×
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

Two Phase Under Voltage Relay

Two Phase Under Voltage Relay

Two Phase Under Voltage Relay

(OP)
Hi,

   Can anyone suggest Two Phase Under Voltage relay? I am looking for a auxilary relay which can be mounted on DIN Rail  and I have only Two Phase(R and Y) of VT as input.

Thanking you in advance.
Yeruk

RE: Two Phase Under Voltage Relay

If all you have is R and Y, use a single phase relay. If you have a third wire, how is it derived?
 

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Two Phase Under Voltage Relay

What Bill said.
You can two single phase relays and connect contacts of them in parallel or in series

RE: Two Phase Under Voltage Relay

Can you use a 3 phase relay and wire 2 of the relay inputs with R and 1 input with Y?

RE: Two Phase Under Voltage Relay

IS this really 2 phase (vs. open delta)?  If so, I believe you can look into protection and controls for German based railway systems, which are 2 phase.  Siemens, Alstom, ABB, etc.

What is your exact application?

RE: Two Phase Under Voltage Relay

Three phase voltage rely can see not connected phase as loss of phase situation  

RE: Two Phase Under Voltage Relay

Not if you connect one of the phases twice..

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