×
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

HV three-phase pole-mounted fault indicators

HV three-phase pole-mounted fault indicators

HV three-phase pole-mounted fault indicators

(OP)
Thread http://www.eng-tips.com/viewthread.cfm?qid=78415 mentions pole mounted fault indicators are common in Europe for 3 wire systems.  Could these be applicable to a 115kV system in the US?  We are in a low lightning area, so we do not use a guard wire.

Does anyone know what manufacturers to contact?

Thanks

RE: HV three-phase pole-mounted fault indicators

I haven't heard of using fault indicators on transmission systems.  Modern protection relays have fault locators built in which would do the job without hanging stuff on the lines.

RE: HV three-phase pole-mounted fault indicators

http://www.eosmfg.com./index-2.html

Relays can tell you distance to the fault, but if your lines branch you still might not know where to look.

RE: HV three-phase pole-mounted fault indicators

(OP)
Stevenal nailed it.  We have transmission lines where we maintain the ROW fairly well, but there are several lengthy taps to rural municipalities.  If we could identify when a fault was on a tap, the restoration time for everything else would be significantly improved.

RE: HV three-phase pole-mounted fault indicators


For overhead lines one technic is to use travel wave fault locator. It can be used on tranmission lines of any voltage. The signal is taken from the CT. Each fault occuring on the line will generate a pulse that will travel in both directions. Providing that a locator is installed at both ends they will trigger at different time. The time difference will give the distance to the fault.
The accuracy is much better that what can be obtained with protection relays.
Best regards

RE: HV three-phase pole-mounted fault indicators

I have seen such a product for distribution lines in a flyer name Utility Products Showcase. The subscription is free and it is a thin monthly magazine but if you want to read about nifty products it is a great resource. Their website is www.utilityproducts.com . They are oriented primarily around electrical utility products but every once in a while they showcase a water or natural gas application.

RE: HV three-phase pole-mounted fault indicators

(OP)
Thanks mc5w for the site.  I haven't found the product yet, but I have signed up for a subscription.

RE: HV three-phase pole-mounted fault indicators

I was just surfing on the net when I read your question. I donnot know too much how much we can tell about the manufacturers.
For distribution lines fault locator you can find the right products manufactured by Hathaway (now belonging to QUALITROL). There are two existing products, the TWS and the DSFL. The DSFL will be more appropriate for your apllication.
I am sure that you can find some supplier in the States
Regards

RE: HV three-phase pole-mounted fault indicators

I believe this is the same Schweitzer from SEL fame.

http://www.eosmfg.com/

RE: HV three-phase pole-mounted fault indicators

Close.  E.O.Schweitzer I is the 'S' of S&C.  E.O.Schweitzer II is eosmfg.  E.O.Schweitzer III is SEL.  E.O.Schweitzer IV is a mechanical engineer.

RE: HV three-phase pole-mounted fault indicators

I thought I provided that link already. I believe the company has been incorporated into SEL.

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