We have a 220 VAC A2996A 1.3KVA UPS rackmounted with our 918.
I thought I could fool the system and use the UPS to power some
110 VAC peripherals (like to system console).  To do this, I
split the 220 voltage in a duplex receptacle by using only one
leg of the 220.  If figured it like this:  hot-to-hot is 220,
hot-to-neutral/ground is 110.  This works okay so long as the
line power does not fail.  If the line power fails and the UPS
kicks in, then something very interesting happens.  The hot-to-hot
220 circuit is okay, but now the hot-to-neutral/ground is also
220, instead of being 110!  Fortunately I put the peripherals on
a surge suppressor which kicks out when the 220 appears on the line.

Is this "normal" behavior for this UPS?  Should I just bite the
bullet and buy another UPS for use with the peripherals?  Actually,
I thought there would be a 110 VAC outlet on the UPS to at least
power the system console, but there isn't.  Thanks for any help
you can provide.

Jim Phillips                            Manager of Information Systems
E-Mail: [log in to unmask]      Therm-O-Link, Inc.
Phone: (330) 527-2124                   P. O. Box 285
  Fax: (330) 527-2123                   Garrettsville, Ohio  44231