Power Supply

Hello all. I am newbie to this group, have lurked for a while and
now going for my first post. I am retrofitting an early 80's
Bridgeport Seriies II that had a BOSS 9 control. I am using Rutex
servo drives and plan on running Mach2 control software. My
question has to do with the DC power supply that the machine came
outfitted with. I hope to reuse it as it seems to fit my
power/voltage requirements and it would save me money. My problem
is that I am getting some higher than expected voltages out of the
24 VDC bridge rectified supply. I would like to continue to use
this to power much of my air systems and to supply the control
voltage to the Rutex cards. I have 247 VAC coming from my single
phase mains. This is higher than the 230 VAC that the machine is
set up and transformers tapped for. My father works for the local
power company and says that I live very close to the sub-station,
thus the high main voltage that I will have to live with. My supply
is set to accept 115VAC from a transformer and turn it into 24VDC.
I am getting 127 VAC or so from the transformer and 36 VDC out from
the supply. THis seems like a big jump out for the relatively small
jump in. What I would like is a way to run numbers for the supply.
I can't seem to find a good source on the net. Does anyone have any
suggestions? The electronics books I have looked into have been
very general, not specific enough for what I desire. Does any one
have any suggestions in this area as well? I am open to any and all
info, I love to learn as much as I can about this stuff, so if
anyone has any personal knowledge or advice to share I would be much
appreciative. I have a back ground in mechanical engineering, so
electrical issues are not my expertise. My schools cross over
classes for us mechanical guys into electrical was lacking to say
the least. Thanks in advance for any advice or info. I look
forward to the many great post of this group in the future. Keep up
the good work.

-Rob