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
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?
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
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.
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....
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.
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 . 🙏🙏
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
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?
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?
Jab resistriced zone ke andar fault hota hai, tab bhi current I2 lowest resistance path kyun nahi karta? Kya tab stabilizing resistance series mein nahi hota hai?
@@electricalwithabhishekjoshi Thanks for your quick response Sir Your explanation is very impressive Please make a video on Alternator testing like PD Test Elcid test Tan delta test And on Complete protection of Alternator...
sir ap ki videos best hy.. but es video mai samaj ni araha k fault kesay ground say ho kar ja raha hy neutral mai. or CT mai secondary current kaha say araha hy
Sir. I would like to know the ceiling fan rotates in anticlock wise direction. And blades are skewed in such a way that air comes downward. If it make direction clockwise blade will be made skewed opposite of anticlockwise . Is it work. Why you make direction only in anticlock why not clockwise. But tables fans were in clock wise. Please explain sir. I am awaiting
Sir ji In case of high currents of external faults, only phase CT is getting saturated, not Neutral CT. Why so? And in case of internal earth faults, why neutral ct is not getting saturated, tgough the cirrent intensity lies similar to case of external faults... Please help sir ji
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..🙏
Mera ek question hai ki Books me likha ki differential relay ko jab transformer (delta star) k protection me lagate h to CT delta side star me aur star side delta me connect hota h..but actually Maine power transformer (delta star) me dekha h ki star side CT ko bhi star connected kar rakha h...aisa kyun karte h? Aur kon sahi h books ya practically.
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!
It's is very good Subject sir that you clearlified in very easy way.It support us for in troubleshooting in problem
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..
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...
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
Sir,You are explained very well
in such busy schedule sir you have attented my doubt after cmnt love u sirrrrrrr
🙏🙏
You are amazing tutor such a nicely explained. Thank you so much.
Good Explanation and I understand it very well. Good way of teaching. Love from Pakistan.
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..
Thank you so much. Your explanation is so much great.
Most welcome...
Thankx buht kuch sekha ap say sir
Most welcome.. 👍
Dear sir , I'm a big fan of your teaching style ....
Thank you Satish..
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..
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...
bohat he Alaaa! Allah pak apko mazeed kameabi dy ameen
Shukriya..
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.
Awasome brother I learnt clearly from this video video is very helpfull thanks for your video
Great explanation sir...thank you so much
Thanks sir from Pakistan
Most welcome..
Explained very well sir. 😊
Super sir excellent concept given very understandable thanks for making this video sir🙏
so simple teaching sir I could easily understand
Thank you Sir I understand all your explanation. Very nice video Sir
Gr8 sir 👍👍🙏, aaj clear ho gaya REF, differential protection ka bi video bunaya
Very Nice Explain And More Knowledgebal vedio Sir 👍👍
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
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.
Very Nice, and Breif explanation..Thanks
Most welcome Sajid..
Very helpful for understanding sir
Full package for electrical.,. excellent sir
Thank you...
Well explained. Thank you
Perfectly getting clear concept sir.....
Amazing Explanation 🎉
Wonderful explanation good knowledge
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
Sir aapki samjhane ka yahi tarika chahta tha ❤🙏
One of the best vedio Abhishek Ji.
Without any fault occurence, what is the direction of secondary current in the line CT
Very well explained
Superb sir... Ecxelent
Thanks for such an amazing explanation Sir
thanks dear , you have explained well
Most welcome...
kya gazab explain kiya hai🙌🙌🙌
Super video as usual
Verywell explained.....
Bahut ache se samjhaya sir
Guru ji❤
Really Explained very well
Thankyou
Very good explain
Excellent lucture Sir very good
Thank you...
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
Bahut badhiya!!!
Very good explanation, and one more request that pls classify internal and external faults and describe it's protections.
Bahut achhe se samajh me aaya sir 🙏🙏
Thank you Bhuwneshwar..
Sir beautifully explained. Could u pls tell us about high impedance and low impedance REF
Precisely explained 👌👌
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?
AMAZING....
PLEASE MAKE VIDEO ON CT SATURATION........
Very Good Explain..very nicely ..I have one queation Line CT and Neutral CT SHOULD BE ONE POINT EARTH OR SEPERATE EARTH..
Thank you very much sir
Very informative video ... 👌🙏
VERY INTERESTING VIDEO
Very good explanation
Thank you sir 😊 for answer my comment question thank you very much 👍🏿🙏
Well explained bro
you earned a subscriber sir
Great explanation
Great knowledge sir really apriciate
Excellent explanation sir.thank you
Sir nice explanation. Dear sir i think stabilizing resistance will be in opposite side of the relay.
Thank you
Jab resistriced zone ke andar fault hota hai, tab bhi current I2 lowest resistance path kyun nahi karta? Kya tab stabilizing resistance series mein nahi hota hai?
yes same question arised in my mind
Like you sir.thanks
Superb explanation
Thank you 🙏
Sir please explain the difference between motor protection and transformer protection
Hi Abhishek Ji
Plz make a video on Back Up Impedance protection of Alternator
Okay Yogendra..
@@electricalwithabhishekjoshi Thanks for your quick response Sir
Your explanation is very impressive
Please make a video on Alternator testing like
PD Test
Elcid test
Tan delta test
And on
Complete protection of Alternator...
Well explained
Excellent 👍
sir ap ki videos best hy.. but es video mai samaj ni araha k fault kesay ground say ho kar ja raha hy neutral mai. or CT mai secondary current kaha say araha hy
Too good sir,
Sir. I would like to know the ceiling fan rotates in anticlock wise direction. And blades are skewed in such a way that air comes downward. If it make direction clockwise blade will be made skewed opposite of anticlockwise . Is it work. Why you make direction only in anticlock why not clockwise. But tables fans were in clock wise. Please explain sir. I am awaiting
Very Good Explanation ..pls let us know the CT Sceondary Grounding will se sepearately line ct secondary and neutral CTSeconday seperate Grounding..
Sir ji
In case of high currents of external faults, only phase CT is getting saturated, not Neutral CT. Why so?
And in case of internal earth faults, why neutral ct is not getting saturated, tgough the cirrent intensity lies similar to case of external faults...
Please help sir ji
Saturation of CT is a rare event bcoz we use PS class CT.
that's an absolute masterpiece
Thank you sir🙏
Thank you for your good explanation, can you make video on differential protection scheme and undervoltage protection in Capacitor breaker?
Okay Manohar...
@@electricalwithabhishekjoshi what protection we use for single phase power transformwler
Power transformer is 3ph..
@@electricalwithabhishekjoshi i am asking is thos ref is also meant for single hase transformer
Bhut khub sir
Such a good explanation ❤
thanks sir very well explained.
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..🙏
Mera ek question hai ki
Books me likha ki differential relay ko jab transformer (delta star) k protection me lagate h to CT delta side star me aur star side delta me connect hota h..but actually Maine power transformer (delta star) me dekha h ki star side CT ko bhi star connected kar rakha h...aisa kyun karte h? Aur kon sahi h books ya practically.
Great, Thanks
Good explanation, great bro
Sir excellent video....if possible plzz make a video on RMU
Superb info
Tank you ❤