Answer / s.sheikhussain

TYPES OF TESTING IN TRANSFORMER FOLLOWING TEST
1) IR
2) PI VALUE
3) Magnetic CORE balance
4) MAGNTISING CURRENT
5) Ratio test
6) Vector group
7) SHORT CIRCIT TEST
8) BDV
9) WINDING RESISTANCE
10)TAN DELTA
11)MARSHALLING BOX SCHEME CHECKING
12) Visual inspection
13) Tap changer tests
14) Special tests to see the condition of the dielectric
strength

Answer / 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)

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