Hi Anmol, Please check the REF CT wiring from Transformer Marshalling Box to Relay end. If rain start and REF operated means ..There might be some moisture issue or loose connection of CT wiring. You may take shutdown of transformer and check Turret CT secondary box of transformer from where CF wiring is taken up to marshalling box for CT ckt paralling. Note:-But before doing anything, discuss with your senior and then take any action. This is my personal opinion and suggestions based upon my experiences.
@@anmolmaharana5770 No ! If other feeder is tripping due to rain means, there might be fault due to trees, punctured insulators and transient faults. But there is no relation between feeder tripping and REF. Concept & circuit is completely different. Yeah ! REF may trip due to inrush current during charging of transformer on no load.
Nithish kumar jee you explained regarding REF protection superbly,and i hope everyone can under stood very easyly. Thank you for in-depth explanation sir jee
Nithesh sir jee mera ku to bahut acha laga apka lecture. I understood very clearly. I think this vedio can understood every technician below the engineer level also. Thank you sir jee.
Sir, This type of practical course will help all Electrical Engineers. I am really keen to meet you personally as today your way of explanation has remembered me about my great college teacher also. Hats off to you sir.....
Thanks Gaurav !! For understanding well through my way of explanation. Mee too want to explain Practically with core theory and many electrical engineers are getting benefits. Such comments motivate me to find time out of my busy schedule to make & deliver great content to all.
sir really aap bahot achchhe se expalne karte hai chuki mai bahot logo ka video dekhta hu lekin kisi ko comment nahi karta pahli bar mai aap ko kar raha hu q ki aap bahot achchhe se samjhate hai
Thank you very much for a good lecture. Please do u have any lecture about NGR in generator? How connected with parallel generator and how does calculated resistance valu? Please give me link about its.
very true and related to the real eg. nice keep it up sirji..can you have any idea of cbct protection with 3 wire inside cbct and N wire outside cbct..and another all 4 wire inside cbct..so how D2EFR1 relay will work..please share your valuable knowledge ..
Sir transformer ki differential protection scheme pura ref wesa banaye sir please. Jitna protection hai sab banaiye. Ref pura samjh gaya sir 🙏thank you
Hi nithish your video is very useful, please advise me as we have stabilising resistor in series with relay and the settings we kept in very low value. When the fault happens how the resistor will allow small current to pass through to the relay. Actually the resistor would have its own resistance to restrict the current. Please advise
Thanks for your feedback ! Such comments really motivate me to make good things for all. I find very less time to make videos due to my job but even though I find time. If people's are getting benefits from my videos then I think so that my labour is successful.
You deserve it Sir. I am proud to be your youtuber student. Your video helps me to clear my concepts and to gain practical knowledge...You have a done great work for the nation and youths in improving their practical skills. You can easily achieve theoretical knowledge by books but for practical knowledge everyone needs a Tuitor like you...Jai Hind
Respected Sir My trasformer REF protection Neutral CT 5P15 and phase CT PS class At a time near fault REF protection is operated. Can different class CT use for fault feeding operated.
Nitesh sir grt video but pls try to upload 1 videos once 1 week and make a video on protection of circuit breaker and CT saturation in details and thank you very much for selecting a very useful topic
I am trying my best Aryaan. Due to busy schedule, I couldn't find time. But now I am striving hard to help more and more to young engineers. Thanks for suggestions!!
In one of our substation whenever the 66 kv voltage is on higher side may be greater than 70 kv and if power transformer after maintenance is switched On it trips with REF indication .Could you please explain the reason for same
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Video of Difference between High Impedance & Low Impedance REF.
th-cam.com/video/apT0mVCIQgk/w-d-xo.html
हिंदी में😊
Sir tell me how to calculate stabilizing register value
Sir in my gss 132/33kv trf 40mva is tripped on ref when heavy wind and rain occurs. I want to know the reason
Hi Anmol,
Please check the REF CT wiring from Transformer Marshalling Box to Relay end. If rain start and REF operated means ..There might be some moisture issue or loose connection of CT wiring.
You may take shutdown of transformer and check Turret CT secondary box of transformer from where CF wiring is taken up to marshalling box for CT ckt paralling.
Note:-But before doing anything, discuss with your senior and then take any action. This is my personal opinion and suggestions based upon my experiences.
@@NiteshKumarElectrical ok sir.. during rain condition other feeders tripped on O/C E/F. Is there any relation between these trips and ref?
