3-Ph Transformer Differential Protection through numerical relays

[@fabianm.2982]

You are great Sir, wish I had you as my electrical protection lecturer during my varsity years. You effortlessly make concepts which used to crack my brain look easy. Im humbled!!

[@shihabahmedalkatrani3050]

Very nice 👍 and excellent work....go head

[@jitendragujarathi1282]

Really great understanding

[@shyammohan4868]

Thanks sir. Rarely found explanation for CT connections -Thumb rule .

[@Kali9030]

your videos are very informative and useful, i am waiting for your next video on electromagnetic differential relays. thanks for your time and effort, really appreciate it.

[@erisherm.8451]

Well done .Excellent presentation.

[@muhammadsajjad1723]

Explained very well

[@anwarullakhayoom7863]

Excellent , very smooth presentation. thanks.

[@monudubey2651]

Very very nice .we understood very much. thanks

[@juniornijiharan8472]

Very good explanation and thank lot for your effort.

[@ImranKhan-nu6xw]

Good job u did ,the 2nd vedio u referenced is not available,plz share link of that

[@sharathmsg4436]

Ur great boss.. Thank u so much . Very usefull..

[@milanpatel9939]

Detailed explanation 👏

[@unnikrishnanvelu2538]

Very good video . thanks

[@thamilarasanraju134]

Great superb ji.

[@manisikhadatta2410]

Excellent explanation!

[@mrfasil6060]

very good and informative vedio . would you please make a lecture on distance relays .and where i found all vedios uploaded on your channel.

[@ATOMSENERGY]

Bro I have doubt,in CT secondary connection you are showing mirror image in that connection differential relay connected between R and star point and Delta R phase,in star connection current will flow bcoz of there 2 point available but in Delta only one connection are showing,how current will flow in that one connection,plz give solution

[@AH-uj3bc]

When will you be putting up the diff protection using electromechanical relays?

[@carlosavalos622]

excellent video!

[@Prashantbaurai]

Sir u gave the excellent example... Im 100% satisfied.... Can u explain it for electromechanical differential relay.... Please

[@riteshpaul5968]

Bro is the value of Id which is 0.15 amp. in this case is fed by us in the numerical relays,plz reply bro,I m confussed for that,does we have to feed this pick up value of Id in the numerical relays,plz reply bro

[@jamest.5001]

I have a question. that I hope you will answer for me. does a 3-phase transformer see 180 or 150hz or does it not work that way? the reason I ask. is if you rewound the core as a single phase. would it be optimised for more in the 150-180 hz frequency ? doesn't the laminations need to be thinner on 3-phase transformers? thanks . I hope you can help me with this.

[@sjay2630]

question: trying to achieve +/- 5% of 230v. readings are L1 to L2= 247 L1 to Ground= 122 L2 to L3= 248 L2 to ground=214 L1 to L3= 247 L3 to Ground= 124 I was informed to use 2 buck and boost transformers 500SV43B 0.50kva, what is the wire make up with high leg?

[@عليالحارثي-ز8ظ]

Thanks keep good job

[@gunendragujarathi5704]

Excellent.......

[@brightstar6587]

Sir made some vdos regarding Relay coordination and fault calculation

[@rameshsrc4546]

Hi friend thanks for your nice work. I have a doubt, Why did you marking Y phase current value as i @(240) degree. ? phase angle difference between each phase is 120 degree. then R phase= I @(0) Y phase = I @ (120) B phase = I @ (240) Is it right or not??? But you are mentioned always Y phase is I @(240) ???

