@@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
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.
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.
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 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.
Very useful sir... thanks
well explained practicaly sir .thank you..
After test discharge everything
Very use full
Useful this video
Super 👌👌
Why Apply voltage Value 5kv
Stability test podunga bro
Rare video in Tamil on IR testing of DT transformers. Good point = No need of jumpering terminals.
Sir leada secondary side la neutral en kodukurainka phase layea kodukalamaa
Star connectionla neutral common point.
Phase to phasem kudukkalm.
@@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
Less than 1 Ohm
How to check transformer winding resistance test.....
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.
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.
Thanks sir.can you upload one video about how to check transformer winding resistance test
Ok
Nice👏
Thanks
Ithu ena test.ratio testah
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.
Agreed for safety purpose
@@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.
Nice
Thanks
Hi maachi cpt student da
11kv why 5kv used Miter
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
Kanyakumari slang 🥰🥰🥰