What is the Significance of Half Crest Time in Power Transformer Data Sheets?

Thread starter ironsword
Start date Mar 21, 2015
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Time Transformer

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Half crest time, noted as 0.8 seconds in power transformer data sheets, refers to the duration it takes for the inrush current to reach half of its peak value. This measurement is crucial as it impacts the transformer's ability to handle transient conditions without damage. Understanding half crest time helps in assessing the transformer's performance during startup and fault conditions. It is essential for ensuring the reliability and longevity of the transformer. Further research on this term can provide deeper insights into its significance in transformer specifications.

Mar 21, 2015

ironsword

Dears,
during reading power transformer (0.71/33) kv data sheet, I found term "half crest time" which equals to 0.8 s,
the question is: what is that time and why is important?
thanks and kind regards.

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Mar 21, 2015

anorlunda

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It has to do with inrush current. I googled the phrase and found 8 references that can give you more detail.

Mar 21, 2015

ironsword

thank you Anorlunda

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