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jsoar
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Post subject: Entering in Fault Current Information  Posted: Mon Oct 14, 2024 6:06 am |
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Joined: Wed Jun 12, 2024 5:19 am
Posts: 33
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Good morning,
Can someone help me with entering this into SKM?
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Fault Current Information.jpg [ 85.42 KiB | Viewed 9765 times ]
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bbaumer
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Post subject: Re: Entering in Fault Current Information Posted: Mon Oct 14, 2024 9:24 am |
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Joined: Fri Jul 08, 2016 10:01 am
Posts: 434
Location: Indiana
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That data sheet looks like it's from Duke and I'd bet money the %Z is not actual but straight out of the Duke red book instead. Some of their transformers have the nameplate on the outside, not in the secondary compartment. Not many, but some do. I'd check that if you can. If you ask them for actual %Z they probably won't respond or provide it so about all you can do is use the 5.32% or run multiple scenarios and worse case.
I sent you a video I made that touches on this. It's one I made a couple years ago but took it down as I left out some stuff that should have been included and it just wasn't a very good video to start with. Hope it helps.
_________________
SKM jockey for hire
PE in 17 states
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jsoar
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Post subject: Re: Entering in Fault Current Information Posted: Mon Oct 14, 2024 12:30 pm |
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Joined: Wed Jun 12, 2024 5:19 am
Posts: 33
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Yes, its from Duke.
Thank you for the video!
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mpparent
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Post subject: Re: Entering in Fault Current Information Posted: Wed Oct 16, 2024 6:52 am |
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Joined: Thu Apr 18, 2019 11:42 am
Posts: 163
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In these cases, I'll use +/-7.5% of the Z given by the utility when I suspect the # is canned. Then run scenarios around those #'s as Brent suggested.
Mike
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bbaumer
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Post subject: Re: Entering in Fault Current Information Posted: Wed Feb 26, 2025 5:33 am |
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Joined: Fri Jul 08, 2016 10:01 am
Posts: 434
Location: Indiana
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