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senthilkodisundaram
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Join Date: Jun 2010
Location: India
Posts: 25

Short Circuit Current

09/02/2010 2:46 AM

Dear all,

Conductor short circuit current offered by different manufacturers like 0.16,0.172,0.156 kA/sec. Which conductor is better lower value or bigger value? Any one can suggest for me

K. Senthil
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#1

Re: short circuit current

09/02/2010 6:14 AM

What is the application?

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senthilkodisundaram
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Join Date: Jun 2010
Location: India
Posts: 25
#2
In reply to #1

Re: short circuit current

09/02/2010 6:33 AM

Ita a LT control cable for instrumentation purpose
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Anonymous Poster
#3

Re: short circuit current

09/02/2010 7:48 AM

The answer doesn't need any thinking at all if you use your logic little bit:

The bigger one is the best-less Resistance.
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TonyS
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Location: Resting under the Major Oak
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#4

Re: Short Circuit Current

09/02/2010 8:40 AM

I'm trying to get my head around conductor short circuit currents when applied to a control cable, why didn't you just look at ohms per metre.

It would be one hell of a control system if you've got to start worrying about fault currents in KA

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Anonymous Poster
#5

Re: Short Circuit Current

09/07/2010 1:46 AM

The values you given are all wrong....reconfirm it first.
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electricalexpert65
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Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#6

Re: Short Circuit Current

09/11/2010 10:29 PM

Obviously the higher the SC Withstand, the better. But perhaps you could be oversizing the cable in that case. Please do a fault level calculation study and select the cable with a nearest higher SC withstand capacity.
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Users who posted comments:

Anonymous Poster (2); electricalexpert65 (1); PWSlack (1); senthilkodisundaram (1); TonyS (1)

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