Transformer Differential Relay testing | and | how to create slope on Omicron kit | RET ABB RELAY

Transformer Differential Relay testing and how to create slope on Omicron kit for RET 620 relay.
and also show how to create slope on omicron kit.
Transformer details are
SN [KVA] = 25000
V1N [KV] = 33KV
V2N[KV] = 6.9KV
Zk[%] = 10.00
Vector Group = Dyn11
CT-HV = 600/1A
CT-LV=2500/1A

Relay setting are
ID low set = 30%
ID high set = 1200%
Slope 1 = 30%
End section 2 = 150 %
Slope 2 = 100%

Note for RET Abb relay end section 1 is 50%.

in this video you can able to see following test
Pickup test
Stability test
Instability test
Slope test.

[owinookello]

One of my best teachers, sir kindly those videos in hindi please translate in english and also put all your videos in one playlist for easy assess

[colinteoh]

Dear sir, thank you for sharing your knowledge, I think the world would be a better place with people like you.

[mohgahfer]

Excellent, I searched for those videos alot but not found by this details way, Thanks alot

[jejkosuru]

Best video on Trafo differential bias scheme . nice explanation . i hope you will post similar type of videos in future also.

[bharatlalmali]

I have become fan of your knowledge and fundamentals. Great job sir....you are a guide of millions of protection engineers...thanks..May you prepare a video on 2nd harmonics testing of restricted earth fault protection and it's requirements...

[RahulKumar-swhk]

Please Sir explain Generator Protection like Differential, Reverse Power, Stator Fault, Overexcitation etc.

[suremanverma]

Great video upon RET670 testing through Omicron test kit (Diff Characteristic). Here some parameters missing to set in relay test kit viz. Idiff >>, Idiff>. If pick up value less than .3, then you have to set accordingly. Also after drawing curve in characteristics, it is not reflecting same as in test module. Here some video skipped. However it has given good reference for testing. If this clarity is given in upcoming videos, it will really help working engineer like me.
Thanks for reading my feedback.

[napolionituinabua]

Great Video bro.... shows your in-depth knowledge on the subject... hope for more great videos...

[suremanverma]

Thanks for step by step guide to RET 670 Diff testing through Omicron Test kit specially shot test and search test. Kindly review Bias formulae of ABB RET 670. As per manual, it is mentioned maximum of individual current referred to Primary. please share other make relays Bias formula for preparing exact slope characteristic.

[muthamilselvan]

Thank you for your valuable upload .it's very useful for me.kindly upload harmonics test and REF test .as well as RED670 all test

Very useful video, Thanks from your efforts

[mkhoirun]

Do you have any video for step by step Low Impedance REF Transformer Protection Setting Calculation include?

[kelvincollins]

Great Video Sir!!! How can one test line differential relay using the differential operating characteristic module. I have checked and have seen on the protected object that the protected equipment options are only transformer, Generator, Motor and Busbar.

[shehab]

really awesome content bro.. can't thank you enough!

[sureshpadhy]

How to test differential protection of a three winding transformer.... Please explain

[vinayks]

Here RET615 is taken as relay. For 670 series, correction factor is not required and all values we can change.

[aftabraj]

Great lecture... sir please make video on LINE DISTANCE PROTECTION with zone calculation.

[rdtesla]

Awesome explanation...if possible request you to pl. Add link in description every other video you'd mentioned in narration next time.

[king-pirates_coc]

good video. can you teach us about abb pcm / siemens digsi software configuration along with required driver ?

[pradipgajbhiye]

Sir, sir we replaced the 2 phase old CT of 20MVA PTR with new ones and during the stability test we observe double(0.4+0.4=0.8)current in 1phase, , and all the CT secondary polarity is ok, and then we review the relay setting vector group is Dyn5 instead of Dyn11 please explain how vector group of PTR will be affected CT secondary current