Power System Study Software

[Sparker]

Hi

Anyone know of a cheap (free) software package that can reliably calculate volt drops, fault current etc in medium voltage systems?

 

[peebee]

Bussman fuse used to offer a package like that, I don't know if they still do or not. It was very similar to SKM PowerTools but included a library for only Bussman devices. You could add your own devices to the library, though. I'd check with them and the other overcurrent device vendors.

 

[Sparker]

Thanks for the advice, I will follow it up

 

[busbar]

Don't forget Dr Grady's:

http://www.ece.utexas.edu/~grady/

-- scroll to "Free power system software"

 

[patpat]

Try elite softwares.

 

[electrifire]

I have used the old Bussman programs. It calculates fault current, but not voltage drop. It is a good program if still available. It will handle more than one source and about 50 busses at medium and low vlotage.

Cutler Hammer had a graphics program that calculated fault current and voltage drop. It was not free however and I did not find it useful. Provided too many graphics errors and omissions. Cuttler Hammer is promoting a new program but do not know anything about it.

I suggest you look at MikeHolt.com for fault calculation and voltage drop spred sheet programs. These are probably in archives.

 

[BJC]

pow-r-designer is still free.

http://www.ch.cutler-hammer.com/NAS...c=Apubarticles&cid=990803269912&Sec=documents

 

[Sparker]

Thanks, Im downloading it now - will let you know

 

[Ares]

For voltage drop try

http://members.rogers.com/g.cygalski/vdrop.htm

or

http://www.execulink.com/~cygalski/vdrop.htm

It has build in Canadian and USA ampacity tables, wire cross section data, Motor FLA data. It also shows the cost on energy lost due to the wire resistance, and helps select conduit size, all with one simple interface.

 

[DirectCurrent]

I used PSS/VIPER - you can get it free for 30 days from

http://www.pssviper.com

.