The Leakage Reactance of a Ring-Type Transformer

The ring-type transformer, considered impractical for power transformation because of difficulty in construction and insulation, can now be built easily. Performance characteristics of this transformer are inherently better than those of the equivalent conventional unit. A formula is derived to calculate the leakage reactance of a ring-type transformer. Calculation can best be carried out by a smallscale digital computer, such as a Royal McBee LGP-30.