Answer / mahesh bial airport

Transformer testing is mainly two type because calculating
the losses of transformer 1) open circuit test 2) short
circuit test. In opencircuit test showing hystorisys
loss ,eddy current loss ( magnetic loss ). In short circuit
test showing copper loss of the transformer

Answer / bimal

Transformer testing is mainly done to know the correctness
of wdg,core, etc.....
The Lv tests are.
Vector Group,Magnetic Balance,Magnetizing Current,Ratio,

Hv test are.
Impulse test,switching,etc.

Answer / venkat

Transformer test are,
Insulation Resistance Test,Voltage Ratio Test,Magnetic
balance test,Vector group Test,Magnetising Current
test,Short Circuit Test,Oil Test

Answer / dany

Basically transformer tests are of two types.
1)short ckttest 2)open ckt test
short ckt test gives us 1)copper losses 2)voltage regulation
3)lekage impedances(ie. resistance and lekage reactance )
open ckt test gives us 1)core losses 2)parallel component
values (ie Rc and Xm)3)secondary voltsge

Open ckt test will be done on lv side ,while short ckt test
will be on high voltage side

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