Core Construction for Large Constant Voltage Transformers

Three classes of cores have been used for constant voltage transformers: separate series cores; leakage-shunt cores; and Wroblewski cores. The separate series reactor and main core is not economical nor suitable for special windings. The leakage-shunt core is suitable for high-volume production, but dissipates heat inadequately in the large sizes. The Wroblewski core provides full design freedom for large constant voltage transformers.