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.
@yubrajchimoriya27613 жыл бұрын
..
@muhammadashhad21462 жыл бұрын
Relay setting is always kept higher then the normal Spill Current which is due to Differnce in CT Ratios and Lead Leangths.
@pramodpgc2 жыл бұрын
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.
@sm-ph8uf Жыл бұрын
thanks
@pawankumar-nb5ce Жыл бұрын
@Umakant yeh doubt mujhe bhi pareshan kar Rahi hai. Agar kuch clear ho to please reply
@manoharborvadkar21073 жыл бұрын
Thanks sir for consideration of my request and well explained of transformer differential protection, Now I am waiting for transformer testing videos
@PrinceKumar-cy5ll3 жыл бұрын
+1
@electricalwithabhishekjoshi3 жыл бұрын
Most welcome Manohar...
@ganeshmalakar143 жыл бұрын
Sir, please make video for Transformer Testing
@omprakashsingh-cl4jl3 жыл бұрын
Plz. vector surge relay per video banaye..
@electricalwithabhishekjoshi3 жыл бұрын
I have made a video on this topic. Watch Playlist switchgear and protection.
@omprakashsingh-cl4jl3 жыл бұрын
@@electricalwithabhishekjoshi ok Abhishek ji
@victorhigh78962 жыл бұрын
Very well explained, thank you so much dear friend 😊🙏🙏👌👌👌
@basicelectrical36553 жыл бұрын
Veer ji Jrck load kya hota h
@gulfamhasmi10 ай бұрын
superb Yaar super se bhi upper very nice conclusion
@tarakparai40589 ай бұрын
Thanks 🙏🙏🙏🙏👍👍👍👍 Hamara side me tap chang time same problem hua thaa.
@hemantshukla23143 жыл бұрын
Settings kaise krte hai differential relay ki
@AnilAutomation3 жыл бұрын
#anilautomationhindi 👌
@jaleshwarsingh20323 жыл бұрын
Sir plz make video on directional relay
@soumitra9433 жыл бұрын
Sir please make a video on different types of power grid connection
@k.p.prajapati30633 жыл бұрын
Ir, Isc, Im, means kya hai jo realy timer and contactor leka hota hai
@haldharchouhan0073 жыл бұрын
Superb sir
@ajaysinhzala96243 жыл бұрын
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.
@haldharchouhan0073 жыл бұрын
Please explain why use opposite ct use
@pavankumar-ey3bw3 жыл бұрын
33kv manual trip ckt what is the uv blocking.....? Please give me replay
@learnelectrical70313 жыл бұрын
Sir plz make a video on phase shift ,phase angle ,phase squence and sooo on plz
@navalkishore98453 жыл бұрын
Are Restraining coil & tripping coil inbuilt in advance numerical relay or relay itself manage all function? Kindly explain sir
@digvijaymohite63 Жыл бұрын
nice explanation of Diffrential protection of tramsformar
@shilwantsingh893 жыл бұрын
Doubt clear .thanks
@electricalwithabhishekjoshi3 жыл бұрын
Most welcome Shilwant...
@arunjoshi20893 жыл бұрын
Well explained.
@AnilAutomation3 жыл бұрын
#anilautomationhindi 👍
@rajendrapaliwal2392 жыл бұрын
Sir Please make vidios on transformer testing ,IR values
@sgtechnicalm13223 жыл бұрын
sir, why smps posetive terminal is ground? (plese make a video).
@AnilAutomation3 жыл бұрын
#anilautomationhindi 👌
@AnilAutomation3 жыл бұрын
#anilautomationhindi 👌
@Rajeshkumar-ds3sb3 жыл бұрын
Sir kya ye connection sabi relay par ho sakte h
@aashishaikh48673 жыл бұрын
Nicely explained sir, Thank You sir
@ganeshmalakar143 жыл бұрын
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??
@mohibbullahniaz53493 жыл бұрын
Bcz CT connection also changed..
@dinabandhukhuntia90772 жыл бұрын
Aux ct lagate hai for balancing current. Also you should know about spill currently
@suvendusahoo7905 Жыл бұрын
Sir transformer ko hum static divice bolte hai to phir tap changer Kay hai ? Please sir explained me.
