Calculation of line-to-line ratios and phase angles of a combination of three single-phase voltage transformers star-connected on a three-phase system, the star point being earthed

The paper describes the development of algebraic expressions for the calculation of the line-to-line ratio and phase angle errors from the measured line-to-neutral values of a combination of three signle-phase voltage transformers, starconnected to a 3-phase system with the neutral point earthed.