2013 | OriginalPaper | Buchkapitel
General Characteristics
verfasst von : Piotr Olszowiec
Erschienen in: Insulation Measurement and Supervision in Live AC and DC Unearthed Systems
Verlag: Springer Berlin Heidelberg
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In the chapter there is presented general information on AC IT low voltage systems. Graphical and analytical methods of phase-to-ground voltages determination are described. There are also discussed methods of ground fault and leakage currents calculation in both single-phase and three-phase networks. Formulas for these currents determination in steady-state and transient condition are derived. Calculation of ground fault and leakage currents with use of symmetrical components in three-phase systems is explained. Application of Thevenin’s theorem for these currents determination is underlined.