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makoester1
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Post subject: 12 Pulse VFD Short-Circuit and Arc Flash Calculations  Posted: Thu May 12, 2022 6:22 am |
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Joined: Thu Jun 09, 2016 6:17 pm
Posts: 11
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Hi,
When modeling a 12-Pulse VFD that is fed from multiple transformers or a single multi-winding transformer, is it common to only utilize the fault current from one of the two transformers/windings? If the VFD input sources are within the same enclosure, should a scenario be considered where a fault could propagate from one source to the other and both sources of fault current should be considered?
Thanks for the input.
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makoester1
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Post subject: Re: 12 Pulse VFD Short-Circuit and Arc Flash Calculations Posted: Tue Nov 01, 2022 4:01 am |
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Joined: Thu Jun 09, 2016 6:17 pm
Posts: 11
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Hi,
Anyone have any input or guidance regarding this?
Thanks
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stevenal
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Post subject: Re: 12 Pulse VFD Short-Circuit and Arc Flash Calculations Posted: Wed Nov 02, 2022 1:37 pm |
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Joined: Tue Jan 13, 2009 5:00 pm
Posts: 612
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Same enclosure and no barriers? Yes, I would consider a fault involving both sources.
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