LOW VOLTAGE NETWORKS INSULATION MONITORING WITH TWO AND THREE VOLTMETER READOUTS METHODS

Authors

  • P. Olszowiec Elporem i Elpoautomatyka Spółka z o.o., Poland

DOI:

https://doi.org/10.20998/2074-272X.2016.5.11

Keywords:

low voltage DC, AC/DC IT networks, insulation resistance, methods of two and three voltmeter readouts

Abstract

Purpose. In the paper there are described methods of two and three voltmeter readouts for insulation resistance periodic measurement in live DC and AC/DC IT networks. A new measuring method for AC/DC networks is proposed. Application of a novel algorithm for shortening of measurement cycle is explained. Methodology. All methods of two and three voltmeter readouts consist in connection of a resistor and measurement of mean value of network’s fixed point-to-ground voltages. Results. A new algorithm implemented in KDZ-3 device enables determination of steady-state voltage of a DC network’s pole much faster than in other exploited systems. Originality. In author’s modification of two voltmeter readouts method, line-to-ground voltage mean value is measured at AC side of AC/DC network. This innovation has not been applied for implementation of periodic insulation monitoring in AC/DC IT networks yet. Practical value. The use of author’s innovation will allow to execute measurements at AC side of AC/DC IT networks which might be necessary if rectifier’s output circuits are unavailable. Shortening of measurement cycle duration of two or three voltmeter readouts method’s is of great importance in networks with high capacitance.

Author Biography

P. Olszowiec, Elporem i Elpoautomatyka Spółka z o.o.

MSc., Electrical Engineer

References

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Published

2016-10-31

How to Cite

Olszowiec, P. (2016). LOW VOLTAGE NETWORKS INSULATION MONITORING WITH TWO AND THREE VOLTMETER READOUTS METHODS. Electrical Engineering & Electromechanics, (5), 64–67. https://doi.org/10.20998/2074-272X.2016.5.11

Issue

Section

Power Stations, Grids and Systems