transformer info?

[WQ9E]

I acquired a couple of Basler plate transformers and I am probably going to use one in building a supply for an ART-13 but I am curious if anyone has info on what they were originally used in.  They are large sealed transformers marked Basler Plate Transformer Part T-302 and also carry the part number 5950-249-3200.  Primary has multiple taps for 105 through 125 volts and the secondary is rated 2200 VCT @ 212 mils.  The transformer weighs around 30 pounds so it appears to be a fairly conservative rating.

Rodger WQ9E