It is currently Tue Dec 07, 2021 4:37 pm



Post new topic Reply to topic
Author Message
ekstra   ara
 Post subject: Does ARCPRO input expect bolted fault current or calculated arcing current?
PostPosted: Wed Dec 15, 2010 3:50 pm 

Joined: Wed Jun 24, 2009 4:45 pm
Posts: 41
Location: WA State
I'm coming from having done IEEE 1584 calculations and I'm now starting to use ARCPRO. It is not clear to me whether I should input the available bolted fault current in ARCPRO or use this value to calculate the arcing current per IEEE 1584 and then input this lower value of arcing current into ARCPRO.

I would appreciate some advice.


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Thu Dec 16, 2010 8:39 am 
Arc Level

Joined: Wed Jun 04, 2008 9:17 am
Posts: 428
Location: Spartanburg, South Carolina
There is little difference between arcing current and bolted current at medium or high voltage. I have also found that with typical inverse time-overcurrent protection, using the bolted current with slightly faster clearing results in higher incident energy that a lower current with slower clearing time. As a result, I use bolted fault currents with ARCPRO.


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Thu Dec 16, 2010 9:12 am 

Joined: Wed Jun 24, 2009 4:45 pm
Posts: 41
Location: WA State
Thank you for the feedback.

My first attempts at using ARCPRO were to compare the results for a given example that I had already analyzed using IEEE 1584. I'm realizing that the subtle difference between arcing current and bolted fault for this one case will become irrelevent once I start using ARCPRO to study across a range of fault currents.


Top
 Profile Send private message  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 7 hours


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
© 2019 Arcflash Forum / Brainfiller, Inc. | P.O. Box 12024 | Scottsdale, AZ 85267 USA | 800-874-8883