Excellent explanation of relays, the most important protection devices
@chintanvaria2238
5 жыл бұрын
Excellent explanation. Very clear and to the point. 1st video I have ever watched for such clear explanation about relay coordination on KZitem. Thank you. Keep making videos like this. 👍
@electricaltechnologyandind5335
5 жыл бұрын
Watch the second part for earth fault..
@rajnigupta7940
5 жыл бұрын
Sir hindi me bnao plz
@hassanmohammady9827
Жыл бұрын
It was really helpful and precise. Thanks a lot
@amitagrawal7383
3 жыл бұрын
Excellent brother. Good work. Thanks.
@selvammurugaiah2074
3 жыл бұрын
Very informative.Good way of explanation.👍👏
@sohrabalmajose4082
11 ай бұрын
thank you very much on your video
@fatjr.6287
4 жыл бұрын
Thank you for this, waiting for differential protection discussion from you sir.
@soulofcinder2351
2 жыл бұрын
amazing work
@shrutikaushik8086
4 жыл бұрын
Superb explanation , thanks a lot sir , please make more and more technical videos like this , it helps a lot
@shashankshrivastava7442
4 жыл бұрын
Where do u work shruti
@lovemybrothers727
2 ай бұрын
Great effort friend
@papakaaccountmummykaphone571
6 ай бұрын
Sir,Pl make video on different IEC Characteristic and relay coordination using them
@BiswajitGhosh-gy1sc
Жыл бұрын
Please make a video of Battery sizing calculation by IEEE method.....
@Saharjunaid87
4 жыл бұрын
Amazing video
@vineshvinod4603
4 жыл бұрын
Good class....need class for machines
@rajeshparmar6944
11 ай бұрын
Sir thx.one small query @about not clear if dot represents inrush current in tht case LV curve shown below dot is means tht LV ACB or relay operating lower than inrush or inrushblocking is used pl.clarify. Regards.
@prashanthgaitonde3451
2 жыл бұрын
best video on youtube
@manmohandhir9117
Жыл бұрын
Setting of 50 hv1 should be higher than secondary short ckt. reflecting on the primary. Setting at lower level will affect coordination
@md.nazmussadat3263
4 жыл бұрын
Great initiative. Please Continue 👌👌👌
@Moon3pell
2 жыл бұрын
Very good presentation. But the question is why 51(HV2) does not have any instantaneous element 50(HV2)? and only 50(HV1) has instantaneous?
@g.r.akashprbhagar9927
5 ай бұрын
Bro which software are you using for explaining this ?
@adelino19701
4 жыл бұрын
My question is why in setting of 51(HV2) the short circuit fault current is considered?. I understand that ansi code 51 is for phase time overcurrent and ansi code 50 is instantaneous overcurrent. Therefore such short circuit fault current should be considered in setiing of 50 (HV1) and not 51(HV2)
@vineshvinod4603
4 жыл бұрын
Great
@rezamagham4495
Жыл бұрын
Perfect
@jayantkumardas1987
3 жыл бұрын
Thank you so much
@jameslee7004
3 жыл бұрын
Thank for your video. In the primary side, pickup current = 1.3x FLA, but secondary side, pickup current = 1.2 x FLA.. Is there any reason with two different value?
@durangi3716
5 жыл бұрын
Thank you very much!
@Vishal0106-m4p
4 жыл бұрын
Is this co-ordination good for numerical relays, since they have inrush protection in them
@pemalhaden9268
3 жыл бұрын
Please can you show us how to do baseline data calculation for over current relay coordination in transmission line using software digsilent.
@97542729
Жыл бұрын
What are difference relay cordnetion between 400/200/132/33 KV Substation to 33/11kv substation earth fault over current Numerical relay cordnetion please suggest me
@khan_tanzeem0521
4 жыл бұрын
Excellent explanation..how can I calculate relay 67 / 67N and 32 if my load is 6MW can you please explain....I am looking for manual calculation without using software...voltage 4.16kV..
