It is currently Wed Dec 13, 2017 7:57 am



Post new topic Reply to topic
Author Message
ekstra   ara
 Post subject: Maintain or re-ignite and arc flash
PostPosted: Wed Mar 24, 2010 8:45 am 
Offline

Joined: Wed Mar 24, 2010 8:00 am
Posts: 1
This is my first use of this site and I find it very helpful. I have recently being involved in trying to understand arc flash and PPE requirements for our application in power generations. The topic is relatively new to me and I am in a learning mode.

I have a specific question with respect to an arc blast (caused by contamination of a direct short by a tool) turning into a sustaining arc once the object is disintegrated. I understand the general principles of the air ionizing and sustaining the inductive fault, but I am trying to determine the relationship between voltage and distance required to sustain the fault. I believe there is a minimal distances at which a certain voltage will sustain or distinguish the fault. Can anyone point me to some appropriate documentation or comment on this subject.

Case in point: I have a source of power from a generator that is unprotected by any ground fault detector and there is concern if a 240V 3-phase line should short out, (source of feed => 13.3 kA sudden peak short circuit peak current with a sustained 5.1kA rms), would it be sustainable??? Appreciate your comments, Art


Top
 Profile Send private message  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 2 guests


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:  
© 2017 Arcflash Forum / Brainfiller, Inc. | P.O. Box 12024 | Scottsdale, AZ 85267 USA | 800-874-8883