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amitabha0107
Power-User

Join Date: Feb 2011
Location: Shimurali, Westbengal,India
Posts: 119

Distance Protection DUTT and PUTT

08/07/2011 11:38 AM

In distance protection(21) we use direct under reach transfer trip(DUTT) and permissive under reach transfer trip(PUTT).

I want to know what are the logics/ signal that initiate DUTT? like busbar protection, over voltage protection, if I am right.
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PeterT
Guru

Join Date: May 2010
Location: Liverpool, NY
Posts: 961
Good Answers: 131
#1

Re: Distance Protection DUTT and PUTT

08/08/2011 1:01 PM

You seem to be asking a lot of questions related to transmission line protective relaying in recent posts. It is clear that you have no understanding of the concepts necessary to do this job. This forum is not the place to become educated in them. You need some formal training - search out a university course in advanced protective relaying or transmission line protection.

For some general information, you can download GE's free "The Art & Science of Protective Relaying" at the following web site:

http://www.gedigitalenergy.com/multilin/notes/artsci/index.htm

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Anonymous Poster #1
#2

Re: Distance Protection DUTT and PUTT

08/16/2011 7:14 AM

The application of distance relays to the protection of three terminal .... Zone 1 distancefunctions are required for the DUTT and PUTT schemes and may be
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