Test fixture having switching means for facilitating transformer turns ratio testing

In a system comprising a transformer turns ratio test unit and a transformer having both primary and secondary windings to be ratio tested which system utilizes said transformer turns ratio test unit to perform turns ratio tests on said transformer to be tested, a test fixture comprising:

• input coupling means for connection to a transformer to be tested, output coupling means for connection to a turns ratio test unit,
• switching means connected between said input and output coupling means, said input means comprising seven test leads comprising three wire primary transformer connection leads, and four double wire secondary transformer connection leads, each of said four double wire secondary transformer connection leads having a current wire and a potential wire,
• said output coupling means comprising a pair of secondary output terminals for connection to the secondary test leads of said turns ratio test unit, said output coupling means further comprising a pair of primary output terminals for connection to the primary test leads of said turns ratio test unit.
• said switching means further comprising three primary switching element means and three secondary switching element means,
• said primary switching elment means effecting the selective electrical coupling of any two of three primary transformer connection leads to said primary output terminals.
• said secondary switching element means effecting the selective electrical coupling of a common one of four of said secondary transformer connection leads and one of the other three secondary transformer connection leads to said pair of secondary output terminals.