Insulation Resistance Test of Transformer

Please give the reference informations in detail that where did you get it.

Informative, Thnx sir.

I love the explanation

It's OK to say that any transformer is safe to operate at 20 Celsius, but what if the manufacturing company knows that the transformer is going to be subjected to ambient temperatures much hotter than 20 Celsius? Isn't it better to apply the IR test for the maximum operating temperature. For example, if the transformer is being used in hot summer climates where the temperature regularly reaches 35 Celsius, shouldn't we apply the test for 35 Celsius to make sure there will be no arcing at all times of the year?

Insulation Reating of Einding must be not lower Than 10Giga ohms not in mega

Can you please make videos on testing of power cables

How the input supply is injected for testing of transformer?. Input source

Thanks!

Very informative indeed 👍

nice work.

DAR b/w HV to LV, LV to G , HV to G

if DAR less the 1 it is dangerous need for maintenance if ration greater then 1 and less then 1.3 the check oil BDV mositure contents and C & DF test of winding if the ratio greater then 1.3 it is good

It is the ratio of reading taking after 15 or 30 seconds to reading taking after 60 seconds with same coonection as your video. Both readings are taken in one step. The purpose of this test is to ensure integrity of the winding insulation.

Dielectric Absorption Ratio (DAR) Test insulation test ruther then IR test

Major Farts 🤣

why did not you use guard terminal.

Tnx

What is the resistance value at a temperature of 40 degree celcius

It is really a very helpful video. It has cleared all my doubts. Thank u sir.

Thank you sir🙂 ,this is very helpful .

Thank you sir for your educational video.

Nice work - thank you for posting this video. In the calculations you compensate based on room temperature. Should you instead be compensating for transformer oil temperature.

Nice Explanation point to point...Will wait for next video.. Quality video..

What voltage are you setting the megger to for each test H-XG X-HG and HX-G ?

Nice work. What books do you suggest about this topic?