VFD Isolation Transformers
VFD Isolation Transformers
(OP)
I have seen numerous applications of VFD's both with and without isolation transformers. I have put in many without them with no problems.
I have a new project where the client want's to use them. The easy way out is to just put them in, but are they REALLY needed?
What are your experiences related to this issue?
THANKS!
I have a new project where the client want's to use them. The easy way out is to just put them in, but are they REALLY needed?
What are your experiences related to this issue?
THANKS!






RE: VFD Isolation Transformers
Gunnar Englund
www.gke.org
RE: VFD Isolation Transformers
12 pulse (and 18/24 pulse) use transformers in front of them to shift the incoming phase angles as a way of mitigating harmonics, but that's not about isolation per se, it's about the phase angle.
http:/www.jraef.com
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: VFD Isolation Transformers
RE: VFD Isolation Transformers
NEMA Application Guide for AC Adjustable Speed Drive Systems
http://www.nema.org/stds/acadjustable.cfm (free download)
RE: VFD Isolation Transformers
Gunnar Englund
www.gke.org