possible)

Another thought just occured to me that could help understand what you are looking for;i have been looking through arc flash last 4 months, and i am kinda trying to figure out what is missing in arc flash calculations? ...

As you said, "i have been looking through arc flash last 4 months ...". What exactly have you looked through or read? That could give some clues as to what you are thinking.

ice

- Location
- Seattle, WA

- Occupation
- Electrical Engineer

Last I heard, there were no equations for DC systems, single phase systems, systems rated lower than 208 volts, and systems rated higher than 15,000 volts. Perhaps some additional experiments have been done recently, and additional systems are now covered by arc flash equations.

- Location
- Seattle, WA

- Occupation
- Electrical Engineer

- Location
- Charlotte, NC

I beleieve IEEE 1584 had a $12M budget for the DC arc flash testing they recently conducted.

- Location
- Charlotte, NC

Here is some good reading for you, Jim is a friend of mine and also a IEEE 1584 commitee member, he has some good info on his site regarding single phase and DC arc flash studies. You can download his 3 part series on how to perform an arc flash study from his site and I also highly recommend his book "Arc flash hazard calculations"

http://www.brainfiller.com/main/Default.aspx

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