@sofiaofficial98663 жыл бұрын
Super sir
@vinodshah51202 жыл бұрын
Superb explanation sir
@princechauhan68725 ай бұрын
ek question ye h ki jb hmra transformer ka kaam hi yhi hai HT to LT convert yani jb volatge dono side alg alg hoti hai toh current b dono side alg alg hoga toh isme diffrence toh rhega hi fir dono side k bich diffrence toh rhega toh ye work kaise krega
@digambarkhokalepatil19453 жыл бұрын
Sir, Please Make video on 2 nd ,3rd ,4th harmonic filter bank in SVC.
@ateeqkhan09 Жыл бұрын
according to the transformation ratio current will be different on of windings in power transformer ..how do you select CT for it?
@surendrakverma5552 жыл бұрын
Very good. Thanks 🙏🙏🙏🙏
@srijansingh98342 жыл бұрын
Sir jb dono side star configuration ho to ct ko kaise connect kre
@dars_hit4917 Жыл бұрын
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 ???
@arbinkafley91683 жыл бұрын
Sir. If there is short circuit in one feeder panel is there chances of getting trip of other panel in a company.
@mallikarjunreddy50633 жыл бұрын
Please explain about phase shift concept
@AnilAutomation3 жыл бұрын
#anilautomationhindi 👌
@SitaramSamota-n6j Жыл бұрын
sir, Electrical saving per bhi video banvo
@satyaranjanbarik57022 жыл бұрын
Please make a video on 2 phase lighting transformers
@muhammadkhalid7129 Жыл бұрын
Sir. Do u have any video on Percent Differential Relay???
@farazkhan71763 жыл бұрын
Now CT star mea hoti han or compensation relay apne software mea karti ha
@gamingworldofAbdullah_8787 Жыл бұрын
Where this restating coil installed. In transformer or in relay. Plz confirm.
@ayushpandey71872 жыл бұрын
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
@surekhagaikwad51952 жыл бұрын
Hello Brother kindly use blank white paper and bold pen/ dark pen. Thankyou so much..
@electricalwithabhishekjoshi2 жыл бұрын
Okay 👍
@neerajjoshi86012 жыл бұрын
Very good teaching aptitude sir thankyou
@bhaveshprajapati53773 жыл бұрын
Sir Transformer me normal condition me HV LV ka current equal hota to nahi hai. To bhi relay kaise work karta hai....?
@awadithya872 жыл бұрын
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
@arvindkumarrajput89093 жыл бұрын
Up to how much KVA differential relay used in transformer
@electricaljagat71593 жыл бұрын
From 5MVA to upside...
@dharampalsingh-sr3hs2 жыл бұрын
Distance protection relay fault ka distance ko kasea sense krti h
@mitubarik33613 жыл бұрын
Well explained sir
@shreemadbhagvadgeeta96712 жыл бұрын
Really very useful video.
@kavitasahu53302 жыл бұрын
Thank you sir
@himanshutiwari32193 жыл бұрын
Very good explanation
@AnilAutomation3 жыл бұрын
#anilautomationhindi 🙏
@parbatambaliya4762 жыл бұрын
Transformer and its LV AND HV SIDE USE OF PANEL AND USE OF RELAY AND OTHER PROTECTION
@gajadharkushwaha8862 жыл бұрын
Sir 11kv/690v converter transformers ke bare bataye
@sinodchauhan24642 жыл бұрын
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
@anmolpawar31492 жыл бұрын
Fabulous and fantastic sir 🙏🙏
@omkarkannaujiya90377 ай бұрын
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
@amp_0012 жыл бұрын
what is the ratings of transformer in your example
@arpitdhiman40212 жыл бұрын
Sir please aap , trip circuit supervision relay & restricted earth fault relay per video bnaye.
@electricalwithabhishekjoshi2 жыл бұрын
Arpit, restricted earth fault relay pe video banaya hai. Drawing ke sath explain kiya hai
@ajitroy19903 жыл бұрын
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?
