Sir no problem in video. I want to know smthg more..... How is the connection of relay when we use REF for a line? and What is REF non directional stage 1 start or stage 2 start and stage 3 start
Today I read this scheme from the book of JB Gupta, I hardly understood the working principle, but after watching this video, it's crystal clear. Thank you
Ye video dekhkar aaj muze lag raha hai interview me agar muze pucha jaye aur me definitely iska ans kar pauga and mera impression bhi positive rahega..
Very clera and sound as well as informative, Thanks . Please make a detailed video on transform oil testing and action incase of oil contain danger gas, furan test analysis and action.
Great upload. You explained really well. Next topic: How to choose the CT ratio and C value (C100, C200 etc) so the CT doesn’t saturate during a fault?
नमस्कार सर् आप बहुत अच्छा से समझाते हैं और समझ में भी आता है सर् एक request थी आप से ड्राइंग कैसे read किया जाता है ओ भी एक part by part सर् समझाए आप की बहुत कृपा होगी हम सब पर
Sir apane bahot achha bataya hai.....I m also electrical engineer....but college me jitana nahi samjha usase kahi jyada ap ne achha smjhaya hai....thank you very much sir🙏🙏🙏 for your efforts....
Abhishekji, beautifully explained. Can you just add, what will be the scenario if the transformer winding is delta connected?How the CTs will be connected?
Sir...you are doing very great job for us in simple language to make us understand.. I hav bit confusion if fault occur outside then current will also come through stabling resistor in relay or will follow other path to NCT...kindly clear my doubt..🙏
Sir you have explained beautifully. Thanks for sparing time & making such informative video . I have few queries, request to address them . 1. Why this REF protection only use in transformer having capacity equivalent or more than 2.5 MVA? 2. REF protection Relay will be installed in primary side of transformer or secondary side ? Once again thank you very much for this video . 🙏🙏
1)Why nct is not getting saturated but phase CTs are getting saturated due to high fault current? 2) What is the zone of protection of lvref and hvref in a 33/11kv substation?
Very important for field engineers! Very well explained. One more point can be added like why in CT secondary current flows opposite concept of P1-P2 ~ S1-S2..so that if it gets reversed in wiring that fault can also be found.
Mere solar plant me 5mva TRAFO ka REF tripping relay operate hota hai jab outside area (substation) me earth fault hota hai.. restricted area k bahar k faul pe operate nahi hona chahiye na... Stabilizing resister work nahi kar raha kya? Please suggest more....
Video Dikhne mein agar problem ho rai ho to comment karke bataye.. Kya Video wapas banana chahiye??
No problem.. Ok hey.
please make on insta. overcurrent, tcs, lbb and autoreclouser
Sir jee Industries me cable Selection ke bare ma dijhaye..with current Dansity and sqmm and Amp. Or Cable try type and Selection
Sir no problem in video. I want to know smthg more.....
How is the connection of relay when we use REF for a line? and
What is REF non directional stage 1 start or stage 2 start and stage 3 start
No sir. Great.
Your explanation is awesome
Your are great sir i am from Pakistan .Even difficult things become easy with your way explaining.
Very well explained. Clearly understood function of stabilising resistance. Thanks!
One of the best vedio Abhishek Ji.
You are amazing tutor such a nicely explained. Thank you so much.
It's is very good Subject sir that you clearlified in very easy way.It support us for in troubleshooting in problem
Today I read this scheme from the book of JB Gupta, I hardly understood the working principle, but after watching this video, it's crystal clear. Thank you
Most welcome...
Perfectly getting clear concept sir.....
Bahut badhiya bhaai..mai b bahut pareshan tha..Books me thoda sa topic de rakha tha but ye to bahut bada aur important topic ha...
Sir,You are explained very well
Ye video dekhkar aaj muze lag raha hai interview me agar muze pucha jaye aur me definitely iska ans kar pauga and mera impression bhi positive rahega..
Very clera and sound as well as informative, Thanks . Please make a detailed video on transform oil testing and action incase of oil contain danger gas, furan test analysis and action.
Great upload. You explained really well. Next topic: How to choose the CT ratio and C value (C100, C200 etc) so the CT doesn’t saturate during a fault?
Video banate hai..
Good Explanation and I understand it very well. Good way of teaching. Love from Pakistan.
Awasome brother I learnt clearly from this video video is very helpfull thanks for your video
Really Explained very well
Thankyou
bohat he Alaaa! Allah pak apko mazeed kameabi dy ameen
Shukriya..
Wonderful explanation good knowledge
Very good explanation, and one more request that pls classify internal and external faults and describe it's protections.
Dear sir , I'm a big fan of your teaching style ....
Thank you Satish..
in such busy schedule sir you have attented my doubt after cmnt love u sirrrrrrr
🙏🙏
Precisely explained 👌👌
Very informative video ... 👌🙏
Deeply explained 👍👍
Thank you Sir I understand all your explanation. Very nice video Sir
Extremely superb sir
Great knowledge sir really apriciate
Thank you so much. Your explanation is so much great.