[@NasirKhan-ek3rt]

PLOT FOUR QUADRANT THEN DRAW THESE PHASES. AT 120 DEGREE IF YOU PLOT YELLOW PHASE THEN DURING ROTATION OF PHASES IT WILL BE ACB INSTEAD OF ABC. SO THATS WHY WE TAKE ANGLE FOR YELLOW 240 WHICH IS IN THIRD QUADRANT

[@manumanojpeddi3647]

Ramchandra Ramesh if you get answer please send me

[@manumanojpeddi3647]

Nasir Khan I didn’t understand,would you explain it clear with a figure

[@srinivasbommagani3724]

Nice video sir...can you explain setting consideration in first second slope, after minimum diffrential pick up

[@riteshpaul5968]

Is the pick up value of Id which is 0.15 amp. in this case is fed by us in the numerical relays,plz reply bro

[@riteshpaul5968]

Is the pick up value of Id which is 0.15 amp. in this case is fed by us in the numerical relays,plz reply bro

[@ian20662]

Can you kindly recommend a good manufacturer??

[@riteshpaul5968]

Does the numerical relays also have the NO,NC contacts like electromechanical relays????,plz reply sir

[@electricalengineerr9711]

Yes it has both no and nc contacts

[@varadharajanelectricalengi5954]

Awesome thanks

[@seenimohmaedimrankhan711]

sir , can u clarify the CT connection ?...while using the microprocessor based relays the CT connections is star, but without micro processor based relay it was different connections like one side delta and other side star?

[@nisargchoksi2548]

Sir Very Nice Video But i want to know how to test slope charct. of Differential relay

[@marudavanansomasundaram8094]

Wonderful Explanation.. Expecting clearly explained video of Restraining characterstics/bias and other inhibit function protn in detail for trafos..

[@riteshpaul5968]

Sir is the pick up value of Id is also have to fed by us in the numerical relays,plz reply sir

[@electricalengineerr9711]

Yes.......it depends on the rating of the transformer.

[@rakeshsingh-ed4ws]

VERY GOOD SIR

[@12345678sharad]

Polarity is missed, you should show it, rest assured it's a good explanation

[@sdineshkumar9086]

Really the video will be neat but in k2 formula you need to change that's no secondary side CT ratio its primary side CT RATIO divided by full load current

[@riteshpaul5968]

Bro does the pick up value of Id which is 0.15amp. in this case is feed by us in the numerical relays,plz reply bro

[@nandikhambholja7138]

what is difference bt transformer & generator to provide differential protection? phase angle & magnitude expect other difference ?

[@electricalengineerr9711]

Transformer has two winding, mostly one connected in star and the other connected in delta. when there is an unbalance in the load there will be flow of zero-sequence current in the lines of star connected side, but there will be no flow of 0 seq current in the lines of delta connected side, thus the differential relay might operate during unbalance conditions, in order to avoid it we use 0 sequence filtering in the star connected side. For generators there is no need to use 0 seq filter. we also use 2nd harmonic blocking in transformers to prevent unwanted tripping of differential relay during magnetizing inrush. for generators we don't need to use 2nd harmonic blocking.

[@johnyelengical]

Thankyou...

[@imconfus]

Why did you divide by the root of 3 at 17:45 isn't the transformer Y connected on that side?

[@anwarullakhayoom7863]

P=ROOT3 X V X I ; I= P/ROOT3 X V ; OK ; This a simple 3 phase power formula for 3 phase networks ,

[@vidyasagar1795]

Nice

[@divyakumari6282]

Sir induction motor protection ka video upload kariye plz

[@riteshpaul5968]

For the INDUCTION MOTORS protection,we have to use the DOL starter,if the INDUCTION MOTOR is up to 5 hp,& for the protection of INDUCTION MOTORS more than 5 hp we have to use the star Delta starter or soft starter,WHILE THE BEST WAY IS TO USE A VFD(VARIABLE FREQUENCY DRIVE),THIS VFD NOT ONLY PROTECTS THE INDUCTION MOTORS,BUT ALSO WE CAN CHANGE THE SPEED OF INDUCTION MOTORS,BY CHANGING THE FREQUENCY IN THE VFD.😊😊

[@rjrnjn87]

Very informative but small figure

[@rakeshsingh-ed4ws]

PLS SHARE YOUR DETAIL

[@Actioncomedyclip]

In hindi pls.

[@nothingaboutme8747]

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