dino10

Dear Expert,
can slippring motor connect to vfd if yes how if no why?

waiting for your reply.

thanks...Rgds+

For slip ring motors, you can use drive specially made for it like simotras - but they are not VFD as frequency is not controlled in that

If you want to use VFD, you need to Short Rotor circuit

here is one nice disucssion regarding same

http://cr4.globalspec.com/thread/41855

Regards,

Devesh Vithani