Abstract
Object and purpose of research. This paper discusses neutral grounding switchboard of electric power system aboard Arktika icebreaker and estimates fault current for given neutral resistance. Materials and methods. The paper relies on the technical specifications of neutral grounding switchboard and follows common methods of electric engineering. Main results. Fault current estimates for neutral grounding switchboard of TPS-36-2M2 synchronous turbogenset. Design of the switchboard. Conclusion. Electric power system aboard Arktika icebreaker has neutral resistance rating of 600 Ohm, which corresponds to High-Resistance Grounding class. Neutral grounding switchboard discussed in this paper has been in operation since 2020.
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