Step-up and Step-down Transformer for Voltage Drop

[bwl1285]

I am trying to confirm I have the correct transformers selected to take care of a voltage drop scenario due to distance. From the panel, I am bringing 3-wire, 120/240v, single phase and stepping it up to 3-wire 480v. Running 480v about 1500' to an equipment rack and stepping 480v back down to 120/240v. I believe I can order two of the same transformer and wire it LV to HV to step up and then HV to LV to step it down. Is this correct?

Which diagram would I use to wire the transformer at each location?

 

[electrofelon]

On the supply end, just give the transformer 240V to X1 and X4. For the 480 run, no need to run the center tap/240 conductor, although you do need to ground the system and run an EGC which would likely be the center tap, however you could use 250.30(A)(1) exception #2 if it applies and thus run only the two 480 conductors.

Why not just go for the gold and run 600V? There isnt really any disadvantage.