@shaikkhaja28212 жыл бұрын
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.
@mrs.mukesh19387 ай бұрын
Sir genrator differential protection me circulating current kya h
@akshaypatel99973 жыл бұрын
Sir, My question is how to select CT ratio for primary and secondary side for differential relay..
@electricalwithabhishekjoshi3 жыл бұрын
Watch my video on how to select CT.
@shrikantsathe3713 жыл бұрын
First consider full load current of HV winding of transformer. Keeping 20% as spare current value, next rounded off CT ratio to be selected. Say 80 ampere is current of transformer then select 100 ampere as primary current of the CT. Secondary CT current to be selected as per input current of the differential protection relay. Suppose relay input current as per manufacturer of the relay is 1 ampere, then CT ratio for HV Side CT would be 100 / 1. Now finalise LV side CT ratio as per corresponding current of HV and LV winding of the transformer. Suppose for example LV transformer current is 800 ampere, then select 1000 ampere as primary CT current of LV side. Now, we have to decide secondary current of this CT. First understand connections of HV & LV winding of the transformer. If both are either Star or Delta connected i.e. HV winding & LV winding both are Star connected (Star - Star) then 1000/1 ratio for LV winding is suitable. Considering connections of differential relay wires which are called pilot wires; during normal operation of the transformer from 0 load to full load, current shall be equal from both the CT's at any point of loading is the fundamental requirement. Moreover, in case of differential protection CT's, the class of CT's shall be class PS, where CT magnetising current saturation is studied and knee point voltage is taken into consideration. (If someone is using Microprocessor based differential protection relay, then class of CT requirement is derived from the relay input requirement as per catalogue of the relay. sathe1963@gmail.com Thanks!
@mayurramdham30512 жыл бұрын
Best ever explained
@parbatambaliya4762 жыл бұрын
Please sir ONE VIDEO Difference between REF AND DIFFERCIAL PROTECTION
@dhetolangthasa169 Жыл бұрын
Awesome 👍👍👍
@Ali__tahir Жыл бұрын
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
@mudasirshahid38395 ай бұрын
Please clear You use 100/1 CT When 1000 amp flow then CT , Saturate , ct output only 1 amp
@shahbazrehman72112 жыл бұрын
App ki new video kab aye ge
@mrityunjayshrivastav983212 күн бұрын
Sir pilot Wires kya Hota Hai??
@indronildey77532 жыл бұрын
How the restraining coil differentiate between high inrush current and fault current.
@itsbarki36566 ай бұрын
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
@sudarsangiri48873 жыл бұрын
Very good explanation, thank you.
@VikasKumar-dl8wk7 ай бұрын
Sir HT me CT ratio kaise choose kare
@laxmanchrist795 Жыл бұрын
super explanation \....
@prasadprs75012 жыл бұрын
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?
@06.amitkumar173 жыл бұрын
Sir transformer me incoming current and outgoing current same kaise ho Sakta hai ..
@sumantsharma78152 жыл бұрын
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
@davetejas37283 жыл бұрын
Please make video of oltc control diagram
@krishnaRajput-mf4dq3 жыл бұрын
Sir please make a vedio how to measured transformer winding temperature
@civildevil65312 жыл бұрын
Very nicely explained
@sandeepsandy7093 жыл бұрын
Sir speed control of a motor both AC & DC
@AnilAutomation3 жыл бұрын
#anilautomationhindi 👍
@MuhammadIsmail-t7q11 ай бұрын
Good Explanation
@sanjeetgupta39972 жыл бұрын
No word sir 🙏🙏🙏
@electricalwithabhishekjoshi2 жыл бұрын
Thank you Sangeet...
@ayushpandey71872 жыл бұрын
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
@khan_tanzeem05213 жыл бұрын
Just awesome 🤩
@electricalwithabhishekjoshi3 жыл бұрын
Thank you Tanzeem...
@shrivastavakirasoi83753 жыл бұрын
nicely explained
@vidyasagaryadav38812 жыл бұрын
Sir please explain transformer stability test..
@navalkishore98453 жыл бұрын
Sir make a video on distance protection relay in our line protection.