In case of distribution transformer, current in the primary (high voltage) winding is always less than the current in the secondary winding. CT raio of primary & secondary winding always differ. In your explanation, you have shown same CT ratio for both windings. Besides, even in healthy condition also current in primary CT shall always be less than the current in secondary CT. Then the difference current will flow through the relay coil & shall trip the transformer. This is what I have predicted. Please throw more light on this matter to make me understand function of this relay correctly.
In conventional relay there is provision of matching CT in both side. And now a days in numerical relay no need of matching CT, there can be feed setting.
Hai sir I have a dought in restraining coil. When fault occurs, fault current surpasses through restraining coil as u said. Can I assume, restraining coil opposes sudden change in current for few sec then after it allows that current to flow in relay operating coil
Good afternoon sir, Sir please describe my doubtful question, i am stand centre of Transmission line distance how will be identify the direction of the power generation substation and any incoming substation?
bro i have a dout transforer output means primary voltage is diffrent from secondary voltage but diffrential relay works on diffrence of magnitude so please explain if u know?
Tq so much sir given good information. Sir I have doubt ht motor my differential relay lagate hy our us ke saat our ak relay bi lagaya jaata a donu my kya difference hy baatya na sir please.
Agar normal condition meh sirf ct se current flow hoga to kab transformer meh current jayega. Aur kiu normal meh primary and secondary meh cureent same ata hain? Voltage level to different ayega to fir cureent same kiu
Sir Transformer ki primary aur Secondary me normal conditions me Voltage Different hone par Current bhi different hogi to operating Coil me Zero Current kaise flow hogi??
Sir agar hamara connection Y-Y or ∆ - Y hoga to hamara operating & restarting coil hai usme koi change aayega kya ??? Or circuit diagram me koi change ho sakta hai kya ???
fault current has very high magnitude , restraining coil may opppose , but its magnitude is very , some current pass to operating coil, and differential relay operate
u said restraining coil will stop inrash current or change in voltage/current due tap change ……..wont it stop the difference of current from CTs as well ? explain
Hello sir As you said for CT secondary the current flow is opposite to the CT primary current... please make any video what's the logic behind it or reply in text . Hoping you will respond
sir Transfomer normal operation me bhi to primary and secondary me current different hota hi power constant rakhne ke lie.....tab operating coil me current kyu ni flow hota
Hello Abhishek sir, i was asked in interview that how you will calculate amount of oil used in transformer if you have 100mva transformer and primary line voltage. and there is no name plate.. can you share how to answer this question
sir normal transformer operation me bhi to primary and secondary me current different hota hi power ko constant rakhne ke lie.....tab differential relay ki operating coil me current kyu ni flow hota
Sir my question delta side star ct and star side delta ct connection kiya gya hai resion phase shifting and tap changing ke karan current flow hota usko avid karne ke liye Sir uske liye to resitring coil lga hai to usko avid kar sakta hai. Please reply
Superb video. And your knowledge is great. This video is best explanation in TH-cam
aapka batane ka tarika bilkul hi lajwab hai,thank you very much
Best video for understanding differential relay... thank you Abhishek ji
Sir aaap bahot achhe se explain krte ho ......
Ur style i like bcoz crystal clear idea given by u
Amazing Experience watching your well described video
Very well explained, thank you so much dear friend 😊🙏🙏👌👌👌
Nicely explained sir, Thank You sir
Very good explanation, thank you.
superb Yaar super se bhi upper very nice conclusion
Very informative video sir
Really very useful video.
Fabulous and fantastic sir 🙏🙏
Very good teaching aptitude sir thankyou
Best ever explained
Superb explanation sir
Well explained sir
Very nicely explained
Sir IR test in transform kese karte hai...it's value?
Very good explanation
Doubt clear .thanks
Most welcome Shilwant...
Superb sir
Thanks sir for consideration of my request and well explained of transformer differential protection, Now I am waiting for transformer testing videos
+1
Most welcome Manohar...
Sir, please make video for Transformer Testing
Settings kaise krte hai differential relay ki
#anilautomationhindi
👌
Just awesome 🤩
Thank you Tanzeem...
super explanation \....
Nice explanation
Good Explanation
Very good. Thanks 🙏🙏🙏🙏
Well explained.
#anilautomationhindi
👍
nicely explained
Awesome 👍👍👍
Thank you sir
Thank you Sir 🙏
In case of distribution transformer, current in the primary (high voltage) winding is always less than the current in the secondary winding. CT raio of primary & secondary winding always differ. In your explanation, you have shown same CT ratio for both windings. Besides, even in healthy condition also current in primary CT shall always be less than the current in secondary CT. Then the difference current will flow through the relay coil & shall trip the transformer. This is what I have predicted. Please throw more light on this matter to make me understand function of this relay correctly.
..
Relay setting is always kept higher then the normal Spill Current which is due to Differnce in CT Ratios and Lead Leangths.
In conventional relay there is provision of matching CT in both side. And now a days in numerical relay no need of matching CT, there can be feed setting.
thanks
@Umakant yeh doubt mujhe bhi pareshan kar Rahi hai. Agar kuch clear ho to please reply
Thanks 🙏🙏🙏🙏👍👍👍👍 Hamara side me tap chang time same problem hua thaa.
nice explanation of Diffrential protection of tramsformar
Well explained
Are Restraining coil & tripping coil inbuilt in advance numerical relay or relay itself manage all function? Kindly explain sir
Agor delta delta and star star xmer ho toh CT ka kaya connection hoga???? Plz reply
Ir, Isc, Im, means kya hai jo realy timer and contactor leka hota hai
Pls. describe "Distance Protn.relay" & different b/w switched/Non switched distance relay.
