It is currently Mon Aug 10, 2020 7:53 am



Post new topic Reply to topic
Author Message
ekstra   ara
 Post subject: Incident Energy Calc of Faulted MV Cable in Manhole
PostPosted: Wed Jun 29, 2011 1:25 pm 

Joined: Mon Oct 19, 2009 7:42 am
Posts: 30
It has been suggested by some of my colleagues that IEEE 1584 equations can be used to calculate the incident energy resulting from a faulted MV cable in a manhole. Am I correct in my understanding that the equations in IEEE 1584 are only applicable to a fault between conductors having an air gap? If this is correct, I don't see how the equations are applicable to finding the incident energy of a faulted medium voltage cable that won't have any air gap between phases or to the grounded shield. The only way I can trick the software to making this calculation is to insert a bus with an air gap at the manhole location, but this does not realistically model a faulted cable or splice and I don't have any confidence in the results. Does anyone have any experience or guidance with this situation?


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Wed Jun 29, 2011 5:22 pm 
Plasma Level

Joined: Mon Jun 02, 2008 11:58 am
Posts: 1103
Location: Charlotte, NC
I agree with you, not to mention you are in a manhole and the dynamics of the whole space are different.


Top
 Profile Send private message  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 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