@@anmolmaharana5770 No !
If other feeder is tripping due to rain means, there might be fault due to trees, punctured insulators and transient faults.
But there is no relation between feeder tripping and REF. Concept & circuit is completely different. Yeah ! REF may trip due to inrush current during charging of transformer on no load.
Ab tak hajaaro bndo ki vedios dekhi meine but you have a great quality of explain a subject
Thanks !!👍😊
Nithish kumar jee you explained regarding REF protection superbly,and i hope everyone can under stood very easyly.
Thank you for in-depth explanation sir jee
Nithesh kumar jee you are explained very clearly where the REF Relay will tripped ,wether restricted zone or out of the zone .
Thank you a lot.
Keep it sir..it very detailed video that I only found nd superb explanation. Very detailed and in depth. We are respectful for your hardwork😊.
Keep it up...sir....clearly understand sir....with good graph and depth of knowledge...hats off....sir...
VIDEO EXPLANATION WAS very good thanks please do continue to make more such kind of videos on different topics
Sir aapke jitna deeply or itne sahi dhang se kisi ko samjhate nahi dekha
Thank you very much sir, this video any one can understand ........like that u clearly explained.
Superb explaination bro...U r efforts are really appreciable and commendable..thanks a lot for uploading this video..
Nithesh sir jee mera ku to bahut acha laga apka lecture.
I understood very clearly.
I think this vedio can understood every technician below the engineer level also.
Thank you sir jee.
Thanks sir, for explaining the REF protection, specially thanks for Rs, VDR calculations.
Very nice explaination..easily understood...Thank you sir..
Sir your explanation very simple & good. We learnt easy way of REF protection in power transformer.
*Thanks a lot* 🙏🙏
Welcome Ji
Very well explained... please upload more such practical videos
U really doing a good job... appreciated
Fan ho gaya bhai aapke explanation bka
Thank you so much sir for knowledge full video.....
Very sharply explained sir I am understood so easily...thanks
Very well discussion. I have to know much more things to know from you
Brilliant sir ji...
Excellent Bro.. well explained.
Nitesh bhai आपने बहुत अच्छे से बताया है calculation... Keep it up..
धन्यवाद आसिफ भाई !!👍😊
Sir,
This type of practical course will help all Electrical Engineers.
I am really keen to meet you personally as today your way of explanation has remembered me about my great college teacher also.
Hats off to you sir.....
Thanks Gaurav !! For understanding well through my way of explanation. Mee too want to explain Practically with core theory and many electrical engineers are getting benefits. Such comments motivate me to find time out of my busy schedule to make & deliver great content to all.
Really Help Full for me
your teaching skill very Great... Thank you
Thanks. !👍
Excellent video on REF..Please also make a video on Transformer impedance, its importance and beneficial.
Thanks for best knowledge .
Very good description !
Bahut kuch sikha hai bhai very nice explanation
👌👌sir make video on every equipments installed in 400kv substation.
you are great sir i watch your every video i have learned a lot thanks sir
How the positions (primary) of the CTs to be arranged (P1 & P2) for both the line and neutral CTs?
sir really aap bahot achchhe se expalne karte hai chuki mai bahot logo ka video dekhta hu lekin kisi ko comment nahi karta pahli bar mai aap ko kar raha hu q ki aap bahot achchhe se samjhate hai
धन्यबाद भाई
Well done Very nice sir....
Excellent 👌
best wishes🎉
From Sweden
Very well explained..superb 👏
Well explained... Keep sharing your experiences
Thanks !👍
Nice video..after so many year you cleared my concept about REF.. request to make video for differential protection same also.
Great sir.I like ur video.I want to know about Differential & bias current in differential protection.
Thanks
Hi, I like your lecture. Thanks
good territorial thanks a lot sir
Perfect Mr. Nitesh
GREAT EXPLANATION THANKS A LOT
Tremendious sir.
Thank you very much for a good lecture. Please do u have any lecture about NGR in generator? How connected with parallel generator and how does calculated resistance valu? Please give me link about its.
Really good #Nitesh ji
Really good explanation 👍
Superb explanation.
Wonderful explanation 👍
Nice
Excellent sir 👌👌👌
Sir Mera job jbsepl me lga hai as a testing engineer transmission substation me kya testing hota hai my frasher huu
Nice explained !!
