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| How in-depth do you go? https://brainfiller.com/arcflashforum/viewtopic.php?f=4&t=6362 |
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| Author: | NeDCE [ Fri Nov 14, 2025 9:47 am ] |
| Post subject: | How in-depth do you go? |
Question based on some recent info-gathering I did: How much detail do you all include when modeling a 480V VFD control cabinet in an industrial setting? Let's say you have an 8'-tall VFD cabinet that's fed out of an MCC bucket. It in turn feeds a 150HP pump. In this order, the cabinet has: an incoming MCCB, a PF correction reactor, CTs with a digital overload trip unit (tied into contacts on the VFD), a strange 3-phase-to-9-phase transformer, a pulse rectifier, and the VFD. It may or may not have a capacitor bank as well for filtering. 3'-8' of conductors between each component. How much of that would you typically model? In your experiences, how much of that affects the AFC or IE? |
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| Author: | bbaumer [ Fri Nov 14, 2025 12:34 pm ] |
| Post subject: | Re: How in-depth do you go? |
This thread and video explains my position on it. viewtopic.php?f=23&t=6024 |
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| Author: | NeDCE [ Fri Nov 14, 2025 1:03 pm ] |
| Post subject: | Re: How in-depth do you go? |
Somehow I missed this at the time. I'll watch it today. |
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