I'm tasked to source a 1U step up transformer so that customers with only 120 VAC mains power can utilize 240 VAC for our products.
I've contacted TrippLite and APC who both offer a 2U (2 rack unit) form factor of step down transformers for 240AC input -> 120AC output (they're the only ones I could find that provided any form of rack mounted transformers). In chatting with them, they've given me a short answer that "step up transformers in this form factor is not an industry standard as it's easier to step down the incoming voltage. It also has to do with the wave form".
I come from a mechanical background and interpreted that as "there are physical/electrical component limitations to creating a step up transformer".
Can someone elaborate on why it is would be easier to develop a step down transformer in a 2U form factor vs a step up transformer?