@shihabahmedalkatrani3050
5 жыл бұрын
Thank you very much
@syedhajamuyinudeensaiyadya2960
3 жыл бұрын
👍👍👍
@allthingsinonemedia3579
2 жыл бұрын
Sir, would you gave me more information parallel transformer protection coordination in double bus-bar and also about protecting only selected transformer from the parallel one. Thanks for willingness
@gustavomarcelo7250
Жыл бұрын
Sir. What if the system is supplied by 2 parallel Tx?
@jameslee7004
3 жыл бұрын
Can you please show same topic using ETAP for next video if possible?
@sathaendi5224
3 жыл бұрын
Hai can you explain about Synchronoscop...
@Little_paaw
4 жыл бұрын
Sir can you please make the video of how digital relay like schinder abb work? I have seen many time there is using logic gate how they help for working the relay?
@parthapratimnayak5791
3 жыл бұрын
Lt 3phase motor safety overload realy setting combination of thermal relay and electronics relay
@prabhaamjmurali8379
4 жыл бұрын
Thanks for the video. Very clear explanation. Can you make video for directional over current with 2 sources??
@nishananda9838
4 жыл бұрын
Thank you for vdo.. I hv one question..How to select transformer withstand capacity?
@ShaileshKumarchetty
4 жыл бұрын
As IEC 60076 (Standard for Transformer) withstand time is 2 sec for through fault.
@electricaltechnologyandind5335
4 жыл бұрын
A trafo shall be capable to withstand for two second with one end short circuited and rated voltage applied at the other end
@ShaileshKumarchetty
4 жыл бұрын
@@electricaltechnologyandind5335 good job, I liked your video. Quality content !
@anwarhussainansari13
3 жыл бұрын
Sir which book u follow ? Is this overcurrent protection scheme ?
@adityatiwari8044
4 жыл бұрын
Sir I have an etap software but the basic problem is that in case of differential protection or in case of relay coordination it does not have an option of PS class CT please provide suggestions for this
@parthapratimnayak5791
3 жыл бұрын
Sir pl a video for ht industrial meter showing 02 nos kvar reading in secure premier e3m051 .pl clarify two reading parameter
@shashankkumar7770
4 жыл бұрын
Thanku sir..
@shamirdebnath7407
4 жыл бұрын
Good explanation but i have a question. when 2.5 MVA transfo switched on inrush current will flow. as 50(HV1) consider inrush, this will allow it. but 51( HV1) has lower limit of pick up current. Does this allow inrush current to flow?
@electricaltechnologyandind5335
4 жыл бұрын
51 will pickup but won't trip because inrush will be decreasing in nature. So the relay operating time will increase. And before tripping the inrush will be ended
@anwarhussainansari13
3 жыл бұрын
Phase fault is same as Overcurrent ?
@aliamoor1541
5 жыл бұрын
thank you sir : the equipements of electrical power system are transformer , medium voltage cable , bus bar and motor electric so we have different zones of protection in our electrical system and we must be provided by relays according to type of défaut electric my question is how to choose type of relay (50/51) and its calculations
@electricaltechnologyandind5335
5 жыл бұрын
calculation of 50 and 51 is already there.. you can watch it
@aliamoor1541
5 жыл бұрын
Thanks a lot sir when we use IDMT relay or instantaneous relay or both in different zone of electrical system
@kiagengreksapati
4 жыл бұрын
I offer to addmit translate or english subtitle on this video, that will be very helping.
@pcselvam
4 жыл бұрын
Very nice explanation sir......what about unbalance current in one phase... current circulate line CT? Trip?
@electricaltechnologyandind5335
4 жыл бұрын
If there is negetive sequence then you have to give elnegetive sequence relay, if earth fault then earth fault relay will trip
@rengaramanujan
5 жыл бұрын
Could u please clarify the difference between 51G and 64R and please explain if the relay actuated which breaker I.e either hv to be trip or LV to be tripped
@electricaltechnologyandind5335
5 жыл бұрын
hv to be tripped. 51g is idmt over Current relay, where as 64 is Differential relay
@ats3389
5 жыл бұрын
Sir,A minor mistake is there in full load current calculation .. the values are correct but the formula is given like this Power/√3 /voltage....It should be like this Power/√3*voltage
@electricaltechnologyandind5335
5 жыл бұрын
you are also wrong.... it is power/(√3*voltage). i hope you have understood the difference, and why the values have been correct....
