×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Bus Bar Protection with Arc sensors

Bus Bar Protection with Arc sensors

Bus Bar Protection with Arc sensors

(OP)
Is bus bar protection (partial/full differential) not required if there is a protection by arc sensors in the cable, breaker and bus bar chambers?
Note: It is a M-T-M double ended switchgear; Bus tie normally closed along with IS-Limiter.

RE: Bus Bar Protection with Arc sensors

Not all faults are arcing faults.

RE: Bus Bar Protection with Arc sensors

Dear Mr NickParker (Electrical)(OP)20 Feb 23 17:00
"...Is bus bar protection (partial/full differential) not required if there is a protection by arc sensors in the cable, breaker and bus bar chambers? ..."

1. Bus bar protection (partial/full differential) IS required EVEN if there is a protection by arc sensors in the cable, breaker and bus bar chambers.
2. Bus bar differential protection works on current difference. The arc sensor works on the arc (light). They work on different principles and different purposes.
Che Kuan Yau (Singapore)

RE: Bus Bar Protection with Arc sensors

IS limiter will ensure the Tie is open rapidly in case of a fault exceeding the busbar rating. This way, the fault current is brought down to below busbar / breaker ratings.
Arc sensors act quickly to isolate the faulty bus in case of any arcing fault in the busbar zone.
Coupled with the above, suitable interlocks to prevent bolted faults such as closing of incomer with busbar earthed for maintenance etc. should suffice I believe.

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close