The present invention provides a
high voltage isolation transformer, comprising one or more sub-transformers; when the sub-
transformer is provided with one, the
high voltage isolation transformer is equivalent to the sub-
transformer; when multiple sub-transformers are provided, the plurality of sub-transformers are connected in a
cascade form, and each sub-
transformer is connected in parallel withan equalizing device. The
high voltage isolation transformer provided by the invention avoids the situation that
partial discharge is difficult to control, the
voltage level can be extended to hundreds of kilovolts and above, heat dissipation of windings is facilitated, effective insulation isolation of the compact space can be realized, and the difficulty of transformer insulation design and manufacturing process difficulty and volume can be effectively reduced. The high
voltage isolation transformer in the invention has high insulation tolerance strength and low
field strength distribution,simultaneously, effective suppression of the
partial discharge can be realized, low
partial discharge design of the transformer is realized, and the magnitude of partial
discharge in the
voltage level above hundred kilovolts does not exceed 50pC. The high voltage isolation transformer has the advantages of small structural size, high
mechanical strength and flexible installation.