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Transformer Taps/LTC
https://brainfiller.com/arcflashforum/viewtopic.php?f=23&t=6365
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Author:  KarenMajala [ Mon Nov 17, 2025 11:01 am ]
Post subject:  Transformer Taps/LTC

Hi, I am new to arc flash modeling and was wondering what was best practice when dealing with transformers with OLTC (automatic on load tap changers). Is it best/common practice to run arc flash cases using the optimal LTC determined using the system load flow, or by using the max/min LTC parameters?

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