A DGA (Disolved gas analysis) is needed to identify certain types of damage a transformer may experience.
After a severe fault, a DGA test is often performed to determine whether there might be damage to the transformer, or if it is safe to re-energize.
Oil should be having a minimum insulation value. Oil must be tested at regular interval to ensure the same.
It helps cool the coils that get hot during operations.
we need vacuum to remove moisture from tank
If you have a large power transformer that is leaking oil, do NOT touch it! Older transformer oil contains PCB's which are extremely toxic!! Get a licensed firm to test the oil for PCB's and repair or replace the transformer. Don't fool around with this! PCB's are a serious danger to you and others. Do not let this go. Get it fixed right away!
to cool a winding of transformer and it is a insulating material and transformer oil is a purifing oil
No not really only some do :DAnswerFor transformers used in transmission and distribution systems, yes. Transformer oil is necessary for cooling and insulation purposes, enabling the 'footprint' of an oil-filled transformer to be smaller, and its rating to be higher, compared with those not filled with oil.
Nytro libra is an uninhibited transformer oil
why need dielectric test for transformer
we need vacuum to remove moisture from tank
If you have a large power transformer that is leaking oil, do NOT touch it! Older transformer oil contains PCB's which are extremely toxic!! Get a licensed firm to test the oil for PCB's and repair or replace the transformer. Don't fool around with this! PCB's are a serious danger to you and others. Do not let this go. Get it fixed right away!
Transformer oil is pure insulating oil.
The transformer will have to be taken out of service, and topped up. Usually, this would also be a good opportunity to test the oil for contaminants.
An Oil Dielectric Strength Tester is the standard for qualifying Transformer Oil. Thermal Stability would involve heating and then testing. I do not know of a product which controls heat and applies the HV test.
On installed transformer a test is performed to check weather it has any oil leakage or not, the test is called pressure test, more precisely pressure leakage test.
to cool a winding of transformer and it is a insulating material and transformer oil is a purifing oil
No not really only some do :DAnswerFor transformers used in transmission and distribution systems, yes. Transformer oil is necessary for cooling and insulation purposes, enabling the 'footprint' of an oil-filled transformer to be smaller, and its rating to be higher, compared with those not filled with oil.
open circuit & short circuit test, insulation resistance test, turns ratio, efficiency, if it is oil cooled then breakdown voltage of oil, voltage regulation and definitely visual inpection...
Nytro libra is an uninhibited transformer oil
Short circuit test and open circuit test are widely used to test the efficiency of the transformer.