verifying over current protection design

[14041972]

This website (

http://www.bussmann.com/library/docs/EPR_Booklet.pdf#search)

was referred to someone last week in electrical motor forum.It explains methods of calculating over current protection, short circuit protection, component protection and cable sizing in a power system. The calculations are understandable and easy to work out but my question is, is there another method of verifying or testing that the figures arrived at are correct. I mean is there power system design software that can prove these manual design calculations.

 

[wbd]

There are several software packages out there that will do short circuit, power flow and protection studies. Some are geared towards utilities and others toward industrial. I use EasyPower and the options I have allow me to do all the above as well as verify ratings of equipment and perform an arc flash study. EasyPower's website is

http://www.easypower.com

Other packages are Aspen, EDSA, ETAP.

 

[RalphChristie]

Do a search on the site. It is many times discussed in the past.

thread238-94902
thread238-73702
thread238-108348
thread238-64203
thread238-50735

For a free program check ijl's site (he is also a forum member):

thread238-43220

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