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| Inclusion of auto transformers in arc flash analysis https://brainfiller.com/arcflashforum/viewtopic.php?f=23&t=3722 |
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| Author: | Helen Workman [ Thu Jun 11, 2015 12:10 am ] |
| Post subject: | Inclusion of auto transformers in arc flash analysis |
I am modelling a small 415V network for an arc flash study. Three motors, 1 x 45kW and 2 x 90kW are started via an auto-transformer starter. Will the auto-transformer contribute anything to the arc flash study, or can I look at a worse case scenario, and consider the motors starting DOL? If the auto-transformer needs to be included in the study - what characteristics do I need to include? |
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| Author: | PaulEngr [ Thu Jul 02, 2015 10:30 pm ] |
| Post subject: | Re: Inclusion of auto transformers in arc flash analysis |
Shouldn,'t add anything if its out of the circuit during normal operating conditions. |
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