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How to size the Generator or Transformer required for supplying single unit of Drive

The size of the Generator/Transformer should be 1.5 to 2 times the power in VA to that of the drive that is to be supplied.
Example: The Power rating in KVA of a 250KW Drive is 292.2KVA (Reference - Catalogue of Altivar 71). The Generator/Transformer power size in this case will be 292.2 KVA x 2 = 584.4 KVA.
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