Important tests on Transformers Tamil

IR test done
PI test explained Tamil

[@Gulsejkm]

Very useful sir... thanks

[@venkateshprabhu8699]

well explained practicaly sir .thank you..

[@sugumars8168]

Very use full

[@rameshparamasivan6997]

Super 👌👌

[@ashirah-2019]

Useful this video

[@arasurathin1469]

Stability test podunga bro

[@30mAkills]

Rare video in Tamil on IR testing of DT transformers. Good point = No need of jumpering terminals.

[@sujisulagam3092]

Nice👏

[@electricalvathiyar1753]

Thanks

[@mageshmageshmagi1550]

After test discharge everything

[@harisuthan6150]

Nice

[@electricalvathiyar1753]

Thanks

[@hkvasan7091]

Why Apply voltage Value 5kv

[@manothi9240]

Ithu ena test.ratio testah

[@hollywoodtimes4002]

Sir leada secondary side la neutral en kodukurainka phase layea kodukalamaa

[@electricalvathiyar1753]

Star connectionla neutral common point.
Phase to phasem kudukkalm.

[@hollywoodtimes4002]

@@electricalvathiyar1753 nandri sir I also have another doubt earth value withgrid yeavalavu irukkanum sir without grid yeavalavu irukkanum sir withgrid and without grid details sollunga sir

[@electricalvathiyar1753]

Less than 1 Ohm

[@palanipps]

while primary testing time secondary should be shorted & earthed & secondary IR doing time primary should be earthed..those details not informed sir..just for information.

[@electricalvathiyar1753]

Agreed for safety purpose

[@palanipps]

@@electricalvathiyar1753 earthed in other end not for Saftey else values will come in Mega ohms instead as Giga ohms..if you have doubt you can trail IR values with & without opposite end earthed.

[@chandrus3803]

How to check transformer winding resistance test.....

[@electricalvathiyar1753]

It will be measured with Transformer ohm meter.
By testing with multimeter you will get continuity (only beep) in secondary LV sides and a small ohm value on primary HV side but no beep.

[@electricalvathiyar1753]

megger.com/10-a-transformer-ohmmeter-mto210
The Transformer Ohmmeter is extremely useful when testing the windings and contact resistance of tap-changers with “make-before-break” contacts and voltage regulators. This action will check for pitted or misaligned contacts as the instrument will give an indication if either condition occurs.

[@chandrus3803]

Thanks sir.can you upload one video about how to check transformer winding resistance test

[@electricalvathiyar1753]

Ok

[@vinilm1844]

Kanyakumari slang 🥰🥰🥰

[@manojl3446]

11kv why 5kv used Miter

[@Gulsejkm]

For 11 kv transformer, cable, VCB, OCB We have to give only 5000 V DC is enough. For LT 500 V DC is enough to find the IR Value