On Wed, 26 Apr 2017 12:55:11 -0700 (PDT), wrote:

I have a transformer shorted from pri to sec for an industrial CNC machining center. It's in an Aartac type 921A power supply. The XFR is a Wagner + Grimm type EE554 made in Switzerland that I can't seem to locate. Anyone know a source or know of a trusted rewinder I can send this to?

If you know the xmfr specs you should be able to find one on ebay, I
would think. CNC controls have been around a long time and all sorts
of parts for them are on ebay.
Eric