Arc Flash Reduction Techniques 2

[milano14]

Dear all, i wanna ask about arc flash. which software that can modelling zone selective interlocking protection (ZSI) for reduce arc flash energy? does etap can do that? thanks..

 

[RonShap]

Brochure says it does

http://etap.com/downloads/brochures/arc-flash.pdf

 

[milano14]

thanks ron. but i didnt found it in etap help. i still dont know how to simulate zsi method. have you ever try it in your etap?

 

[wroggent]

In the current release of etap there is not a way to automatically model ZSI. To determine the benefits of ZSI you must manually choose fault clearing times by either (1) manually entering the fault clearing time in the bus editor (you must enable this in the "AF FCT" tab in the short circuit study case options), or (2) select the "Fixed FCT" box and enter a clearing time on the "Arc Flash" tab of a bus that you want to evaluate. The second option will allow other buses to automatically select protective devices if you want, only the bus which you have checked the "Fixed FCT" box will have a non-automatically determined FCT. This is explained in the "Calculation Methodology" topic in the help file. These are also the methods you would use to evaluate light relays. Version 12.6.

 

[milano14]

thanks for your comment wroggent. it will help me. So the point is in the etap there are no option for automatically model zsi. we can model zsi just with manually set the clearing time. thanks a lot i will try .