Lec 13 Line to Line Fault | Unsymmetrical Fault

[@rahulbera40]

and one more thing sir ....u are doing just ossume........due to this kind of channel many poor student can learn manything

[@mohdasad1188]

Sir . Your sincerity & selfless heart is truely matching the simplicity of the tone of ur voice .

[@adeelurrahmankhan1801]

sir your approach is out standing

[@MATHEMATICSBYNITianHimanshu]

Thanku So Much Sir😍

[@surendrakverma555]

Excellent lecture Sir. Thanks 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@aamirhussain6103]

Sir plz made whole board visible to take screenshots...

[@yogendramalav9658]

whenever grnd fault never comes into the picture zero sequence current never flow..

[@anmoltirkey4898]

Fabulous teaching style and having attitude...

[@adityapahalvan6484]

Gazab and unique experience

[@shivatejairivinti]

MVA and Thevenin method are very nicely taught sir. Thanks a lot for your sincere efforts. It's time for me to put in sincere efforts now.

[@hira_sir]

Love u sir.... Like u heartly specially yr teaching technique

[@amitgupta-ko9hw]

Sir.. SCMVA is different for LG, LL & LLG but CB ratting is fixed practically. How ??

[@noorazam2096]

Sandaar jabardast jindaabad👌👌👌👌

[@VibeFlowBeats]

Thank you sir for perfect method 🙏👍

[@rajibsarkar471]

sir little bit correction... in method 3 22:43 u take Ia1 pu but that have to be convert to actual then have to find scmva..

[@rajatpareek9525]

Sir ek suggestion hai.. Plz question poora padha karoo 🙏like in previous video. ♥ u sir..

[@humanchakras]

#Query LL fault unsymmetrical fault hai....bt Scmva calculate krne mai by, First method...after fault aap balanced phasor maan rhe hain kyu?

[@dipakpoddar7753]

Thats what fortesque theroem is all about to convert a unsymmetrical phasor into the symmetrical one...

[@ravindranaththakur4174]

Sir you are great. I wishes that God will fúllfill all your desires. You are parents for me. I get inspired by you sir. Sir crash course Ka video delete mat Karna.

[@vectorrehan9340]

thanks

[@pritammondal6855]

Sir for calculating short circuit MVA why we are considering Phase a ? ..As fault occurs between phase b and c .

[@RoyalIndians-h6b]

thakyou sir ji

[@competitioncurrentaffairsw2128]

Nice Lecture.

[@IrfanMujawar]

#Query Sir yahaan pe LL fault current LG se jyada aa raha hai lekin depending on type of grounding LG fault current sabse jada aata hai no agar generator terminal pe fault hua to. Please clarify the doubt sir.

[@mayankojha2333]

Elaborate ur doubt.. didnt get u.

[@bhavikchavda300]

A 50 MVA, 11KV, 3-phase synchronous generator was subjected to 3- phase fault and line to line fault. A generator neutral is solidly grounded. Find out positive sequence and negative sequence reactance of synchronous generator if 3-phase fault is 1780A and line to line fault current is 2590A. How to solve this sir??

[@hr3536]

really helpful sir thank you so much very nice concept

[@arvindkumarrawat2366]

THANKS sir ji

[@rahulbera40]

sir if check this cmmnt pls send me a reply... sir according to pu formula, actual value =pu value *base value but whenever u r writing any actual value of current u r deviding base mva by (root 3 * Vl)...pls sir tell me the reason

[@surendrasmartzz6582]

S= root 3 v L i L Use apparent power formula

[@shashankkumar6512]

Thank you sir from the inner of my heart.

[@jitendrasinghbhadoriya153]

Yes same answer by new genique method(MVA method)

[@eletro-hostex8622]

Jabardast sirji

[@gazanfargulzar4193]

Sir please scmva ka thoda query mai elaboration doo fully.. Maherbani hogi..... Nd we really enjoying lecture.... Thanks sir.. Allah jazaye khair dai

[@Amitkumar-EE]

Fantabulous sirrr

[@GeniqueEducationTeam]

Keep studying.. god bless u ❤️

[@patelbhavesh2491]

Query:- Respected sir, In equivalent circuit of LL fault why we not consider emf of phase c (Ec) ?

[@dipakpoddar7753]

Ea1 is +ve sequence component Ec is per phase voltage ..

[@soniyakumari2870]

Yaa same doubt, why we have not considered Ec1 i.e. positive sequence component of C- phase. Please reply ASAP.

[@soniyakumari2870]

QUERY: Same doubt sir, Why we have not considered +ve, -ve impedance and +ve sequence emf of phase C. Please reaply. If anyone else knows, kindly do reaply immediately.

[@___satyam___4553]

@@soniyakumari2870 hey it is not like that the seq of each phase is independent of other phase. As if we calculate the seq voltage then we need to get the value of each phases. So this qs is meaningless.

[@SI_vishal_parmar]

sir Ia1 (pu) nikalne k liye Ea1 (pu) ko total impedance (pu) se q divide kiya.... only Z1 (pu) se divide krte tab bhi to answer ana chahiye

[@raghavendrachauhan5019]

Sir can we can use MVA method ?

[@dhirajthakur1159]

mast mast mast....

