Excellent explanation... But I have some doubts... Please clarify 1.You have presented three videos about directional relay. Where to use self polarised, cross polarised and residual voltage method. All are showing different tripping region. 2. In self polarised method you have rotated clockwise to draw MTL. In cross polarisation method you have rotated the phasor clockwise to draw MTL. In residual method again you have rotated the phasor clockwise to draw MTL. 3. In relays only RCA and PU values settings implemented. So how to find out tripping regions for relay testing. Please explain.. Thank you
@baranitech10263 жыл бұрын
1. for earthfault the direction earthfault is different then overcurrent. 2.same in earthfault the residual voltage direction change so it different form overcurrent 3.in numerical relay has both self and cross polarised method some relay we have to choose. if not they will have only one polarised method. this can be seen in manual of the relay.
@baranitech10263 жыл бұрын
for direction earthfaul i will check once again
@karamhusenkhan22013 жыл бұрын
Very nice explanation.. Thanks you so much for such a nice tutorial which I was looking for....
@baranitech10263 жыл бұрын
You are most welcome
@HaNPT-HTD2 жыл бұрын
at 4:30s in your video, as previous calculation V0 is 60 degrees and I0 is 180 degrees for fault of L2-ground but your diagram is they are 60 degrees same? Can you explain for me, thanks.
@rekhasatheeshkumar67673 жыл бұрын
Sir,Thanks a lot for clear explanation one doubt I have as per explanation R-phase to E/F in forward case V reference you took opposite to Vr same way reverse explanation 180 opposite you took that is in phase with Vr up to that it was clear . But in Y to E/F and B to E/F direction is mentioned in the drawing reverse but the fault is not in phase direction with corresponding phases so that as per my understanding it’s forward direction diagram if I wrong please explain sir.
@baranitech10263 жыл бұрын
yes your correct. i have made for forward only for Y and B .
@zeeshankhaliq2593 Жыл бұрын
Nice & clear explanation, however, I have doubts in the Io calculations as below: when I1 = 2.8 L 0 degree I2 = 1 L 240 degree I3 = 1 L120 degree Io should be = 0.60 L 0 degree whereas you calculated 0.6 L180 degree also there is difference when I calculate Io for faults on I2 and I3 Please explain your calculation? Thanks
@baranitech1026 Жыл бұрын
I WILL MAKE CLEAR VIDEO AGAIN
@karsjoan2 жыл бұрын
For Earth fault always RCA should be in Negative. But you mentioned +40. What is the reason?
@baranitech10262 жыл бұрын
its depends on power in and out .
@Mumbaindianzzzzz3 жыл бұрын
For r phase you considered vref at 0 & 180 degree..... For y and b phase what are the angle for v ref to be considered
@baranitech10263 жыл бұрын
for y is 110 to 290 and for b its 170 to 350 . this i have show at the end of the video
@Mumbaindianzzzzz3 жыл бұрын
@@baranitech1026 how?
@baranitech10263 жыл бұрын
@@Mumbaindianzzzzz Please see at the end of the video i have shown
@SantoshKumar-nk5ve3 жыл бұрын
Sir, if RCA angle is -45 degree then MTA should be anticlock wise direction from Vref or same clockwise??
@baranitech10263 жыл бұрын
yes it should be in anticlock wise direction
@flyhighwithyourdreams.2132 Жыл бұрын
@@baranitech1026 @SantoshKumar-nk5ve sir this angle (RCA) depends upon Network earthing like compensated, isolated & Solidly earthing. Here Isolated depends upon capacitance charging current when fault accrued (that is taken RCA - 90 deg lag). Compensated depends upon Capacitance & Inductance (that is RCA - 0 deg). Solidly earthing inbetween 0-90 deg). I hope this is correct & if wrong kindly clear me.
@kaisalvi78502 жыл бұрын
Please share Hindi language too but your explanation very good best wishes
@baranitech10262 жыл бұрын
i will try in future
@companyalleyan649 Жыл бұрын
thank you very for these details
@baranitech1026 Жыл бұрын
welcome lot
@sagormohammad3492 жыл бұрын
RCA = 40 degree. Why we not draw in anti clock wise direction As a reference of Vref
@baranitech10262 жыл бұрын
it will change region
@By-ss4ss2 жыл бұрын
thank you very much
@baranitech10262 жыл бұрын
You are welcome
@madhuvimal882 жыл бұрын
Brother... RCA angle settings how to deside.. Wether its 45 60 40...dgree, its related with earthing system... Ungrounded grounded or resistance earthing how we choose exactly... Particular angle.. Kindly make clarify... Rest of this doubts... I got some idea's from... Above videos thanks
@baranitech10262 жыл бұрын
i don't know how to set RCA angle its design related. if i came to know i will share bro.
@madhuvimal882 жыл бұрын
@@baranitech1026 sure.. Thanks... Barani brother... Your doing such amazing work... I learnt lot of concept from you.. Thanks.
@ISLAMASIF562 жыл бұрын
Sir please explain the relay neutral coil polarity change effect on the zone. Even phase coil polarity change effect details.
@baranitech10262 жыл бұрын
i will try to make
@abudhakir94033 жыл бұрын
Thank you
@baranitech10263 жыл бұрын
You're welcome
@saju1218 ай бұрын
Can you make one video for cos theetta polarisation method
@baranitech10266 ай бұрын
i will try thank you
@gunpowder98 Жыл бұрын
How did you get the RCA angle?
@baranitech1026 Жыл бұрын
for calculation i have take random value
@HR-rp8pc3 жыл бұрын
Thanks sir
@baranitech10263 жыл бұрын
Welcome
@venkateshkumar48272 жыл бұрын
Io, Vo calculation for all cases, not getting correct
@baranitech10262 жыл бұрын
i will check
@velusamypothiraj2300 Жыл бұрын
Case 2 calculation explain with calculator, and earth fault for rphase operating region is confusion
@baranitech1026 Жыл бұрын
earth fault i will try to make one more video
@madhivanan81153 жыл бұрын
Bro generator protection relay full testing video poduga
@baranitech10263 жыл бұрын
Will do soon bro
3 жыл бұрын
mta 40 or -40 ?
@baranitech10263 жыл бұрын
40
@刘建伟-u3v2 жыл бұрын
During test the DEFLLPDEF 67n on the ABB REF615 relay, I make the same setting as u motioned on the video ,but it is not tripping in the operation region .I am confused ,can You show the full settings for the earth fault, thank you
@刘建伟-u3v2 жыл бұрын
Mentioned
@baranitech10262 жыл бұрын
i will make for ABB relay testing for directional earthfault