Application of Modified Passive Insulation Monitors for Selective Earth Fault Location in Live Low Voltage AC IT Circuits


  • Piotr Olszowiec Independent researcher



AC IT networks, diode rectifier, earth fault location, insulation resistance, mean value


In the publication there are presented most popular passive methods of continuous insulation monitoring in live low voltage unearthed AC networks. There are given formulas for determination of insulation equivalent resistance for multi-phase networks sources with both symmetrical and asymmetrical voltages. Novel solution of elimination of the most popular measuring scheme’s shortcomings is proposed. New methods of  insulation resistance measurement and  earth fault location based on supervision


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