| Arc Flash Forum https://brainfiller.com/arcflashforum/ |
|
| Maintain or re-ignite and arc flash https://brainfiller.com/arcflashforum/viewtopic.php?f=2&t=1043 |
Page 1 of 1 |
| Author: | romano [ Wed Mar 24, 2010 8:45 am ] |
| Post subject: | Maintain or re-ignite and arc flash |
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 |
|
| Page 1 of 1 | All times are UTC - 7 hours |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|