Tap-changers and switches - Hitachi ABB Power Grids
2021-9-22u2002·u2002Tap-changers and switches. Tap-changers are used to change the turn ratio between windings in a transformer. This ratio determines the voltage ratio between the windings and is essential for the stabilization of network voltage under variable load conditions. This adjustment may be made by an on-load tap-changer, or by a de-energized tap ...
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