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measurement of transformer zero sequence impedance

measurement of transformer zero sequence impedance

measurement of transformer zero sequence impedance

(OP)
how to measure (test) the zero sequence impedance of two winding, three phase Dyn11 33/11 kV 15 MVA transformer?

RE: measurement of transformer zero sequence impedance

(OP)
For a Dyn transformer, is the following correct:

- 3 phase at delta side to be shorted together.
- 3 phase at y side to be shorted together.
- apply the voltage between one of the phases at y side and nutral.
- Z0 will be equall to V/I

RE: measurement of transformer zero sequence impedance

Apply the voltage that produces full rated current.  The per cent of rated voltage is the per cent impedance.

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