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 Post subject: bolted fault current
PostPosted: Fri Jan 21, 2011 12:05 pm 
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Can someone explain what bolted fault current is?


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PostPosted: Fri Jan 21, 2011 12:15 pm 
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Location: Rutland, VT
In a nutshell, it is a fault with zero resistance. Visualize taking 3 phases or phase to ground or line to line, etc and bolting the phases together. This will give you maximum fault current.

On the other hand a arcing fault current has the resistance of the arc in air which will reduce the amount of fault current.

In terms of magnitude a bolted fault will have the maximum amount of current and mechanical stresses.

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PostPosted: Sun Jan 23, 2011 7:45 am 
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Thank you.
I think Bolted is a phrase,isn't it?


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PostPosted: Mon Jan 24, 2011 6:13 am 
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yes, it is a descriptive phrase. Would be interesting to find the origin of the phrase and first use.

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PostPosted: Tue Jan 25, 2011 3:43 pm 
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Because little relationship is between word meaning and use it.


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PostPosted: Wed Jan 26, 2011 9:08 am 
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Personal protective grounds "bolt" together the three phases and ground. If not removed prior to energization, you have a bolted fault.


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PostPosted: Thu Jan 27, 2011 5:32 am 
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Cambridge Dictionary Online: Bolted
Bolted was found in the Cambridge Advanced Learner's Dictionary at the entries listed below.
•bolt verb MOVE QUICKLY
•bolt verb EAT
•bolt verb LOCK
•bolt verb SCREW
•bolt down verb, at bolt (verb) EAT
•bolt sth on
•shut/close the stable/barn door after the horse has bolted


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PostPosted: Thu Jan 27, 2011 6:29 am 
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RezaN wrote:
Cambridge Dictionary Online: Bolted
Bolted was found in the Cambridge Advanced Learner's Dictionary at the entries listed below.
•bolt verb MOVE QUICKLY
•bolt verb EAT
•bolt verb LOCK
•bolt verb SCREW
•bolt down verb, at bolt (verb) EAT
•bolt sth on
•shut/close the stable/barn door after the horse has bolted

So if you encounter a bolted fault, you're screwed! :eek:


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PostPosted: Thu Jan 27, 2011 1:28 pm 
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Maybe ;) , I told you that Bolted is a phrase and little relationship is between word meaning and use it.


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