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MUBINULLAH KOTWAL
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Post subject: Incident Energy Calculations-1  Posted: Sun Jun 22, 2025 8:36 am |
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Joined: Sun Jun 22, 2025 8:09 am
Posts: 1
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Dear Engineers.
Greeting.
I want to do the Incident Energy calculations for 33 KV GIS switchgear & 66KV / 120 KV / 220 KV Load Break switch in the Outdoor switchyard ( Transmission line Power entering in the outdoor open air switchyard ).
What is the best method to calculate ? Because I know that IEEE-1584 2018 can not be used.
Please advise.
Thanks.
Mubin / Africa.
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mpparent
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Post subject: Re: Incident Energy Calculations-1 Posted: Mon Jun 23, 2025 9:54 am |
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Joined: Thu Apr 18, 2019 11:42 am
Posts: 166
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AimeeJacobson
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Post subject: Re: Incident Energy Calculations-1 Posted: Sun Dec 21, 2025 7:14 pm |
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Joined: Sun Dec 21, 2025 7:12 pm
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Arc flash depends heavily on the structure of the GIS system. In my personal opinion, highly durable designs like Siemens GIS systems are almost incapable of arc flash, because all conductive parts are enclosed in a grounded metal casing, similar to a phase-isolated bus duct system. However, not all GIS systems have the same level of insulation, so the specific structure of each type needs to be carefully considered. Furthermore, special attention should be paid to cable connection areas, as these locations are not completely enclosed. In addition, some auxiliary equipment connected to the GIS, such as air-insulated fuses or control power transformers, also pose a risk of arc flash.
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