tand function in excel? 1

[vwdevotee]

I found an equation in a Journal article and I'm trying to write it into a spreadsheet. The problem is 1) I'm not sure what the tand functional actually is and 2) Excel doesn't seem to have it as a built in function. One of hte footnotes told me it was a Tangent Delta function, but Google isn't being too helpful in finding out what that means. Can anyone point me towards a resource that explains it? Based on the explanation I'm hoping I can figure out a way to calculate it in Excel. If someone can tell me if it's hidden in Excel somewhere that would also be very helpful.

Generalized a bit, the formula is R = k*tand(C)

Thanks in advance.

 

[SkipVought]

Hi,

Googled:

http://www.mathworks.com/help/matlab/ref/tand.html?requestedDomain=

http://www.mathworks.com

Tangent of argument in degrees.

Of course Excel uses radians.

Skip,

_{Just traded in my OLD subtlety...
for a NUance!}

 

[vwdevotee]

If that's all it is, then that's easy. Is there such thing as a Tangent Delta function? Is the foot note just wrong or something? I'm thinking I should contact the author and ask what's up.

 

[SkipVought]

I don't know why I'm Googling for you???

http://www.electrotechnik.net/2009/05/tan-deltatest-on-insulation.html

(there may be others, but you made no statement to clarify the direction of interest)

But I suppose I'm genuinely curious and do learn things by doing some digging on occasion.

Do you have some other research you would like the members here at Eng-Tips to perform on your behalf?

Skip,

_{Just traded in my OLD subtlety...
for a NUance!}

 

[GregLocock]

I would assume that you could go through the derivation of the equation and so figure out where tand comes from.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[LRJ]

Are you sure the delta isn't actually an angle? I've never seen a tanδ mathematical function - I have however seen plenty of δ angles in engineering text books.

 

[IRstuff]

Maybe the OP can post a screenshot of the equation and its context. Sometimes, that's worth more than all the descriptions provided.

TTFN
I can do absolutely anything. I'm an expert!
faq731-376 forum1529

 

[electricpete]

Just curious, does this paper you were reading have anything to do with testing electrical insulation?

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(2B)+(2B)' ?