Transformer electrostatic voltage distribution

ONE OF THE PROBLEMS in power-transformer design is the control of the distribution of electrostatic voltage, produced by surge voltages applied to the line terminals. For waves with a relatively steep front, this initial electrostatic distribution is, to a large extent, determined by the capacitance network formed between the winding elements, the core, and the tank structure. This digest describes the wide range of control of this distribution achieved in interleaved shell form windings by the proper application of static plates, as shown in Fig. 1.