@ats3389
5 жыл бұрын
@@electricaltechnologyandind5335 yes sir i am also wrong. sorry
@Infiniteknowledgenikhilrathod
3 жыл бұрын
Which book due you referenced?
@Nivupedia
4 жыл бұрын
Superb illustration, can you make video on Fault current calculation?
@electricaltechnologyandind5335
4 жыл бұрын
I will make. I am out of my home town. So dont have the set up. Hopefully from October end such videos will come
@Nivupedia
4 жыл бұрын
@@electricaltechnologyandind5335 Great 👍
@nduduzozondi8953
4 жыл бұрын
Thank you for this content. Can you please make a video on Mini substation, Kiosk and electrification
@imanrezaei8767
4 жыл бұрын
Thanks alot. How can i coordination o/c relays when 2 motors exist on LV busbar
@electricaltechnologyandind5335
4 жыл бұрын
Motors are instantaneous or 0.05 second delayed. With breaker operating time it will be around 0.11 sec. Now co ordinate accordingly
@imanrezaei8767
4 жыл бұрын
Can i have your email sir due to sent network to you.i coordinated one network.could you please check it
@surendranram4364
4 жыл бұрын
at 9.25 seconds setting for 51LV you calculated sec. current without pf. why? then why restricted and differential relay is not part of coordination?
@electricaltechnologyandind5335
4 жыл бұрын
Transformer is rated in kva. So how power factor will come in picture??? Restricted earth fault relay is instantaneous relay, special type of protection...
@jkj1459
4 жыл бұрын
THANKS YOU SO MUCH SIR , HOW WE DEDUCE PSM FORMULA
@electricaltechnologyandind5335
4 жыл бұрын
Those are ansi and iec standard. So no need to deduce
@lokchand7962
Жыл бұрын
What is psm and tsm in numerical relay . i don't find that tipe of setting in numerical relay?
@electricaltechnologyandind5335
Жыл бұрын
PSM you need to calculate if you go by the hand calculation. Yes it is not an input setting to numerical relays. TsM is the time setting or time multiplier
@lokchand7962
Жыл бұрын
@@electricaltechnologyandind5335thank you very much for your response.😍😍
@saurabhlangave3528
5 жыл бұрын
Sir can u please suggest book for relay coordination for numerical relay ,As well as what type of protection we should provide for different types of electrical equipment .
@electricaltechnologyandind5335
5 жыл бұрын
cr masson
@josefinaiipolicarpio6647
4 жыл бұрын
I see youre blogspot what you mean by B/C AND I/C and PCC, what does it stands for?
@electricaltechnologyandind5335
3 жыл бұрын
Pcc-power control centre(switchboard) I/c-incomer B/c-buscoupler
@jimuelvillaoz4238
4 жыл бұрын
Hi Sir, May I please know where exactly I can find the relay time selection as you mentioned in this video? Can you please provide me the specific link? Many thanks!
@jimuelvillaoz4238
4 жыл бұрын
I am really hoping that you will notice my post the soonest and get a feed back on this. Many thanks!
@electricaltechnologyandind5335
4 жыл бұрын
The relay timing I explained is my experience and some calculation regarding the fault withstand capability of bus bar, cables, transformer etc.
@narayanaswamygunasekaran521
4 жыл бұрын
Font size may be increased not readable or video may be done in more close up position
@anilchopra83
3 жыл бұрын
thanks but audio quality not good
@bongbengsiong5545
4 жыл бұрын
sir, I love u
@electricaltechnologyandind5335
4 жыл бұрын
Oh my god.... ne way.. thank you....
@ahmadrazarizvi7819
24 күн бұрын
Noise issue
@Invisionmedibihar
2 жыл бұрын
sir can you explane in hindi
@pcselvam
4 жыл бұрын
Pl reply sir......
@albertos8809
4 жыл бұрын
Subtitles please I can't understand because of the accent
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