Answer Posted / rajendran

The depth of the testing procedures adopted depending upon
the application where it is installed and various service
conditons of the transformer..... however following are
basic tests which can not avoided...

1) IR
2) Ratio test
3) Vector group
4) Magnetic balance
5) Visual inspection
6) Tap changer tests
7) Special tests to see the condition of the dielectric
strength
8) DSA - dissolved gas analysis "(Predicative type)

thanks

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