I am thinking of buying your "Radio Equipped Super Chief Premium Set", and I understand it is recommended that I use the PS-515 as a power supply.
Your product specifications for the PS-515 say that it should be plugged into a wall outlet (AC 120V, 60Hz).
I live in Japan and the AC power supply is 100V and 50Hz.
I wonder if this difference in voltage and frequency poses any big problem in using a "Radio Equipped Super Chief Premium Set" here in Japan.
The lower voltage input is not related to the voltage output necessary for the Super Chief and other units.
Given the voltage difference, the PS515 may or may not be sufficient for your needs.
The transformer you choose should put out between 12VAC to 20VAC or 12VDC to 28VDC.
Because the command station CPU generates the DCC frequencies, it can be either 50hz or 60hz.
Your dealer may be able to help you with this issue.