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Abstract

In the chapter general description of “mixed” unearthed networks is given. Formulas for wire-to-ground voltages and ground fault currents on both sides of AC/DC system are derived. Few examples of voltage and leakage currents waveforms recorded in a “mixed” network are presented. Problems of misoperation of devices are dealt with. Several examples of such cases are analyzed and required insulation resistance levels are evaluated. Methods of insulation equivalent resistance measurement are described. Adaptation of a well-known “three voltmeters” procedure is explained.

Keywords

Fault Current Earth Fault Ground Fault Single Phase System Ground Voltage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Elpoautomatyka PolaniecStaszowPoland

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