POWER THREE-PHASE ADJUSTABLE TRANSFORMER FOR CONNECTION TO NETWORKS OF VARIOUS LEVELS OF MEDIUM VOLTAGE Russian patent published in 2022 - IPC H01F29/02 H01F27/28 H01F30/12 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be executed in an implementation of any power. Power three-phase adjustable transformer for connection to networks of various levels of medium voltage is intended to supply consumers with electric power of industrial frequency with a line voltage level of 0.4 kV. The transformer has three windings, wherein two are primary voltage windings and one is a secondary voltage winding. One of the primary voltage windings has intermediate taps. In order to change the working primary voltage, a change in the connection circuit of the primary windings of the transformer is applied, and in order to adjust the secondary voltage, the taps of one of the primary windings of the transformer are switched.

EFFECT: increase in the reliability due to the power supply provided to consumers when working on any of the most common levels of medium voltage for insulated-neutral networks used in the Unified Power System of Russia: 35, 20, 10, 6 kV.

1 cl, 6 dwg