DISTRIBUTION TRANSFORMER FOR LOCAL NETWORK VOLTAGE CONTROL Russian patent published in 2017 - IPC H01H9/00 

FIELD: electricity.

SUBSTANCE: invention relates to a distribution transformer with a step regulating unit for uninterrupted switching between different winding taps of the distribution transformer. The contact block of the selector and switching devices for uninterrupted switching under load are triggered by a common motor drive without an intermediate energy storage. The unit comprises vacuum switching lamps acting as switching or actuating elements for switching between different winding taps on the adjustable side of the distribution transformer.

EFFECT: ensuring uninterruptible power supply.

18 cl, 13 dwg