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| 12 Pulse VFD Short-Circuit and Arc Flash Calculations https://brainfiller.com/arcflashforum/viewtopic.php?f=23&t=5575 |
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| Author: | makoester1 [ Thu May 12, 2022 6:22 am ] |
| Post subject: | 12 Pulse VFD Short-Circuit and Arc Flash Calculations |
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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| Author: | makoester1 [ Tue Nov 01, 2022 4:01 am ] |
| Post subject: | Re: 12 Pulse VFD Short-Circuit and Arc Flash Calculations |
Hi, Anyone have any input or guidance regarding this? Thanks |
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| Author: | stevenal [ Wed Nov 02, 2022 1:37 pm ] |
| Post subject: | Re: 12 Pulse VFD Short-Circuit and Arc Flash Calculations |
Same enclosure and no barriers? Yes, I would consider a fault involving both sources. |
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