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As an untrue or composed
3 phase transformer
are called such Transformers, who content of 3 separate, single Phase Transformers, and where her Output is connected to a 3 Phase voltage grid.
Such untrue 3 Phase Transformers, can be softstarted with a TSRD or 3 single TSRL, when they are in a no load state. When this transformers are connected with a load, they can only softstarted with 3 single TSRL, for single phase transformers.
