how many testing use in power transformer?tell equipment
names?
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Answer Posted / pradeep
There are so many testing are available to test a power transformer.
1. Turns ration testing : to ensure the no.of turns on each winding.
2. Winding resistance testing: To measure the resistance of each winding.
3. Vector group testing : To identify transformer vector group, which is very important for parallel operation.
4. Insulation resistance testing : To ensure the healthiness of transformer insulation resistance.
5. Impedance voltage testing : Important for parallel operation and loading condition assessment.
6. No load/ Short circuit testing : For the measurement of losses.
7. Partial discharge testing : To monitor the insulation imperfection/aging effect
8. Switching impulse/ lightning impulse testing : To measure the impulse withstand strength of the transformers.
9. Acoustic level measurement: To track the level of magnetic hum of the transformer.
10. Dissolved gas analysis: To identify dissolved gaseous in the transformer gases.
11. Dielectric testing : To measure break down potential of transformer oil.
And the count goes on...!!!
The type of testings carried out will vary based on the application and criticality
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