Selection justification for neutral grounding switchboard of electric power system aboard “Arktika” icebreaker

Abstract

Object and purpose of research. This paper discusses the capacity of power cables aboard “Arktika” icebreaker to confirm selected resistor rating of neutral grounding switchboard through on-site measurements. Subject matter and methods. Calculations are based on approximate and rigorous expressions. Main results. Numerical results obtained in this study confirmed the correctness of investigated approaches and calculations. Conclusion. Resistor rating for neutral grounding switchboard of “Arktika” icebreaker was selected correctly, which is confirmed by measurement results.

Keywords

• neutral resistor rating
• electric equipment and cabling capacity
• neutral grounding switchboard
• ground fault current