Nicley explained
Super sir
according to the transformation ratio current will be different on of windings in power transformer ..how do you select CT for it?
Thanks bro
No word sir 🙏🙏🙏
Thank you Sangeet...
Hai sir I have a dought in restraining coil.
When fault occurs, fault current surpasses through restraining coil as u said.
Can I assume, restraining coil opposes sudden change in current for few sec then after it allows that current to flow in relay operating coil
Very nice
Nice video
I love you sir
Thnku
Sir.
If there is short circuit in one feeder panel is there chances of getting trip of other panel in a company.
Sir plz make video on directional relay
In normal condition both side of transformer same magnitude of current is not flowing because HT side and LT side current are not same in transformer.
Please explain why use opposite ct use
Good afternoon sir,
Sir please describe my doubtful question, i am stand centre of Transmission line distance how will be identify the direction of the power generation substation and any incoming substation?
sir, why smps posetive terminal is ground? (plese make a video).
#anilautomationhindi
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#anilautomationhindi
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Please explain about phase shift concept
#anilautomationhindi
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Sir please make a video on different types of power grid connection
Sir plz make a video on phase shift ,phase angle ,phase squence and sooo on plz
Veer ji Jrck load kya hota h
👍👍
33kv manual trip ckt what is the uv blocking.....? Please give me replay
Sir,
Please Make video on 2 nd ,3rd ,4th harmonic filter bank in SVC.
Please clear
You use 100/1 CT
When 1000 amp flow then CT , Saturate , ct output only 1 amp
bro i have a dout transforer output means primary voltage is diffrent from secondary voltage but diffrential relay works on diffrence of magnitude so please explain if u know?
❤️
Tq so much sir given good information. Sir I have doubt ht motor my differential relay lagate hy our us ke saat our ak relay bi lagaya jaata a donu my kya difference hy baatya na sir please.
How many CT are being used in Differential relay protection of transformer?
Sir speed control of a motor both AC & DC
#anilautomationhindi 👍
Agar normal condition meh sirf ct se current flow hoga to kab transformer meh current jayega. Aur kiu normal meh primary and secondary meh cureent same ata hain? Voltage level to different ayega to fir cureent same kiu
Sir Transformer ki primary aur Secondary me normal conditions me Voltage Different hone par Current bhi different hogi to operating Coil me Zero Current kaise flow hogi??
Bcz CT connection also changed..
Aux ct lagate hai for balancing current.
Also you should know about spill currently
Sir agar hamara connection Y-Y or ∆ - Y hoga to hamara operating & restarting coil hai usme koi change aayega kya ???
Or circuit diagram me koi change ho sakta hai kya ???
😊😊👍👍👍
Sir Please make vidios on transformer testing ,IR values
How the restraining coil differentiate between high inrush current and fault current.
fault current has very high magnitude , restraining coil may opppose , but its magnitude is very , some current pass to operating coil, and differential relay operate
Dear sir
If fault is happen outside the transformer I.e CT than what happen ....
Due to CT saturate relay is operated or Not?
Sir make a video on distance protection relay in our line protection.
Please make a video on 2 phase lighting transformers
u said restraining coil will stop inrash current or change in voltage/current due tap change ……..wont it stop the difference of current from CTs as well ? explain
Hello sir
As you said for CT secondary the current flow is opposite to the CT primary current... please make any video what's the logic behind it or reply in text .
Hoping you will respond
Sir apne video me kaha CT ratio same rakhna hai it means secondary same rahega par ye to jaruri nahi hai na ki primary wala v same rahe?
Sir kya ye connection sabi relay par ho sakte h
sir Transfomer normal operation me bhi to primary and secondary me current different hota hi power constant rakhne ke lie.....tab operating coil me current kyu ni flow hota
What happens when i use 300/1 CT in primary side and 800/5 CT in secondary side in 15 MVA X'MER then how diffrntial protection works. Pls. ans
Up to how much KVA differential relay used in transformer
From 5MVA to upside...
Sir my question please clearify me two generator running in parallel one of the generator KW fluctuating what may be the reason
Sir transformer ko hum static divice bolte hai to phir tap changer Kay hai ?
Please sir explained me.
Sir please make a vedio how to measured transformer winding temperature
what is the ratings of transformer in your example
In normal scenarios also current flows from both CTs. Why then differential relays don't act? Pls answer the query.
it cancel out each other
Where this restating coil installed. In transformer or in relay. Plz confirm.
Hello Abhishek sir, i was asked in interview that how you will calculate amount of oil used in transformer if you have 100mva transformer and primary line voltage. and there is no name plate.. can you share how to answer this question
Did you get the answer?
sir normal transformer operation me bhi to primary and secondary me current different hota hi power ko constant rakhne ke lie.....tab differential relay ki operating coil me current kyu ni flow hota
Sir my question delta side star ct and star side delta ct connection kiya gya hai resion phase shifting and tap changing ke karan current flow hota usko avid karne ke liye
Sir uske liye to resitring coil lga hai to usko avid kar sakta hai.
Please reply
Sir please explain transformer stability test..
Sir Transformer me normal condition me HV LV ka current equal hota to nahi hai.
To bhi relay kaise work karta hai....?
Sir, tap Changer kaha lagate hai...why? Kis Transformers me lagta hai?
Watch my video on tap changer
Hello Brother kindly use blank white paper and bold pen/ dark pen. Thankyou so much..
Okay 👍