It is currently Sat Jul 11, 2020 12:09 am



Post new topic Reply to topic
Author Message
ekstra   ara
 Post subject: ATS Load Connection Lugs
PostPosted: Wed Jan 08, 2020 10:05 am 

Joined: Fri Nov 01, 2019 7:14 am
Posts: 2
I'd like your thoughts on which electrode configuration these lugs fall under. I'm thinking the tops of the lugs and the bolt openings could fall under 'HCB' based on figure G.40 (of 1584 2018) and figure G.43.

I'm curious though if the horizontal distance of these lugs compared to the length of the horizontal electrodes used in testing is enough to be comparable. I don't recall any guidance in the standard.

Anyway I'd really appreciate any feedback you could offer.


Attachments:
ATS Lugs.PNG
ATS Lugs.PNG [ 577.17 KiB | Viewed 2185 times ]
Top
 Profile Send private message  
Reply with quote  
 Post subject: Re: ATS Load Connection Lugs
PostPosted: Fri Jan 17, 2020 9:03 am 

Joined: Fri Nov 01, 2019 7:14 am
Posts: 2
Anyone?


Top
 Profile Send private message  
Reply with quote  
 Post subject: Re: ATS Load Connection Lugs
PostPosted: Fri Jan 24, 2020 6:52 am 

Joined: Wed Jul 25, 2012 11:41 am
Posts: 7
Location: Halifax, NS
Looking at the picture, I think that the configuration that you would get the "best" answer is either VCB or VCBB.

I grabbed the attached picture from the Brain Filler page - Source (I tried to put it inline but this forum theme doesn't autoscale images)

Like you mentioned, the lugs likely aren't directing the arc out of the box. I think that it is more likely that the arc will propagate towards the side of the box and then out/down. There will be reflection off the back of the box and side.

The energy distribution would be the same as VCB and VCBB, but I think its going to be closer to the real world answer than HCB; without under-estimating.

I would like to hear some other people's thoughts on this too.

Cheers,

Jeff M


Attachments:
Electrode-Configurations[1].jpg
Electrode-Configurations[1].jpg [ 1.02 MiB | Viewed 2043 times ]

_________________
Jeff M
My Electrical Safety Page
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