User talk:StarDelta

What is going on? World Blogs Clogs Elections The Bar (talk) (talk) (talk) (talk) (hic) Welcome to RationalWiki, StarDelta! Check out our guide for newcomers and our community standards! Tell us how you found RationalWiki here! If you are interested in contributing: Read what our articles are intended to be Check out the to-do list See our help page and Wikipedia's formatting cheatsheet If writing a new article, consider writing up a draft And most importantly: Pull up a goat and have some fun!

What happened to DeltaStar?   ^Contribs_Talk 16:03, 27 February 2010 (UTC)

Hi Toasty! DeltaStar lives on! DeltaStar_{Senior Sysop}^{Speciationspeed!} 16:58, 27 February 2010 (UTC)

The only thing I know about Star:delta is that it's how you wire a 3phase motor to give max torque at start up (I think that was it, but it's 40 years since I last met it)   ^Contribs_Talk 17:05, 27 February 2010 (UTC)

That's not correct, I'm afraid Sue; Star-Delta starting is used to limit the inrush current when a 3-phase motor is started. It is not used too much nowadays due to advances in power electronics making variable frequency drives cheaper. You are of course forgiven for your mistake, given that it was 40 years ago! (Incidentally, squirrel cage induction motors give maximum torque at startup by virtue of torque being a product of slip; slip is 100% at startup) For more 3-phase information, please do not hesitate to ask! StarDelta (talk) 22:19, 27 February 2010 (UTC)