The vector group test is importent test in the transformer testing
The Test procedure
1. Connect the HV side "R" phase with LV side " R" phase. ( No need for Auto transformer )
2. Apply the 3 Phase voltage (380v) on HV side.
3. Measure the voltages in various combination on both side of the transformer ( HV- LV ).
4. For each vector group need diffrent type of voltage combination to conform the vector group ( refer drawings ).
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