Calculating Trip Times of SEL and IEEE Inverse-Time Overcurrent Protection Curves

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In this video we discuss how to hand calculate the trip times of SEL U and IEEE inverse-time overcurrent curves.
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00:00 Intro
00:19 Introduction to SEL U inverse-time overcurrent curves
05:15 Example trip time calculation
08:33 IEEE standard inverse-time overcurrent curves
11:20 TCC plotter spreadsheet
13:45 Outro

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[@saurabhdwivedi3620]

Excellent illustrations Appreciate it

[@romeroengineering]

Thanks!

[@asbargathi]

Perfect job Really appreciated

[@romeroengineering]

Thanks!

[@shoutxp1534]

Very informative

[@romeroengineering]

Glad it was helpful!

[@akwasiasare4833]

Very eduative

[@romeroengineering]

Thanks Akwasi!

[@leusmaximusx]

how can this be applied to TCC of LV adjsutable circuit breakers , does manufacturers use the same equations or it is developed by material tests , thanks