Most welcome...
नमस्कार सर् आप बहुत अच्छा से समझाते हैं और समझ में भी आता है
सर् एक request थी आप से ड्राइंग कैसे read किया जाता है ओ भी एक part by part सर् समझाए आप की बहुत कृपा होगी हम सब पर
Vikash,
Drawing wali Playlist dekho.
Super sir excellent concept given very understandable thanks for making this video sir🙏
Thanks for such an amazing explanation Sir
Greatly explained
kya gazab explain kiya hai🙌🙌🙌
Great explained sir...
Sir apane bahot achha bataya hai.....I m also electrical engineer....but college me jitana nahi samjha usase kahi jyada ap ne achha smjhaya hai....thank you very much sir🙏🙏🙏 for your efforts....
Most welcome..
Excellent explanation sir.thank you
Such a good explanation ❤
Very Nice Explain And More Knowledgebal vedio Sir 👍👍
that's an absolute masterpiece
Gr8 sir 👍👍🙏, aaj clear ho gaya REF, differential protection ka bi video bunaya
Super video as usual
Abhishekji, beautifully explained. Can you just add, what will be the scenario if the transformer winding is delta connected?How the CTs will be connected?
Full package for electrical.,. excellent sir
Thank you...
thanks sir very well explained.
Bahut badhiya!!!
Explained very well sir. 😊
Guru ji❤
Very good. Thanks 🙏🙏🙏🙏🙏🙏
Sir...you are doing very great job for us in simple language to make us understand.. I hav bit confusion if fault occur outside then current will also come through stabling resistor in relay or will follow other path to NCT...kindly clear my doubt..🙏
Great explanation sir...thank you so much
Good explanation, great bro
Verywell explained.....
Sir beautifully explained. Could u pls tell us about high impedance and low impedance REF
Without any fault occurence, what is the direction of secondary current in the line CT
Sir you have explained beautifully. Thanks for sparing time & making such informative video . I have few queries, request to address them .
1. Why this REF protection only use in transformer having capacity equivalent or more than 2.5 MVA?
2. REF protection Relay will be installed in primary side of transformer or secondary side ?
Once again thank you very much for this video . 🙏🙏
Ref is primary side also primery and secondary side
Nicely explained.
Superb sir... Ecxelent
Thankx buht kuch sekha ap say sir
Most welcome.. 👍
1)Why nct is not getting saturated but phase CTs are getting saturated due to high fault current?
2) What is the zone of protection of lvref and hvref in a 33/11kv substation?
Due to NGR
Well explained. Thank you
Excellent 👍
Bahut ache se samjhaya sir
Amazing Explanation 🎉
Superb info
Very well explained sir
Excellent
Very nice explained
Sir aapki samjhane ka yahi tarika chahta tha ❤🙏
Very important for field engineers! Very well explained. One more point can be added like why in CT secondary current flows opposite concept of P1-P2 ~ S1-S2..so that if it gets reversed in wiring that fault can also be found.
reverse the polarity then will be a fault creat automatically
Amazing video, your videos are very helpful in my internship ❤️❤️❤️
Thank you...
@@electricalwithabhishekjoshi sir please help .mere ko ek book chahiye jisme sab kuchh hoga please bataye
Kaunse topic pe book chahiye?
@@electricalwithabhishekjoshi testing commissioning and relay
Thank you 🙏
Too good sir,
Mere solar plant me 5mva TRAFO ka REF tripping relay operate hota hai jab outside area (substation) me earth fault hota hai.. restricted area k bahar k faul pe operate nahi hona chahiye na... Stabilizing resister work nahi kar raha kya?
Please suggest more....
Nicely Explain..👌👌
Great, Thanks
Sirji.....Earthing and neutral ka RYB k sath sequence kya hota h.... Transmission nd distribution line m
Great explanation
so simple teaching sir I could easily understand
Iske jagah pe efr use kr sakte hain kya with 4 ct
Great.
well explained sir 👍👍👍👍👍
Very Good Explain..very nicely ..I have one queation Line CT and Neutral CT SHOULD BE ONE POINT EARTH OR SEPERATE EARTH..
superb explanation
What about surge resistor in parallel with REF relay
thanks dear , you have explained well
Most welcome...
Very nicely explained
very good
VERY INTERESTING VIDEO
Thank you sir 😊 for answer my comment question thank you very much 👍🏿🙏
Thank you
What will happen if neutral CTs polarity got interchanged ?
Very clearly understood sir
Bahut achhe se samajh me aaya sir 🙏🙏
Thank you Bhuwneshwar..
Thanks sir from Pakistan
Most welcome..
Very helpful for understanding sir
Very Good Explanation ..pls let us know the CT Sceondary Grounding will se sepearately line ct secondary and neutral CTSeconday seperate Grounding..
In normal working condition what is the current flow direction in current transformer
Well explained bro
Very well explained
Very nice