| 摘要 |
<p>In order to allow adjustments in the voltage on the basis of the charge fluctuations, an MV/LV transformer (10) is combined with a second booster transformer (20), comprising a plurality of sockets (22, 24, 26) on the primary winding of same, the connection of said sockets with the LV network being controlled by low voltage contactor switching means (32, 34, 36). The modification in the voltage thus produced by the second transformer (20) modifies the transformation ratio of the assembly (10, 20) and allows voltage variations. The invention is particularly suitable for three-phase oil immersed transformers.</p> |
