Method and apparatus for measuring prospective short circuit current
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A method of determining a prospective short circuit current for an electrical system including a source includes connecting a test load between either: (i) a first phase line and a second phase line of the electrical system or (ii) the first phase line and the neutral line of the electrical system, employing a sensor coupled to the electrical system to measure a voltage drop across the test load, determining a voltage value based on at least the measured voltage drop across the test load, determining a total effective impedance for the first phase line to the source, and determining the prospective short circuit current based on the voltage value and the total effective impedance.
Luebke, C. J., & Hussain, A. (2021). Method and apparatus for measuring prospective short circuit current.�U.S. Patent No. 10,884,068. Washington, DC: U.S. Patent and Trademark Office.