ABB Transformers
1: In the series winding (HV winding) for HV regulation. 2: In the LV line terminal for LV regulation. 3: In the neutral of the common winding (LV winding) ---for either HV or LV regulation. Tertiary voltage: The transformer can be equipped with a tertiary winding that can be loaded or just acting as a stabilizing winding. Technical features
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