×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Static Switcher Unit

Static Switcher Unit

Static Switcher Unit

(OP)
Have a static switcher installed feeding a server, now we have fed this unit from two seperate supplies, it is rated for single phase work and my query is this....

If for some reason we lose sync on the UPS units feeding the supply then we could have a difference of about 410v between like for like phases on the dual strings. Would this have an impact on the unit and would it lead to problems with the set up ?

The unit is an APC type static switch.

Rugged.

RE: Static Switcher Unit

(OP)
finally got an email back from APC about this one and thought that you might like to know the result in case you have any problems like I had.

A static switcher operates as two seperate units and as such any voltage between the two inputs doesnt matter, so yeas we can have a phase difference of about 415v on a 240v circuit and it wouldnt stress the unit.

That is 415v between input 1 and input 2, not 415v between input 1 or 2 and neutral....

Rugged

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources