Local Breaker Backup (LBB) | Breaker Failure Relay (50BF)

Local Breaker Backup (LBB) or Breaker Failure Relay (50BF)
Protection Operate for the fault clearance of a system by tripping other circuit breakers when the related circuit breaker fail to operate.

[@petarsimic2303]

So far best relay protection channel on yt! Thank you for effort you put into videos Barani, We appreciate it!

[@baranitech1026]

Thank you

[@simonbenjamin7917]

I have really enjoyed the video. Especially the LBBP for 1&1/2 Breaker Scheme. it was on point

[@anbur9568]

❤extraordinary knowledge sharing..keep post videos busbar protection,differential,ref etc

[@baranitech1026]

Thank you, I will

[@mohammednaveedhs4058]

Sir finally you made this video thank you sir another request 3- phase transformer stability and 1-phase transformer stability. In traction sites we are using 1-phase transformer.plz make a video on this

[@baranitech1026]

Okay soon i will make for you

[@sivananthambalasubramanian1202]

Nice presentation Barani sir. Thanks

[@jamieroberts8902]

Lots of examples, very helpful! Thank you 🙏

[@baranitech1026]

welcome

[@gharikrishna2280]

While doing protection checks on down stream relay it's breaker is in already tripped condition any fault operated in the same relay in this scenario is LBB operation will occur in the up stream breaker

[@baranitech1026]

yes it will operated

[@alishafi9272]

Appreciate your efforts sir. Learned alot.

[@baranitech1026]

So nice of you and welcome

[@meghanasr3098]

Sir do the ABB relay protection testing videos

[@baranitech1026]

general Testing video

[@aeerdkptcl4017]

Excellent sir.
Please explain binary inputs
GOOSE signals

[@baranitech1026]

i will try to make for you

[@dittikatisatish4239]

Hi sir thak you for your valuable videos and im having one doubt in this video in 1and half breaker system you have explained if main breaker fais to trip but my doubt is what if a tie breaker fails to trip then what will be sequence of operation in lbb protection..?

[@baranitech1026]

it will trip both bus

[@dittikatisatish4239]

@@baranitech1026 ok sir thank you..

[@Yusup_oke]

Nice bro very clear, how about the sf6 2nd stage logic in GIS bro maybe you can create the video also.

[@baranitech1026]

okay bro soon i will create

[@PLAYWITHPHYSICS-s9l]

Very good nice explanation

[@baranitech1026]

Thanks and welcome

[@SunilSingh-uy2re]

In your video with dual busbar single breaker scheme both of the bus sections are connected via bus coupler. Bus coupler is in ON state but you said breaker of the particular bus section will trip !! How ?

[@baranitech1026]

please tell me at which timing of this video

[@sajivs486]

Thank you so much.

[@kannirajulu]

Thank u for sharing knowledge

[@baranitech1026]

most welcome

[@kannirajulu]

@@baranitech1026 bharani sir,am working on sel487B,can u help in lbb configuration, [e-mail]

[@baranitech1026]

@@kannirajulu chat.whatsapp.com/EwWBppukxNTIoDJAE6e1NU you can post your doubt over here . on sel i am not much familiar

[@mr.biplob3795]

Busbar stability how to injection Primary setup & secondary setup as well as how to check T protection,what is the arrangement for one and half scheme primary &secondary, please sir one tutorial we want from you side.

[@baranitech1026]

okay bro

[@vinoddas8773]

Kindly make a video for Pole slip protection of generator....

[@baranitech1026]

yes i will make for you.

[@himanshu2232]

Nice vedio sir.👍👍👍👍👍

[@baranitech1026]

thank you

[@sivananthambalasubramanian1202]

09.45 sir, why should the OG 1 send LBB initiation to remote end ss?

[@baranitech1026]

it will trip remote end breaker for that line.

[@sandeepramkumar7503]

Thanks sir

[@bikramdas9770]

Thanks

[@sameer81kulu]

breaker failure is on buscoupler cb in double bus scheme then which cbs it should trip

[@baranitech1026]

all cb

[@rohiths5987]

Sir please mention your email id I need to solve my doudts on Protection on 400 KV One and Half scheme and 220 KV Double main transfer

[@baranitech1026]

chat.whatsapp.com/EwWBppukxNTIoDJAE6e1NU

[@baranitech1026]

can clear your doudts over whatsapp group

[@AkashSingh-br4yp]

I am not satisfied this vedio
Itna ghuma rhe ho ek line ka ans he

[@baranitech1026]

sorry if i am not satisfied . i will try to make other better video thank you

[@pratibhaprajapati7984]

thanks

[@baranitech1026]

You're welcome!