Method for detecting single-phase direct-current resistance of in-phase inverse parallel winding of secondary side of rectifier transformer

The invention discloses a method for detecting the single-phase direct-current resistance of an in-phase inverse parallel winding of a secondary side of a rectifier transformer, and aims to provide amethod with efficient measurement for detecting the single-phase direct-current resistance of the in-phase inverse parallel winding of the secondary side of the rectifier transformer. The method is carried out by adopting a single-phase direct-current resistance tester. According to the method, two tested windings on the secondary side of the rectifier transformer are short-circuited through short-circuited wires such that the windings of two direct-current resistors needing to be measured on the secondary side of the rectifier transformer are connected in series, the direct-current resistancetester is not stopped during measurement, and the direct-current resistances of the two groups of windings are respectively measured through the switching of two control switches. The method is suitable for the in-phase and i