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12kV high impedance fault testing

This research paper presents a field experimental test results during high impedance fault conditions at a Southern California Edison (SCE) 12kV distribution circuit. First, it will present the test setup including the distribution circuit configuration as well of the equipment used for the testing. Next, it will provide the actual high impedance fault (HiZF) performance waveforms with and without load connected into the secondary of the distribution transformer. These waveforms were captured with a high accuracy power analyzer. Finally, it will provide conclusions and recommendations on the needs of detecting these types of faults. The data presented can be used to validate high impedance computer models used to study this phenomenon.