Bohot awla sir
very true and related to the real eg. nice keep it up sirji..can you have any idea of cbct protection with 3 wire inside cbct and N wire outside cbct..and another all 4 wire inside cbct..so how D2EFR1 relay will work..please share your valuable knowledge ..
The current flows in secondary of CT Opposite to primary due to faradays law which will oppose the change in EMF. Please include. Nicely explained.
Sir transformer ki differential protection scheme pura ref wesa banaye sir please. Jitna protection hai sab banaiye. Ref pura samjh gaya sir 🙏thank you
good explanation sir
make note on differential protection of single phase transformer.
Superb explanation sir
Very nice explanation sir thank u
You are so good sir more video
Very very nice sir keep it sir
Very informative video sir. Please make video on Insulation Monitering device & their setting.
Nice explain...
Really very very informative and well explained video Sirji
Thank You..!👍💐
Excellent way of teaching. .Learned a lot from your video thanks to a lot dear.
Thanks !😊💐💐
@@NiteshKumarElectrical
If possible please upload videos of relays testing for feeder protection, differcial protection, imedence protection, etc.
Very good video sir..
Very good explanation Sir..kindly make a video on power transformer benifit of star to star windings and other combination...deta to star
Excellent sir..
Best explanation bro
Great video sir....Thanks for your knowledge sharing
Hi nithish your video is very useful, please advise me as we have stabilising resistor in series with relay and the settings we kept in very low value. When the fault happens how the resistor will allow small current to pass through to the relay. Actually the resistor would have its own resistance to restrict the current. Please advise
The influence of good teacher can never be erased . Thanks a lot Sir. You are inspiration for many people..
Thanks for your feedback ! Such comments really motivate me to make good things for all. I find very less time to make videos due to my job but even though I find time. If people's are getting benefits from my videos then I think so that my labour is successful.
You deserve it Sir. I am proud to be your youtuber student. Your video helps me to clear my concepts and to gain practical knowledge...You have a done great work for the nation and youths in improving their practical skills. You can easily achieve theoretical knowledge by books but for practical knowledge everyone needs a Tuitor like you...Jai Hind
@@PANKAJKUMAR-kv2eh जय हिंद, जय भारत। !!👍
Nice...❤❤
Very very good explanation
Nice explanation brother
excellent sir, pls make vedio on generator protection relay
Very good Explanation .. Sir
Thanks Nirav !!👍😊
Nice explanation
Realy great
Super video sir.r u doing any video TNC switch? Pls inform me
Thank you very much sir,
Respected Sir
My trasformer REF protection
Neutral CT 5P15 and phase CT PS class
At a time near fault REF protection is operated.
Can different class CT use for fault feeding operated.
Thanks you so much sir
Genius💡
Thank you.. Need a video about why CT saturate? How to recover saturated ct? And what is knee point voltage?
Definitely, Video will be published. Wait for the time. Thanks
Nitesh sir grt video but pls try to upload 1 videos once 1 week and make a video on protection of circuit breaker and CT saturation in details and thank you very much for selecting a very useful topic
I am trying my best Aryaan. Due to busy schedule, I couldn't find time. But now I am striving hard to help more and more to young engineers. Thanks for suggestions!!
Keep it up sir thanks
many many thanks
Sir pls make video on how to communicate PLC and Drive with motor
In one of our substation whenever the 66 kv voltage is on higher side may be greater than 70 kv and if power transformer after maintenance is switched On it trips with REF indication .Could you please explain the reason for same
Very nice video
Kya Aap Dg NGR ke uper video bana sakte hai
Brilliant explanation...nitesh
Thanks !!😊👍
Dear Nitesh Can you will made a video on centralized busbar protection vs a decentralized busbar protection system
Thanks sir
Very good explain and easy to do
Thanks Kundan Babu 😊😊😊👍
Brilliant sir,pls make vedio on Wiring of Numerical relay for generator protection
Sir one more video SEF protection
Very good explanation. Appreciate your job sir. Thanks
Thanks for your feedback !👍
Nitesh Kumar there were some video of schematics diagram in your channel. Could you help me to find that videos?
Hi ! That video is removed die to some reason. Soon o will upload a good lecture on this topic. Thanks.
Nitesh Kumar
Thanks I will wait
Nitesh Kumar
I will appreciate it
What are the repurcusions of not grounding neutral of Hv side of PTR in star star configuration ptr. As it is tripping line with neutral grounding .
Super sir......