The Institute of Metal Physics has developed a unique eddy-current method and equipment for nondestructive testing of the continuity of silver and silver-tin soldered joints in stator windings of electrical machines. The equipment provides highly reliable testing of the stators of electrical machines during their manufacture, repair, scheduled inspection, and emergencies.

The proposed testing method has been introduced at some enterprises. It considerably improves the reliability and the durability of the electrical machines produced at power engineering plants and operated at hydroelectric power stations in Russia. The equipment and the method are characterized by highly reliable and accurate testing. They are free of materials and fields harmful to people and the environment.