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Hi-L Technique For DC Surge Testing

From Baker Instrument Company, an SKF Group Company
 

 
This I-Presentation is a short introduction to a new technique that will offer users of high voltage test equipment that have motors with high impedance to view better qualified information about DC machines. This technique is designed to look at certain types of DC windings operated with direct current. DC Current does not induce a "circulating current" as great as AC - in the case of a turn-to-turn short. In fact "pure DC" by its very definition will not result in circulating current. Therefore, trending of DC windings by periodic turn-to-turn testing is possible. This technique expands the capability of the standard Baker tester and offers the end user dramatically more sensitive results then previously rendered. So what is Hi-L? It simply means High Inductance. This technique can be highly useful for many common types of industrial windings such as DC Motor Fields Exciter Stators Generator Rotors Solenoids, Brake Coils Some types of Fans Among others.
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