duclampv said:
could you explain to me the conditons of 2 transformers operate parallel?
Parallel Operation of Transformers
The essential conditions for successful parallel operation of transformers are:
I. Transformation or turn-ratios and voltage ratings should be the same.
II. Polarities of the transformers should be the same.
III. Percent impedances of the transformers should be the same.
IV. Ratios of resistance to reactance should be the same.
V. Phase displacement between primary and secondary windings of the transformers should be the same.
VI. Phase sequences or vector group of the transformers should be the same.