[@abhaypathak8220]

osm

[@adeelurrahmankhan1801]

sir thanks a lot

[@GagandeepKaur-kd5sk]

Good after noon Sir my query is when we calculate SCMVA in line to ground fault why Vb and Vc are taken symmetrical ?as when fault occurs parameters become unbalance

[@GeniqueEducationTeam]

Vb and Vc will be unsymmetrical but they will not provide current to the shorted path as it is open circuit..ok

[@AmanKumar-uj8sx]

Thank you sir

[@hardikrathod8085]

#query sab samajme aa gaya...bt confusion in notation.... hear fault accure in B and C phase...and we assume phase A as reference and convert all parameter according phase A using by shift operator.... My question is if Fault accrue in A to C then what about reference... will take B as a reference..??? pl clear this...its soo confusing..

[@hoytvolker3]

Any possiblity of adding English captions ?

[@niteshsaini919]

In equivalent network why we connect positive nad negative sequence network in parallel but not in series ?

[@soumyabratabanerjee9996]

MVA method we bhi same answer as ra hai 400 MVA I think its a best method

[@rajatpareek9525]

Sir before fault system no load p haii.. Esa kyu. Plz some explaination diya karo 🙏🙏😄 ♥

[@manojmishra6202]

yes sir MVA se bhi 400mva aa rha h

[@rahulsarma1639]

Maza a gaya sirji..

[@GeniqueEducationTeam]

badhiya..ab enjoy karo..aur share karte rehna..all the best.

[@rahulsarma1639]

Sir posted a question in the gmail of inertia in pu. Please help. Gate 2005

[@therosuperhit]

Sir equivalent diagram of LL fault me a phase ka +ve and -ve sequence impedance and +ve sequence ka emf kyu liye jbki fault to b aur c phase me ho rha hai??

[@hardikrathod8085]

comment me #Query likho.... easily point out hoga and sir ko filter karne me easy rahega...

[@rahuldebnath8778]

B aur C phase even saab phase ka Positive negetive and zero sequence components hota hai. Yaha zero sequence component 0 hai. Baaki 2 component toh hai. Fortescue theorem

[@mr.a4842]

#query For unbalanced fault with path for zero sequence current, at the point of fault negative seq. Voltage in minimum and zero seq. Voltage is max , why please explain

[@IrfanMujawar]

#Query Sir what will be change if fault is there on phase a and b or a and c?

[@umeshsingh-du3pk]

If this lecture doesn't help you, no book will be able to help you.

[@Sinqobile_199]

Please lecture in English....

[@anshsri9729]

mere liye bhagwan..

[@abdullahbamsaq5698]

Why don’t u speak in English sir ? There a lot of people who want to learn

[@shrinivaskanki882]

At 6:50 galti lag raha he. Vb ,Vc in terms of sequence voltages .

[@shrinivaskanki882]

sorry... baad me correct kiya aap ne. Thanks

[@soniyakumari2870]

QUERY: Sir my doubt is that Why we have not considered +ve, -ve sequence reactance and +ve sequence emf of phase C. As fault is occuring in two phases (i.e. L-L, in B and C phase) hence parameters of both the phases should be consider. kindly reaply. If anyone else knows, kindly do reaply ASAP. Thank you!

[@umeshsingh-du3pk]

soniya kumari ma'am in the beginning, Sir wrote Ib=If=-Ic. I think if we consider phase C also it'll be same, just the direction of current would be opposite, that's why sir only considered only phase be.

[@umeshsingh-du3pk]

soniya kumari since magnitude will be same, just direction will be opposite, one case is enough.

[@umeshsingh-du3pk]

soniya kumari and one more thing, Ib = -Ic so Eb and Ec will cancel each other, so only Ea will exist I guess. I'm not sure just telling you what I think. Happy learning

[@farheenJavidAli]

Actually in L-L fault the neutral is grounded and it contains only zero sequence component and hence we consider only zero sequence component and the remaining sequence networks becomes zero while neutral is grounded...

[@geeta_ka_VANI]

sir GRID FEEDER wala question please SCMVA method se please solve kr do .. i did ..but unable to find mistake where i did sirrr plaese

[@udaymehta8917]

MVA method se bhi ans 400MVA aa gya... SABSE BEST METHOD HAI MVA METHOD...

[@GeniqueEducationTeam]

badhiya..ab share karte raho..all the best.

[@mayankojha2333]

Mva se kaise aarha h? Z1+ zf impedence parallel mein hoga z2 ke toh 100 mva base pr nikalege mva aur fir parallel capacitor add karege toh ni aara

[@udaymehta8917]

@@mayankojha2333 MAYANK ,AAP LL FAULT KA EQUIVALENT CKT DIAGRAM DEKHO. Ea1 source AND Z1 + Z2+ ZF REACTANCE.AAP Z2 KO CONSIDER KARNA BHUL GYE HO. TRY IT.

[@mayankojha2333]

@@udaymehta8917 consider toh kara h... Z1, zf dono Ea ke series mein h... Aur Z2 parallel mein.... after taking out individual MVA, i added them just like in capacitors... But i didnt got the answer. Can you tell me which one is series and which one is parallel?

[@udaymehta8917]

@@mayankojha2333 Z1, Z2 , Z0 teeno series me hai.

[@anirbankoley6599]

root of (3j) nahi aa raha h sir calculator mein

[@balachandarjeyalatha868]

Teach in English so that can understand by tamilan also

[@nibeditaghosh6035]

please reply me

[@akshayyadav7850]

ghanta assan

[@GauravGupta-pb8mk]

Thank you sir