Generator Differential Protection - Percentage/Bias Setting

[@ashokkishore4492]

If there is any word that is more than Thanks i would like to say it ,but as far i only know thanks , this is very helpful to us no other channel explains alternator protection concepts this clearly keep continuing sir and make videos on HT motor, ACB breaker ,VCB breaker ,SF6 breaker protection scheme and 132kv switch yard protection, power and Distribution Transformers protection scheme.
This is very useful channel for Electrical Engineers with lots of valuable industrial knowledge we can't find any where 🙏🙏🙏🙏🙏👌👌👌👌🙏🙏🙏👌👌
Keep continuing 👌👌👌👌

[@ElectricalTalks]

Thanks from bottom of my heart for such beautiful words 🙏

[@surendrakverma555]

Thanks Sir

[@JunsiGaming]

Sir please ek video generator differential protection ki calculation kaise karte hai us par banao

[@MySpace-vo6ok]

excellent video for an no electrical person like me

[@subhransupradhan2153]

The way you explain these topic is really amazing.
Can you make video on NGR/NGT in alternator

[@ElectricalTalks]

Thanks for the suggestion 👍

[@sankhajitpaul3562]

Thank you sir for the very good explanation ❤️

[@ElectricalTalks]

So nice of you

[@AsifAnsari-uw7vm]

Very informative video.

[@malluvastrad5179]

Sir The way you explain very well Sir.
So please explain All Protections of Gen's and TRF's other also Sir, Hope sir you will Give information us for other protections also,

[@sangeetajundhare2495]

Nice explanation Sir

[@sanjayakumarpatel775]

Nice video Sir,
Please prepare Generator Protection Relay testing video.

[@yagnikpansuriya1267]

Mast explanation!!!

[@ElectricalTalks]

Thanks brother 👍

[@rukmagoud]

Generator is grounded through high impedance and the fault current is restricted to just 10A to save the stator core. Differential doesn't act for such small currents. These faults are taken care by stator earth fault relay.

[@ElectricalTalks]

Absolutely correct.

[@connectingdots...3098]

Sir please make a video on calculation part also. how to calculate settings value with numerical example and selection of ct ratio.

[@ElectricalTalks]

Okay....

[@AnswerAtlast]

Wonderful sir..
Nicely and thoroughly explained. I am working in 500MW thermal plant as a control room incharge. Today @08:04Hrs our Generator tripped on 87G protection. (Differential)
After primary findings it was observed a sudden dip of 4KA in R phase current (Generator was delivering 12KA at that time)
That dip of 4KA was only for 145milli Seconds.
I want to ask you, can't we give time delay in settings so that it should not operate if fault resets in 100mS

[@mousumisingh6539]

Great 👍

[@jhon5769]

Thank you

[@MrFahim-dg3fh]

Nice tutorial. Please tell me as per international rules what should be the differential current trip setpoint with respect to nominal current of alternator on controller?

[@arunkumaryadav7518]

Nice explanation

[@ElectricalTalks]

Thanks

[@prabhatsingh5377]

Excellent

[@ElectricalTalks]

Thank you so much 😀

[@GTROCKS1231]

Great 👍👍👍👍

[@ElectricalTalks]

Thanks

[@GTROCKS1231]

U made it understandable to a mechanical background person like me... Thanks to you..... 😀🎉

[@engrbaqar4823]

Thank you sir 😘

[@ElectricalTalks]

Most welcome 😀

[@laxmankumar-iw8lq]

i am Zero knowledge in stock market, like what is stock market, can i eligible for this class........?

[@amitkalyan5435]

Good

[@ElectricalTalks]

Thanks

[@PappuKumar-jv7ck]

generator को ड्राई आउट पर लगाते समय हमें किस किस चीज का ध्यान रखना hai. Sir please make this topic video .

[@parvezalam3843]

Sr T/F charging k uppar v ek video dijiye na Plz
Aagar hum T/F charging krte hai to kya wo v inrush current leta hai?

[@ElectricalTalks]

Do you mean v/f?

[@parvezalam3843]

Nai sir..
Mera mtlb ye hai k jb hum T/F pr load connect krte hai to kya wo v motar ki tarreh hi inrush current pik krta hai
Ya ki wo apne rating pr hi work krta hai?

[@akashsenta3601]

Respected Sir,
My relay Differential relay DTH31 (Electromagnetic relay)
Relay name plate relay operating current 1A
But i take Bias testing DC current inject 2.5 A and varying AC current.
Why not relay burn out for 2.5 A current.
Please explain briefly.
Thank you

[@ElectricalTalks]

Rating for two coils - operating & bias coil may be different.

[@user-zw5pr1iu5e]

Sir please explain transformer protection also sir

[@ElectricalTalks]

ok

[@vaibhava108]

Sir, percentage bias ki value kya hogi Gen. And Transformer ke case me

[@ShailendraKumar-ic9lk]

Sir ct settings 10 % .. generator current..rakh sakte h kya sir

[@user-iq4mu1is5d]

Where connect two ct for differential relay if the 4wire out from the generator

[@ElectricalTalks]

Good observation 😊
Actually in practice, you will find total 6/9 terminals out of generator. Neutral point is made outside the generator casing.
In inter turn protection, 9 terminals concept will be discussed.

[@user-iq4mu1is5d]

@@ElectricalTalks thats mean in generator we connect ct to inner protaction and out of protaction where connection

[@sidharthkumar4943]

Gen all protection alarm and trip settings?

[@MrPaul49414]

No, stator earth wil not operate differential protection. Bcoz cT is not connected on star point for differential prtn..

[@MrPaul49414]

Thanks for the explanation sir

[@ShailendraKumar-ic9lk]

Ps class kya h sir