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Switching Arc Energy Limitation Approach for LV Circuit Breakers

Author

Listed:
  • Dariusz Smugala

    (Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, Cracow University of Technology, Warszawska 24 Str., 31-155 Cracow, Poland)

  • Michal Bonk

    (Department of Electrical and Power Engineering, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, AGH University of Science and Technology, Mickiewicza 30 Str., 30-059 Cracow, Poland)

Abstract

This paper presents an experimentally verified approach to deriving switching arc energy limitations for low-voltage (LV) circuit breakers (CBs). Air-insulated contactors equipped with additional vacuum-insulated (VI) arcing contacts were tested for AC and DC current interruption efficiency, respectively. In the study, the contact arrangements of reed relay VI contact switches of low current breaking capacity combined with air-insulated contactors were examined. Tests were performed on selected LV CBs inductively loaded for LV power network rated voltages. A comparative analysis of the arc energy resulting from various arc time durations recorded during the switching-off operation was performed. Using a variety of either basic CB air-insulated contact systems or combined contact systems, a practical assessment of the proposed idea for enhancing the arc quenching efficiency was undertaken. As a result of the implementation of the proposed idea, the arc burning duration time was indicated as being hundreds of times shorter. In most cases, a complete arc reduction was achieved. Moreover, the resulting arc energy dissipation during the breaking operation was substantially minimized. Consequently, a significant increase in the total current breaking capacity of the tested CBs was achieved.

Suggested Citation

  • Dariusz Smugala & Michal Bonk, 2021. "Switching Arc Energy Limitation Approach for LV Circuit Breakers," Energies, MDPI, vol. 14(20), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:20:p:6774-:d:658411
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    References listed on IDEAS

    as
    1. Fazel Mohammadi & Gholam-Abbas Nazri & Mehrdad Saif, 2019. "A New Topology of a Fast Proactive Hybrid DC Circuit Breaker for MT-HVDC Grids," Sustainability, MDPI, vol. 11(16), pages 1-15, August.
    2. Dariusz Smugala & Michal Bonk, 2020. "Study of Arc Parameters of AC Relays Operating under Distorted Supply Voltage Conditions," Energies, MDPI, vol. 13(18), pages 1-13, September.
    Full references (including those not matched with items on IDEAS)

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    Cited by:

    1. Bartosz Rozegnał & Paweł Albrechtowicz & Piotr Cisek, 2021. "A Novel Low Voltage Selective Circuit Breaker with Additional Current Path," Energies, MDPI, vol. 14(23), pages 1-14, December.

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